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The tolerance of butt welding pipe fittings

The tolerance of butt welding pipe fittings

Hebei Haihao Group have more than 30 years production experience about the butt welding pipe fittings,forged pipe fittings,steel pipes,flanges products.A butt welding pipe fitting means a pipe fitting which has the connecting end for butt welding(bw).Our butt welding pipe fitting products as follows:

pipe elbows (45/90/180 degree elbow,long radius elbow,short radius elbow),
pipe tees (equal tee,reducing tee,lateral tee,barred tee,split tee),
hot induction bends (1.5D,2D,3D,5D,7D bend),
pipe reducers (concentric reducer,eccentric reducer),
pipe caps,paddles,stub ends,pipe crosses etc.

The butt welding pipe fittings commonly according to standard ANSI/ASME B16.9 and ANSI/ASME B16.28.To fulfill each requirement of customers and to meet with international specifications and dimensional standards, we follow stringent quality control.The butt welding pipe fitting tolerance within the scope of the following:

Butt welding pipe fitting general:

Cross-sectional tolerances for all butt welding pipe fittings (ASME/ANSI B16.9 and B16.28):

Alignment tolerances are concerned with the way that the ends of a fitting are cut. Exaggerated distortions are shown for clarity in the diagram below.


Alignment tolerances (ASME/ANSI B16.9 and B16.28):


Tolerances for Specific Fittings

Dimensional tolerances for elbows and returns (ASME/ANSI B16.9 and B16.28):


Dimensional tolerances for reducers, caps and stub ends (ASME/ANSI B16.9):


Hebei Haihao Group can supply the butt welding pipe fittings and butt welding flange as international standards and clients�?requirements. Our butt welding pipe fittings are used in various industry projects because of their advantages and high quality. Welcome to contact us for further information.