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See Chinese contents: Q/BQB 267-2018 Q/BQB 267-2018: Casing for high performance of strength and toughness
This Standard specifies the technical conditions for the delivery of casing for high performance of strength and toughness of Baoshan Iron and amp; Steel Co., Ltd. This Standard is applicable to the seamless casing for ultra-deep, ultra-high pressure, and complex stratum rheology oil and gas production environments in oil and gas production of petroleum and natural gas industries. The casing steel grades in this Standard are: BG110V, BG125V, BG140V, BG150V, BG155V. The casing specified in this Standard contains three product specification levels (PSL1, PSL2, PSL3).
