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Flanges
A means of connection between to pipes with help of nut, bolt, and washer & gasket is called as flange. The gasket is applied to avoid any kind of leakage. A flange varies in size from ½" nb to 48� NB & in class 150# to 1500#. Flanges can be made for forging or plates. A forging grade are ASTM A 182 (for S.S) & ASTM A 105 (for C.S) with hub & weld neck. Plate made flanges are generally without hub & weld neck. The flanges are slip-on raised face (sorf), slip-on raised flat face (soff), weld neck raised face (wnrf), tongue & groove, spectacle blind, and blind raised face (blrf).
M.O.C GENERALLY USED:
SS 304/ 304L/ 316/ 316L/ 321/ 310/ / DUPLEX/ HAST ALLOY C-276/ ALLOY 20/ INCONEL/ MONEL/ C.S/M.S & A.S.
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Carbon & Alloy Steel
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Range
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15 NB UP TO 600 NB IN 150 LBS , 300 LBS, 400 LBS , 600 LBS , 900 LBS , 1500 LBS , 2500 LBS / TABLE 2.5 , TABLE 6 , TABLE 10, TABLE 16,TABLE 25 , TABLE 40, TABLE 64, TABLE 160, TABLE 320, TABLE 400
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Form
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SLIP ON , SOCKET WELD , BLIND , LAPPED , SCREWED , WELD NECK , REDUCING , SPECTACLE ,SLIP ON BOSS , PLATE , PLATE BLANK , SCREWED BOSS.
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Carbon Steel
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ASTM / ASME A 105.
ASTM / ASME A 350 LF 2 .
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Alloy Steel
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ASTM / ASME A 182 GR F 5, F 9 , F 11 , F 12 , F 22 , F 91.
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Stainless & Duplex Steel
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Range
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15 NB UP TO 600 NB IN 150 LBS , 300 LBS, 400 LBS , 600 LBS , 900 LBS , 1500 LBS , 2500 LBS / TABLE 2.5 , TABLE 6 , TABLE 10, TABLE 16,TABLE 25 , TABLE 40, TABLE 64, TABLE 160, TABLE 320, TABLE 400
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Form
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SLIP ON , SOCKET WELD , BLIND , LAPPED , SCREWED , WELD NECK , REDUCING , SPECTACLE ,SLIP ON BOSS , PLATE , PLATE BLANK , SCREWED BOSS.
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Stainless Steel
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ASTM / ASME SA 182 F 304 , 304L , 304H, 309H, 310H , 316 , 316H , 316L , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H
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Duplex Steel
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ASTM / ASME SA 182 F 44 , F 45 , F51 , F 53 , F 55 , F 60 , F 61.
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Nickel & Copper Alloy
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Range
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15 NB UP TO 600 NB IN 150 LBS , 300 LBS, 400 LBS , 600 LBS , 900 LBS , 1500 LBS , 2500 LBS / TABLE 2.5 , TABLE 6 , TABLE 10, TABLE 16,TABLE 25 , TABLE 40, TABLE 64, TABLE 160, TABLE 320, TABLE 400
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Form
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SLIP ON , SOCKET WELD , BLIND , LAPPED , SCREWED , WELD NECK , REDUCING , SPECTACLE ,SLIP ON BOSS , PLATE , PLATE BLANK , SCREWED BOSS.
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Nickel Alloy
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ASTM / ASME SB 564 UNS 2200 ( NICKEL 200 ) , UNS 4400 (MONEL 400 ) , , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 ( INCONEL 601 ) , UNS 6625 (INCONEL 625) , UNS 10276 ( HASTELLOY C 276 )
ASTM / ASME SB 160 UNS 2201 (NICKEL 201 )
ASTM / ASME SB 472 UNS 8020 ( ALLOY 20 / 20 CB 3 )
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Copper Alloy
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ASTM / ASME SB 61 UNS NO. C 92200 & ASTM / ASME SB 62 UNS NO. C 83600.
ASTM / ASME SB 151 UNS NO. 70600 , 71500 , C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)
ASTM / ASME SB 152 UNS NO C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200.
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