Carbon steel pipes for carbon content less than 0.25%, due to its low strength, low hardness and soft, it is also known as mild steel. It includes most common carbon structural steel and a part of high quality carbon structural steel. The steel pipe has a hollow section and is widely used in machinery, architecture, oil, natural gas, central station, boiler, power station, ship, chemical, environmental protection, food and other industries. Material Standard: ASTM, ASME and API; High Temperature Carbon Steel Pipe: ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B; Low Temperature Carbon Steel Pipe: ASTM A333 Gr. 3/6; High Yield Carbon Steel Pipe: API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80and higher. PSL-1/PSL-2; Form: Round, Square, Rectangular Etc; Outer Diameter: 20MM~508MM; Wall thickness: SCH 10. SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, to SCH 160; Length Range: 20 FT (6 meter), 40FT (12 meter)or customized; Ends Type: Beveled ends, Plain ends; End Protection: plastic Caps or iron Caps; Surface Coatings: Natural, Varnished, Black painting, FBE and 3PE, Cladding and Lined etc.