DIFF Subgroup
B21C 37/14 Making tubes from doubled flat material
Introduced: September 1968
Full Title
Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape > of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes > Making tubes from doubled flat material
No child classifications to compare. This is a leaf node in both IPC and CPC.