... used in freezer,refrigerator also passed ISO9001 quality attestation system. single wall bundy tube1)material:be made of bao steel strap,low ... .00mm,4.76mm,6.00mm,6.35mm,8.00mm;4)wall thickness:0.50mm,0.60mm,0.65mm,0.70mm;5 ... quality attestation system;7)competitive price among the same area. single wall bundy tube