China BB Cast Steel Globe Valve: Bolted Bonnet Cast Steel Globe Valves, 600LB, 12 Inch, WCB, WCC, LCB, Butt Welded, Plug Disc, ASME B16.34, BS 1873. Features: OS&Y, Rising Stem. Bolted Bonnet/Pressure Seal Bonnet. Plug Disc. Extended Bonnet for Cryogenic Services. Operation: Handwheel, Bevel Gear and Electric Operation. Specifications: Design: ASME B16.34/BS 1873. Face to Face: ASME B16.10. End to End: ASME B16.10. End Flange: ASME B16.5. BW End: ASME B16.25. Test: API 598. Special: NACE MR-01-75. Pressure: Class 600LB. Size Range: 12". Material Available: WCB, WCC, LCB, LCC, WC6, WC9, C5.