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Standard Steel Grade Size Range ASME SA335 P11, P12, P22, P36, P91, P92 OD: 114mm to 1168mm WT: 6mm to 140mm ASME SA213 T5,T9,T11,T22,T91,T92 OD: 21.3mm to 127mm WT: 2.11mm to 12.7mm ASME SA519 4140, ...