We are Jinan Hongyang Petroleum Machinery Co., Ltd., PR China, specialized in manufacture & supply of replacement parts of drilling machine for more than 12 years. Especially the fluid end expandable parts of wide variety of mud pump, such as Modules,Hy-chrome Liner and Piston,Valve and Seat. we have our own factories & warehouse and the quality of our products are as good as OEM for direct replacement & even better and strictly follow the standard of API-7K,which have been successfully proven under the drilling conditions of extreme pressure, high temperature and corrosive environment.