спирально сварные стальные трубы

A252 Gr.B spiral steel pipe 1. Advantage: Large OD. Thick wall pipe. high quality and lowest price. varnish coating for anti-corrosion 2. standard: API 5L. GB/T9711.1 3. materials: Q195. Q235, Q345, API 5L X42-X52 4. usage: oil pipelines, water-project, natural gas transportation,electric and chemical industry, drainage project and city construction, etc. 5. coating: black painting, 3PE. 2PP/3PP. galvanised,FBE 6.inspection: chemical component analysis X-RAY hydrostatic testing We are specializing in steel pipe for many years. the mainly products we produce including SSAW steel pipe, ERW steel pipe. LSAW steel pipe, SEAMLESS steel pipe and so on, all of our products are made under the ISO 9001:2000 strictly, and in accordance with the standard of ASTM, API, BS, EN, DIN, JIS, GB. Our products process includes coils stockyard, unwinding, end cutting, end connection, edge preparation. both inside and outside are welded. the test we often take hydrostatic testing, pressure testing, ultrasonic,etc. welcome to contact us. we promise that you can get what you want in time with the most suitable price.