... ,BS, JIS, UNI, ANSI, ISO etc. We are able to supply the products as follows:1) Materials include: Stainless ... OEM Service6) Special design is available.7) ISO9001:20008) Standard: ASTM, BF,BS, JIS, UNI, ANSI, ISO ... etc.valve stem of 303 stainless steel4"API Gate ValveMaterial: Alloy Steel, ... be polished1. We cast and machine stems of different sizes and types.2. The materials ...