18NiCr5-4  20MnB5  18NiCr5-4  20MnB5  SWRCH30K SWRCH33K SWRCH35K SWRCH38K SWRCH40K SWRCH41K SWRCH43K SWRCH45K SWRCH48K SWRCH50K 
彈簧鋼：SPS1 SPS3 SPS4 SPS5 SPS5A SPS6 SPS7 SPS8 SPS9 STB1 STB2 STB3 STB4 STB5 SH590P SH590S 

SWRCH30K SWRCH33K SWRCH35K SWRCH38K SWRCH40K SWRCH41K SWRCH43K SWRCH45K SWRCH48K SWRCH50K 
彈簧鋼：SPS1 SPS3 SPS4 SPS5 SPS5A SPS6 SPS7 SPS8 SPS9 STB1 STB2 STB3 STB4 STB5 SH590P SH590S 
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