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:
How to properly use stainless steel blind flangeStainless steel blind flange with the rapid development of domestic foreign minister pipeline construction, pipeline pressure test become an indispens… Read More
Key points for use of stainless steel head1, Please measure the outer circumference of the stainless steel head. If the cylinder is processed in advance, please inquire with the company about … Read More
The processing of alloy elbowsAccording to the research institutions to verify that the life of the coating depends on the type of coating, coating quality and construction environ… Read More
The processing method of pipe fittingsThere are many kinds of processing methods for pipe fittings, many of which are in the category of mechanical processing, and the most used are punchi… Read More
The technical requirement of stainless steel pipe fittingsThe technical requirements of stainless steel pipe fittings are clearly defined in various standards or technical agreements. The main contents includ… 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