In the behavior, we make beveling after shot blasting, bevel ends are fully machined by advanced equipment Double Beveling Machine ensure the height, length, thickness, O.D. and I.D. are all qualified.
Beveled Ends
The ends of all buttweld fittings are bevelled, exceeding wall thickness 4 mm for austenitic stainless steel, or 5 mm for ferritic stainless steel. The shape of the bevel depending upon the actual wall thickness. This bevelled ends are needed to be able to make a "Butt weld".
Welding Bevel acc.to ASME / ANSI B16.9 and ASME / ANSI B16.28
ASME B16.9 Pipe elbows Interanational mark for delivery
ASME B16.25 covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements for welding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and dimensional tolerances).
Our in-hourse R&D team developed bevel ends equipment are good using in thickness 2mm to 20mm pipe fittings, guarantee high efficiency and high quality.
These weld edge preparation requirements are also incorporated into the ASME standards (e.g., B16.9, B16.5, B16.34).
Nominal wall Thickness : t
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End Preparation
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t<5mm (for austenitic alloy steel
t<4mm)
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Cut square or slightly chamfer
at manufacturer ' s option
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5<t<22mm
(4<t<22mm)
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Plain Bevel as in sketch ( a ) above
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t>22mm
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Compound Bevel as in sketch ( b ) above
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