GOST 12821 PN4.0 Weld neck flanges

　　These flat face steel blind flanges are used to blank off pipelines, valves and pumps, it can also be used as an inspection cover. Blind flange is sometimes referred to as a blanking flange. Experienced professionals are engaged with us who fabricate these flanges with excellent precision. We are recognized blind flanges manufacturer.

　　Stainless Steel

　　ASTM A 182, A 240

　　Grade

　　F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750

　　Carbon Steel

　　ASTM A 105, ASTM A 181

　　Alloy Steel

　　ASTM A 182, GR F1, F11, F22, F5, F9, F91

　　Nickel Alloys

　　Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276

　　Copper Alloys

　　Copper, Brass & Gunmetal

　　Size

　　1/8" NB TO 48"NB.

　　Class

　　150#, 300#,400 #,600#,900#, 1500# & 2500 #.

　　Standard

　　ANSI

　　ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

　　DIN

　　DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673

　　B.S

　　BS4504 , BS4504, BS1560, BS10

　　.

　　We have adopted advanced production equipment and technologies to manufacture our blind flanges weld neck socket flanges slinp on flanges and threaded flanges, which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.