Established in 2003 in Shanghai, China, Shanghai Kefeng is a leading supplier of valve components and alloy material solutions. We specialize in the production and precision machining of ball valves, valve seats, valve stems, centrifugal-cast alloy fittings, seat rings, and more, with an annual output exceeding 3,000 tons. Kefeng is recognized nationwide as a trusted manufacturer of valve components made from corrosion-resistant and high-temperature alloys.

Kefeng operates as a dedicated processing facility for valve and alloy components, capable of manufacturing parts according to customer drawings and conducting high-precision dimensional inspections. The company is equipped with advanced CNC lathes, machining centers, CNC grinders, ball grinders, and other high-performance equipment. We can produce floating balls (1/2”–12”), trunnion balls (1/2”–24”), as well as tee, L-type, T-type, V-type, long-stem, and hard-seal balls, along with valve seats, stems, bodies, bonnets, and pipe fittings. With extensive expertise in high-alloy machining, Kefeng effectively addresses challenges such as tool adhesion, excessive cutting forces, and high cutting temperatures, ensuring efficiency and reduced scrap rates. Our quality assurance is supported by advanced testing instruments, including coordinate measuring machines (CMM), spherical roundness testers, surface finish testers, and projection angle measurement systems, guaranteeing compliance with stringent dimensional tolerances.

Kefeng is also a professional manufacturer of stainless steel and alloy forgings and castings, supplying products that meet both domestic and international standards, including ASTM, DIN, EN, NACE, API, GB, and JIS. Our material portfolio covers austenitic stainless steels, super austenitic stainless steels, duplex stainless steels, nickel-based alloys, precipitation-hardening stainless steels, cobalt-based alloys, and copper alloys. With extensive experience in heat treatment and metallurgical testing, Kefeng is equipped with a wide range of heat treatment facilities, ensuring material reliability from the raw stage onward. In addition, our factory houses advanced testing equipment, such as alloy spectrometers, universal testing machines, low-temperature impact testers, hardness testers, 1000× optical microscopes, corrosion resistance testing systems, and a suite of nondestructive testing instruments imported from the United States and Germany.