Wire Rod Coil
Tianjin Shunchen Industrial is a professional Chinese manufacturer and supplier of wire rod coils. Adopting high-speed continuous hot rolling and online controlled cooling processes, our wire rod coils feature uniform grain structure, stable mechanical properties and excellent drawing/welding performance, solving the pain points of unstable tensile strength, easy cracking during deep drawing, inconsistent batch quality and high processing scrap rate for steel wire, fastener, construction reinforcement and metal product industries. Welcome customers to send inquiries for free samples and competitive quotations.
Tianjin Shunchen Industrial is a leading steel material manufacturer with 12 years of export experience, specializing in carbon steel and alloy wire rod coils. Our Tianjin production base is equipped with 2 full-automatic high-speed wire rod rolling lines and a national-level material testing laboratory, focusing on R&D and production of wire rod coils matched for construction engineering, fastener manufacturing, metal wire processing and mechanical parts production.
Different from ordinary low-precision wire rods with uneven internal grain, our wire rod coils adopt precise converter smelting + continuous casting billet control, matched with segmented online rapid cooling technology to form uniform fine grain structure. Our QC supervisor with 11 years of wire rod inspection experience carries out full-process tracking inspection for each batch, ensuring element composition deviation ≤0.02% and tensile strength fluctuation range ≤30MPa. All products comply with GB, ASTM, EN and JIS standards, and can provide complete mill test certificates (MTC EN 10204 3.1) and third-party SGS inspection reports.
Real-world Performance Testing
1. Tensile & Elongation Mechanical Test (Third-party SGS Test)
Test Standard: ASTM A510, GB/T 228-2021 Metal Tensile Test
Test Conditions: Room temperature standard stretching test
Test Samples:
Ordinary low-grade wire rod coil Q195
Standard Q235 wire rod coil
High-quality SAE1008 wire rod coil
Key Findings:
Q195 ordinary wire rod: Tensile strength 320MPa, elongation 22%, frequent cracking during thin wire drawing
Q235 wire rod: Tensile strength 380MPa, elongation 28%, drawing scrap rate reduced by 65% vs Q195
SAE1008 high-quality wire rod: Tensile strength 410MPa, elongation 35%, deep drawing without cracking, scrap rate reduced by 82% vs Q195
2. Twist & Cold Bending Fatigue Verification
Tested under standard cold processing conditions, core performance indicators as follows:
Q195: Repeated twist times ≥12 times, cold bending crack threshold R=2.5d
Q235: Repeated twist times ≥18 times, cold bending crack threshold R=1.5d
SAE1008: Repeated twist times ≥25 times, cold bending crack threshold R=1.0d
Stable internal grain eliminates brittle fracture during multi-pass drawing, bending and cold heading processing.
3. Decarburization Layer Thickness Test
Test Standard: GB/T 224 Decarburization Layer Detection Method
Test Results:
Ordinary wire rod: Total decarburization layer thickness 0.08–0.12mm
Our controlled cooling wire rod: Total decarburization layer thickness ≤0.03mm
Effectively avoid surface softening, ensure finished fastener hardness consistency.
Real-world User Scenarios & Verified Cases
Case 1: Construction Steel Wire Mesh Project (Vietnam Construction Materials Co., Ltd.)
Problem: Original ordinary wire rod had unstable elongation, a large number of broken wires during wire drawing, low production efficiency, frequent shutdown replacement of raw materials, increasing production cost.
Solution: Adopt Q235 wire rod coil, specification Φ6.5mm, online controlled cooling process to improve plasticity.
Result: Wire breaking rate dropped from 12% to 1.3%, daily drawing output increased by 40%, service life of drawing die extended twice. Annual purchase volume reaches 1300 tons, stable cooperation for 7 consecutive years.
Case 2: Standard Fastener Cold Heading Production Project (Zhejiang Hardware Manufacturing Co., Ltd.)
Industry: Fastener manufacturing
Problem: Low-quality wire rod with thick decarburization layer leads to unqualified bolt hardness after heat treatment, product rejection rate up to 9%.
Solution: Adopt SAE1008 wire rod coil Φ5.5mm, strictly control decarburization layer and sulfur-phosphorus impurity content.
Result: Finished bolt qualification rate increased to 99.2%, rejection rate reduced by 88%, cutting annual loss of defective products by more than 2.6 million RMB.
Case 3: Building Reinforcement Welding Processing Project (Domestic Construction Group)
Industry: Construction engineering matching materials
Problem: Wire rod with unstable carbon content leads to welding spatter, poor weld joint strength, failing engineering acceptance inspection.
Solution: HRB400B low-alloy wire rod coil Φ8/10mm, precise carbon and manganese composition control.
Result: Welding forming smooth, tensile strength of welded joints meets national standard, one-time pass of engineering acceptance, designated wire rod supplier for all group construction projects.
Authentic Customer Reviews
"Our wire drawing workshop relies heavily on stable plasticity of wire rod. Shunchen’s Q235 wire rod greatly reduces wire breakage, production efficiency improved significantly, batch quality is always consistent."
—— John Pham, Production Manager, Vietnam Construction Materials Co., Ltd.
"We produce high-strength bolts in large quantities. The thin decarburization layer of their SAE1008 wire rod solves our long-standing hardness unqualified problem, technical support is timely and professional."
—— Wang Tao, Technical Director, Zhejiang Hardware Manufacturing Co., Ltd.
"Construction projects have strict standards for welding performance. Their rebar wire rod has stable chemical composition, smooth welding effect, complete inspection documents, and we have cooperated stably for many years."
—— Chen Wei, Procurement Director, Domestic Construction Group
Verified Product Parameters
(1) General Execution Standards
| Standard Type | Standard Number | Applicable Regions & Industries |
| Chinese Standard | GB/T 14981-2021, GB/T 701-2008 | China, Southeast Asia |
| American Standard | ASTM A510M, SAE J403 (SAE1008/1010) | North America, Middle East |
| European Standard | EN 10016, C4D / C6D | Europe, Africa |
| Japanese Standard | JIS G3505, SWRM8 / SWRM10 | Asia, Japan |
(2) Core Technical Parameters
| Parameter Category | Specific Indicators |
| Material Grades | Q195, Q235, SAE1008, SAE1010, HRB400B, C4D, C6D |
| Nominal Diameter | 5.5mm, 6.0mm, 6.5mm, 8mm, 10mm, 12mm (custom small sizes available) |
| Coil Weight | 1.8–2.5 tons per coil, customized compact coil |
| Diameter Tolerance | ±0.10mm, Ovality ≤0.12mm |
| Surface Condition | No rust scale, no cracks, no burrs, uniform oxide skin |
| Cooling Process | Natural cooling / online controlled rapid cooling |
| Post-processing | Pickling, phosphating, drawing, cold heading, welding applicable |
(3) Chemical Composition (wt%)
| Material | C | Si | Mn | P | S |
| Q195 | 0.06–0.12 | ≤0.30 | 0.25–0.50 | ≤0.040 | ≤0.040 |
| Q235 | 0.12–0.22 | ≤0.35 | 0.30–0.65 | ≤0.045 | ≤0.045 |
| SAE1008 | 0.06–0.10 | ≤0.35 | 0.30–0.50 | ≤0.030 | ≤0.030 |
(4) Mechanical Properties
| Material | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Twist Times |
| Q195 | 315–390 | ≥195 | ≥22 | ≥12 |
| Q235 | 375–460 | ≥235 | ≥28 | ≥18 |
| SAE1008 | 380–440 | ≥240 | ≥35 | ≥25 |
Core Advantages
1. Authentic Test Data, Fully Traceable: All tensile, twist, decarburization test data come from SGS third-party labs and long-term factory processing verification, full inspection reports provided for customer acceptance.
2. Excellent Deep Processing Performance: Fine uniform grain, low decarburization layer, strong plasticity, low breakage rate during drawing, cold heading and welding, reduce customer production loss.
3. Precise Smelting & Rolling Control: Strict element content control, small diameter tolerance and ovality, neat coil forming, easy to uncoil and process.
4. Multi-Grade Customization Support: Low carbon drawing grade, construction rebar grade, fastener cold heading grade optional, adjust cooling process according to customer processing technology.
5. Complete Qualifications & Stable Supply: ISO9001:2015 certified, full set of export customs clearance and factory inspection documents; large spot inventory for fast delivery.
Suitable For
Wire processing industry: Galvanized wire, binding wire, welding wire, steel wire mesh, spring wire
Fastener manufacturing: Screws, bolts, nuts, rivets, cold heading standard parts
Construction engineering: Reinforcement wire mesh, building binding wire, foundation welding parts
Hardware products: Nails, steel staples, metal craft parts, mesh fence raw materials
Agriculture & packaging: Agricultural wire, packaging tying wire, breeding net wire
Mechanical accessories: Small shaft blanks, cold forged mechanical parts
Why Choose Tianjin Shunchen?
Looking for stable-quality wire rod coils for wire drawing, fastener and construction processing? Choose Tianjin Shunchen Industrial, a professional wire rod manufacturer with 12 years export experience, products verified by global downstream processing factories.
We maintain 3,500 tons standard size wire rod spot inventory all year round, supporting delivery within 3–7 days. Our professional technical team can recommend material grade and cooling process scheme according to your drawing, cold heading or welding requirements. Factory direct sales without intermediate dealers, competitive unit price and stable batch consistency. Contact us now to get free samples and detailed quotations!
Real Product & Shipment Gallery
Production & Quality Inspection
Fully automatic high-speed wire rod rolling production line
Online diameter & ovality detector (100% coil sampling inspection)
Universal tensile twisting testing machine
Metallographic microscope for decarburization layer inspection
Product Display
Φ6.5mm Q235 low carbon wire rod coil
Φ5.5mm SAE1008 cold heading wire rod coil
Φ10mm HRB400B construction rebar wire rod coil
Compact small weight customized wire rod coil
Shipment & Packaging
Standard export packaging: Waterproof plastic film + steel strapping fixed coil
Custom packaging with customer brand logo available
Container loading standard: 20ft container ≈22 tons; 40ft container ≈45 tons
Complete shipment documents: Bill of lading, commercial invoice, MTC, third-party SGS inspection report
Customer Application Scenarios
Vietnam steel wire mesh drawing project
Zhejiang fastener cold heading production project
Domestic construction steel bar welding project
Hardware nail manufacturing supporting project
Popular Tags
wire rod coil, steel wire rod, SAE1008 wire rod, Q235 wire rod, hot rolled wire rod, drawing wire rod, cold heading wire rod, China wire rod manufacturer
Related Categories
Rebar, Steel Coil, Flat Steel Plate, Checkered Plate, Galvanized Wire, Steel Bar, Square Bar, Angle Steel, Channel Steel
Professional China Shunchen manufacturer of high-efficiency Wire Rod Coil. Factory direct supply with OEM service. Advanced design and easy-maintainable quality for global projects.
