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Prism Flowprismflow.com/wp-content/uploads/2018/01/DHV-Mud-Gate...4140+NBR 4130 -N Mud Gate 10 4-1/16" Valve 223 19 3000psi 330 Material NBR NBR 090 HSN POLYPAK ASTM A193- ASTM A194-

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  • 封面3第一页2第2页2第3页2第4页2第5页27页2