According to the different needs of customers, Yanshan Xingsong Steel Pipe Co., Ltd. invested in the construction of two 3PE anti-corrosion steel pipe lines, one-step forming production line of polyurethane insulated steel pipe, two spiral welded steel pipe (SSAW) insulated spiral steel pipe production lines and three hot-rolled and expanded seamless steel pipe production lines in Cangzhou Industrial Park, all of which adopt today's advanced production equipment and Lincoln automatic submerged arc welding machine, It is equipped with on-line digital ultrasonic flaw detector, hydrostatic testing machine, X-ray real-time imaging machine and other complete quality inspection instruments. Spiral welded steel pipe, anti-corrosion straight seam pipe, thermal insulation spiral steel pipe and other products have been tested by & ldquo; China petroleum industry special pipe quality supervision and Inspection Center & rdquo; Inspection, all up to standard. Its leading products are: & phi; 219mm-Φ 3600mm spiral welded steel pipe (SSAW) with wall thickness of 6mm-30mm, insulated spiral steel pipe& Phi; 16mm-Φ 820mm hot rolled hot expanded seamless steel pipe with wall thickness of 2mm-50mm& Phi; 400mm-Φ 3500mm large diameter straight seam pipe (LSAW) with wall thickness of 6mm-100mm; The product shall comply with apispec 5L and GB / t9711 1-1997, SY / t5037-2000, GB / t3091-2001, GB / t8163-1999, GB / T8162-1999 and other standards. The material is Q235, Q345B (16 manganese), 10# steel, 20# steel, L245, L290, L360, x45 and other steel grades. The annual anti-corrosion and thermal insulation production capacity of the company is 1 million square meters