Barbed wire remains one of the world's most effective physical security measures. However, standard uncoated galvanized wire inevitably falls victim to environmental oxidation, acid rain, and coastal salinity. As an industry-leading
The application of PVC coating protects the underlying steel core wire from harsh conditions, preventing rust and ensuring a operational lifespan exceeding 15 to 20 years in highly corrosive marine or industrial climates. Available in standard RAL colors—principally RAL 6005 (Forest Green), RAL 5015 (Sky Blue), and custom yellow/black options—our PVC-coated barbed wire functions seamlessly in both security containment and aesthetic architectural integration.
Our factory adheres strictly to global regulatory specifications such as ASTM F1665 (Standard Specification for Poly(vinyl chloride) Coated Steel Barbed Wire) and EN 10223-1. Below are our typical manufacturing standards:
| Core Wire Material | Core Dia. (mm) | Outer Dia. (mm) | Barb Spacing | Barb Length | Tensile Strength | Common Applications |
|---|---|---|---|---|---|---|
| Electro-Galvanized Steel | 1.60 - 2.00 | 2.20 - 3.00 | 3" - 5" / 7.5cm - 12.5cm | 15mm - 20mm | 350 - 550 MPa | Agricultural boundaries, livestock paddocks |
| Hot-Dip Galv. (Class 1) | 2.00 - 2.50 | 3.00 - 3.60 | 4" / 10.0cm | 15mm - 20mm | 400 - 600 MPa | Substations, rail corridors, perimeter fences |
| High-Tensile Carbon Steel | 2.20 - 2.80 | 3.20 - 4.00 | 3" / 7.5cm | 15mm - 22mm | 1000 - 1200 MPa | Military borders, high-security facilities |
| Stainless Steel (Grade 304/316) | 1.80 - 2.20 | 2.50 - 3.20 | 4" / 10.0cm | 15mm - 20mm | 600 - 800 MPa | Chemical storage sites, coastal military zones |
Sinsun Hardware operates a modern 30,000 sqm integrated manufacturing plant. This facility features dedicated drawing, heat treatment, PVC coating extrusion lines, and a massive 12,000 sqm smart warehouse capable of holding over 18,000 pallets.
We utilize German multi-station cold heading machinery combined with Taiwanese precision control units. This ensures consistency across wire diameters (±0.02mm) and maintains coating adhesion integrity during high-speed barb application.
We source raw steel coils directly from Xingtai Steel, a premium metallurgy firm in China. We then perform our own in-house spheroidizing annealing and drawing to secure highly flexible steel wire that will not snap under tension.
From our inception in 2006 as a small-scale specialized fastener plant in northern China, we have scaled our production capacity. Today, Sinsun is a global supplier. Review our journey of expansion:
Standard galvanized wire degrades rapidly when exposed to high-salinity air. Our Class B bonded PVC-coated wire features an impervious outer barrier that blocks chloride ions. This protection helps prevent under-film corrosion in coastal regions.
Agricultural users demand both animal containment and high visibility. The smooth PVC coating reduces the risk of serious hide injuries compared to rough galvanized wire, while the forest green (RAL 6005) finish coordinates with surrounding environments.
Substations, waste facilities, and chemical depots require long-lasting protection. High-tensile PVC-coated barbed wire provides strong resistance to physical tampering and cutting tools, while offering protection against chemical air emissions.
International procurement involves complex compliance standards. Sinsun Hardware ensures all PVC formulations are heavy-metal free and comply with RoHS/REACH regulations. This step prevents environmental contamination from plasticizer runoff. Additionally, our UV stabilization package prevents the PVC coating from cracking or chalking in high UV locations like the Middle East and South America.
Our logistics division manages clearance paperwork, providing transparent HS coding (typically 7313.00.00) and documentation verifying that our materials meet localized standard specifications. We also offer customized packing options—ranging from reinforced wooden pallets to polymer handles—to facilitate simple offloading at your warehouse or job site.
We guarantee a minimum PVC coating thickness of 0.38mm (Class A) or 0.25mm (Class B bonded), delivering consistent protection and excellent adhesion values.
Our wire samples undergo a continuous 1,000+ hour salt spray test (ASTM B117) to verify they will resist rust in coastal applications.
We supply custom labels, 3D retail packaging designs, and moisture-resistant shrink wraps to protect your wire during maritime transport.
As high-security perimeters adapt to changing requirements, the PVC-coated wire sector is experiencing three key industry shifts:
Modern projects are shifting from low-carbon mild steel to high-tensile carbon steel (up to 1200 MPa). High-tensile wire offers the same structural strength with a smaller core wire diameter, reducing shipping weights and cargo logistics costs.
Environmental policies are restricting standard phthalates. The industry is moving toward bio-based plasticizers that offer excellent flexibility at sub-zero temperatures (-30°C) without cracking.
Our factory combines a Zn-Al alloy (Galfan) layer with a top PVC jacket. This hybrid design provides dual-layer protection, ensuring the core wire remains protected even if the outer plastic jacket is cut or damaged.
Extruded PVC (Class A) is applied as a sleeve over the core wire. It is cost-efficient but can allow moisture to travel under the sleeve if cut. Bonded PVC (Class B) uses an adhesive primer to chemically bond the PVC directly to the galvanized wire. This prevents water ingress and under-film rust, making it ideal for high-salinity zones.
Every wire coil is wrapped in heavy-duty polyethylene woven film, packed with silica gel desiccants, and secured on treated wooden pallets. The entire pallet is then shrink-wrapped to block humid air during transit.
Yes. As an OEM factory, we manufacture barb spacing from 3 inches to 6 inches, in single or double twist styles. Common colors include RAL 6005 (Green), RAL 5015 (Blue), RAL 9005 (Black), and RAL 1021 (Yellow). Custom color matching is available for projects over 10 tons.
For coastal settings within 5km of the sea, we recommend using a hot-dip galvanized core wire (zinc weight above 240g/m²) combined with a Class B bonded PVC jacket, or a Grade 304 stainless steel core wire under the PVC coating.
Our standard MOQ for custom PVC-coated barbed wire runs is 5 metric tons per color/specification, which allows us to optimize our extrusion and twisting machinery for production efficiency.
We welcome international buyers to visit our facility in northern China. Clients can tour our wire drawing operations, annealing furnaces, polymer extrusion systems, and packaging lines to verify our quality standards in person.
For companies unable to travel, we provide high-definition video walkthroughs, raw material mill certificates, and third-party inspection reports (from SGS or Bureau Veritas) to confirm order compliance before loading.
