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Help CenterSteel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82B
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Steel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82BNegotiableMOQ: 5 Metric Tons -
Steel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82BNegotiableMOQ: 5 Metric Tons
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Steel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82BNegotiableMOQ: 5 Metric Tons
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Steel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82BNegotiableMOQ: 5 Metric Tons
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Steel Wire & Coil Wire，Q195、Q235、45#、60#、65#、70#、SWRH42A、SWRH62A、SWRH72A、SWRH82BNegotiableMOQ: 5 Metric Tons
1. Product Overview
Steel wire is one of the four major steel product categories including steel plates, steel pipes, steel sections and steel wires. It is processed from hot-rolled wire rods via pickling & phosphating, multi-pass cold drawing, heat treatment, surface coating and other precision manufacturing processes. Featuring wide adjustable strength range, modifiable toughness, good corrosion resistance and easy forming performance, it serves as an indispensable metal raw material for construction, machinery, bridges, mining, communications, agriculture, hardware and other industries.
2. Applicable Standards
Domestic Chinese National Standards
GB/T 341-2008 Classification and Terminology of Steel WiresGB/T 4357 Carbon Steel Cold-Drawn WiresGB/T 15393 Galvanized Steel WiresGB/T 4358 Carbon Spring Steel Wires for Important ApplicationsGB/T 5224 Steel Wires for Prestressed ConcreteGB/T 24238 Standards for Steel Cord and Tire Bead Wire
International General Standards
ASTM A227/A228 American Standard Spring Steel WiresEN 10218 General Specification for Steel Wires of European StandardJIS G3521, JIS G3541 Japanese Standard Hard Wire and Galvanized Steel WireISO 7989 Test Standard for Hot-Dip Galvanized Coating on Steel Wire
3. Main Classifications (By Material & Surface Treatment)
3.1 Plain Bright Carbon Steel Wire
Material Grades: Q195, Q235, 45#, 60#, 65#, 70#, SWRH42A, SWRH62A, SWRH72A, SWRH82BDiameter Range: 0.1mm ~ 12mmSurface Condition: Bright finish without coating, thin anti-rust oil filmPerformance Features: Good plasticity, easy bending and welding, cost-effectiveApplication Scenarios: Binding wire, nail manufacturing, wire mesh, strapping & bundling, handicrafts, construction tying wire, common mechanical welded parts
3.2 Hot-Dipped / Electro-Galvanized Steel Wire
Material: Low-carbon & medium-high carbon wire rodCoating Differences
Electro-galvanized wire: Thin zinc coating (15~40g/㎡), bright surface, suitable for dry indoor environments
Hot-dipped galvanized wire: Thick zinc coating (80~280g/㎡), excellent salt spray resistance against outdoor rainwater and coastal corrosion; no rust after 96 hours of neutral salt spray testSpecifications: 0.2mm ~ 10mmApplications: Orchard fencing, breeding wire mesh, overhead power stay wire, communication optical cable steel wire, greenhouse framework, ship strapping, river protection mesh
3.3 Carbon Spring Steel Wire (High-Carbon Hard Wire)
Materials: 65Mn, 70#, T9A, SWRH72B, 82BStrength Grades: Grade A (low strength), Grade B (medium strength), Grade C (high strength), tensile strength ranging from 1200MPa to 3200MPaCore Advantages: High elasticity, fatigue resistance, no fracture after repeated bending, excellent torsional performanceApplications: Shock-absorbing springs, mechanical valve springs, tension equipment, bicycle components, elastic parts for instruments and meters, hardware spring plates
3.4 High-Strength Prestressed Steel Wire
Material: Premium high-carbon steel SWRH82BDiameters: 4.0mm / 5.0mm / 6.0mm / 7.0mmStrength Grades: 1570MPa, 1770MPa, 1860MPaFeatures: Ultra-high tensile strength, low relaxation, stable bearing capacitySpecialized Fields: Bridge stay cables, precast box girders, elevated highways, prestressed engineering for large factories, raw material for steel strands
3.5 Copper-Coated Tire Bead & Rubber Hose Wire
Materials: SWRH72A, YLX70ASurface: Uniform copper coating with strong bonding force to rubber without delaminationDiameters: 1.3mm ~ 5.5mmApplications: Automobile tire bead, high-pressure rubber oil hose, reinforcement framework for hydraulic hoses, reinforcing wire for conveyor belts
4. Size Classification
Ultra-fine steel wire: Diameter ＜0.1mm, for textile and precision instruments
Fine steel wire: 0.1mm ~ 1.5mm, for filter mesh, springs and handicrafts
Medium steel wire: 1.5mm ~ 3.0mm, for binding wire, fencing mesh and tire bead
Thick steel wire: 3.0mm ~ 6.0mm, for prestressed engineering, wire rope manufacturing and greenhouse framework
Extra-thick steel wire: Diameter ＞6.0mm, for construction machinery and bridge stay cables
Diameter Tolerance: Standard tolerance ±0.02~±0.05mm; high-precision customization available up to ±0.01mm
5. Core Mechanical Properties
Tensile Strength: Low-carbon wire 380~800MPa; medium-carbon wire 800~1600MPa; high-carbon spring & prestressed wire 1600~3200MPa
Torsion Performance: High-carbon steel wire meets the minimum torsion cycles specified in national standards with no cracks or wire breakage
Bending Toughness: Capable of repeated bending around a mandrel with 3 to 10 times its own diameter without cracking
Coating Adhesion: Zinc/copper coated wire shows no peeling or coating shedding after 180° bending
6. Packing Methods
Large Coils: 50kg / 100kg / 500kg / 1000kg industrial coils wrapped with waterproof plastic film, standard for foreign trade
Spool Packing: 10~50kg wire spools for fine and precision spring wire to avoid tangling during unwinding
Small Bundled Rolls: 25kg small rolls packed with woven bags plus double-layer inner plastic film for moisture-proof
Export Reinforced Packing: Wooden pallets fastened with steel strips with full moisture-proof anti-rust treatment for sea transportation
7. Transportation, Storage & Operation Precautions
Store goods in dry and ventilated warehouses; avoid rain exposure and direct contact with damp ground to prevent surface oxidation and rust. Rewrap unused steel wire tightly after opening.
Handle with care during loading and unloading to prevent sharp bending and coating damage caused by violent impact.
Maintain uniform tension during unwinding to avoid tangling, twisting and damage to mechanical performance.
Regularly inspect zinc coating of outdoor galvanized products; prefer thick hot-dipped galvanized wire for coastal high-corrosion areas.
8. Delivery & Commercial Terms
Minimum Order Quantity: 1 metric ton, favorable unit price for bulk orders
Payment Terms: 30% TT advance deposit, full balance settled before shipment; Letter of Credit (L/C) is not acceptable
Loading Port: Production delivery lead time 5-7 working days
Supporting Services: Material certificates, mechanical test reports, certificates of origin and commodity inspection documents are available. Customization of dimensions, coating thickness, tensile strength and coil weight is supported.
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