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Tianjin Fine Co., Ltd.
天津市泛易紧固件有限公司
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15 Years
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ANSI screws
High-strength fasteners
Special fasteners for the petrochemical
Double ended studs
Studs
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(GB /T 31.1 - 1988)
material
Alloy Steel
grade, rigidity
grade 12.9
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Similar Products
GB /T 31.1 - 2013
GB 31.2 - 1988
GB 31.3 - 1988
