Straight seam welded pipe has simple production process, high production efficiency, low cost and rapid development. The strength of the spiral welded pipe is generally higher than that of the straight welded pipe. It is possible to produce a welded pipe with a large diameter by using a narrow blank, and it is also possible to produce a welded pipe having a different pipe diameter by using a blank of the same width. However, compared with the straight pipe of the same length, the weld length is increased by 30 to 100%, and the production speed is low. Therefore, most of the smaller diameter welded pipes are straight seam welded, and the large diameter welded pipes are mostly spiral welded.
Finish Machining Ball Valve Closure / Cover
API 6D Finish machine ball valve closure, ball valve cover, ball valve bonnet, ball valve body, ball valve shaft, Ball Valve Parts
API 6D Finish machine ball valve closure, ball valve cover, ball valve bonnet, ball valve body, ball valve shaft, ball valve parts
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