Zhejiang Hengtong Valve Co., Ltd.

Zhejiang Hengtong Valve Co., Ltd., founded in 2008 in Sanjiang Street, Yongjia County, Wenzhou, is a specialized enterprise integrating the development, production and sales of ball valve products and critical valve components. The company operates a 20,000 square meter plant with more than 170 employees and some 150 advanced machining units, applying assembly-line production and fine quality control.

Its product scope covers floating, trunnion-mounted, three-way and lever-operated balls, soft and hard sealed balls, seats, bodies, covers and stems, with ball sizes from 0.5 to 64 inches and pressure classes from 150 to 2500 LB. Materials include A105, LF2, 42CrMo, F6a, F304L, F316L, F51, F53, F55, Inconel 625, Inconel 718 and Incoloy 825, with coatings such as hard chrome, tungsten carbide and stellite. Certified to ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018, Hengtong received the 2022 Yongjia County Governor Quality Award and runs a 56-inch integrated lathe and grinding line achieving 0.02 mm coaxiality and Ra 0.4 surface finish on ball stems of 28 inches and above.