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Help CenterSteel Wire & Galvanized Steel Wire，Q195、Q235、SAE1008、65Mn、72A、82B
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1. Product Definition
Carbon steel wire is thin circular metal wire manufactured from hot rolled carbon steel wire rod via pickling & phosphating, multi-pass cold drawing, annealing, surface galvanizing and other continuous processes. It features high strength, good toughness and excellent bending & welding performance. Classified by carbon content into low-carbon, medium-carbon, high-carbon and low-alloy steel wire, widely used for binding, weaving, springs, prestressing, wire rope twisting and hardware processing.
Domestic Standards:GB/T 343 Low Carbon Steel Wires for General PurposeGB/T 4357 Carbon Steel Spring WiresGB/T 5223 Steel Wires for Prestressed ConcreteGB/T 30828 Galvanized Steel WiresInternational Standards: ASTM A853, EN 10270, JIS G3532
2. Classification by Carbon Content
1. Low Carbon Steel Wire (Q195, Q235, C ≤0.25%)
Excellent ductility, easy bending, welding and twisting with low tensile strength, no cracking during processing, including bright cold drawn wire, annealed black wire and hot-dip galvanized low carbon wire.Application: Construction binding wire, nail making, breeding mesh, greenhouse weaving, manual packing, welded wire mesh.
2. Medium Carbon Steel Wire (45#, 55#, C 0.30%–0.55%)
Balanced strength and toughness with medium tensile strength, suitable for medium-load elastic parts and wire rope core wire.Application: Protective fences, light-duty steel wire ropes, ordinary mechanical springs, stamping hardware parts.
3. High Carbon Steel Wire (60#, 65#, 70#, 72A, C 0.60%–0.90%)
Ultra-high tensile strength and outstanding fatigue resistance after cold drawing, core raw material for springs, prestressing strands and steel wire ropes.Application: Industrial springs, prestressed steel wires for bridges, steel strands, hoisting wire ropes, tire bead wire.
4. Low Alloy Steel Wire (40Cr, 30CrMnSi)
Alloyed with Cr & Mn elements, high temperature resistance, impact and fatigue resistance for heavy-duty elastic components.Application: Heavy machinery springs, engineering machinery elastic fittings, high-temperature wire rope wire.
3. Classification by Surface Treatment
Cold Drawn Bright WireNo coating, formed with phosphating lubrication, bright smooth surface, lowest cost; only for dry indoor use, prone to rust.
Annealed Black WireLow-temperature annealed for ultra-soft ductility, ideal for simple packing and manual twisting.
Hot-Dip Galvanized WireFully immersed in molten zinc liquid with thick, well-adhered zinc coating, superior salt spray resistance, top choice for outdoor, coastal and long-term hydraulic projects.
Al-Zn Alloy Coated Wire55% Al-Zn alloy coating, high temperature resistance and self-repair on cutting edges, longer service life than ordinary galvanized wire for photovoltaic and roof mesh accessories.
PVC Coated WireGalvanized base covered with polyethylene outer layer, acid & alkali resistant, insulated, customizable colors for breeding fences, garden protection and sports nets.
4. Product Categories by Application
Binding WireSoft low-carbon annealed / galvanized wire 0.5–4.0mm, for construction rebar tying, logistics packing and farm binding.
Weaving Mesh WireUniform dimension and smooth surface for welded mesh, guardrail mesh, breeding net and filter mesh.
Spring WireMedium & high carbon cold drawn / oil tempered wire with good fatigue resistance for industrial springs, spring sheets and clips.
Wire Rope Core WireHigh carbon high tensile wire for twisting steel wire ropes and strands, lifting, mining and marine traction.
Prestressed Steel WireStress-relieved low-relaxation high carbon wire, plain / spiral ribbed / indented types for bridges, pipe piles and large precast concrete structures.
Nail Making WireHigh precision low carbon bright wire for manufacturing iron nails and concrete nails.
5. Complete Specification Parameters
Nominal Diameter Range: 0.2mm–12.0mmCommon sizes: 0.3, 0.5, 0.8, 1.0, 1.2, 1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0mm
Dimensional Tolerance0.2–1.0mm: ±0.02mm; 1.0–3.0mm: ±0.04mm; 3.0–12.0mm: ±0.06mm
Delivery FormLarge I-spool, small coil, straight cut fixed length; single coil weight customizable from 10kg to 1000kg
Coating StandardHot-dip zinc coating weight: 40–280g/㎡; PVC coating thickness 0.2–1.0mm
Tensile Strength RangeLow carbon: 380–800MPa; Medium carbon: 800–1300MPa; High carbon spring / prestressed wire: 1400–2200MPa
6. Core Product Advantages
Comprehensive Processing PerformanceSoft low-carbon wire for easy bending; high carbon wire for high fatigue strength; all grades support welding, stamping, twisting and stranding deep processing.
Full Anti-Corrosion SolutionsMultiple surface options: bright finish, galvanized, Al-Zn coated and PVC coated, suitable for indoor, inland, coastal and acid-alkali corrosive environments.
Stable Dimensional PrecisionMulti-pass precision cold drawing ensures uniform diameter, consistent forming effect for weaving, spring and prestress production.
Complete Strength GradesCovers light binding to ultra-high strength prestressing, meets full scenarios from light packaging to heavy infrastructure.
Cost-EffectiveLow cost carbon raw material, recyclable, lower overall cost compared with alloy wire products.
Stable Anti-Fatigue FormingHigh carbon & alloy wire processed by controlled annealing / oil tempering, not easy to break or relax under long-term cyclic load.
7. Main Application Fields
Construction IndustryRebar binding wire, welded mesh, protective fences, bridge prestressed wire, raw material for precast pipe pile steel strands
Agriculture & BreedingGreenhouse woven mesh, breeding fences, fruit tree binding, farm protection net
Hardware ManufacturingIron nails, U-clips, springs, stamping clips, metal crafts and small hardware accessories
Lifting & Wire Rope IndustryTwisted steel wire ropes, lifting slings, mine hoisting ropes, marine traction cables
Municipal & LandscapeGarden guardrails, stadium perimeter nets, river protection mesh, green binding wire
Transportation InfrastructureRoad isolation mesh, photovoltaic support matching mesh, tunnel protective mesh
Light Industry & PackagingCarton packing, metal wire binding, manual fixing
8. Export Packing, Lead Time & Delivery Documents
PackingSmall coils wrapped with waterproof kraft paper; large I-spools covered with plastic film; extra anti-rust moisture film for sea shipment, fixed with steel straps; coil surface marked with grade, diameter, coating type and weight.
Lead TimeStandard in-stock low carbon galvanized / bright wire: 1–3 working daysCustom high carbon spring wire, prestressed wire and PVC coated wire: 5–8 working days
Complete Delivery DocumentsMaterial Test Certificate (MTC), Tensile & Bend Test Report, Zinc Coating Weight Test Report, Factory Inspection Certificate, Spectral Chemical Composition Report
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