TECHNICAL MANUAL - Sharq.biz

Visually check that the pipes are freeof cuts and abrasions (the maximumdepth admitted is equal to 10% of the wallthickness). Eventual anomalies must betaken out by cutting the interested pipesection.The pipes ends to be welded must be cutat right angle preferably using proper pipecutters.Avoid to use excessive ovalized pipes.In any case, the ovalization cannot exceed1,5% calculated as follows:OV=d e max- d e mind nx 100d e = external diameter at any pointd n = nominal diameterOvalization and bending are reduced by using special re-rounders. The coiledpipes must be unrolled at least 24 hours before its use. Avoid the use of heatsources to recover possible ovalizations or to reduce the pipe bending.40