Certificate No.1 |
Manual metal-arc welding (MMAW) of butt welds in carbon steel plate and carbon steel pipe over 600 mm outside diameter (single vee welded from both sides)
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| Certificate No. 1E |
Manual metal-arc welding (MMAW) of butt welds in carbon steel plate and carbon steel pipe over 270 mm outside diameter (single vee welded from one side only).
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Certificate No. 2 |
Manual metal-arc welding (MMAW) of carbon steel pipe.
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Certificate No. 3 |
Manual metal-arc welding (MMAW) of butt welds using hydrogen controlled electrodes in alloy steel plate and alloy steel pipe over 270 mm outside diameter (single vee welded from both sides).
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| Certificate No. 3E |
Manual metal-arc welding (MMAW) of butt welds using hydrogen controlled electrodes in alloy steel plate and alloy steel pipe over 270 mm outside diameter (single vee welded from one side only).
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Certificate No. 4 |
Manual metal-arc welding (MMAW) of butt welds using hydrogen controlled electrodes in alloy steel pipe (single vee welded from one side only).
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Certificate No. 5 |
Gas tungsten-arc welding (GTAW) root run and manual metal-arc welding (MMAW) of butt welds using hydrogen controlled electrodes in alloy steel pipe (single vee welded from one side only).
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Certificate No. 6 |
Gas welding (GW) (single vee welded from one side only).
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Certificate No. 7 |
Gas tungsten-arc welding (GTAW) (single vee welded from one side only).
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Certificate No. 8F |
Flux-cored arc welding (FCAW) of plate and pipe.
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| Certificate No. 8G |
Gas metal-arc welding (GMAW) of plate and pipe.
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Certificate No. 9 |
Automatic welding.
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