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Gas Welding

Plate Thickness in mm Welding Technique Filler Rod Dia in mm O2 Consumption
in cu m/hr 		Acetylene Consumption
in cu m/hr 		Welding Time per meter in min Length of
Filler rod required/m
of welding
in meter
1 Leftward 1.00 0.04 0.02 9 to 11 1.0
2 " 2.0 0.10 0.04 10 to 12 1.5
3 " 2.5 0.12 0.07 12 to 13 1.6
4 " 3.0 0.15 0.10 13 to 15 2.6
5 " 3 or 4 0.21 0.14 15 to 17 4.0 or 1.8
5 Rightward 2.5 0.3 0.20 16 to 18 3.3
6 " 3.0 0.4 0.25 18 to 20 3.4
8 " 4.0 0.5 0.30 20 to 28 3.6
10 " 5.0 0.7 0.5 30 to 35 4.5
15 " 6.0 1.0 0.6 45 to 50 6.8
20 " 6.0 1.2 0.8 60 to 67 10.0
25 " 6.0 1.6 0.9 85 to 100 16.0



Plate
Thickness
in mm		 Nozzle Diam.
in mm		 O2 pressure kg/cm2 Consumption m2/hr Cutting Speed m/hr
Head Machine O2 C2H2
Head Machine Head Machine Head Machine
3 0.8 or 1 1.0-
1.65		 1.0-
2.0		 1.3-
1.4		 1.2-
1.4		 0.2-
0.25		 0.18-
0.25		 30-
45		 30-
50
 
5 1 0.75-
1.50		 0.75-
2.0		 1.8-
2.0		 0.8-
2.0		 0.15-
0.20		 0.12-
0.20		 20-
30		 18-
32
 
10 1 or 1.5 1.5-
2.0		 1.5-
3.5		 1.2-
2.4		 1.0-
2.4		 0.20-
0.25		 0.15-
0.25		 15-
30		 15-
30
 
15 1.5 1.7-
2.5		 1.5-
3.5		 3.5-
4.5		 3.5-
4.5		 0.33-
0.45		 0.33-
0.42		 18-
27		 18-
30
 
25 1.5 3.1-
2.8		 2.0-
2.8		 3.6-
5.0		 3.6-
0.47		 0.36-
0.47		 0.35-
0.47		 15-
28		 18-
30