Tieling Special Valve Corp, formerly called Export Factory of the Tieling Valve Works, Tieling Valve Works was established in 1935, one of leading enterprises of the Ministry of Machinery & Industry of the nation with a history of more than seventy years and has been famous for manufacturing of low pressure and large size valves. In 1997, the Works was reformed and the Export Factory was co-respondingly reformed and renamed as Tieling Special Valve Corp. which is independent in operation and legal person, till now, the special valve company owns fixed assets of 56 million RMB, there are 520 employees among whom 45 are technicians.
The special valve company covers an area of 36000m2 among which 10000m2building area. The company is a complete manufacturer with casting, welding, machining, assembling and testing shops. In the new century, the company has invested large sum of funds to enlarge the company's technical improvement, accelerating technical innovation and to speed up replacement of the products.
Advanced physical and chemical analysis shop and test shop can provide composition and performance test of materials as well as life, flow resistance, flow characteristic, corrosion, abrasion tests.
Manufacturing facilities owned by the company: Casting: resin sand casting line, cupola furnaces, wooden mould shops, cavityless casting line, casting capacity per year: 5000 tons. Machining: 5m vertical lathe, 4m vertical lathe, 2m face lathe, T68/T613 boring machine, Z3025, Z535 drilling machines, annual machining capacity: 8000 tons. Welding: 6.3mm cutting machine, 20mm rolling machine, 50mm plasma-arc surfacing machine, annual welding capacity: 2000 tons.
Main products are: butterfly, gate, check (non-return), air and flow control valves, spherical valve, penstock, extension joints and instrument. Suitable medium are: water, sewage, sea water, air, steam, high temperature furnace air and oil products. Main materials of the valve parts (body/disc): gray cast iron, ductile iron, cast steel. Sealing types are: metal to rubber, metal to metal. Driving types are: manual, electrical, hydraulic and air operated. Nominal pressures of the medium are: PN0.001-6.4Mpa. Nominal diameter of the valves: DN50 -6000mm . Applicable standards are: ISO, BS, AWWA, DIN, JIS and China National Standard. Among the products, metal seated butterfly valve, hydraulic butterfly valve with counter weight, resilient seat gate valve, zero friction metal seated butterfly valve and spherical valve are designed and developed by the company itself.
In 1995, we are accredited by DNV Company and was issued ISO9001 Certificate. In 2001, the company became member of CWSA and metal seated / resilient seat butterfly valves have been as recommended products. In 2004, the company was named as Liaoning Provincial Reputation and Credit Company, in the same year, cooperated with Northeastern University , Casting and Welding New Technology Application Unit was established which apply the latest science technique into production. Also in 2004, the company became member of Cast Association of Liaoning Province.
The products have already been used in power plant, hydro power plant, nuclear plant, water supply and drainage projects, sewage treatment projects, gas, metallurgy, petrochemical and mine field. They are sold to USA , Europe, Japan , Middle East and Southeast Asia .