CHENGGAO.CHENGGAO is a company established in Wenzhou, Zhejiang in 2005 that specializes in the research, development, and production of large-scale valves. It operates two production facilities with a combined total area exceeding 20,000 square meters. The company’s flagship products are a full range of ball valves, including various types such as ANSI-compliant, fully welded, floating, fixed, and metal-to-metal hard-seal models. These products comply with major international standards such as GB, API, and ANSI, and the company can also customize non-standard products according to specific requirements. The product range covers a wide variety of specifications, with nominal diameters ranging from DN15 to DN1200 and a broad pressure and temperature range (maximum pressure of 42.0 MPa and temperatures from -196°C to 570°C). Materials used include carbon steel, low-temperature steel, stainless steel, and duplex steel. The company is equipped with a full suite of advanced production and testing equipment, ranging from precision casting and CNC machining to large-scale comprehensive performance testing, and has obtained numerous authoritative domestic and international certifications, including ISO 9001, TS, API, and CE. The products are widely used in numerous industries such as power generation, oil and gas, chemicals, and municipal utilities, and are exported to many countries and regions worldwide.
