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A573/A573M steel has grades including 58, 65 and 70. The coil is suitable for structural grade carbon-manganese-silicon steel in 3 tensile strength ranges. ASTM A573/A573M steel coils are mainly used to improve notch toughness at room temperature.

ASTM A514 steel is available in several grades. And they have the same mechanical properties. ASTM A514 steel coils are conventionally quenched and tempered steel with high yield strength, weldability and toughness. ASTM A514 steel is a special high-strength steel, mainly used as building structural steel.

ASTM A283 cold rolled steel coil has low and medium tensile strength. The ASTM A283 steel specification covers four structural quality grades of mild steel, grades A, B, C, and D, for general application.

A36 is a carbon structural steel coil whose chemical composition and mechanical properties strictly conform to American ASTM standards. Good mechanical properties, welding performance and corrosion resistance are basically why they are widely used in construction, bridges, machinery manufacturing and other fields.

Galvanized steel pipe, also known as galvanized pipe, is divided into two kinds of hot-dip galvanized pipe and Electro galvanized pipe. The hot-dip galvanized layer is thick, the coating is uniform, the adhesion is strong, and the service life is long.

Resistance welded pipe ERW is formed by hot rolled coil through forming machine. The skin effect and proximity effect of the high frequency current are used to heat and melt the edges of the tube blank.

The longitudinal submerged arc welded pipe is made of steel plate as raw material, which is formed by a forming machine, and then double-sided submerged arc welding is carried out. Through this process, the LSAW pipe will have excellent ductility, toughness, uniformity, plasticity and good sealing performance.

The spiral submerged arc welded pipe is made of hot-rolled steel strip through constant temperature spiral forming and automatic submerged arc welding. The manufacturing process is to roll the steel strip, make the rolling direction at a certain angle to the center direction of the tube, and then form and weld, so the weld is spiral. 

EN10219 welded steel pipe is a round steel pipe that complies with European standards and its material is S235JR. This material has good plasticity and weldability, as well as good mechanical properties and corrosion resistance.