20G steel characteristic:
20G steel tube is belongs to GB / 5310 GB steel, and it is widely used in boiler pipe steel.
20G seamless steel has a certain temperature and high temperature strength, low carbon content, better plasticity and toughness, Its hot and cold forming and welding performance is good.
20G steel Chemical Composition:
|
Grade |
C% |
Si% |
Mn% |
P% |
S% |
|
20G |
0.17~0.24 |
0.17~0.37 |
0.35~0.65 |
≤0.04 |
≤0.04 |
20G steel Mechanical Property:
Yield point σ ^ s - not less than 250MPa
Tensile strength σ ^ b - not less than 420MPa
Elongation δ ---- not less than 25%
Section shrinkage ψ ---- not less than 55%
Application:
GB / 5310 20G steel tube is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, car drive shaft, bicycle frame and construction scaffolding and so on.
20G steel tube (Seamless Steel Tube) is a hollow section. In addition, when Circle section subjected to internal or external radial pressure, the force is more uniform, so the vast majority of steel pipe is a round tube.
