Zhejiang Weidouli Valves Manufacturing Co., Ltd. produces the special valves. Valve types: Ball valve, Gate valve, Globe valve, Check valve, Plug valve, Butterfly valve, Discharge valve and Non standard valve. Material range: Titanium, Nickel, Hastelloy alloy, Monel alloy, Inconel, Duplex steel, Zirconium. Other material: cast steel, stainless steel. Leading products are special material valves Titanium valve, Nickel valve, Hastelloy valve, Inconel valve, Monel alloy valve, Dual-phase steel valve and Zirconium valve. Widely use for: these kinds of special material valves are used on large fields like chemical industry, Air defense Weapons , Petrochemicals, Marine Development, and power industry which have strong corrosive mediums like acid, alkali and salt. Quality system: API 6D (American Petroleum Institute API6D Certificate) ISO 9001:2000 (Det Norske Veritass ISO9001:2000 Certificate) Design Standard GB, JB, API, ANSI, ISO, BS, DIN, NF, JIS and so on You are welcome to visit our website or company, to better understand our product range and quality. Wish it be useful for your business, we shall will to answer your detail inquiries at any time.