The range of production: OD: 1/2” -24 “(21.3mm -609mm) W.T: SCH10-40(2mm to 20mm) Standard: API 5L/ASTM A53/A671/A672/A252/A500,EN10217/10296. etc. Materials: X42, X52, X60,Q235B, Q345B, GR.B,S275, S275J0H, S355JOH, SS400 Length: 5.8M/6M/12M/18M fixed length, SRL/DRL HFW feature and application: HFW features: simple production process, high production efficiency, low cost, fast delivery HFW steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. Used for liquid transportation: water supply and drainage. Used for gas transportation: gas, steam, liquefied petroleum gas. For structural purposes: as piling pipes, as bridges; pipes for wharves, roads, building structures, etc.