Product Details. The portable chamfering machine hand chamfering machine is used to chamfer the iron tube with a correct and nice angle. The chamfer tube processing can be used widely in different fields:Weld testing coupons,Plant process piping,Structural piping,Handrails and Staircases,Steel piling - Vertical support,Drill pipe,Drill casing - Oil drilling,Sub sea oil & gas piping,Oil & gas Plant Processing Pipe,Vehicle Manufacturing,Exhaust tubing,Truck tubes,Steering columns,Axle ...