Profile: Zhejiang Sanwei Valve Company Limited sells gate, globe, insulating ball, butterfly and check valves. Our products are widely used in chemical, fertilizer, metallurgical, medicine, power, oil and liquefied gas industry. Our valves are especially designed for potabilization plants in their reverse osmosis processes. We manufacture steel pipes like carbon, alloy and stainless steel pipe. Our pipes are used for conveyance of gas, petroleum, liquid & electricity for boilers, chemical industries, petroleum cracking and construction. We are accredited with ISO 9000 certification.