Forged Pipe Fittings
What are forged pipe fittings?
Forged pipe fittings are hot formed sections with different types for high pressure pipe fittings,they are made from the process of forging.The forged steel pipe fittings are mainly divided to two types in the connecting way: socket weld pipe fitting and threaded pipe fitting.
Forged pipe fittings normally attached to pipes to the end of pipes,fittings,or other objects to connect the piping systems with different methods of joining that is by screwed or socket weld.Forged pipe fittings are mainly used for small pipe sizes,commonly for piping whose nominal diameter less than 4 inch and they are available in pressure ratings: 2000lbs,3000lbs,6000lbs and 9000lbs.
Specification of forged pipe fittings:
Size range: 1/8″-4″(6mm-100mm)
Threaded pipe fittings: 2000 lbs, 3000 lbs and 6000 lbs (140kgs/cm2-210kgs/cm2-410kgs/cm2)( sch 40-sch 80-sch 160)
Socket weld pipe fittings: 3000 lbs,6000 lbs,9000 lbs.(sch 80-sch 160-xxs)
Types of forged pipe fittings:
Socket weld pipe fittings:
A socket weld pipe fitting is a pipe accessory in which a pipe is inserted into a recessed area of a fitting or flange for welding.
Comparing the butt welding pipe fittings,socket weld pipe fittings are mainly used for small pipe diameters,commonly for piping of diameter less than 4 inch.Socket welded joints construction is a good choice when high leakage integrity and great structural strength are important in the piping design .
Socket welding fatigue resistance is lower than the butt weld construction due to the use of fillet welds,but it is still better than most of the other mechanical joining methods.
Types of socket weld pipe fittings:
- Socket welding 45° elbow,socket welding 90° elbow,socket welding street elbow
- Socket welding tee,socket welding lateral tee
- Socket welding cross
- Socket welding cap
- socket welding reducer insert
- Socket welding full coupling,socket welding half coupling
- Socket welding union
- Socket welding boss
- Branch outlet,socket welding outlet(sockolet),elbow outlet(elbolet),lateral outlet(latrolet),nipple outlet(nipolet),etc.
Threaded pipe fittings:
Threaded joints are probably the oldest method of connecting piping systems.Like socket weld pipe fittings,threaded pipe fittings are mainly used for small size pipes,usually for piping with nominal diameter of NPS 2 or smaller.
Types of threaded pipe fittings:
- Threaded 45° elbow,threaded 90° elbow,threaded street elbow
- Threaded tee,45° lateral tee
- Threaded cross
- Threaded full coupling,threaded half coupling,reducing coupling
- Threaded pipe cap
- Hex head bushing
- Hex head plug,square head plug,round head plug,bull plug
- Threaded union
- Pipe nipple,hex nipple,swage nipple
- Threaded boss
- Branch outlet,threaded outlet(thredolet),elbow outlet(elbolet),lateral outlet(latrolet),nipple outlet(nipolet),etc.
Standards of forged steel pipe fittings:
ASME B16.11-Socket weld pipe fittings and threaded pipe fittings
MSS-SP-79-Socket welding reducer inserts
MSS-SP-83-Socket welding and threaded union
MSS-SP-95-Swage(d) nipples and bull plugs
MSS-SP-97-Reinforced forged branch outlet fittings-socket welding,threaded,and butt welding ends
BS3799-Specification for steel pipe fittings,screwed and socket-welding for the petroleum industry
Materials of forged steel pipe fittings:
carbon steel: ASTM A105,A350 LF2,etc.
stainless steel: ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51,etc.
alloy steel: ASTM A182 F1,F5,F9,F11,F22,F91,ASTM A694 F42,F46,F52,F56,F60,F65,F70,etc.
Hebei Haihao produces high quality forged steel pipe fittings and unions in different standards,available in all classes and material grades for different applications.Our factory has complete lines of forging and advanced equipments.Backed by the most comprehensive product line in the industry and an extensive inventory that makes all our products readily available,Haihao Group has enough experience for the power, oil, chemical,marine and construction industries all over the world.Email:email@example.com