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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.
Dimensional Tolerance
Off Angle
Off Plane
Welding end Preparation Selection
Sketch A
30° Max
T=22
37.5°±2.5°
1.60 ±0.8
1 Max
Sketch B
10°±1°
37.5°±2.5° 1.60 ±0.8
[3] BUTTWELD
Material Specifications
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Reference: Washington State University
