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Ruian Fengtai Standard Co., Ltd.
瑞安市峰泰标准件有限公司
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13 Years
Main Products
Heavy clamps
Shaft retaining rings
Lock washers
Teeth washers
Lock washers
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(GB /T 955 - 1987)
material
High-carbon steel
Coating
black oxide coating
材料：65Mn,热处理硬度HRC40-50，表面氧化处理
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DIN 137 (B) - 1994
DIN 6904 - 1990
DIN 137 (A) - 1987
DIN 137 (B) - 1987
Q 416
CNS 4406 - 1979
YJT 6002
QC /T 363 - 1999
