We are specialized in producing high-tech ERW (Electric Resistance Welded) and SSAW (Spiral Submerged Arc Welded) pipes. Our company has advanced O.D.457.2mm high-frequency straight seam resistance welding machine, and O.D.3048mm spiral submerged arc welded machine. on-line ultrasonic testing device, off-line ultrasonic testing device, plain ends and beveling ends machine, hydraulic pressure testing machine as well as necessary mechanics testing, physical and chemical inspection center. We can produce ERW steel pipes with outer diameter 1/2in-18in and wall-thickness 1.65mm-14.27mm, as well SSAW steel pipes with outer diameter 8in-120in and wall-thickness 4mm-30mm. Our company produces different types of ERW and SSAW steel pipe 600, 000 tons annual, including casing pipes for exploration of oil and gas, oil and gas transmission pipes, fluid transportation and structural pipes based on the domestic standards of GB/T9711, GB/T3091, GB/T13793, SY/T5768, SY/T5037 and SY/T5040, and international standards of API Spec 5CT, API Spec 5L PSL2, ASTM A53, ASTM A252, EN 10217, EN 10219, and other related standards. All these steel pipes are suitable for the industries of oil, natural gas, ship building, chemical, environmental protection, boiler, water conservancy, electrical industry, steel structure, building and other related fields.