After cold expansion for lsaw steel pipe, steel tube and pipe end diameter will increase by about one percent difference in diameter of the diameter, roundness, and the pipe ends are greatly improved, also have greatly improved the straightness of the steel pipe, steel pipea length of about 0.5% reduction in wall thickness decreases by about 0.8%. Fully develop LSAW process should consider these changes, to determine the pipe plate width, length and thickness, and the pipe diameter in front of the enlarged diameter, in order to avoid the enlarged diameter steel pipe geometry reach the final requirements caused by substandard.
The purpose of cold expansion for lsaw steel pipe has the followings:
(1) Improve pipe end geometric dimensional accuracy of LSAW steel pipe, so that the diameter of the steel tube and pipe end, roundness, and the diameter of the pipe ends Poor meet the standard requirements, facilitate field welding construction.
(2) Reduce inhomogeneous deformation of LSAW steel pipe forming and welding process and decrease the residual stress of forming and welding of tube, and improve its distribution, improve the overall mechanical properties of the steel pipe.
(3) Inspect the steel pipe overall performance comprehensively and effectively.
(4) Improve the straight degree of lsaw steel pipe, especially for the smaller diameter LSAW pipe straight is more obvious.
Tuesday, January 4, 2022
The purpose of cold expansion for lsaw steel pipe
Related Posts:
Oil & Gas Non-Metallics 2016Oil & Gas Non-Metallics 2016International conference on polymer material selection, qualification and use in oilfield and gas engineering applica… Read More
The matters that should be decided by the design personnel of stainless steel pipe fittingsStainless steel pipe fittings design:Stainless steel pipe fittings design personnel should decide the matter is very much, and every problem needs to … Read More
Outer wall and inner wall of stainless steel pipe fittings and componentsControl measures to prevent corrosion of outer wall and inner wall of stainless steel pipe fittings and components(a) minimum requirements and procedu… Read More
The phenomenon of long strip shape in the inner arc of stainless steel pipe fittingsThe so-called “drum” is not fit to die, bulge phenomenon strip stainless steel arc tube.Causes:(1) the outer mould under pressure, no pres… Read More
What is socket weld flange?What is socket weld flange?Socket welding flange, a popular type of pipe flange, was initially developed for use on small-sized high- pressure piping.… Read More
Standard Reference for Seamless Steel Pipe
1. Seamless steel tube for structure (GB / T8162-1999) is a seamless steel pipe for general structure and mechanical structure. 2. Seamles...

0 comments:
Post a Comment