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There are more than 20 small ,medium and large production equipment. The main products are DIN standard ,ISO standard ,ASME standard,BS standard ,AS standard .
DIN603 Carriage Bolt
BS Standered Carriage BoltU BOLT
U BOLT
DIN6921 Hexagon flange bolt
WASHER
Drywall Screw
DIN571
Double Stud
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Xiduanzhuang Village ,Yongnian,District,Handan City,Hebei Province, China.
Flat pad, flat pad is mainly stamped out with iron plate, the shape is generally a flat washer, with a hole in the middle.There is a calculation formula in the “Standard Fastener Quality Encyclopedia” published by China Standards Press. The formula is: Weight of one thousand pieces m=0.00785×{3.1416/4×washer height× [Square of outer circle diameter-square of inner hole diameter]}
key word:
隐藏域元素占位