Features:
1) Diameter: 20-80mm
2) Materials: 60Si2Mn (9260 or SUP6), 50CrVA (6150 or SUP10),
60Si2CrA (9262 or SUP12)
3) Mainly used in electronic vehicles, digging machines, industry
ovens, heavy machines and other huge assets
4) All of high quality

all springs with the diameter 20-80mm are hot coiled. with the advanced hot coil  spring assembly line. and also wei cooperate with jingyin xiangcheng material and baogang steel company. with the good manufactue capacity . all springs are have high quality.

Packing: wooden boxes