SERVICES

Pipe Threading
Pipe Threading
Common pipe thread types:  
NPT or NPS (national pipe tapered or straight): Most common in North America 
MIP or FIP (male or female iron pipe): Same thread dimensions as NPT 
BSP(T) or BSP(S) (British standard pipe tapered or straight): Most common in Europe 
Compression: A unique threaded fitting that does not mate with other thread types
UNS (National Unified Special): Some compatible with compression fittings

 

NPT Thread Chart

NPT Nominal Size Actual OD Hand Tight Turns Wrench Turns
1/8 0.405" 4.5 2.5
1/4 0.54" 4 3
3/8 0.675" 4.5 3
1/2 0.84" 4.5 3
3/4 1.05" 4.5 3
1 1.32" 4.5 3.25
1 1/4 1.66" 4.5 3.25

BSP Thread Chart 

BSP Nominal Size Major Diameter (OD) Minor Diameter (ID)
1/8 0.38" 0.34
1/4 0.52" 0.45
3/8 0.65" 0.59
1/2 0.83" 0.73
3/4 1.04" 0.95
1 1.30" 1.19
1 1/4 1.65" 1.53


What are the parts of a pipe thread?
The thread dimension refers to the major diameter or outside measurement.  
The pitch is the distance from the peak of one crest to the opposite of another. 
The thread angle is the difference between the threads or the valley between the peaks.   

Know more about this product price, catalogue, mill test certificate,  please inquiry to: [email protected]

Contact

2008

Carbon steel pipe plant was established

2010

Square tube mill put into use

2013

Production base in Shandong & Tianji

2016

Coating equipment introduction

2019

Pipe fittings factory

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