Q 110-1999
Weld studs for manual welding
QC/T 598-1999
Type A flange weld bolt
QC/T 598-1999
Type C flange weld bolt
QC/T 598-1999
Type B flange weld bolt
Q 198-1999
Type A flange weld bolts
Q 198B-1999
Type B flange weld bolt
Q 198C-1999
Type C flange weld bolt
Q 199-1999
Face projection welding bolt
Q 199B-1999
Face projection welding bolt
QC/T 599.1-1999
Type A face projection welding bolt
QC/T 599.1-1999
Type B face projection welding bolt
Q 370C-1999
Hexagon weld nuts
Q 371-1999
Type A square weld nuts
Q 371-1999
Type B square weld nuts
Q 110-2012
Weld studs
QC/T 857-2011
Weld studs
Q 114-2012
Welding studs for short period arc welding
QC/T 869-2011
Welding studs for short period arc welding
Q 118-2012
Weld studs for plastics
QC/T 881-2011
Weld studs for plastics
