Hiwa Fittings(www.hiwaflow.com) , the professional pipe fittings produce dept., which belong to Huihua Valve Co Ltd.(http://www.hiwa.cn) --- The CE,WRAS and SGS ISO9001 Approved Valve and Fittings Manufacturers in China. Our main line as the following: Ductile Iron Fittings:·Universal Coupling·Universal Flange Adaptor·Restrained Flange Adaptor & Coupling for PE/PVE Pipes-----New Products·Universal Flange Adaptor ,Universal Coupling ·Restrained Flange Adaptor and Coupling for PE Pipe ·Dedicated Flange Adaptor and Coupling for DI/STEEL Pipe·Quick Flange Adaptor for PVC/PE Pipes·Saddle Clamp·Repair Clamp·Dismantling Joint.·BS EN545, ISO2531 Ductile Iron Fittings.·Loose Flange DI Pipe Fittings·Ductile Iron Fittings for Upvc pipes.·Rubber Expansion Joint Huihua are always enlarging, in the year 2002, we have Zibo Huihua Valve Industry Co. founded in Zibo New&High-tech Industrial Park ,Shandong Province,China, which is functioning perfectly in very aspects. In 2004, 33350 square meters new factory of Huihua is to be built in Xiaozhan Developing District of Southern Tianjin City, 66666.67 square meters new factory of Huiha just in building in Binzhou City, Shandong Province, which shows Huihua are opening a new history .