Our Production Standard Is:

1．ANSI
   ASTM ANSI B16.5, ASA, API-605, AWWA-c207, MSS-sp44
   Kind of flange: slip-on, welding neck, blind, threaded,
　 lap-joint, socket-welding etc.
   Class of pressure: Class 150,300,600,900,1500.
   Size:1/2"-----60"
2．DIN
   DIN2573,2572,2631,2576,2632,2633,2543,2544,2634,2545 etc.
   Kind of flange: plate, slip-on, welding neck, blind, threaded
　 etc.
   Size:1/2"-------36"
3．BS
   BS4504, PN16, PN25, PN40, BS10, TABLE E, BS10 TABLE D, etc.
   Kind of flange: plate, slip-on, welding neck, blind, threaded
　 etc. Size:1/2"-------36"
4．UNI
   UNI2276,2277,2278,6083,6084,6091,6092,6093,2281,2282,2283,
　 2284, 6089,6090,2253,2254
   Kind of flange: plate, slip-on, blind etc.
   Size:1/2"-------36"
5．JIS
   JIS 5K, 10K, 16K, 20K etc.
   Kind of flange: plate, slip-on, blind etc.
   Size: 1/2"------36"
6. We can also manufacture special application flanges and forging
　 parts(3m,5ton hereinafter) according to your drawing.