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Guard-rail Bolts
Bolts
Nuts
Washers
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Others 1
Others 2
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KO
About Us
About Us
History
Partners
How to Find us
Products
Guard-rail Bolts
Bolts
Nuts
Washers
Anchors
Screw & Piece
Others 1
Others 2
Technical Data
Process Flow Chart
Certification
Reports
Machine Equipment List
Quality Inspection
Community
Notices
Customer Inquiries
Catalog Download
E-Catalog
Technical Data
Creative Company, Reliable Company, Leading Company, Yeongnam Bolt
Process Flow Chart
Certification
Reports
Machine Equipment List
Quality Inspection
H
Technical Data
About Us
Products
Technical Data
Community
E-Catalog
Process Flow Chart
Process Flow Chart
Certification
Reports
Machine Equipment List
Quality Inspection
Process Flow Chart
01. Importing raw material
Purchase and import raw material
02. Cold heading
Manufacture products by cold heading
03. Rolling
Rolling (face cutting, trimming) according to its use
04. External process
Heat treatment and surface finishing carried out by external company
05. Inspection
Import and examine after external process
06. Shipping
Pack and ship product
Cold Heading: Pressing without heating the metal
Rolling: Making the gear or thread
Face cutting: Cutting the edge
Trimming: Removing unnecessary parts