Name: stainless steel flange, welded neck flange with American Standard, American Standard neck flat welding flange, loose flange welding (flanges), with convex and concave surface welded neck flange, with neck-welding method Lan, ring joint welded flange, raised face flange, reducing pipe flanges, welded flange, welded flange, socket welding flange, convex surface of the flange, loose flange welding neck collar, France blue cover, blind, blind, etc. 8 characters 
 Size: 1 / 2 "~ 240" 
 Pressure rating: 0.6Mpa ~ 32Mpa, 150Lb ~ 2500Lb, PN0.25-PN42.0 
 Material: 20 #, 304,304 L, 321,316,316 L, 310S, (UNS S31500) (3RE60), 
 (UNS S31803/S32205) (SAF2205), (UNS S32750) (SAF2507) and other materials 
 Common Standards: 
 GB: GB/T9112-2000 (GB9113 · 1-2000 ~ GB9123? 4-2000) 
 American Standard: ANSI B16.5 Class150, 300,600,900,1500 
 Japanese standard: JIS 5K, 10K, 16K, 20K 
 German standard: DIN2573, 2572,2631,2576,2632,2633,2543,2634,2545 
 Ministry of Chemical Industry Standard: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91, HG20592-97 Series, HG20615-97 Series 
 Ministry of Machinery standard: JB81-59 ~ JB86-59, JB/T79-94 ~ JB/T86-94, JB/T74-1994 
 Pressure Vessel: JB1157-82 ~ JB1160-82, JB4700-2000 ~ JB4707-2000 
 Applications: 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