Butt Weld Steel Fitting are available as elbows, tees, caps, reduces and crosses. These fittings are the most common type of welded pipe fitting and are specified by nominal pipe size and pipe schedule. Butt Weld Steel Fittings use seamless or welded steel pipe as the starting material and are formed (through multiple processes) to get the shape of elbows, tees and reducers etc. and they have many inherent advantages over other forms.

• Welding a fitting to the pipe means that it is permanently leak-proof.

• The continuous metal structure formed between pipe and fitting adds strength to the system.

• Smooth inner surface and gradual direction changes reduce pressure losses and turbulence and minimize the action of corrosion and erosion.

• A welded system utilizes a minimum of space.

Reference Standard of Butt Weld Steel Fitting

ASME SERIES	ASME B16.9
ASTM SERIES	ASTM A403/ASTM A815
AWWA SERIES	AWWA C208
BS SERIES	BS534/BS4825
DIN SERIES	DIN2460/DIN2605/DIN2615/DIN2616/DIN2617/DIN2873
EN SERIES	EN10224/EN10253/EN10311
ISO SERIES	ISO5251
MSS SERIES	MSS SP-43/MSS SP-75
JIS SERIES	JIS B2311/JIS B2312/JIS B2313

Size Range of Butt Weld Steel Fitting

Outer Diameter (DN/NPS)	15-3600 (1/2"-144")
Wall Thickness (mm)	SCH5S-SCH160S

Steel Grade of Butt Weld Steel Fitting

ASTM A234	WPB/ WPC/ WP11 CL1/ WP11 CL2/ WP11 CL3/ WP12 CL1/ WP12 CL2/ WP22 CL1/ WP22 CL3/ WP22 CL3/ WP5 CL1/ WP CL3/ WP91/ WP911/ WP92
ASTM A420	WPL6/WPL3/WPL8
ASTM A860	WPHY42/ WPHY46/ WPHY52/ WPHY60/ WPHY65/ WPHY70
MSS SP-75	WPHY42/ WPHY46/ WPHY52/ WPHY56/ WPHY60/ WPHY65/ WPHY70/ WPHY80
ASTM A105	A105
ASTM A182	F11 CL1/ F11 CL2/ F11 CL3/ F12 CL1/ F12 CL2/ F22 CL1/ F22 CL3/ F5/ F9/ F91/ F911/ F92
ASTM A350	LF2 CL1/ LF3 CL1
ASTM A403	WP304/ WP304L/ WP304H/ WP316/ WP316L/ WP316H/ WP321/ WP321H/ WP347/ WP347H/ WP310S
ASTM A815	WPS31803/ WPS32205/ WPS32750/ WPS32760
ASTM A182	F304/ F304L/ F304H/ F316/ F316L/ F321/ F321H/ F347/ F310H/ F51/ F60/ F53/ F55
EN	P175TR1/ P195TR2/ P235TR1/ P235TR2/ P265TR1/ P265TR2/ P235GH/ P265GH/ S235JR/ S275J0/ S275J2
DIN	1.4301/ 1.4306/ 1.440/ 1.4435/ 1.4571/ 1.4436/ 1.4438/ 1.4541
JIS	SUS304/ SUS304L/ SUS316/ SUS316L/ SUS316Ti/ SUS317L/ SUS321/ SUS321H

Category of Butt Weld Steel Fitting

Product Name	Type
45° Elbow (Bend)	Long Radius		3D
90° Elbow (Bend)	Long Radius	Short Radius	3D
180° Elbow (Return)	Long Radius	Short Radius
Tee	Equal	Reducing	45°Lateral
Cross	Equal	Reducing
Reducer	Concentric	Eccentric
Stub End	Long	Short
Pipe Cap

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