Socket welding flanges are the flanges that inserted into the flange ring ladder at the end of the pipe and welded at the end and outside of the pipe. There are two kinds, with and without neck. The neck pipe flange has good rigidity, small welding deformation and good sealing property. It can be used in the case of pressure 1.0~10.0MPa. Container type B flange is also a socket welding flange for high sealing requirements. In design, socket welding flange can be checked according to integral flange.
Grade: DN25-DN100, 1 "-4"
Body material: SUS 304, SUS 316L
Form of connection: welding, clamps, threads
Sealing ring material: EPDM, FPM, SI
Surface treatment: Ra ≤ 0. 8 μ m
Seal form: Protruded (RF), concave and convex (MFM), tenon groove (TG), ring connection (RJ)
Material: Carbon Steel: ASTM A105C20 #Con Q235C16Mn, ASTM A350 LF1, LF2
CL1/CL2、LF3CL1/CL2、ASTM A 694 F42、F46、F48、F50、F52、F56、F60、F65、F70;
Stainless steel: ASTM A182 F304304L, F316316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8
Alloy steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91A182F12, A182F111 / 16MnRU Cr5MoO12 Cr1MoVN 15CrMoO12 Cr2Mo1 A335P22 A335P22 A45.8 / Ⅲ
Manufacturing standards: ISO, IDF, DIN, 3A, SMS ANSI B16.5, HG20619-1997, GB/T9117.1-2000-GB/T9117.4-200, HG20597-1997
Production process: Professional integral forging, forging manufacturing, etc.
Mode of processing: High precision NC lathe turning, common lathe finishing, argon arc welding and so on.
Application range of steel pipe flanges in European system
Sealing surface form | nominal pressure PN/MPa (bar) | ||||
1.0 (10) | 1.6 (16) | 2.5 (25) | 4.0 (40) | 6.3 (63) | 10.0 (100) |
Facet (RF) | DN10-50 | ||||
Concave and convex (MFM) | |||||
Mortise surface (TG) |
Application range of Steel Pipe Flange of American system
Sealing surface form | nominal pressure PN(MPa) (Class) | |||
2.0 Class 150 | 5.0 Class 300 | 11.0 Class 600 | 15.0 Class 900 | 26.0 Class 1500 |
Facet (RF) | DN 15-80 (1/2''-3'') | DN15-80 (1/2''-2.1/2'') | ||
Concave and convex (MFM) | - | DN15-80 (1/2''-3'') | ||
Mortise surface (TG) | ||||
Ring connection surface (RJ) | DN25-80 (1''-3'') |
Socket welding flanges is widely used in boiler pressure vessel, petroleum, chemical industry, shipbuilding, pharmaceutical, metallurgy, machinery, stamping bend food, etc, usually used in the pipe with PN ≤ 10.0MPA / DN ≤ 40.
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