Welding Tips and Tricks

i have a durma 80 profile roller with 2" pipe dies ( 2 .375 od ) trying to coil 2" pipe to 30" od
20 ft joints , it roll the pipe but brakes before or after the weld , some work . 3 joints / 2 joints /5 joints
pipe is astm a53 gr b sch40 pipe try mig welding pre heat/ pro heat / stick want to try tig,
how should i go about it? should i have better pipe? the coils are for a heater truck ( hot oiler)

walt

For 5 joins, just roll the pipe and weld it after.... Coil pipe is only for huge jobs and xray quality.