seamless steel pipe A106 GrB 20# c20
1.Standard:
GB8162-2008 GB/T8163-2008 GB3087-2008 GB9948-2006 GB5310-2008
2.Chemical composition
C :0.17%~0.2% Si:0.17%~0.37% Mn:0.35%~0.65% S :≤0.035% P :≤0.035% Cr:≤0.25% Ni:≤0.25% Cu:≤0.25%
3.Mechanical property
Tensile strength σb (MPa):≥410(42),Yield strength σs (MPa):≥245(25) Elongation δ5 (%):≥25 Reduction area ψ (%):≥5
4.Processing
Hot-rolled (extruded seamless pipe): round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off the pipe diameter (or reducing) → cooling → → straightening → billet tube inspection Wall thickness → hydrostatic test (or testing) → mark → storage.
5.Delivery condition:hot rolled
6.Size offer:
OD:20-356 Thickness:5-70mm,Length:3-5.8m, or as required
