Why 150 G corrugated roofing sheet metal is the first choice? Uncompromising corrosion resistance of

Author: Zhitui Global
Unique Advantages: why 150 PPZAM roofing board is superior to competitors

The main selling point of 150g corrugated roof metal plate is its corrosion resistance, which is improved by its composition of PPZAM galvanized steel. The following are its main advantages, which are supported by verified data.

1. Unrivaled Corrosion Resistance (Data-Backed)

Traditional roof materials often fail prematurely due to rust and corrosion, especially in humid, coastal or agricultural environments. 150 grams of PPZAM paper solved the problem.

  • Neutral salt spray test performance: According to data of China Iron and Steel Industry Association (CISA, 2024), the formation time of red rust of PPZAM coating is 50% longer than that of aluminum-zinc coatings with the same thickness on average. For example, in the neutral salt spray test, the 120 g/my PPZAM coating can resist red rust for more than 3,000+hours hours, while the aluminum-zinc coating can resist red rust for 2000 hours.
  • Excellent coating durability: the corrosion resistance of PPZAM is 10-20 times that of hot-dip galvanized steel sheet and 5-8 times that of hot-dip galvanized -5% aluminum alloy sheet (CISA, 2024). This means that 150 grams of PPZAM sheet can withstand decades of harsh conditions, such as exposure to agricultural chemical, salty air along the coast or deicing salt on expressways.
  • Self-healing characteristics: Magnesium in the PPZAM coating reacts with water to form a protective hydroxide layer, which "self-heals" slight scratches and prevents undercut corrosion.
2. Lightweight Yet High Strength

At 0.30 mm thick, 150 g corrugated sheets are lightweight (≈ 2.4 kg/my), reducing structural load on buildings. However, the corrugated design and galvanized steel core provide impressive strength: they can withstand wind speeds of up to 120 km/h and snow loads of 0.5 kN/me, making them suitable for both low-rise structures and long-span structures (e.g. Warehouses and greenhouses).

3. Cross-sectoral flexibility

According to the manufacturer’s regulations, 150 grams of PPZAM roof board is used in.

  • Civil buildings (roofs of houses, garages, sheds).
  • Agriculture and animal husbandry (greenhouses, livestock sheds and aquaculture facilities).
  • Roads and railways (noise barriers, guardrail coverings, tunnel linings).
  • Industrial facilities (factory roofs, workshop cover, equipment shell).
  • Automobile parts (truck body panels, trailer roof).
  • Building materials (prefabricated building elements, modular structures).
4. Cost-Effective & Low Maintenance

Although the initial cost of PPZAM galvanized steel is slightly higher than that of traditional galvanized steel, its extended service life (25-30 years, while pure zinc coatings is 10-15 years) reduces long-term replacement and maintenance costs. The corrosion resistance of the coating eliminates the need for frequent repainting or antirust treatment.

Comparison chart: Corrosion resistance of different coating typesCoating TypeNeutral Salt Spray Red Rust TimeCorrosion Resistance (vs. Hot dip pure zinc)150G PPZAM (Zn-Al-Mg)≥ 3,000 hours10–20 xHot dip aluminizing zinc (55% Al-Zn)≈2000 hours3-5 xHot dip pure zinc≈300-500 hours1 xHot dip galvanizing -5% aluminum≈600-800 hours2-3 x

Note: According to ASTM B 117 standards, the coating weight was 120 g/m².

Step-by-Step Guide: Choosing & Installing 150 G Corrugated Roofing Sheets

In order to give full play to the performance of 150 G PPZAM galvanized steel sheet, please follow the following professional steps.

Step 1: define Application requirements
  • Evaluate the environment (e.g., Coastal areas require higher corrosion resistance → 275 g/my coating weight is selected).
  • calculate structural load (snow, wind) to confirm 150 g thickness is sufficient (consult a structural engineer for large-span buildings).
Step 2: Verify Galvanized Steel Coating Quality
  • Check the coating weight certificate (to ensure that the standards of 120 is met).
  • Check whether the coating coverage is uniform (no exposed steel points or uneven thickness).
Step 3: Select the Right Corrugation Profile
  • Trapezoidal ripple: Ideal choice for industrial roofs (superior runoff).
  • Sinusoidal ripple: more suitable for residential buildings (aesthetic attraction+wind resistance).
Step 4: professional Installation
  1. Prepare the roof frame (wooden purlins or steel purlins with an interval of 600 -800 mm).
  2. Spread a 150-gram sheet, overlapping 100 mm to 150 mm (to prevent water leakage).

3. Fasten with stainless steel screws (matching the galvanized steel to avoid galvanic corrosion).

4. Seal the overlapping parts and edges with weather-resistant silicone (enhance corrosion resistance).

Step 5: Daily maintenance
  • Inspect annually for scratches or damage (touch up with spam – compatible paint if needed).
  • Remove debris (leaves, dust) to keep water loss and prevent coating from degradation.
Conclusion: why 150 G PPZAM corrugated roofing sheet metal is worth choosing

For projects requiring long-term durability, versatility and uncompromising corrosion resistance, 150 grams of corrugated roof metal plate (PPZAM galvanized steel) is the answer. Supported by CISA and AGA data, its Zn-Al-Mg coating is superior to traditional zinc plating and Al-Zn substitutes, providing 10-20 times corrosion resistance and 25-30 years service life. Whether you’re building a warehouse, greenhouse, residential roof, or highway structure, 150 G PPZAM sheets balance strength, lightweight design, and cost-effectiveness—all while meeting the rigorous demands of diverse industries.