large steel head spindle for BS standard 33kV pin typ einsulators
BS standard large steel head spindle , it is common used for 11kV
,25KV,33KV porcelain pin type insulators .
based on different cross arm material , wood or steel , the spindle
length below shank can be adjusted .
the spindle are made of forged steel , the product surface are hot
dip galvanized . the zinc thickness are more than 86μm
Suitable for distribution lines , assembled with porcelain pin type
insulators 11kV ,25kV ,33 kV etc.
the spindle shank can be longer or shorter , it depends on whether
the spindle will be used for wooden crossarm or steel crossarm .
the main function of spindle is for the firmly support of
insulators , and also provide 5kN ~ 10 KN cantilever strength .
1) the spindle body are made of forged steel , major is 45# steel .
all steel come from first class steel factory of China , which can
guarantee the steel almost no any defect , both mechanical
performance and chemical charactor are even and stable .
2) the spindle surface finish are very smooth and shining , which
covered a layer of zinc coating . the surface without any fins ,
zinc missing , bubble etc. it have excellent erosion -proof