Corrosion,Resistance,Seamless, technology Corrosion Resistance of Seamless and Welded Steel Pipe
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The pipes welded on the basis of the valid calculations (AD-data sheet 2000 / ANSI B 31.3 / ASME VIII) are of exactly the same quality as seamless pipes, providing a 100 % weld check has been performed. With the production of longitudinally welded pipes, carefully selected welding procedures are used, combined with the state-of-the-art testing technologies (e. g. digital X-ray inspection). In the process, the corrosion resistance in the weld area is kept constant by using higher alloyed welding additives, i. e. at least at the level of the base material. The assessment of the interior pressure calculation for seamless pipes is 100 %. This can also be ensured with welded steel pipe when combined with a complete weld check (welding factor v = 1.0). As a result of this reliability of the production process, the longitudinal seam in the welded pipes does not constitute a weak point. Circumferential welding with both seamless and LSAW steel pipemust therefore be performed to a high-quality level and must take account of the specific parameters.More information,pls visit:Hunan great steel pipe co.,ltd
Corrosion,Resistance,Seamless,