Steel Wire & Nail Making Wire,Q195、Q235、S235JR、45#、55#、60#、65#、70#、82B
1. Product Overview
Steel wire is linear metal profile manufactured from hot rolled wire rod via multi-pass cold drawing, heat treatment and surface coating processes. Round cross-section is standard; square, hexagonal and special shaped wire are also available.Product series covers low-carbon, medium-carbon, high-carbon and alloy steel grades, widely applied in construction, prestress engineering, hardware, wire mesh, springs, steel wire rope, cable and other industries.Compliant with Chinese standards: GB/T 343, GB/T 4354, GB/T 5223, GB/T 18983. We can produce according to international standards including ASTM, EN, DIN, JIS, BS for global export.
2. Material Grades Classification
2.1 Low Carbon Mild Steel Wire (C ≤0.25%)
Grades: Q195, Q235, SAE1006, SAE1008, SWRCH6A~SWRCH22AFeatures: Excellent ductility, easy bending & welding, cost-effective
2.2 Medium & High Carbon High Tensile Wire (C 0.30%–0.85%)
Grades: 45#, 60#, 65Mn, 70#, SWRH62A, SWRH72A, SWRH82BFeatures: High tensile strength, good spring back & wear resistance, for springs, steel strand, prestressed components
2.3 Alloy Steel Wire
40Cr, 65Si2Mn, 30CrMnSi, outstanding fatigue & heat resistance for heavy-load elastic parts
3. Surface Treatment
Bright Cold Drawn Wire (Black Iron Wire): No coating, soft after annealing, for binding, nail making, mesh weaving
Hot-Dipped Galvanized Wire (GI Wire): Thick & firm zinc coating, anti-corrosion for outdoor fence, breeding net
Electro-Galvanized Wire: Thin bright zinc layer, for decoration & small hardware
PVC Coated Steel Wire: Galvanized base with plastic outer layer, acid & alkali resistant for garden guardrail
Phosphated Wire: Lubricant coating for subsequent drawing & cold heading processing
4. Dimension Specifications
4.1 Diameter Range
General range: 0.1mm–12mm
Extra fine wire: 0.1–0.5mm (filter mesh, precision hardware)
Fine wire: 0.6–2.0mm (binding wire, nail, welded mesh)
Medium wire: 2.0–6.0mm (fence, wire rope core, spring)
Heavy wire: 6.0–12.0mm (PC prestressed wire, bridge cable)
4.2 Supply Forms
Big Coil: Single coil weight 800–2000kg, standard export package for automatic continuous processing
Small Coil / Spool: 10–50kg small coil or plastic spool, for manual operation & retail
Cut Straight Bar: Custom fixed length 1–6m, for cold heading bolt & pin production
4.3 Dimensional Tolerance
Diameter tolerance ±0.01~±0.05mm, uniform cross-section without uneven thickness.Theoretical weight formula for round wire: Weight per kilometer (kg/km) = 6.17 × d² (d=diameter)
5. Mechanical Performance Range
Annealed low carbon wire: Tensile strength 300–500MPa, Elongation ≥20%, soft & bendable
Hard cold drawn low carbon wire: Tensile 600–900MPa, high hardness & deformation resistance
High carbon prestressed PC wire: 1570/1670/1770/1860MPa low relaxation grade, high load capacity & anti-fatigue
Spring wire: 1200–2000MPa, no fracture after repeated bending, stable spring back
6. Product Types & Applications
Binding Wire (Black/Galvanized): Construction steel bar tying, carton packing, tree binding
Nail Wire: Uniform low carbon hard wire for iron nail, cement nail, U staple
Mesh Weaving Wire: Raw material for welded mesh, chain link fence, breeding net, filter screen
Spring Wire: Medium/high carbon & oil tempered wire for auto spring, mechanical leaf spring, elastic parts
Prestressed PC Wire: Smooth/indented low relaxation wire for pipe pile, bridge, precast slab, anchor cable
Wire Rope Wire: SWRH82B high carbon wire for twisting steel wire rope & strand
Cold Heading CHQ Wire: SWRCH series for bolt, rivet, nut fasteners
Anti-Corrosion PVC Coated Wire: Suitable for seawater environment, chemical industry, garden and breeding protection equipment
7. Production Process
Hot rolled wire rod → Pickling & phosphating → Multi-pass cold drawing → Continuous heat treatment (annealing / quenching & tempering) → Galvanizing / PVC coating → Coiling → Sampling test for dimension & mechanical property → Packing & warehousing
8. Packing, Storage & Transportation
Packing (Export Standard)
Big coil: Inner plastic film for waterproof, outer PP woven cloth wrapped, fixed with steel strip; bilingual label attached, marked with grade, diameter, weight and heat number
Small coil / spool: Separately wrapped with moisture-proof PE film, palletized for container shipment
Custom for export: Extra anti-rust oil and vacuum packaging available to resist salt fog during ocean transport
Storage
Stack on raised supports in dry and ventilated warehouse, keep galvanized wire away from rain and dampness; store separately by material and size to avoid mixing batches
Transportation
Domestic: Full truck load and railway transportExport: 20GP / 40GP container and bulk carrier shipping
9. Lead Time, Inspection & Certificates
Lead Time: 3–7 working days for spot goods; 7–12 working days for customized products with special coating, high carbon prestressed and alloy wire
Factory Inspection: Sampling test of diameter, tensile strength, elongation, zinc coating thickness and bending test for each batch; unqualified goods are forbidden to deliver
Supporting Documents: Original Mill Test Certificate (MTC) and factory certificate of conformity; SGS, BV, CE third-party inspection reports available for customs clearance worldwide
10. Core Product Advantages
High dimensional precision, uniform diameter without uneven thickness, low processing loss
Compact and firmly adhered surface coating, galvanized layer not easy to peel off, long-term anti-corrosion effect
Stable mechanical performance with small batch fluctuation, excellent performance for bending, drawing and stamping processing
Full size range covered, customized service available for material, coating, coil weight and fixed cutting length
Manufactured according to multiple international standards, applicable for domestic and overseas projects with relevant certification support
Direct supply from factory with sufficient production capacity, stable delivery and capable of large-volume export orders
11. Applicable Industries
Construction engineering, highway & railway bridges, pipe pile prestress, hardware nail production, wire mesh & guardrail, garden breeding, auto spare parts, mechanical springs, steel wire rope & strand, cable & optical cable, chemical anti-corrosion, packaging binding
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