Our factory in Anping, Hebei controls every stage of production — from drawing raw wire rod to welding, galvanising, PVC coating, quality inspection and container loading. No outsourcing means no quality hand-offs and full batch traceability.
Every Yishuo fence product begins with low-carbon steel wire rod sourced from certified Chinese steel mills. The wire rod arrives on coils at our factory and is drawn through a series of progressively smaller tungsten carbide dies to reach the target diameter with precise dimensional tolerance.
Wire drawing reduces diameter while simultaneously increasing tensile strength through work-hardening. The process runs continuously on 12 high-speed drawing machines, each capable of producing up to 3.5 tonnes per day of finished wire at diameters from 1.2 mm to 6.0 mm.
Every batch is tagged with a production identifier that links the finished wire back to its source coil and steel mill certificate — enabling full traceability to any finished panel.
| Raw material | Low-carbon steel wire rod, Q195 / Q235 |
| Diameter range | 1.2 mm — 6.0 mm finished wire |
| Tolerance | ±0.05 mm per EN 10218-2 |
| Tensile strength | 350 – 550 N/mm² (grade dependent) |
| Drawing machines | 12 × high-speed continuous draw lines |
| Daily output | Up to 42 tonnes of drawn wire |
| Traceability | Batch tag links wire rod to finished product |
Diameter measured by laser gauge every 500 m of drawn wire. Tensile strength tested on sample lengths per batch. Out-of-tolerance wire is rejected before coiling.
12 units · draws 2.5–6.0 mm wire from hot-rolled rod at 8–12 m/s line speed
6 units · draws 1.2–2.5 mm fine wire for chain link and agricultural products
In-line measurement every 500 m · auto-rejects out-of-tolerance batches before coiling
Drawn wire is fed into our CNC resistance welding machines which position transverse (horizontal) and longitudinal (vertical) wires at the programmed mesh spacing and fuse them at every intersection using an electric resistance pulse.
The weld is formed by passing high current through the wire cross-point under controlled pressure for a precise dwell time. This produces a true metallurgical bond — not a mechanical join — with weld strength typically exceeding the tensile strength of the wire itself.
Panel dimensions, mesh aperture and wire diameter are set via the machine control interface. Changeovers between standard and custom sizes take under 30 minutes, allowing us to switch between 358, welded mesh and custom apertures on the same line within the same production shift.
| Machine type | CNC automatic resistance welding |
| Number of machines | 8 welding lines |
| Wire diameter range | 2.0 mm — 6.0 mm |
| Panel size range | Up to 4.0 m wide × 3.0 m high |
| Mesh pitch accuracy | ±1.5 mm per EN 10223 |
| Weld current | 8,000 — 24,000 A (wire dependent) |
| Changeover time | < 30 min between standard specs |
| Output | Up to 6,000 m² panels per day |
Every 50th panel pulled for weld-pull test. Force applied to weld intersection must exceed wire tensile strength before fracture. Mesh pitch verified with calibrated gauge.
Welded panels are cleaned, fluxed and immersed in a bath of molten zinc at approximately 450 °C. The zinc bonds metallurgically with the steel surface, forming an alloy layer that is physically part of the steel — not a surface coating that can chip or peel.
Our HDG bath applies a minimum of 85 g/m² zinc per EN 10244-2 Class A — significantly heavier than electro-galvanised (8–12 g/m²) or pre-galvanised wire (30–40 g/m²). This produces a service life of 25–40 years outdoors depending on environment.
For coastal or marine applications we offer Class 4 HDG (≥ 140 g/m²) on request, combined with a PVC topcoat for maximum corrosion protection.
| Process type | Hot-dip galvanising (HDG) |
| Bath temperature | 445 – 455 °C |
| Zinc purity | ≥ 98.5% Zn (SHG grade) |
| Standard coating | ≥ 85 g/m² per EN 10244-2 Class A |
| Heavy coating option | ≥ 140 g/m² Class 4 (coastal spec) |
| Pre-treatment | Caustic clean → acid pickle → flux |
| Outdoor service life | 25–40 years (environment dependent) |
| Test method | XRF coating weight per EN ISO 1460 |
XRF coating weight measured on 3 random panels per bath load. Results recorded to Mill Test Certificate. Panels below minimum coating weight are re-dipped before proceeding.
Indoor use only. Thin coating chips at cut edges. Not suitable for external applications.
Wire galvanised before welding. Weld points lose coating during welding — reduced protection at intersections.
Full panel dipped after welding. Every surface — including weld intersections and cut edges — fully coated.
PVC coating is applied to HDG panels as an optional topcoat for applications requiring colour, additional corrosion protection or improved aesthetics. Our electrostatic powder coating line applies polyvinyl chloride powder to the pre-heated panel surface, which then cures in an oven at 200 °C to form a tough, uniform thermoplastic coating.
The PVC layer adds a minimum of 0.5 mm coating thickness on top of the existing zinc. For security and architectural applications a 1.0 mm coating is standard. The combination of HDG base + PVC topcoat gives a total corrosion protection system rated for 40+ years in most outdoor environments.
Standard colours (RAL 6005 moss green, RAL 9005 jet black, RAL 8017 brown, RAL 7016 anthracite, RAL 9010 white) are held in stock. Any RAL colour can be ordered for quantities of 500 m² or more.
| Process type | Electrostatic PVC powder coating |
| Curing temperature | 195 – 210 °C (oven curing) |
| Standard thickness | 0.5 mm — 1.0 mm (spec dependent) |
| Standard colours | RAL 6005 · 9005 · 8017 · 7016 · 9010 |
| Custom colour MOQ | 500 m² (any RAL) |
| Adhesion test | Cross-cut per ISO 2409 — Gt0 required |
| UV resistance | 1,000 h QUV accelerated weathering |
Every panel passes through a dedicated final inspection station before packing. Our QC team checks dimensional accuracy, weld integrity, coating uniformity and panel flatness against the purchase order specification. Results are recorded against the production batch number.
In addition to in-process checks at each production stage, we maintain a fully equipped testing laboratory for tensile testing, weld pull testing, zinc coating measurement and salt-spray corrosion testing. Batch test results are issued as a Mill Test Certificate with every shipment.
Laser micrometer every 500 m of drawn wire
Universal testing machine — sample per coil
Calibrated gauge — every panel post-welding
Force must exceed wire tensile strength — 1:50 panels
XRF measurement per EN ISO 1460 — 3 panels per bath load
Cross-cut ISO 2409 — Gt0 acceptance standard
Panel height, width and flatness — 100% of finished panels
Issued with every shipment — all test results recorded
Passed panels are stacked in bundles of 10–20 panels depending on size and weight, strapped with high-tensile steel banding, and wrapped in waterproof polypropylene (PP) film to protect the surface finish during transit.
Each bundle is marked with: item code, specification, quantity, gross weight, net weight and carton/bundle dimensions. Wire products are coiled, secured and wrapped on pallets for container loading.
Our loading team packs containers to maximise utilisation — typically achieving 95%+ container fill rate on standard product orders. A full photographic loading record is produced for every container, available to buyers on request.
| Panel bundle size | 10 – 20 panels per bundle |
| Bundle strapping | High-tensile steel banding |
| Outer wrap | Waterproof PP film |
| Wire products | Coiled and wrapped on pallets |
| Bundle marking | Item code · spec · qty · weight · dims |
| Container fill rate | ≥ 95% utilisation (standard products) |
| Loading photos | Available for every container |
Quality management system — covers all production stages, document control and customer feedback processes
European standard for zinc-coated steel wire. Minimum 85 g/m² Class A coating on all HDG products
European standard for welded wire mesh. Dimensional tolerances and weld strength requirements
Australian standard for temporary fencing. All temp fence panels for ANZ markets manufactured to this specification
A 500 × 500 mm production sample with Mill Test Certificate is the fastest way to verify our quality before you commit to a bulk order. Dispatch within 3–5 days.