contact:Lynn@rkvalves.com RK Marine Valve Manufacturing CO.,LTD. Is specializing in producing marine valves and air vent(pipe) head according to JIS, DIN, GB, CB Standard. Our factory covers 50,000 square meters, and nearby the speedway. We have got ISO9001:2000 International Quality System Certification. And the product are certificated by many classification societies. Our main products include globe valve, screw down check valve, check valve, hose valve, gate valve, down storm valve, butterfly valve, air vent head and other marine accessories. The materials are mainly cast iron, ductile iron, cast steel, bronze,brass and stainless steel. Pressure: 5K-30K. DN: 15mm-450mm. We have exported to Germany, Japanese and South Korea and so on. We can provide quality products and competitive price. We truly hope to establish mutual beneficial relationship with more companies worldwide to develop business together. For detailed information please browse our web:3w.rkvalves.com. Lynn()rkvalves.com