Carbon steel head size standard GB American Standard British standard and non-standard products. Buy steel-diameter pipe on the Tube Co., Ltd. Hebei Chiho. Ministry of standard GD0506 ~ 0507 Pressure Vessel supporting flange, tube sheet corresponding standards: JB / T4700 ~ 4707-2000 implementation of national standards (GB / T9112-2000) alloy diameter pipe, machinery of the standard (JB / T81-1959 forging alloying diameter pipe, JB / T74-1994) diameter alloy tube processing, petrochemical unit standard (SH3406-1996), marine standards GB / T10752-1999, Ministry of Chemical Industry Standard (HG / T5010-1958, HG / T20592-2009 ) and so on. Forged flange material exports ASTMA105 meet US standards. These are the national standard steel pipe diameter. Hebei Chiho Pipe; stainless steel alloy reducer several sub-diameter pipe, stainless steel pipe and stainless steel eccentric reducer concentric reducer diameter stainless steel tube is a tube for connection of two different diameters. Stainless steel reducers several points, with stainless steel and stainless steel eccentric reducer concentric reducer, which are also used in two different diameters connectivity standard stainless steel reducer pipe: GB American Standard British standard as well as various Non-standard high-pressure stamping alloy diameter pipe production | Hebei Chiho (certified) | alloy reducer by Chiho Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) Hebei Cangzhou, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Hebei Chiho leadership with the staff warmly welcome all inquiries negotiations to create the Hebei Chiho better future.