We profinessional flange.Also we have the certification of ISO90001

The flange as standard as 

     ANSI B16.5 ;ANSI B16.47 MSS(A);ANSI B16.36 ANSI B16.47  API 605

     Blid flange API 590(spectacle,paddle blank,paddle spacer),

     Paddle flange nClass150,300,600,900,1500,2500

     API 6A,,6B,6BX Class 2 000,3 000,5 000,10 000,15 000,20 000(SO,WN,BL)

     high neck ANSI LONG WELDING NECKS FLANGES TYPE (LWN,HB,F)

     Class150,300,600,900,1500,2500

    JIS 5K,10K,16K,20K(PL,SO,BL)
 

    DIN2573,2572,2631,2576,2632,26332543,2634,2545(PL,SO,WN,BL,TH)

    BS4504 ,BS10,BS3293; ISO7005-1;UNI,AS 2129flange

    HG20592-97(HG20593-97~HG20614-97)

    HG20615-97(HG20616-97~HG20635-97)

    HG5010-52~HG5028-58,HGJ44-91~HGJ65-91 JB81-59~JB86-59,JB/T79-94~JB/T86-94

    GB9112-88(GB9113?1-88~GB9123?36-88)

   JB4701-2000,JB4702-2000’JB4703-2000