We can produce the outer diameter 0.5in-14in(20mm-355mm) ERW steel pipes. The company produces different types of ERW steel pipe 150, 000 tons yearly, including casing and tubing, petroleum and natural gas transmission pipes, liquid delivery pipes and structural pipes according to the latest domestic standards of GB/T9711.1, GB/T9711.2, GB/T3091-2001 GB/T13793-92 and SY/T5768 and overseas standards of API Spec 5CT, API Spec 5L, ASTM A53, EN 10217\EN 10219and other related standards, all these steel pipes are suitable for the industries of petroleum, natural gas, shipbuilding, chemical, environmental protection, boiler, water conservancy, electrical industry, steel structure, building and other such related fields.