Shutter door springs

XULONG shutter door spring 4


XULONG SPRING have been struggling in spring field since 30 years ago and its springs are used

widely in lots of industries,the below spiral spring is used in sping box of shutter door to lift the

door,and its basic datas is as follow:

material:SAE 1070



weight:about 1.8kg


both side round edge.

by the way,all of XULONG's spring are made as per customer's drawing or sample,so yours are welcome too !

shutter door spring made by China XULONG SPRING

china spring box

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