... clear communications.2. We can provide various of single/double Union valves, check valves, membrane valves, bottom valves, gate valves, ... We can provide moulds like elbow, coupling, tee, reduce, cap, union, flange, flexible connector, water supply and sewerage pipe fitting moulds ... surface, handle, standard, MIX, MAX, temper ture, connection, certification, ISO, API, ISA, specification, type, etc.