Q 614B-1999
Square head semi-tubular bolts
QC/T 379-1999
Square head bolts
QC/T 379-1999
Tapered square head bolts
Q 617B-1999
Hexagon head plugs
QC/T 376-1999
Hexagon head plug
Q 618B-1999
Hexagon taper plugs
Q 618B-1999
Hexagon semi-tubular taper plugs
QC/T 381-1999
Hexagon taper plug
QC/T 381-1999
Hexagon semi-tubular taper plug
QC/T 381-2013
Hexagon taper plug
QC/T 381-2013
Hexagon semi-tubular taper plug
QC/T 378-1999
Inner hexagon conical screw plug
Q 620-1999
Magnetic core
Q 621-1999
Square groove tapered magnetic plugs
QC/T 384-1999
Square groove tapered magnetic plug
Q 622-1999
Hexagon outside head cone plugs with magnetic core(dz≤NPT1)
Q 622-1999
Hexagon outside head cone plugs with magnetic core(dz＞NPT1)
QC/T 383-1999
Hexagon outside head cone plugs with magnetic core(dz≤NPT1)
QC/T 383-1999
Hexagon outside head cone plugs with magnetic core(dz＞NPT1)
Q 623-1999
Hexagon magnetic screw plug
