300lb flange type forged steel all welded ball valve product features: 1. Don't need maintenance, adjustments and lubrication, easy to install, low in operation cost under the long- term reliable ...

Title of Legally Binding Document: Steel Gate Valves (Flanged and Butt-welded Ends) for Petroleum, Petrochemicals and Allied Industries Number of Amendments: 1 Equivalence: Superceding: Superceded by: ...