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/PVC Pipes-----New Products
•Universal Flange Adaptor ,Universal Coupling
•Restrained Flange Adaptor and Coupling for PE/P...