Name: carbon steel flange, forged flange, stainless steel flange, weld neck flange with American Standard, American Standard neck flat welding flange, loose flange welding (flanges), with a neck butt concave surface of the flange, with neck flat welding flange, ring joint welded flange, raised face flange, reducing pipe flanges, welded flange, welded flange, socket welding flange, convex surface flange , Butt Ring Loose flange, flange cover, blind, blind, etc. 8th Size: 1 / 2 "~ 80" (10-2000) Pressure rating: 0.6Mpa ~ 32Mpa, 150Lb ~ 2500Lb, PN0.25 -PN42.0 Material: 20 #, 304,304 L, 321,316,316 L, 310S, and other materials commonly used standard:: GB/T9112-2000 (GB9113 · 1-2000 ~ GB9123 ? 4-2000) American standard: ANSI B16.5 Class150, 300,600,900,1500 (WN, SO, BL, TH, LJ, SW) Japanese standard: JIS 5K, 10K, 16K, 20K (PL, SO, BL, WN, TH, SW) German standard: DIN2573, 2572,2631,2576,2632,2633,2543,2634,2545 (PL, SO, WN, BL, TH) Ministry of Chemical Industry Standard: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91 , HG20592-97 Series, HG20615-97 series of Ministry of Machinery Standard: JB81-59 ~ JB86-59, JB/T79-94 ~ JB/T86-94, JB/T74-1994 pressure vessel standard: JB1157-82 ~ JB1160-82 , JB4700-2000 ~ JB4707-2000 Application: boiler and pressure vessel, petroleum, chemicals, shipbuilding, pharmaceutical, metallurgy, machinery, food industry quality management: ISO9001: 2000 quality management system certification 
 Note: You can customize all kinds of material non-standard flange