... -Length 6000mm, Tolerance ±10mm.d. Straightness≤0.5~1.0mm.e. Roundness tolerance≤0.3~0.8mm. The features of Stainless ... .3, Heavy Industry:Piping for Boiler, Electricity Factory, Chemical Engineering, Diesel Engine, Shipbuilding.4, Leisure: Exercise Equipment, Baby Cradle/Stroller, Entertainment Equipment ...