Erw steel pipe Our company can produce the outer diameter 114mm-340mm and wall thickness 4.0mm-14mm Erw steel pipes, the company produces different types of erw steel pipes 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 and sy/t5768 and overseas standards of api spec 5ct , api Spec5l, astm a53, and 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.