Hangzhou Kaiwei Valve Group Co., Ltd., founded in 2015, is a modern industrial enterprise integrating R&D, design, casting, production and sales, providing fluid‑control products and supporting services for customers.

The factory occupies 58 acres with a total investment of 100 million RMB. The technical team consists of 56 personnel, including 15 senior engineers and 20 engineers. The workshop is equipped with over 150 sets of processing equipment including CNC machine tools, multi‑axis machining centers, various lathes and imported automatic welding machines. Testing facilities cover material spectrometers, tensile testers, hardness testers, ultrasonic flaw detectors, thickness gauges, metal‑film analyzers, together with a physical‑chemical analysis laboratory. The company has obtained ISO9001 quality management system certification, environmental & occupational health system certification, API certification, CCS (China Classification Society) certification, European PFD certification, DNV certification, SIL‑3, TALUFF and TS‑A1 certifications.

Kaiwei valves are widely applied in oil, natural gas, metallurgy, power plant, pharmaceutical and petrochemical industries. Product range includes 1‑PC cast‑steel floating ball valves; 2‑PC / 3‑PC cast‑steel & forged‑steel floating ball valves and trunnion‑mounted ball valves; hard‑seal ball valves; fully‑welded ball valves; top‑entry ball valves; cryogenic valves; ceramic valves; three‑way ball valves, butterfly valves, gate valves and globe valves. Most cast and forged valves are manufactured in accordance with API standards, covering main categories of 518 series. Available materials contain carbon steel, stainless steel, duplex stainless steel, alloy steel, as well as special materials such as Inconel625, Monel, Alloy 20 and titanium. Valve sizes range from 1/2" to 56", pressure class from 150LB to 2500LB. Multiple connection forms and actuators are selectable for diverse project requirements.

Kaiwei Valve implements full‑process supply‑chain management from raw‑material incoming to finished goods delivery. A complete quality assurance system and standardized management rules aligned with international practices have been established, covering 6S management, ERP system, logistics, warehousing, procurement, finance, quality specifications, staff codes and occupational health & safety, to deliver standardized valve products on schedule.