Tianjin Shenzhoutong Steel Pipe Co., Ltd (SZTSP), with investment RMB 160 million, was founded in 2001 and occupies a site space 86, 000 sq. meters and building area 12, 600 sq. meters. It is located at the south of Tianjin city, close to the Tianjin airport, Tanggu harbor and two railways. Our main product, yearly output is 120 thousand tons, is High Frequency Welded(HFW)steel pipe, OD: 51/2(139.7)～133/8 inch(339.7mm) Wall thickness: 0.138(3.8)～0.436 inch (11.1mm), Steel grade:　A、B、X42-X65, H40, J55 Standards: API spec 5L, API spec 5CT, ASTM A53, EN10219-2 BSEN10210-2, GB/T9711.1 (ISO3183.1), GB/T9711.2 (ISO3183.2) etc. Our products are widely used in transporting petroleum, natural or coal gas, coal or ore slurry and used as casing and in machinery, construction, electricity and aviation industries. Shenzhoutong steel pipe is high-accuracy pipe, because of the advanced process and equipment such as FF forming, HF induction welding, MF heat treatment, round cutter of inside flash trimming and seam/body UT on line and off line, to ensure the pipe accuracy. Shenzhoutong steel pipe is high-quality pipe, owing to performance of four inspection system: first pieces inspection, self-check, mutual check and specialized inspection, we have qualified workers, experienced experts and management staffs, to guarantee the pipe quality. Shenzhoutong steel pipe is reliable pipe, due to the practice of ISO9001-2000 and API spec Q1 quality management system, to assure the delivered acceptance is 100%. Our company’s strategy is abidance by the law and trust, creation of innovations and honors, philosophy is manufacture of excellent product depends on person’s high quality and we combine three superiorities: talented person, perfect management and advanced technology, to deliver satisfactory products and services to our customers at home and abroad.