Shijiazhuang Bang dong Pipeline Technology Co,Ltd.
Model No.: P-NPT Threaded and Socket Welding Fittings
Material: Carbon Steel
Shape: Equal Tee
Head Code: Round
Wall Thickness: XS
Finish: Black Painting
Pressure Rating: 3000LBS
Certification: ISO, API, CE
Packaging: Wooden Cases
Place of Origin: Cangzhou,China
Supply Ability: 1000pcs/month
HS Code: 73079900
Port: Tianjin New Port,Beijing Air Port,Zhengzhou Train Station
NPT Threaded and Socket Welding Fittings ANSI Standard 3000lbs
Bangdong Supply ASME B16.11 Threaded Fittings,Socket Weld and Threaded Fittings,Forged High Pressure Pipe Fittings.Threaded joints probably represent the oldest method of joining piping systems. Like Socket Weld fittings, threaded fittings are mainly used for small pipe diameters (Small Bore Piping); generally for piping whose nominal diameter is NPS 2 or smaller.
The dimensional standards for taper pipe threads are given in ASME B1.20.1. That document gives all required dimensions including number of threads per inch, pitch diameter, and normal engagement lengths for all pipe diameters.
Threaded piping is commonly used in low-cost, noncritical applications such as domestic water, fire protection, and industrial cooling water systems.
Threaded fittings are normally made of cast gray or malleable iron, cast brass or bronze, or forged alloy and carbon steel.
They are available in three pressure ratings: Class 2000, 3000 and 6000.
All fittings on this page are described, are provided with NPT thread, ASME B1.20.1. The American National Pipe Thread Tapered, is the best known and most widely used connection where the pipe thread provides both the mechanical joint and the hydraulic seal. NPT has a tapered male and female thread
Advantages and Disadvantages of Threaded Fittings
Installation productivity is moderately high, and specialized installation skill requirements are not extensive.
Leakage integrity is good for low-pressure, low-temperature installations where vibration is not encountered.
Rapid temperature changes may lead to leaks due to differential thermal expansion between the pipe and fittings.
Vibration can result in fatigue failures of screwed pipe joints due to the high stress intensification effects caused by the sharp notches at the base of the threads.
In hazardous piping systems threaded connections should be avoided, if possible. Their vulnerability to fatigue damage is significant, especially where exposed threads are subject to corrosion.
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