seamless steel pipe
Size
outer diameter: 10-325mm
wall thickness: 2-35mm
length: random length or fixed length
Quality Standard
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
GB/T8163 Seamless steel pipe for liquid transportation
GB/T8162 Seamless Steel Tubes for Structural Purposes
DIN 2391 Seamless Precision Steel Tubes
Steel Grade
ASTM A 53: Grade A, Grade B, Grade C
GB/T8162: 10, 20, 35, 45
EN 10210: S235JRH; S275J0H, S275J2H; S355J0H
Heat treatment
Annealed: Bright annealed, , Spheroidize annealed
Normalized, Stress relieved, Cold finished
Test
Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), X-RAY