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  ◆ Japanese standard：JIS B2238、 JIS B2220、 JIS B2290、
        JIS B2291、JIS B7805、JIS B3451； JPI-7S-15-2005

  ◆ American Standard：ANSI B16.5

  ◆ Australia Standard：AS2129

  ◆ Germen Standard：DIN2576,DIN2573…

  ◆ British Standard：BS4504.

  ◆ European standard：EN1092

  ◆ Danish standard：DIN 86044 STEEL FLANGE PN16

◆ We can also processing according to drawings or samples from
        customers.