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[3] BUTTWELD
Specifications
AAP stocks Buttweld made from high quality carbon alloy steel to ASTM A234 which can be used in various piping systems.
The advantages of Buttweld include:
• Welding a fitting to the pipe means it is permanently leak proof.
• The continuous metal structure formed between pipe and fitting adds strength to the system.
• Smoother inner surface and gradual direction changes reduce the pressure losses and turbulence and minimises the action
of corrosion and abrasion.
• A welded system utilises a minimum of space.
Buttweld Specifications Standard Weight (Std)
Dimensional Tolerance
Buttweld STD ASTM A234 WPB ANSI B16.9 Dimensional Tolerance
ALL FITTINGS
90º & 45º
ELBOWS
TEES
REDUCERS
CAPS
NOMINAL
PIPE SIZE
(NPS)
OUTSIDE
DIAMETER
AT BEVEL
INSIDE
DIAMETER
AT END
WALL
THICKNESS
CENTRE
TO END
CENTRE
TO END
OVERALL
LENGTH
OVERALL
LENGTH
1/2” - 2 1/2”
+ 1.5MM
- 0.7MM
+0.8MM
- 0.8MM
NOT
LESS THAN
87.50% OF
NOMINAL
WALL
THICKNESS
+2.0MM
- 2.0MM
+2.0MM
- 2.0MM
+2.0MM
- 2.0MM
+ 3.0MM
- 3.0MM
3” - 4”
+ 1.6MM
- 1.6MM
+1.5MM
- 1.5MM
5” - 8”
+2.4MM
- 1.6MM
+6.3MM
- 6.3MM
10” - 18”
+4.0MM
- 3.2MM
+3.2MM
- 3.2MM
20”- 24”
+6.4MM
- 4.8MM
+4.8MM
- 4.8MM
Q
Q
P
Off Angle
Off Plane
Q
P
ff Angle
Off Plane
Angularity
NOMINAL PIPE
SIZE (NPS)
OFF ANGLE (Q)
OFF PLANE (P)
1/2 TO 2 1/2
1.0MM
2.0MM
3 TO 3 1/2
2.0MM
4.0MM
4
3.0MM
5.0MM
5 - 8
3.0MM
6.0MM
10 - 18
4.0MM
10.0MM
20 - 24
5.0MM
10.0MM
