shanghai kefeng was established in shanghai, china in 2003. it integrates material manufacturing and processing. it is a leading supplier of valve accessories and alloy material solutions. it specializes in the production and processing of ball valves, valve seats, valve stems, centrifugal casting alloy pipe fittings and seat rings of various materials, with an annual output of more than 3000 tons, it is a well-known manufacturer of valve fittings made of corrosion-resistant and high temperature resistant alloy materials in china.kefeng is a professional valve parts processing factory, which can produce and process parts according to customer drawing requirements and carry out high-precision dimensional inspection. the factory takes ball valve accessories as the main products, and is equipped with professional cnc lathes, machining centers, cnc grinders, professional ball mills, valve stem machines, valve seat grinders and other high-performance equipment, which can manufacture and process floating balls of 1 / 2 inch to 12 inch specifications, fixed balls of 1 / 2 inch to 24 inch specifications, tee balls, l-shaped balls, t-shaped balls, v-shaped balls, long handle balls and hard sealed balls, valve seat, valve stem and other accessories. in addition, kefeng has rich experience in processing high alloy products, and can avoid sticking and scrap caused by large cutting force and high cutting temperature. meanwhile, kefeng is equipped with three coordinate detector and sphere roundness measuring instrument, which can ensure the highest standard drawing size requirements.kefeng is also a professional manufacturer of stainless steel and alloy forgings and castings. it can provide customers with stainless steel and corrosion-resistant and high temperature resistant alloy products in accordance with astm, din, en, nace, api, gb, jis and other domestic and foreign standards. the materials mainly include austenitic stainless steel, super austenitic stainless steel, duplex steel, nickel base alloy and precipitation hardening stainless steel, cobalt based alloys and copper alloys. kefeng has rich experience in heat treatment and material inspection. the factory is equipped with many heat treatment equipment. professional heat treatment technology ensures the quality of kefeng products in the raw material stage; at the same time, the factory is equipped with alloy spectrum analyzer, universal material testing machine, low-temperature impact testing machine, hardness tester, 1000 times optical microscope, corrosion-resistant testing instruments and a variety of nondestructive testing instruments imported from the united states and germany.at the beginning of its establishment, kefeng was a manufacturer of corrosion-resistant and high-temperature alloy materials, committed to studying the forming process of stainless steel and alloy materials. in 2008, kefeng officially transformed into a manufacturer of valve accessories and pipe fittings. in 2014, the company introduced erp system for scientific management of the enterprise. over the years, kefeng's solemn commitment to quality and delivery date has made kefeng's products and services well fed back and recognized by customers. the products are exported to home and abroad and are widely used in oil and gas, power engineering, seawater desalination, chemical industry, papermaking and other industries.kefeng is committed to becoming a partner of the world's leading fluid control manufacturer, taking customers' improvement of product quality, fast and convenient after-sales service as the core concept of the enterprise, and following the factory management concept of health, safety and environmental protection, kefeng will make every effort to meet customers' needs and aspire to become a century old enterprise in the industry.