... % of wall thicknessc)Length: ± 0.0-4.5mmApplicationconstruction upholstery, decorating lighting fitting piece, fluid pipeline, irregular shape tube, duplexing tubenameSquare pipesSize RangeO ... upholstery,and industry instruments (fencing,railing,safe door/windows,gate fitting,inside staircases ,balcony balustades,furniture,sanitary wares,kitchen wares seamless ...