Structure tube
"standard
GB/T 8162 Chinese National Standard
DIN 1629 German Industrial Standard
"use
For the manufacture of pipes Container Equipment Fittings and steel structures
》Production specifications and materials
Specifications: 20--356×4--70
Material: 10, 15, 20, 35, 45, 20Mn, 25Mn, Q345 (A, B, C, D, E), 40Mn2, 45Mn2, 27SiMn, 37Mn5, 40MnB, 45MnB, 20Mn2B, 20Cr, 40Cr, 12CrMo, 15CrMo , 20CrMo, 35CrMO, 42CrMo, 12CrMoV, 12Cr1MoV, 38CrMoAl, 20CrMnSi, 30CrMnSi, 20CrMnTi, 30CrMnTi, 40CrNiMo, etc.
》Steel pipe manufacturing method:
Hot rolled or cold drawn (rolled).
"delivery status:
1. Hot-rolled steel pipes should be delivered in hot-rolled or heat-treated state. When the heat treatment is required to be delivered, it should be stated in the contract.
2. Cold-drawn (rolled) steel pipes shall be delivered in a heat-treated condition. According to the requirements of the buyer, after consultation between the supply and demand sides, and in the contract, it can also be delivered in cold rolled (rolled) state.