Method of welding {HEAD ~ pipes} onto pressure conveying elements, {TAIL ~ especially pipe plates}, pressure containers and collectors 
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Method of welding { HEAD ~ pipes } onto pressure conveying elements , { TAIL ~ especially pipe plates } , pressure containers and collectors
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH