2017JB/T 6103.2-2017 Profile bending machine Part 2: Technical conditions
1998JB/T 8777-1998 Technical conditons of section-bending michine
JB/T 6103.2-2017 Profile bending machine Part 2: Technical conditions has been changed from JB/T 8777-1998 Technical conditons of section-bending michine.