Size: Outer diameter: hot finish: 2" - 30", cold drawn: 0.875" - 18" Wall thickness: hot finish: 0.250" - 4.00", cold drawn: 0.035" - 0.875" Length: random length, fixed length, srl, drl Heat treatment: annealed, normalized Surface: zinc coating, black phosphated, oiled Packing: plastic plugs in both ends, hexagonal bundles of max. 2, 000kg with several steel strips, two tags on each bundle, wrapped in waterproof paper, pvc sleeve, and sackcloth with several steel strips Test: chemical component analysis, mechanical properties (ultimate tensile strength, yield Strength, elongation), technical properties (flattening test, flaring test, bending test, hardness test, blow test, impact test etc), exterior size inspection, nondestructive test (ultrasonic flaw detector, eddy current flaw detector), hydrostatic test., Mill test certificate: en 10204/3.1b 1.Seamless steel pipe :od 1/4 inch-30inch w.T 1.25mm to 50mm, 2.Erw steel pipe/lsaw steel pipe: od 1/2inch-52inch w.T 1.65mm to 25mm 3.Spirally welded steel pipe: 219mm to 3120mm .W.T 3mm to 25mm