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No Types Standard Grade
1 Welded steel pipe:
Straight welding & spiral welding
GB/T3091, GB/T9711.1, API5L, ASTM A53,
A335, A500, A671, EN10255, DIN2440,
JIS G3452, BS1387, EN39, BS1139,
ASTM A500.Gr.A.B.C.DIN2394/2395,
JISG3444;JISG3446,
Q195, Q215, Q235, Q345B,
X42, X56, P11, ST35, ST52,
S235JR, STP430, X65…
2 Seamless steel pipe GB/T8162, GB/T8163, API5L, A106, A53,
A335, A333, DIN1629, DIN2448, NF A49,
GOST8731, JIS, G3454
20#, Q345B, GR.B, X42, ,56, X65,
P11, P22, ST37, ST45.8, ST52,
S235JR, S355JR, STP430S…