Your One-Stop Wire Mesh Fence Supplier | POLYMETAL
Black bitumen coated Y star picket from POLYMETAL is a heavy-duty rural and security fence post designed for AS/NZS-style applications where strength, corrosion resistance and fast installation are essential. With a cold-rolled Y-shaped profile, ribbed edges and factory-punched holes, these posts give strong mechanical grip in the ground and provide a clear anchor line for wire mesh, barbed wire and plain wire. POLYMETAL focuses on key weight classes of 1.58 kg/meter, 1.90 kg/meter and 2.04 kg/meter up to a maximum length of 3.0 m, turning a simple post into a long-term safety and profit asset when specified correctly and installed following clear guidelines such as the Garrison Fence Installation Instructions.
Key specification snapshot – black bitumen coated Y star picket
- Product: black bitumen star picket, Y post
- Kinds: 1.58kg/meter, 1.90kg/meter, 2.04kg/meter
- Finish: black bitumen or HDG
- Packing: 10pcs/bundle, then 400pcs/pallet or customized
Length, weight and hole pattern – Australia & New Zealand overview
| Length (m) | Typical weight options (kg/m) | Holes – Australia (approx.) | Holes – New Zealand (approx.) | Typical applications |
| 0.45 | 1.35 / 1.58 | 2 | – | Garden edging, markers |
| 0.60 | 1.35 / 1.58 | 3 | – | Light garden / tree guards |
| 0.90 | 1.35 / 1.58 / 1.86 | 5 | – | Low stock fences, temporary barriers |
| 1.35 | 1.58 / 1.86 / 1.90 | 11 | 7 | Standard rural fences, internal paddock lines |
| 1.50 | 1.58 / 1.86 / 1.90 / 2.04 | 14 | 7 | General farm fencing, boundary lines |
| 1.65 | 1.86 / 1.90 / 2.04 | 14 | 7 | Higher stock fences, roadside fencing |
| 1.80 | 1.86 / 1.90 / 2.04 / 2.40–2.50 | 14 | 8 | Heavy rural, highway & security fencing |
| 2.10 | 1.90 / 2.04 / 2.40–2.50 | 7 | – | Extra-high security or soft ground |
| 2.40 | 2.04 / 2.40–2.50 | 7 | – | High security, steep / coastal sites |
| 2.70 | 2.04 / 2.40–2.50 | Supplier specific | Supplier specific | Special projects, high wind areas |
| 3.00 | 2.04 / 2.40–2.50 | Supplier specific | Supplier specific | Very tall fences, deep embedment |
Section profile and material data – black bitumen coated Y star picket
| Item | Specification / Range |
| Section type | Y-shaped / star picket profile (3-rib) |
| Base steel grade | Q235 or equivalent carbon steel, often rail grade |
| Nominal web thickness | Approx. 2.0 – 2.5 mm (heavier options available) |
| Rib / barb design | Three raised ribs for soil grip and anti-twist |
| Tensile behaviour | High-strength cold-rolled Y section |
| Surface finish options | Black bitumen, hot-dip galvanized, electric / pre-galvanized, bare |
| Bundle composition | Grouped by length & weight class |
| Typical bundle size | 50 / 100 / 200 pcs per bundle (depending on length / weight) |
| Securing method | Steel or heavy-duty plastic strapping |
| Marking | Length, kg/m, finish, PCS/MT on tags or labels |
15+ critical risks, details and warnings about black bitumen coated Y star picket
Before you choose any black bitumen coated Y star picket, you must understand the hidden risk pattern behind weight data, coating details and hole layouts. The following facts, truths and warnings show how a strong-looking post can become a serious threat to your fence budget if you ignore the technical profile.
Risk 1 – The hidden truth of weight per meter
The first critical detail is the kg/m value. Confusing 1.58 kg/m with 2.04 kg/m is not a small mistake; it is a structural fault. Lighter posts bend, twist and fail earlier under wind, stock pressure and wire tension, creating a long-term cost pattern of replacement and repair instead of a stable asset.
Danger 2 – The illusion that all black bitumen star pickets are equal
A dangerous myth is that every black bitumen coated Y star picket is the same as long as the colour and shape look similar. This illusion hides differences in steel grade, web thickness, rib depth and coating thickness. Believing this fantasy opens a loophole for failure, rust and loss that only appears years later.
Problem 3 – Misreading hole patterns and fencing layout
Hole count is not cosmetic info; it is a key design element. Choosing a length with the wrong holes for your mesh and wire layout forces on-site drilling, which breaks the coating and creates defects that invite corrosion. This problem quickly turns into a chain of mistakes, weak spots and unexpected damage.
Trap 4 – Overlooking the angle and depth of the Y ribs
The Y ribs are designed to grip the soil and resist rotation. A shallow rib or poorly formed profile is a structural weakness that lets posts twist under wire load. This trap destroys fence alignment and increases maintenance, even if the nominal kg/m value looks correct.
Pitfall 5 – Treating black bitumen as a simple colour, not a protection system
Black bitumen coating is a functional protection layer, not just a decorative feature. A thin, low-quality film cracks and peels, exposing bare steel to moisture. This pitfall creates a corrosion trend that starts as tiny blisters and ends in serious rust, shortening the life of your POLYMETAL fence line.
Downside 6 – Ignoring the difference between bitumen and HDG
Bitumen and hot-dip galvanized (HDG) finishes behave differently. Using black bitumen coated Y star pickets in highly corrosive coastal or industrial zones without considering HDG options is a serious downside. The wrong choice accelerates coating failure and drives up long-term maintenance cost and loss.
Weakness 7 – No clear checklist for length selection
Each length from 0.45 m to 3.0 m has a specific application angle. Using short posts in soft or sloping ground, or in high-stock-pressure zones, creates a hidden weakness. Without a simple checklist linking length and embedment depth to soil and load, even the best product becomes a misfit.
Flaw 8 – Underestimating web thickness as a structural element
Nominal web thickness of around 2.0–2.5 mm is a core structural trait. If a supplier quietly cuts thickness to save steel, the flaw is almost invisible in a quick snapshot but clearly visible in bending and long-term fatigue. This error is one of the most costly defects in cheap copies.
Fault 9 – Poor bundle data and logistics info
PCS/MT and bundle size are more than warehouse data; they are vital signals for freight planning and storage layout. If bundle composition and labelling are unclear, handling mistakes, drops and hidden damage become common faults. The ninth point is where many buyers suffer direct financial loss.
Error 10 – No snapshot of life-cycle behaviour
Many buyers look only at upfront price and ignore the long-term overview: how often posts bend, how coatings age and how often wires must be retensioned. This error hides the real cost trend and turns a seemingly cheap fence into a silent crisis of repeated rework.
Defect 11 – Incomplete marking and traceability
A serious defect is missing or vague product marking. Without clear tags that show length, kg/m, finish and PCS/MT, quality control and warranty claims become guesswork. This gap leaves you exposed when something goes wrong, with no data trail to protect your position.
Gap 12 – No internal installation guide
Even a high-quality black bitumen coated Y star picket can fail if crews do not have a simple installation guide. Wrong spacing, shallow embedment and poor alignment create a systematic gap between design and reality. A basic manual or checklist converts this weakness into a strong pattern of consistent performance.
Warning 13 – Ignoring AS/NZS style expectations
Australia and New Zealand have established expectations and principles for rural fencing, highways and farm boundaries. Ignoring these standards in weight choice, length range and hole pattern is a clear warning sign. Non-conforming fences can become safety hazards and legal liabilities.
Threat 14 – Treating star pickets as disposable
Seeing star pickets as cheap consumables is a dangerous bias. This misbelief encourages buying the lowest grade and leads to a trend of breakage, rust and repeated replacement. POLYMETAL designs its black bitumen coated Y star picket as a durable infrastructure component, not a throwaway item.
Benefit 15 – Using POLYMETAL data as leverage for real profit
The positive side is that every specification—length, kg/m, hole pattern, coating type and bundle profile—can be turned into a powerful advantage. When you follow the data overview as a practical guide, you gain a measurable edge in fence life, safety and return on investment, instead of facing hidden waste and damage.
Packing – POLYMETAL black bitumen coated Y star picket
POLYMETAL black bitumen coated Y star pickets are packed to protect both steel and coating from impact and abrasion. Posts are stacked in straight, tight bundles grouped by length and weight class, typically 10 pcs per small bundle and around 400 pcs per pallet, or as customized. Steel or heavy-duty plastic strapping holds each bundle firmly so that star pickets cannot move, twist or collide during transport. Where required, plastic or cardboard layers are inserted at contact points to reduce friction and protect the bitumen or galvanized surface. Pallets are clearly marked with product profile, including length, kg/m, finish and PCS/MT, giving warehouse and site teams an instant profile of the shipment and allowing them to match stock quickly with related products such as temporary fence panels for sale.
Production process – black bitumen coated Y star picket
The production process for POLYMETAL black bitumen coated Y star picket starts with selecting Q235 or rail-grade carbon steel. Steel strip is cold-rolled into a precise three-rib Y section, with rib depth and web thickness controlled to match the target weight per meter. Bars are cut to standard lengths from 0.45 m up to 3.0 m, and hole patterns are punched according to Australian and New Zealand layouts. After forming and punching, each post is cleaned to remove scale, oil and contaminants, then passes through a coating line where black bitumen or hot-dip galvanizing is applied. For bitumen-coated versions, a controlled film thickness is built up to form a continuous sealing layer; for HDG versions, posts are immersed in molten zinc for full coverage. Coating adhesion, thickness and appearance are checked according to an internal checklist so that no obvious bug, defect or coating gap remains on the finished product.
Standards and compliance – POLYMETAL black bitumen coated Y star picket
POLYMETAL black bitumen coated Y star pickets are designed to align with commonly accepted AS/NZS-style expectations for rural fencing, highway fencing and farm boundary security. Lengths from 0.45 m to 3.0 m, combined with key weight classes of 1.58 kg/m, 1.90 kg/m and 2.04 kg/m, provide a practical range for garden edges through to heavy rural and roadside projects. Hole patterns and Y-section geometry are configured so that the data profile—length, hole count, section shape and coating type—can be mapped clearly against local rules, farm manuals and infrastructure checklists. By taking these standards, rules and principles seriously, POLYMETAL turns each line of black bitumen coated Y star picket into a dependable control measure instead of an uncertain visual gesture, giving fence owners a durable safety edge and long-term payoff.
