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GB Flange

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PIC-(GB Flange)
  GB Flange

  GB Flange, referring to the flange of the material and workmanship are in line with national standards. National standard flanges refers to the People's Republic of China national standard "GB / T 9112 ~ 9124-2010 steel pipe flange," the provisions of the production of the flange film. We also use HG20592. (Ministry of Chemical Industry standards)

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