Forged Fitting
Forged Fittings are manufactured in accordance with ASME B16.11.Forged fittings are used for associating or connecting pipes, pumps, valves & other equipments to create a piping systems below size of 2 or 4 inches in diameter.
There are mainly two types of forged fittings called SOCKET-WELD FITTINGS which are connected to pipes by fillet welds and second one is THREADED FITTINGS in which the pipe is screwed onto the fittings.
The ASME B16.11, MSS SP 75, MSS SP 83, MSS SP 95 specifications cover forged fittings for both socket weld and threaded to fit ASME B36.10 and ASME B36.19 carbon, alloy, stainless steel and nickel-base alloy pipes of small bore size.
It is manufactured from solid blocks of steel, that are machined to obtain the final required shape within the tolerances set by the applicable specifications.
The class of the fitting represents the maximum allowed pressure that the device can withstand.
Class 3000 fittings are used for pipes in schedule 80/XS, Class 6000 for pipes in schedule 160, Class 9000 for pipes with larger wall thickness( XXS).
Forged Fittings joints are made by bolting together two forged Fittings with a gasket between them to provide a seal.
Stainless Steel | ASTM / ASME SA 182 F 304 / 304L / 304H / 316 / 316L / 316H / 309 / 309S / 310 / 310S / 317 , 317L , 321 , 321H , 347 , 347 H & 904L. |
Duplex Steel | ASTM / ASME SA 182 F 44 , F 45 , F51 , F 53 , F 55 , F 60 , F 61. |
Carbon Steel | ASTM / ASME A 105, ASTM / ASME A 350 LF 2. |
Alloy Steel | ASTM / ASME A 182 GR F 5, F 9 , F 11 , F 12 , F 22 , F 91. |
Nickel Alloy | 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 ). |
Copper Alloy | 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. |
Brass Forged Steel | Brass CA 360, CA 345 and CA 377 / SAE J530, SAE J531 and ASA |
ASTM A182 – ASME SA182 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
ASME B16.11 | Socket Welding and Threaded Forged Fittings |
MSS SP-95 | Swage(d) Nipples and Bull Plugs |
BS 3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |