Wholesale LSAW Steel Pipe, Large Diameter Welded Steel Pipe_Hebei Haiqianwei Steel Pipe CO.,LTD

JIS standard Longitudinal Submerged Arc welding Steel Pipe
American Standard carbon steel pipe
EN standard Longitudinal Submerged Arc welding Steel Pipe
API 5L PSL1 Longitudinal Submerged Arc welding Pipeline

Straight seam welded pipe quality inspection and materials

Oct 27, 2018

Welded steel pipe should be tested for mechanical properties test and flattening test, flaring test, and to achieve the requirements of the standard. Steel pipe should be able to withstand the internal pressure, 2.5 Mpa when necessary the pressure test, no leakage in a minute.


Allows for eddy current flaw detection method instead of water pressure test. Eddy current flaw detection by GB7735 standard for steel tube eddy current flaw detection method. Eddy current flaw detection method is to probe fixed on the rack, inspection and weld 3 ~ 5 mm distance, rapid movement by the steel tube to weld a full scan, flaw detection signal of eddy current flaw detector automatic processing and automatic sorting, achieve the purpose of inspection. After inspection of welding work flying saw length cut off by the regulation, the turn off.


Should be flat on both ends of the steel pipe chamfering, printed mark, product packaging work hexagonal strapping after leaving the factory.


Domestic commonly used material is Q235A, Q235B, 0 cr13, 1 cr17 cr18ni11nb, 00 cr18ni9 cr19ni11, 1, 0, 16 mn, 20 #, Q345, L245, L290, X42, X46, X70 and X80. One X42 X46 X56, X80 material such as API standard material, not pipe commonly used materials in our country.


ABOUT US
Our company uses the most advanced technology of JCOE LSAW steel pipe manufacture in the world wide, specialized in producing heavy calibre LSAW steel pipe. The product line adopts PID automatic controlling continuous J-C-O forming technology, and the advantages of the product line are as below: high speed, high quality, low stress distribution, and low tolerance of size.
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TEL : +86-0317-6091369/6091199/8526088/8526080/8526070/
8526076/8526096/8526085/8526078/8526095

Fax Number : +86-0317-6091368

Website : www.hqwsteelpipe.com

E-MAiL : bright@hspc.cc

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