... : Items Descriptions MaterialPVC-U , PPRProductsPipelines for water supply and drain ,Female and male Coupling ,Socket, Cap , Tee , Adapter , ... Reducer, Union , Plug , Pipe Clip , Valve , Plastic Tap and Mould , pipe fittingsSize1/2"– 4" 20-110mmStandardASTM D2466,ASTM D2665 ... from minimum thermal conductivity5) Lightweight, convenient to transport and handle, good for labor-saving6) Smooth inner walls ...