
CHQ Wire
Cold Heading Quality (CHQ) wire is produced through drawing or annealing the raw material. Our customers use our product to manufacture fastening components like bolts, nuts, screws, and mechanical parts for the automotive, electronics, and construction industries.
01
High-quality cold-worked products produced in cutting-edge facilities

SeAH Special Steel produce excellent quality CHQ wire with high durability and precision using cutting-edge facilities, such as a hydrogen bell-type furnace and an automatic pickling line, and supply it to global markets.
02
Establishment of a supply chain to differentiate manufacturing competitiveness

SeAH Special Steel has the largest manufacturing capacity in the CHQ wire market and distinguishes itself through strict supply chain management to meet delivery deadlines.
03
Specialized coating processes for superior surface quality

SeAH Special Steel Secure a portfolio of specialized coatings, such as non-phosphating and oil-cleaning coatings, and achieve aesthetically pleasing and superior surface quality to meet a wide range of customer needs.
Competitive products

Hydrogen bell-type furnace heat treated products
Our heat treated products exhibit dramatically improved quality, including spheroidized texture, mechanical properties, and uniform coating. These products excel in cold forming, extend mold life, and enhance the heat treatment of the notoriously difficult-to-heat-treat SWCH45F bearing steel.

Seam-free wire products
Seam-free wire product prevents surface defects that may occur in the raw material. Once produced, it is shaved to a specific depth with a shaving machine to remove any defects that may occur during cold forming. It is a strategic product designed to meet demanding and stringent quality standards.
Featured products
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Types
Steel grade
Usage
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Carbon steel
SWCH-A, SWCH-K(F)
Bolt, Nut, Screw
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Boron steel
SAE10B21, SAE51B20,
POSA1021B,
POSA5120BHShafts for safety belts, bolts for automotive, and bolts for construction
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Chromium-Molybdenum steel
SCM415(H), SCM420(H),
SCM435(H), SCM440HVarious types of bolts, piston pin materials
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Molybdenum steel
SAE4037
Bolts for automotive
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Nickel-Chromium-Molybdenum Steel
SAE8620H, SAE8740H
Gear for oil pump, bolts for aircraft
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Bearing steel
SUJ2, SAE52100
Bearing components
Demand industry
Specifications for packing

Steel banding
Product secured with a steel frame (no packaging)

Packaging
Securing the product to a steel frame in a circle

Carrier Packaging
Products packaged in gunny sacks

Packaging + Corrugated cardboard
Double-wrapped with corrugated cardboard covering a portion of the top