Seamless Ferritic Alloy Steel Pipe for High Temperature Service)
P1, P5, P9, P11, P12, P22, P23, P91
ASTM / ASME A 691 GR 1 CR , 1 1/4 CR , 2 1/4 CR, 5 CR , 9CR , 91
DIN17175-79 Electrical Resistance
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