QC/T 379-2013
方头锥形螺塞
Square head cone plugs
2013-04-25
QC/T 381-2013
六角头锥形螺塞
Hexagon outside head cone plugs
2013-04-25
QC/T 383-2013
六角头锥形磁性螺塞
Hexagon outside head cone plugs with magnetic core
2013-04-25
QC/T 378-2013
内六角锥形螺塞
Hexagon countersunk headless cone plugs
2013-04-25
QC/T 884-2011
内六角锥形磁性螺塞
Hexagon socket pipe magnetic plugs
2011-12-20