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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 798 - 1988)
material
Carbon steel
grade, rigidity
grade 10.9
Coating
black oxide coating
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GB /T 798 - 2021
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