English | português | русский| Español

Our company

hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


Read More About Haihao Group

What are ASME B16.11 threaded pipe fittings?

ASME B16.11 threaded pipe fittings are the pipe fittings according to standard ASME B16.11,ASME B16.11 is the most commonly used standard for threaded pipe fittings.Threaded pipe fittings are probably the earliest type of piping system connection,similar to socket welded fittings.Threaded pipe fittings are commonly used for small diameter pipes with nominal diameter DN50 and below.The dimensions of spinal thread are specified in ASME B1.20.1.Dimensions such as inch teeth,pitch diameter and screwing length of pipe threads.

ASME B16.11 A182 F316 90 degree threaded elbows

ASME B16.11 A182 F316 90 degree threaded elbows

Threaded pipe fittings usually include gray cast iron or malleable cast iron,cast brass or bronze,wrought alloy or carbon steel.The threaded fittings specified in ASME B16.11 consist of three classes of pressure: Class2000, 3000 and 6000.Threaded fittings are usually used in low cost,non-harsh working conditions.For example:domestic water,fire pipes and industrial cooling systems.

The NPT thread:

The threaded fittings in ASME B16.11 standard use NPT threads,that is, the spinal canal threads in ASME B1.20.1, which are the most commonly used threads for mechanical connections and hydraulic seals. NPT internal and external threads are tapered and sealed with PTFE or sealant.

ASME B16.11 threaded equal tees

ASME B16.11 threaded equal tees

Types of ASME B16.11 threaded pipe fittings by class and size

Description Class Designation
Elbows 45 and 90 degrees
Tees, Crosses, Coupling
Half-Coupling, Cap
2000 3000 6000
1/8-4 1/8-4 1/8-4
1/8-4 1/8-4 1/8-4
~ 1/8-4 1/8-4
~ 1/8-4 1/8-4
Street elbow 1/8-2 1/8-2
Square,hex,round plug and flush bushing 1/8-4(1)
Pipe Wall SCH 80 / XS SCH 160 XXS

Notes: Plug and bushings are not identified by class designation.They may be used for ratings up to Class 600 designation.

Hebei Haihao Group can produce all kinds of ASME B16.11 threaded pipe fittings,such as elbow 45 degree and 90 degree,tee,cross,coupling,cap,swage nipple and so on,material including carbon steel(ASTM A105,A350 LF2,SS400,P235GH,P250GH,C22.8,Q235,20#,16Mn etc),stainless steel(ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51 etc) and alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70,A182 F5,F9,F91,F12,F11,F22 etc).which are well praised by customers.If you need further information,please contact us.

<< Back to Company News

Haihao Group Twitter haihao group youtube haihao group facebook haihao group linkedin