EVERBRIGHT

Technical Support
Pipe Fittings, End Beveling
We aware the beveling is very important processes in the whole production procession of butt-welding pipe fittings, we always make beveling according to the standard strictly.

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.

Pipe elbows

Welding Bevel acc. to

  • ASME B16.9, Factory-Made Wrought Steel Buttwelding Fittings

  • ASME B16.28, Buttwelding Short Radius Elbows and Returns

  • ANSI/ASME B16.25, Buttwelding Ends

  • MSS SP-97, Socket Welding, Threaded, and Buttwelding Ends

Bevelled 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 B16.25 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.

End bevel

Send us your technical drawings

These weld edge preparation requirements are also incorporated into the ASME standards (e.g., B16.9, B16.5, B16.34).

Nominal wall Thickness : t
End Preparation
t<5mm (for austenitic alloy steel
t<4mm)
Cut square or slightly chamfer
at manufacturer ' s option
5<t<22mm
(4<t<22mm)
Plain Bevel as in sketch ( a ) above
t>22mmCompound Bevel as in sketch ( b ) above
Nominal pipe
DN size
Outside Diameter at BevelCenter to End
D1D2CM
Series ASeries BSeries ASeries B
20×1526.92521.3182929
25×20
25×15
33.7
33.7
32
32
26.9
21.3
25
18
38
38
38
38
32×25
32×20
32×15
42.4
42.4
42.4
38
38
38
33.7
26.9
21.3
32
25
18
48
48
48
48
48
48
40×32
40×25
40×20
40×15
48.3
48.3
48.3
48.3
45
45
45
45
42.4
33.7
26.7
21.3
38
32
25
18
57
57
57
57
57
57
57
57
50×40
50×32
50×25
50×20
60.3
60.3
60.3
60.3
57
57
57
57
48.3
42.4
33.7
26.9
45
38
32
25
64
64
64
64
60
57
51
44
65×50
65×40
65×32
65×25
76.1(73)
76.1(73)
76.1(73)
76.1(73)
76
76
76
76
60.3
48.3
42.4
33.7
57
45
38
32
76
76
76
76
70
67
64
57
80×65
80×50
80×40
80×32
88.9
88.9
88.9
88.9
89
89
89
89
76.1(73)
60.3
48.3
42.4
76
57
45
38
86
86
86
86
83
76
73
70
90×80
90×65
90×50
90×40
101.6
101.6
101.6
101.6
-
-
-
-
88.9
76.1(73)
60.3
48.3
-
-
-
-
95
95
95
95
92
89
83
79
100×90
100×80
100×65
100×50
100×40
114.3
114.3
114.3
114.3
114.3
-
108
108
108
108
101.6
88.9
76.1(73)
60.3
48.3
-
89
76
57
45
105
105
105
105
105
102
98
95
89
86
125×100
125×90
125×80
125×65
125×50
139.7
139.7
139.7
139.7
133

133
133
133
114.3
101.6
88.9
76.1(73)
60.3
108
-
89
76
57
124
124
124
124
124
117
114
111
108
105
150×125
150×100
150×90
150×80
150×65
168.3
168.3
168.3
168.3
168.3
159
159 
-
159
159
139.7
114.3
101.6
88.9
76.1(73)
133
108
-
89
76
143
143
143
143
143
137
130
127
124
121
200×150
200×125
200×100
200×90
219.1
219.1
219.1
219.1
219
219
219
-
168.3
139.7
114.3
101.6
159
133
108
-
178
178
178
178
168
162
156
152
200×200
200×150
200×125
200×100
273.0
273.0
273.0
273.0
273
273
273
273
219.1
168.3
139.7
114.3
219
159
133
108
216
216
216
216
208
194
191
184
300×250
300×200
300×150
323.9
323.9
323.9
325
325
325
273.0
219.1
168.3
273
219
159
254
254
254
241
229
219
300×125323.9325139.7133254216
350×300
350×250
350×200
350×150
355.6
355.6
355.6
355.6
377
377
377
377
323.9
273.0
219.1
168.3
325
273
219
159
279
279
279
279
270
257
248
238
400×350
400×300
400×250
400×200
400×150
406.4
406.4
406.4
406.4
406.4
426
426
426
426
426
355.6
323.9
273.0
219.1
168.3
377
325
273
219
159
305
305
305
305
305
305
295
283
273
264
450×400
450×350
450×300
450×250
450×200
457.2
457.2
457.2
457.2
457.2
478
478
478
478
478
406.4
355.6
323.9
273.0
219.1
426
377
325
273
219
343
343
343
343
343
330
330
321
308
298
500×450
500×100
500×350
500×300
500×250
500×200
508.0
508.0
508.0
508.0
508.0
508.0
529
529
529
529
529
529
457.2
406.4
355.6
323.9
273.0
219.1
478
426
377
325
273
219
381
381
381
381
381
381
368
356
356
346
333
324
550×500
550×450
550×400
559
559
559
-
-
-
508
457
406
-
-
-
419
419
419
406
394
381
600×550
600×550
600×450
610
610
610
-
630
630
559
508
457
-
530
480
432
432
432
432
432
419
650×600
650×550
650×500
660
660
660
-
-
-
610
559
508
-
-
-
495
495
495
483
470
457
700×650
700×600
700×550
711
711
711
-
720
-
660
610
559
-
630
-
521
521
521
521
508
495
750×700
750×650
750×600
762
762
762
-
-
-
711
660
610
-
-
-
559
559
559
546
546
533
800×750
800×700
800×650
813
813
813
-
820
-
762
711
660
-
720
-
597
597
597
584
572
572
850×800
850×750
850×700
864
864
864
-
-
-
813
762
711
-
-
-
635
635
635
622
610
597
900×850
900×800
900×750
914
914
914
-
920
-
864
813
762
-
820 
-
673
673
673
660
648
635
950×900
950×850
950×800
965
965
965
-
-
-
914
864
813
-
-
-
711
711
711
711
698
686
1000×950
1000×900
1000×8500
1016
1016
1016
-
1020
-
965
914
864
-
920 
-
749
749
749
749
737
724
1000×1000
1050×950
1050×900
1067
1067
1067
-
-
-
1016
965
914
-
-
-
762
762
762
711
711
711
1100×1050
1100×1000
1100×950
1118
1118
1118
-
1120
-
1067
1016
965
-
1020 
-
813
813
813
762
749
737
1150×1100
1150×1050
1150×1000
1168
1168
1168
-
-
-
1118
1067
1016
-
-
-
851
851
851
800
787
775
1200×1150
1200×1100
1200×1050
1220
1220
1220
-
1220
-
1168
1118
1067
-
1120 
-
889
889
889
838
838
813
Nominal pipe sizeOutside Diameter at BevelCenter to End
DCM
DNINCHSeries ASeries B
151/221.31825
203/426.92529
25133.73238
3211/442.43848
4011/248.34557
50260.35764
6521/276.1(73)7676
80388.98986
9031/2101.695
1004114.3108105
1255139.7133124
1506168.3159143
2008219.1219178
25010273.0273216
30012323.9325254
35014355.6377279
40016406.4426305
45018457.2478343
50020508.0529381
55022559419
60024610630432
65026660495
70028711720521
75030762559
80032813820597
85034864635
90036914920673
95038965711
10004010161020749
1050421067762711
11004411181120813762
1150461168851800
12004812201220889838

End connections

There are four different type of connections that are used for fittings:

  • Butt Weld Fittings – Probably the most common type of fitting. They are easily manufactured and are easily installed. Butt weld fittings can be connected directly to each other. This is called fitting make up.

  • Flanged Fittings – Flanged fittings are piping components where the flange is an integral component of the fitting. These are most often used in water treatment applications or lined piping where welding would be destructive to the liner.

  • Socket Weld Fittings – These fittings have a socket weld connection on each end. They might be used for smaller diameter piping. These fittings utilize a single fillet weld to join the piping with the fitting.

  • Threaded Fittings – Threaded fittings are generally four inches and smaller. The reason for this size constraint is the pipe end needs to be threaded with a male type connection and die sizes are unobtainable in the larger diameters.


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