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See Chinese contents: Q/BQB 265-2018 Q/BQB 265-2018: Heat-resistant casing
This Standard specifies the technical conditions for the delivery of heat-resistant casings of Baoshan Iron and amp; Steel Co., Ltd. This Standard is applicable to the seamless casing in heavy oil recovery of petroleum and natural gas industries and in other high temperature environments. The casing steel grades in this Standard are: BG80H, BG90H, BG100H, BG110H, BG110H-3Cr, BG130H-3Cr. The casing specified in this Standard contains three product specification levels (PSL1, PSL2, PSL3).
