Wenzhou Hengsheng valve Co.,Ltd.is a high-tech enterprise integrative with research、manufacturing and distribution.And is specialized in production of various forged steel、API high and middle pressure valve.With strong science technology,andadvanced equipment.Have NC lathe processing center、high efficiency and precision composing machine、test equipment and so on.Ourcompany has passed ISO9001 and strictly execute ANS、IAPI、DIN、BS、JPI、JIS、GB international advanced standards.Pressure grade:150Lb-2500Lb(0.1MPa-42.0MPa).Nominal Diamerter:1/2''-2''(DN15-50mm).Main Material:A105、LF2、F5、F11、F22、304、316、316L.