What is the important testing industry for the PMI ?

• 2021-12-17
 
• Posted by Wilson

31JUL

In last article,we learned about what is PMI（Positive Material Identification）mean.What is the application industry for the PMI and why?

Actually we could find many industries in which the PMI is used. They include:

• Oil & Gas
• Petrochemical,
• Refinery
• Chemical/Pharmaceutical
• Aeronautical
• Power Plant
• Steel and etc.

Why the PMI is applied in those industry is that the quality of the material is directly related to the safety in the manufacturing or using process of the related goods.Actually the accidents happened before in the related industries because of the material wrongly used.So the need of inspecting specific materials is highlighted.The PMI could easily ensure the materials same as demand and no deviation.

Cangzhou wilson pipeline  sales@wilsonpipeline.com  is very careful in the control of goods’ quality,we would test the special materials before goods shipped out.If you require any piping products of special materials,don’t hesitate to contact us.Email:sales@wilsonpipeline.com

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Understanding steel grades for piping procurement

• 2021-12-17
 
• Posted by Wilson

10DEC

As industrial processes and applications have matured, industry organizations have developed unique classifications and specifications for the pipe destined for service in those sectors.

There’s lots of overlap among the organizations’ published specs, and likely lots of confusion as well.

Buyers can improve their purchasing experience by learning more about how grades of steel are designated for piping and by understanding all the information that should be included on a purchase order.

ASTM and ASME

Both the American Society of Testing and Methods (ASTM) and the American Society of Mechanical Engineers (ASME) publish piping specs. ASTM and ASME pipe designations for grades of steel are very similar.

For example, A106 B is a spec published by ASTM (the ASME spec would be SA106 B). The “A” designates a ferrous material. ‘106’ is an arbitrary number that designates it as a seamless carbon steel pipe suited for high-temperature service. Then, grades (such as A, B or C) are assigned that indicate certain characteristics of the steel based on differences in its chemical makeup and mechanical properties.

Pipe sizes are described by using a pipe chart (ANSI/ASME B36.10 and API5L) that includes the outside diameter and wall thickness. The outside diameter can be referred by the nominal pipe size (NPS) or the actual dimension in inches and the wall by stating the schedule or the actual thickness in inches.

Note that while ASTM and ASME specs are largely identical, an important difference is that pipe meant for use in pressure systems sometimes requires different or additional quality tests before it complies with the ASME standard.

American Piping Products stocks a full range of A/SA106 and A/SA 53 carbon steel pipe.

AISI and SAE

The American Iron and Steel Institute (AISI) and the Society of Automotive Engineers (SAE) share a numbering system to classify steels. AISI/SAE designations only describe the chemical makeup of a steel. They do not include manufacturing, heat treating or testing information.

Using 1020 steel as an example, the first digit expresses the steel as a plain carbon steel. The second digit indicates there are no added alloys. The last two digits indicate the steel has around 0.20 percent carbon content.

For another example, a popular steel in the piping industry is 4130. The ’41’ indicates the steel contains chromium and molybdenum alloys. The ’30’ indicates the steel has around 0.30 percent carbon content.

Again, AISI/SAE designations only classify steels. For example, a buyer who says, “I need 100 feet of 4130” has not provided enough information. The buyer also needs to note specific production and testing information found in an ASTM or ASME spec to get exactly the pipe they need.

API

Pipe for use in the oil & gas industry are classified by the American Petroleum Institute’s (API) system.

API 5L is the most common standard to which line pipe in the oil and natural gas industry is rated. Because that’s merely a standard, additional information is needed to ensure purchase orders are executed accurately.

API 5L pipe is broken down into PSL1 and PSL2 delivery conditions; those conditions are further broken down into pipe grades, i.e. Grade B, X42, X52, X65, etc. Buyers should include the combination of the overarching standard, the delivery condition and the grade for the API5L pipe they need.

Study grades of steel

Buyers who place incomplete or inaccurate orders put their operations at risk of delays or cost overruns. When in doubt, consult with an engineer and refer to the industry standards that govern your application. Also be aware of other factors that play into your purchase:

• What manufacturer restrictions are in place that may impact your order?
• Are there any origin restrictions that you need to follow when buying?
• What pipe lengths and end finishes do you need?
• Are there specific chemistry requirements needed for the application?
• Are there age restrictions that may impact your order for export?

Suppliers need detailed purchase orders to ensure you get the right pipe the first time.

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the Welded vs. seamless steel pipe

 

Welded vs. seamless steel pipe

• 2021-12-17
 
• Posted by Wilson

10DEC

As industrial applications have evolved and grown more complex, the piping products and systems that serve them have had to keep pace.

While many pipe manufacturing methods exist, the most prominent discussion in the industry compares electric resistance welded (ERW) vs. seamless (SMLS) steel pipe.

Both ERW and seamless steel pipe manufacturing methods have been in use for decades; over time, the methods used to produce each have advanced. So which is better?

Manufacturing welded pipe

Welded pipe starts out as a long, coiled ribbon of steel called a skelp. The skelp is cut to the desired length, resulting in a flat rectangular sheet. The width of that sheet’s shorter ends will become the pipe’s outside circumference, a value that can be used to calculate its eventual outside diameter.

The rectangular sheets are fed through a rolling machine that curls the longer sides up toward one another, forming a cylinder. In the ERW process, high-frequency electrical current is passed between the edges, causing them to melt and fuse together.

An advantage of ERW pipe is that no fusion metals are used and the weld seam cannot be seen or felt. That’s opposed to double submerged arc welding (DSAW), which leaves behind an obvious weld bead that must then be eliminated depending on the application.

Welded pipe manufacturing techniques have improved over the years. Perhaps the most important advancement has been the switch to high-frequency electric currents for welding. Prior to the 1970s, low-frequency current was used. Weld seams produced from low-frequency ERW were more prone to corrosion and seam failure.

Most welded pipe types require heat treatment after manufacture.

Manufacturing seamless pipe

Seamless piping begins as a solid cylindrical hunk of steel called a billet. While still hot, billets are pierced through the center with a mandrel. The next step is rolling and stretching the hollow billet. The billet is precisely rolled and stretched until it meets the length, diameter and wall thickness as specified by the customer order.

Some seamless pipe types harden as they’re manufactured, so heat treatment after manufacturing is not required. Others do require heat treatment. Consult the specification of the seamless pipe type you’re considering to learn whether it will require heat treatment.

Historical perspectives and use cases for welded vs. seamless steel pipe

ERW and seamless steel piping exist as alternatives today largely due to historical perceptions.

Generally, welded pipe was considered inherently weaker because it included a weld seam. Seamless pipe lacked this perceived structural flaw and was considered safer. While it’s true that welded pipe does include a seam that makes it theoretically weaker, manufacturing techniques and quality assurance regimens each have improved to the extent that welded pipe will perform as desired when its tolerances aren’t exceeded. While the apparent advantage is clear, a critique of seamless piping is that the rolling and stretching process produces an inconsistent wall thickness compared to the more precise thickness of steel sheets destined for welding.

The industry standards that govern the manufacture and specification of ERW and seamless steel pipe still reflect those perceptions. For example, seamless piping is required for many high-pressure, high-temperature applications in the oil & gas, power generation and pharmaceutical industries. Welded piping (which is generally cheaper to produce and is more widely available) is specified across all industries as long as the temperature, pressure and other service variables do not exceed parameters noted in the applicable standard.

In structural applications, there’s no difference in performance between ERW and seamless steel pipe. While the two can be specified interchangeably, it wouldn’t make sense to specify for seamless when cheaper welded pipe works equally well.

Good purchasing practice for welded and seamless steel pipe

An important note to make as piping products are specified for a project is that the specification books (such as those provided by ASTM, ASME, ANSI and API, among others) that engineers use to guide the specs they write only list pipe grades without referencing whether they’re produced via ERW or seamless pipe manufacturing. Not all grades can be produced by both means.

For example, a potential mix-up can occur if an engineer specifies welded pipe with a large outside diameter and wall thickness without knowing it would be impossible to manufacture it. This error would likely go unnoticed until a purchase order is placed, at which time a pipe supplier would notify the customer that the order couldn’t be fulfilled as written.

Also, a good grasp of industry standards could lead to cost savings. The A106 and A53 carbon steel pipe standards are a good example. In this article, we discuss how pipe complying with the former must be seamless while pipe complying with the latter can either be seamless or welded. For example, if an engineer must follow the A53 standard on a given project, he or she may still have the flexibility to choose which type to specify based on the specifics of the application.

Show us your specs, request a quote and get your pipe fast

Wilson pipeline Products stays fully-stocked with the best inventory of welded and seamless steel piping products in the industry. We source our stock from mills around the world, ensuring buyers get the pipe the need faster regardless of any applicable statutory restrictions.

In our steel pipe buyer’s guide, we’ll help you navigate the piping procurement process from start to finish to ensure you get what you need as quickly as possible when it’s time to buy. If a piping purchase is in your near future, request a quote. We’ll provide one that gets you exactly the products you need—fast.

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Comparing common steel pipe: A106 vs. A53

• 2021-12-17
 
• Posted by Wilson

They’re the most commonly used carbon steel pipe types in industry today, and they’re very similar.

But while the differences between A106 and A53 are few, they matter a great deal in terms of when and where each is specified.

To ensure you purchase the correct pipe and receive it quickly, two things are a must: A basic understanding of seamless and welded seam pipe, and providing detailed specs.

A106 vs. A53 — Welded vs. seamless steel pipe

CANGZHOU WILSON PIPELINE manufacture of  flange fittings&pipes

If you read the ASTM and ASME standards for A106 and A53 pipe, you’d quickly observe how similar they are in terms of chemical makeup and manufacture. The most important difference is that pipe meeting the A106 standard must be seamless while pipe meeting A53 can either be seamless or welded.

Welded seam pipe is made by curling a steel plate into a cylinder and then joining the edges via a weld. Seamless pipe is made by piercing cylindrical bars of steel through the middle while it’s hot, creating the same shape but without a seam.

The reason for the difference lies in the suitable applications for each type. A53 pipe is best suited for transport of air, water, steam and oil in low- and medium pressure applications across the industrial spectrum. It’s also commonly used as structural steel.

A106 pipe is formulated specifically for high-temperature and high-pressure service, usually in power generation applications. High-pressure, high-heat service environments put added stress on pipe, so seamless pipe types are preferred in those settings since they’re at less risk of failure under stress than their welded counterparts.

Differences in chemical makeup

In addition to the way the A106 and A53 standards dictate pipe manufacture, the standards feature slight differences in chemical makeup. Refer to our A106 vs. A53 comparison chart to see them all, but the most noteworthy difference is the presence of silicon in A106 pipe and its absence in A53.

Silicon as an alloying element improves heat resistance in A106 pipe, which is rated for high-temperature service. Without it, regular exposure to high temperatures can weaken pipe over time, increasing its risk of failure.

The A106 and A53 standards also include varying amounts of sulfur and phosphorus depending on the grade. These elements are normally considered impurities in steel, so their incorporation in piping is minimal. However, the trace amounts of these elements add machinability to steel pipe.

Purchasing A106 vs. A53

When buying A106 or A53 carbon steel pipe, clarity is the most important factor. Usually whoever does the actual purchasing is not a piping expert. They’re often buyers working from a document provided by an engineer.

In cases where specs are not clear, a pipe seller can help a buyer determine what is needed by asking questions. However, this can take added time and the buyer may not know the answers. The pipe sale quickly turns into a game of phone tag.

To avoid this, buyers should make sure specs are crystal clear. Also, keeping good records will add efficiency to piping procurement. If a firm regularly purchases A106 or A53 pipe, that information should be kept handy as a reference.

At Wilson pipelline Products, our piping experts are trained to assist buyers in determining whether A106 vs. A53 is the right pipe for their application. If you already know what you need, use our product lookup to see if it’s in stock. We keep the industry’s best inventory of piping products in yards in Houston and Chicago, well-placed to quickly deliver whatever you need, wherever you are.

If you’re still researching suppliers, our steel pipe buyer’s guide contains information about piping applications, industry organizations and standards and tips to make sure your purchase is as smooth as possible.

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Standards organizations impacting steel piping: ASTM vs. ASME vs. API vs. ANSI

• 2021-12-17
 
• Posted by Wilson

Standards and industry go hand in hand. You can’t have one without the other.

Because pipe is so common among so many industries, it’s no surprise that a number of different standards organizations impact the production and testing of pipe for use across a wide array of applications.

As you’ll see, there’s both some overlap as well as some differences among the standards organizations that buyers should understand so that they can ensure accurate specs for their projets.

ASTM

ASTM International provides industrial material and service standards across a wide range of industrial sectors. The organization has published more than 12,000 standards currently in use in industries worldwide.

More than 100 of those standards pertain to steel pipe, tubing, fittings and flanges. Unlike some standards organizations that impact steel pipe in specific industrial sectors, ASTM standards cover a wide variety of pipe used in just about every industry you can think of.

For example, American Piping Products stocks a full range of A106 pipe. The A106 standard covers seamless carbon steel pipe for high-temperature service. That standard does not necessarily limit pipe to any certain industrial application.

CANGZHOU WILSON PIPELINE manufacture of  flange fittings&pipes

ASME

The American Society of Mechanical Engineers began publishing standards for industrial tools and machine parts in 1880 and has been a driving force behind safety improvements to boilers and pressure vessels used across industrial sectors.

As pipe commonly accompanies pressure vessels, ASME standards cover a wide variety of pipe applications across many industries, same as ASTM. In fact, the ASME and ASTM pipe standards are largely identical. Any time you see a pipe standard expressed with both an ‘A’ and an ‘SA’—an example is A/SA 333—it’s a sign that the material meets both the ASTM and ASME standards.

API

As its name indicates, the American Petroleum Institute is an industry-specific organization that, among other things, develops and publishes standards for pipe and other materials used in the oil & gas industry.

Piping rated under an API standard can be very similar in material and design to pipes used in other industries under other standards. API standards are more strict and include additional testing requirements, but there is some overlap.

API 5L pipe, for example, is commonly used in oil & gas settings. The standard is similar to A/SA 106 and A/SA 53. Some grades of API 5L pipe comply with the A/SA 106 and A/SA 53 standards and therefore can be used interchangeably. But A/SA 106 and A/SA 53 pipe do not comply with all API 5L criteria.

ANSI

The American National Standards Institute was founded following a gathering of several industry standards organizations in 1916 with the goal of developing voluntary consensus standards in the U.S.

ANSI joined with similar organizations in other countries to form the International Organization for Standardization (ISO). The Organization publishes standards accepted by industrial stakeholders from across the world. ANSI also acts as an accrediting body that endorses standards developed by individual organizations for worldwide adoption.

Many ASTM, ASME and other standards have been endorsed by ANSI as acceptable common standards. One example is the ASME B16 standard for flanges, valves, fittings and gaskets. The standard was initially developed by ASME, but it’s been endorsed for use worldwide by ANSI.

ANSI’s efforts have helped open international markets for producers and suppliers of pipe due to its role in the development and adoption of common standards accepted globally.

The right pipe supplier

With decades of experience supplying pipe to customers of all industries all over the world, wilson pipeline  Piping Products understands the complexity —and the importance— of the many standards that govern the production and testing of pipe. Let us use that experience for the good of your business. By choosing American Piping Products as your supplier, you can focus on what matters most to you instead of getting bogged down in the details. We’ll handle that.

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Large diameter pipe cap

 The large variations of caps, are the so-called ellipsoidal or dished heads. There are used to close pipes of large diameters, and are similar to those used for constructing vessels.

large-diameter-pipe-cap
Large diameter pipe cap

WELD PREPARATION
Contents [hide]

1 WELD PREPARATION
2 STANDARD:
3 SURFACE TREATMENT:
4 KEYWORD:
5 COMMON SHAPES:
6 SIZE
For wall thickness less than 3 mm, the caps are supplied with plain weld ends. Larger thicknesses are supplied with the weld bevel of 37 ½°±2 ½°.

STANDARD:
ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M—1996, DIN2605 / 2615 / 2616, JIS P2311/2312

A234-WPB-Large-Diameter-Pipe-Cap
A234 WPB Large Diameter Pipe Cap

SURFACE TREATMENT:
Transparent oil, rust-proof black oil or hot galvanized.

Special design available All the production process are made according to ISO9001:2000 strictly.

KEYWORD:
cap,Seamless cap,Steel cap,Carbon Steel Seamless cap,pipe cap,cap end

Based on different materials, pipe caps include carbon steel cap, stainless steel cap, and alloy steel cap etc.
Depending on their construction, pipe caps contain threaded cap, tapered cap and anti-roll cap etc.

COMMON SHAPES:
Pipe caps can be in various shapes. Some of the common shapes are hemispherical, oval, square, rectangular, U shape and I shape.

SIZEcaps
Pipe cap: 1/2″-60″, DN15-DN1500

Wall Thickness:
sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s
Max. wall thickness: 200mm

Materials
Carbon steel: ASTM/ASME A234 WPB-WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

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Straight tee and Reducing tee

 The primary purpose of a Tee is to make a 90° branch from the main run of pipe. Standard there are 2 possibilities, on behalf of the equal tee and reducing tee. The equal tee (or straight tee) is used as the branch has the same diameter as the run-pipe.

Straight-tee-and-Reducing-tee

The reducing tee is used as the branch has a smaller diameter as the run-pipe.

Dimensions and Standards of pipe tees
When we talk about a tee NPS 3, a equal or straight tee is intended. With a tee NPS 3 x 2 a reducing tee is intended. Although, officially a reducing tee will be indicated by 3 diameters, namely 3 x 3 x 2 (A x B x C). The A & B measure stands for the Nominal Pipe Size of Run-Pipe, C measure stands for Nominal Pipe Size of Outlet.
This designation actually is superfluous, but comes from the time that tees were available in 3 different ends of diameters, such as 4 x 3 x 2 (A x B x C). In this implementation of course it is necessary, to specify 3 different sizes.
That kind of tees is probably no longer available. Applying a equal tee with a concentric or eccentric reducer is now the usual practice.
A straight or equal buttwelding Tee is available for all common diameters.
A Reducing Tee not, because many diameters are not produced, or can not be produced.

As an example: a reducing tee NPS 6 x 4 is a standard item for most suppliers, but a reducing tee NPS 16 x 2 is probably not available by any supplier.
It would also not economical to use a NPS 16 tee with a NPS 2 outlet; in such situations a Branch Fitting will be used or a Branch Connection will be made.
In addition to the defined tees, there are straight and reducing crosses.
Straight crosses are generally stock items, reducing crosses are often difficult to obtain.
I have never used that tees and I have they never seen in practice, at least not in petro and chemical industry. They will be used where space is limited, by revision work, in shipping industry et cetera.

Wall thickness Tee
By the shape of a tee, the wall thickness can be a critical item. ASME B16.9 only standardizes the end-to-end dimensions, center-to-end dimensions and some “squareness” dimensional tolerances. The wall thickness at the weld line location even is standardized, but not through the rest of the fitting. The standard states that the minimum tolerance will be within 12.5% of the minimum ordered wall thickness of the pipe. A maximum tolerance is specified only at the ends of the fitting.

tee-design
Pipe tee & crosses size

Many providers of welding tees (and elbows) provide one schedule greater thickness so that sufficient wall thickness, after forming, remains. In Tee’s, the crotch radius (T) varies from one manufacturer to another, but some establish itself as a requirement, 1.3 times the wall thickness to maintain the crotch.

ASME B16.9-2003 SECTION 2.2 DESIGN OF FITTINGS SAYS:
…it is expected that some portion of formed fittings may have to be thicker than the pipe wall with which the fitting is intended to be used
Because there is no maximum tolerance for some parts of the fitting, the customer itself must indicate his requirements. Depending on a customer specification, the manufacturer must certify that the manufactured tee, is made the requested requirements.
He can do that with additional drawings, with additional wall thickness measurements etc. verified by an independent party or a customers inspector.
All these additional tests cost money, so it can happen, that the additional costs, many times higher, as the tee itself.

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Cold Drawn Seamless tube, Cold Drawn Seamless tubing

 Cold Drawn Seamless tubing (also known as CDS). Cold Drawn Seamless tubes offer tight tolerances compared to Hot Finished Seamless tube, and offers stronger physical properties compared to other mechanical tubing.cold-drawn-seamless-tube

CDS is popular in the hydraulics, being used to make hollowed chrome plated telescopic cylinders and hydraulic rods. It is also popular for large bore, heavy walled, high pressure hydraulic cylinders. Cold Drawn Seamless tubes also find uses in heavy equipment manufacturing such as cranes and garbage trucks.

BARREL TYPE CROSS ROLL PIERCING PROCESS

tube_plug_drawing_process
This cold drawing process continues until the tube is at its specified final dimensions.

In this process, rounds are heated in the rotary hearth furnace/ slope type fixed bed heating furnace to a forming temperature of approximately 1280 degree C. This is followed by a high pressure water jet descaling, prior to which the bloom is pierced in the cross roll piercing mill to produce a thin-walled hollow shell which is elongated to between 3 and 4.5 times its original length. The elongation corresponds to a deformation level between 65 % and 75%. Owing to the relatively large angle of roll inclination, and higher rolling speeds, stock exit speed in the case of barrel-type piercer is considerably faster than in Mannesmann piercing mills.

General process of cold drawing
Contents [hide]

1 General process of cold drawing
1.1 THERE ARE THREE BASIC PROCESSES EMPLOYED FOR THE COLD DRAWING OF TUBE:
1.2 ANNEALING
1.3 STRAIGHTENING
1.4 EDDY CURRENT
1.5 FINISHING
A considerable proportion of the seamless tubes and pipes manufactured through the cold roll piercing technology undergo subsequent cold forming. The principal reasons behind cold drawing are:

Achievement of closer wall thickness and diameter tolerance
Improvement in surface finish
To enhance serviceability
No premature failure
Suitable for critical forming Such as 180˚ Bends
Enhancement of mechanical properties of the tube
Expansion of product mix towards the lower end of the OD and wall thickness scales.
THERE ARE THREE BASIC PROCESSES EMPLOYED FOR THE COLD DRAWING OF TUBE:
Hollow drawing
Stationery drawing or floating plug drawing and
Drawing over a mandrel (also known as drawing on-the-bar)
ANNEALING
After the goods are cold drawn to sizes, the tubes are put on annealing furnace for heat treatment and normalising.

STRAIGHTENING
Post annealing, the goods are passed through a seven roller straightening machine to achieve proper straightening of the tubes.

EDDY CURRENT
Post straightening, each tube is passed through eddy current machine to detect for surface cracks and other defects . Only the tubes that pass eddy current are fit for delivery to customers.

FINISHING
Each tube is either oiled with corrosion resistant oil or varnished for surface protection and corrosion resistant as per customers requirement, each tube end is covered by plastic end caps to avoid damage in transit, the marking and specs are put and the goods are ready for dispatch.

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"ASTM A213 / ASME SA213 T9 T91 T92 Alloy Steel Seamless tube for Boiler , Superheater , Heat exchanger application Yuhong Group supply huge qty of Cr-Mo Alloy seamless pipe and tube , and export more than 40 ... Read More"

 Alloy Steel Seamless Tube DIN 1629 St52.4, St52,  DIN 17175 15Mo3, 13CrMo44, 12CrMo195.

 

 

Alloy steel tubes is a kind of steel alloyed tube with other elements in amounts 
of between 1 and 50% by weight to improve its mechanical properties.Alloying 
elements are added to achieve certain properties in the material. As a guideline, 
alloying elements are added in lower percentages (less than 5%) to increase 
strength or harden ability or in larger percentages (over 5%) to achieve special 
properties, such as corrosion resistance or extreme temperature stability.  

 

Main Materials:

ASTM A335 (Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)

ASTM A335 P1, P2, P5, P9, P12, P11, P22, P91

ASTM 213(Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes) 
ASTM A213 T1, T2, T11, T5, T9, T22, T23, T91, T92

 

ASTM A335 Seamless Ferritic Alloy Steel Pipe For High Temperature

Mechanical Properties
Grade	Tensile strength(MPa)	Yield strength(MPa)	Elongation(%)	Impact energy(J)	Hardness
P11	≥ 415	≥ 205	≥ 22	≥ 35	≤ 163HB
P12	≥ 415	≥ 220	≥ 22	≥ 35	≤ 163HB
P22	≥ 415	≥ 205	≥ 22	≥ 35	≤ 163HB
P5	≥ 415	≥ 205	≥ 22	≥ 35	≤ 187HB
P91	585~760	≥ 415	≥ 20	≥ 35	≤ 250HB
P92	≥ 620	≥ 440	≥ 20	≥ 35	250HB

 

 

ASTM A335 Seamless Ferritic Alloy Steel Pipe For High Temperature

 

 

 

ASTM A213 ASME SA213 Alloy Steel pipe

 

 

OTHER Materials:

ASTM A199 T9, T11, T22 
ASTM A209 T1, T1A, T1B 
ASTM A210 C 
ASTM A250 T1 
ASTM A369 FP1, FP2, FP12, FP22, FP9 
ASTM A389 FP5 
JIS G3455 STS49 
JIS 3456 STPT49 
JIS G3458 STPA12, STPA 22, STPA23, STPA24, STPA25, STPA26 
JIS G3462 STBA12, 13, STBA20, STBA22, STBA23, STBA24, STBA25, STBA26 
JIS G3464 STBL39 
SEW610 10CrMo910 
DIN 1629 St52.4, St52 
DIN 17175 15Mo3, 13CrMo44, 12CrMo195 
GB9948 16Mn, 15MnV, 16Mo, 12CrMo, 15CrMo, 12Cr1MOV, Cr2Mo, 10MoWVNB, Cr5Mo, Cr9Mo, 
GB/T8162/8163 Q345, 20Cr, 40Cr, 20CrMo, 25CrMo, 30CrMo, 35CrMo, 34Mn2V, 42CrMo, WB36 

(15NICUMOB5) and 12Cr2MoWVTiB(R102) 
GB5310 12CrMoG, 15CrMoG, 12Cr1MoVG 
GB/T 17396 27SiMn 
GB18248 37Mn, 34Mn2V, 35CrMn, 34CrMo4 
Type: Seamless and welded 
Size: 
Outer Diameter: 6mm~1420mm 
Wall Thickness: 1mm~60mm 
Length: 12m, 11.8m, 6m, 5.8m or as requirement. Max.:25m.pc

 

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