metal tube chair frame, tube table bracket, tube chair bracket, tube rack,funiture ... manufacter and supplier for tubing parts like metal tube chair frame, tube table bracket, tube chair bracket, tube rack, ... 4")Tube thickness: 0.8mm-3mmBend method : Mandrel bend, rotary bend, rolling bendCentral line radius: 1D-upBend radius: to customer ... inquiry for more information today! 304 steel tube chair frame