We have 4 typical production lines, which can produce hot rolled Seamless, LSAW, ERW and SSAW pipes. SSAW pipe production line range is OD 219.1mm-3500mm, wall thickness 3.2mm-25.4mm. Product A709 grade 36 bridge steel plate annual capacity is 200 thousand tons.
A709 grade 36 bridge steel plate 2020 stock in Tianjin: 7*2920*8200, 32*3000*7440, 14*2150*9300, 16*2200*10000, 12.5*2900*11000, 7*2920*8200, 14*1950*11000, 80*2200*10000, 16*2230*7650, 7*2920*8780, 32*2900*9700, 20*1950*9550, 10*2200*7200, 23.1*2590*7790, 20*1400*11400, 20*1950*9700, 7*2920*8780, 20.9*2851*7000, 25*1600*9300, 30*2200*9000, 14*1950*10550, 30*1600*8600.
ASTM A633 material is particularly suited for service at low ambient temperatures and higher where notch toughness better than that expected in as-rolled material of a comparable strength level is desired. A709 grade 36 bridge steel plate, A633 Grade E high-strength low-alloy structural steel provides a minimum yield point of 60 ksi [415 MPa] in thicknesses up to 4.0 in. [100 mm], inclusive and 55 ksi [380 MPa] in thicknesses over 4 in. to 6 in. [100 to 150 mm], inclusive.
Normalizing is a special case of annealing, the effect is similar to annealing, but the microstructure obtained by normalizing is finer. For low or medium carbon steel, normalizing can improve hardness and machinability. For A709 grade 36 bridge steel plate medium carbon steel and low alloy steel, normalizing can refine grain and uniform structure and reduce hardness. For high carbon steel and high alloy steel, normalizing can eliminate the network carbide produced by forging and improve the homogeneity of the preparation heat treatment structure.
