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Help CenterSteel Wire & Stock Steel Wire，Q195、Q215、Q235、SWRM10、SWRM12、35#、45#、50#、SWRH45A、65#、70#、80#、SWRH72A、SWRH82A
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Steel Wire Product Specification
1. Product Overview
Steel wire is manufactured from hot-rolled carbon steel wire rod via pickling & phosphating, multi-pass cold drawing, heat treatment and surface coating. As one of major steel products together with steel plate, steel pipe and section steel, it is sorted into low-carbon soft wire, medium-carbon hard-drawn wire, high-carbon spring wire and coated anti-corrosion wire. Customization on dimension, coating and material is available for construction, hardware, agriculture, machinery, electric power and prestressed engineering industries.
2. Raw Material Grade & Chemical Composition
Common Grades
Low Carbon Steel Wire: Q195, Q215, Q235, SWRM10, SWRM12 (C≤0.25%, good ductility for bending)
Medium Carbon Steel Wire: 35#, 45#, 50#, SWRH45A (C:0.25%~0.60%, moderate tensile for nail making & cold heading)
High Carbon Steel Wire: 65#,70#,80#,SWRH72A,SWRH82A (C:0.60%~0.90%, high elasticity for spring & steel rope production)
Chemical Composition (wt%)
C:0.10~0.90; Mn:0.30~1.00; Si:0.10~0.35; S≤0.040%, P≤0.040%. Strict impurity control avoids wire cracking.
3. Product Classification (in accordance with GB/T341-2008)
By Diameter
| Category | Wire Diameter(mm) | Application |
|---|---|---|
| Ultra-fine Wire | ＜0.10 | Precision springs, instrument spare parts |
| Fine Wire | 0.10~1.50 | Welded mesh, binding wire, nail production |
| Medium Wire | 1.50~6.00 | Construction tying wire, fencing, spring raw material |
| Heavy Wire | 6.00~12.00 | Prestressed steel wire, core wire for wire rope |
| Extra Heavy Wire | ＞12.00 | Mechanical stay cable, precast concrete component |
By Surface Treatment
Black Annealed Wire: Annealed after cold drawing without coating, cost-effective for indoor binding, nail making & mesh weaving.
Hot-dip Galvanized Wire: Heavy zinc coating (60~250g/㎡), outstanding acid & alkali resistance with service life 20~30 years, ideal for outdoor fencing, orchard and hydraulic engineering.
Electro-galvanized Wire: Thin bright zinc layer for indoor hardware, handicrafts and wire mesh.
Copper-coated / PVC Coated Wire: Good conductivity or chemical resistance for cable, breeding net and offshore facilities.
By Tensile Strength Grade
Low strength:＜390MPa; Medium strength:390~1225MPa; High strength:1225~1960MPa; Extra-high strength:＞1960MPa for spring & prestressed purpose.
4. Production Flow
Raw wire rod incoming → descaling by pickling → phosphating for lubrication → multi-pass cold drawing → spheroidizing / annealing → galvanizing or PVC coating → coiling / fixed-length cutting → finished inspection → packing & warehousing.
5. Mechanical Properties
Tensile Strength: Low-carbon:350~650MPa; Medium-carbon:700~1200MPa; High-carbon:1300~2300MPa
Elongation: Soft annealed wire ≥18% (no crack after repeated bending); Hard-drawn wire ≥5% to guarantee toughness.
Torsion & bending performance meets national standard to satisfy weaving and spring forming.
6. Application Range
Construction Industry
Steel bar binding wire, welded mesh for floor heating, plaster mesh, prestressed concrete wire, bridge reinforcement and subgrade protection mesh (Q195/Q235 black wire & galvanized wire).
Hardware Manufacturing
Steel nails, screws, rivets, welding electrode, various mechanical springs, wire rope, bicycle spokes and stamping parts (medium & high carbon wire).
Agriculture & Gardening
Grape trellis wire, livestock fencing, greenhouse binding wire (hot-dip galvanized anti-rust wire).
Electric Power & Telecommunication
Steel core for aluminum cable, overhead ground wire, cable shielding wire and lightning conductor (galvanized or aluminum-clad steel wire).
Rubber Industry
Tire cord, high-pressure hose reinforcement wire and conveyor belt skeleton (copper-coated high carbon wire).
7. Packing, Delivery & Shipment Term
Packing: Standard coil packing (80~100kg per coil), spool packing or woven bag with pallet support; customized package acceptable.
Lead Time: In-stock goods loaded within 5~7 working days; customized special specification 7~12 working days. Goods shipped directly from Liaocheng warehouse or Tianjin Port.
Execution Standard: GB/T341, GB/T4357, GB/T5223; ASTM, JIS, EN available as per buyer’s requirement. Original mill test certificate (MTC) provided, third-party inspection acceptable.
8. Product Advantages
Premium raw wire rod with strict S & P control to reduce wire breakage rate.
Automatic drawing production, diameter tolerance ±0.02mm with precise dimension.
Strong adhesive zinc coating with qualified salt spray test for superior outdoor anti-corrosion performance.
Customizable on wire diameter, zinc coating weight, hardness and fixed cutting length.
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