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.
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.
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.