Spiral welded pipe SSAW
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Product Description
Spiral welded steel pipe is a steel pipe with seams on the surface that is bent and deformed into round, square and other shapes from steel strips or steel plates and then welded. According to different welding methods, it can be divided into electric arc welded pipe, high frequency or low frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bundy pipe, etc. According to the shape of the welded seam can be divided into straight seam welded pipe and spiral welded pipe. Electric welded steel pipe is used for oil drilling and machinery manufacturing. Furnace welded pipe can be used as water and gas pipe, etc. Large diameter straight seam welded pipe is used for high pressure oil and gas transmission, etc.; spiral welded pipe is used for oil and gas transmission, pipe piles, bridge piers, etc. Welded steel pipe has lower cost and higher production efficiency than seamless steel pipe.
LSAW pipe production process is simple, high production efficiency, low cost, and faster development. The strength of spiral welded pipe is generally higher than that of LSAW pipe, and can produce larger diameter welded pipe with narrower billets, and can also produce welded pipe of different diameters with the same width of billets. However, compared with the same length of straight seam pipe, the weld length increases by 30 to 100%, and the production speed is lower. Therefore, most of the smaller diameter welded pipes are straight seam welded, and most of the large diameter welded pipes are spiral welded.
Common materials：
Q235A, Q23b, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, Q345, L245, L290, X42, X46, X70, X80.
Standard：
GB/T 9711-2011 (national standard, also known as the first part of the technical conditions for the delivery of steel pipes for the oil and gas industry: Class A steel pipe (to date, the strict requirements have GB/T9711.2 Class B steel pipe)), API-5L (American Petroleum Institute, also known as pipeline steel pipe; which is divided into PSL1 and PSL2 two levels), SY/T5040-92 (spiral seam submerged arc welded steel pipe for pile arc welded steel pipe)
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Cangzhou Boqiang Pipeline Co., Ltd.