single wall bundy tube,widely used in freezer,refrigerator,auto brake system also passed ISO9001 quality attestation system. bundy tube1)material:low carbon;2 ... )main use:widely used in refrigeration, auto brake system freezer etc;3)outer diameter:3.18mm,4.76mm,6 ... wooden box,pallet,ect.6)also passed ISO9001 quality attestation system;7)competitive price among the same area. refrigeration tube