DL/T 284-2012
Hot dip galvanizing bolts for tower of transmission lines
DL/T 764.4-2002
Hot dip galvanizing bolts for tower of transmission lines
DL/T 764-2014
Hexagon head bolts with split pin hole on shank for electric power fittings
DL/T 764.1-2001
Electric power fitting fasteners Hexagon head bolts with split pin hole on shank