API 5L SSAW PIPE ,USED FOR TRANSPORT WATER,OIL,GAS,ETC. The Brief IntroductionCangzhou Spiral Steel Pipe Co., Ltd located at No.92 JieFang East ... OK Anticorrosion Thermal Insulation Project Co.,LTD., Cangzhou Spiral Steel Pipe Co., LTD Laiwu Branch subordinate companies.The company has thirteen ... with the standard of SY/T5037-2000, GB/T9711 and API SPEC 5L, the material can be Q235A/B,Q345B, L245,L360 ...