GB/T8162-87 Seamless steel pipe 1)Thickness: 2.5-75mm 2)Outer Diameter: 32-630mm 3)Application: Fluid Pipe 4)Certification: ISO9001: 2000Seamless type Outer Diameter Thickness Length Round Pipe 32 mm - 630mm 2.5 mm-75.0mm any length Square Pipe 10mm*10mm-600mm*600mm 1.5mm-75.0mm any length Rectangle Pipe 20mm*10mm - 400mm*300mm 1.5mm-55.0mm any length L/T/Z window section 28mm/38mm 0.5mm-1.5mm any length
