Ashkar Group Of Companies


ASME B16.9 is the standard for factory-made wrought butt-welding pipe fittings in sizes 1/2" through 48". Generally speaking, butt-welding pipe fittings are fabricated pieces of pipe that are used either to make changes of direction(elbow&return), close the pipeline end(end caps), branch from the main pipe(tee), or make a reduction in line size(reducer). They can be made from seamless pipes, welded pipes or plates.


The standard for butt welding pipe fittings as below:

ASME(ANSI) Standards 

B16.9    Factory-Made Wrought Steel Butt-Welding Fittings

B16.28   Wrought Steel Butt-Welding Short Radius Elbows and Returns

B16.25   Butt Welding Ends

B36.10   Welded and Seamless Wrought Steel Pipe

B36.19   Stainless Steel Pipe 


ASTM Standards 

A105    Standard Specification for Carbon Steel Forgings for Piping Applications

A234    Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

A403    Wrought Austenitic Stainless Steel Piping Fittings

A420    Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low Temperature Service

A815    Wrought Ferric, Ferric/Austenitic, and Martensitic Stainless Steel Piping Fittings

MSS Standards

SP-43    Wrought Stainless Steel Butt-Welding Fittings

SP-75    High Test Wrought Butt-Welding Fittings

SP-79    Socket Welding Reducer Inserts

SP-87    Factory-Made Butt-Welding Fittings for Class I Unclear Piping Applications

JIS/KS Standards

JIS B2311/KS B1522    Steel Butt-Welding Pipe Fittings for Ordinary Use

JIS B2312/KS B1541    Steel Butt-Welding Pipe Fittings

JIS B2313/KS B1543    Steel Plate Butt-Welding Pipe Fittings

JIS B2220    Steel Welding Pipe Flanges

DIN Standards

2605-1    Steel Butt-Welding Pipe Fittings; Elbows and Bends with Reduced Pressure Factor

2609        Steel Butt-Welding Pipe Fittings; Technical Delivery Conditions 

2615-1    Steel Butt-Welding Pipe Fittings; Tees with Reduced Pressure Factor 

2615-2    Steel Butt-Welding Pipe Fittings; Tees for Use at Full Service Factor

2616-1    Steel Butt-Welding Pipe Fittings; Eccentric Reducers with Reduced Pressure Factor

2616-2    Steel Butt-Welding Pipe Fittings; Reducers for Use at Full Service Pressure Factor

2617        Steel Butt-Welding Pipe Fittings; Caps

BS Standards

BS1965   Steel Butt-Welding Pipe Fittings

BS4504   Circular Flanges for Pipes, Valves and Fittings

EN Standards

10253-1   Butt-Welding Pipe Fittings; Wrought Carbon Steel for General Use and Without Specific Inspection Requirements