Premium Pulp Packing Silk - High-Tensile Galvanized Steel Strapping for Heavy-Duty Unitizing
Product Overview
Pulp Packing Silk is a specialized galvanized steel strapping rope engineered for securing bulk commodities like pulp bales, cotton, hay, and recycled materials. Manufactured from high-carbon steel wire rods (55-75# grade) with hot-dip zinc coating (45-80g/m²), it delivers unmatched tensile strength (900-1300MPa) and corrosion resistance for extreme transport and storage conditions. Compliant with ASTM A641, EN 10244-2, and JIS G 3547 standards, it replaces traditional chains and synthetic straps with 40% higher cost efficiency.
Technical Specifications & Performance Data
|
Parameter |
Our Product |
Industry Standard |
|
Wire Diameter |
1.80mm–3.20mm (±0.03mm) |
1.60mm–2.80mm (±0.05mm) |
|
Tensile Strength |
900-1300MPa (Customizable) |
700-1100MPa |
|
Elongation |
7%-12% (Controlled ductility) |
5%-10% |
|
Zinc Coating |
45-80g/m² (Class I-III available) |
20-60g/m² |
|
Coil Weight |
700-1100kg (Wooden spools + VCI paper) |
500-800kg |
|
Break Load |
3.5-12.5kN (Diameter dependent) |
2.5-9.0kN |
Key Advantages for Bulk Logistics
1. Superior Mechanical Performance
Impact Resistance: Withstands 50% higher shock loads than PP straps (per ISO 7594 testing)
Elastic Recovery: Maintains tension after 72hrs under load (≤5% relaxation vs. 15% for PET straps)
2. Corrosion & Weather Resistance
Salt Spray Test: 500+ hours white rust resistance (ASTM B117)
Temperature Range: -40°C to 150°C without brittleness or strength loss
3. Economic & Operational Benefits
Labor Efficiency: Auto-tensioning tools apply 800kg force in 3 seconds
Recyclability: 100% recyclable steel core with ISO 14001 certification
Application-Specific Solutions
|
Industry |
Recommended Specs |
Key Benefit |
|
Pulp & Paper |
2.8mm Ø / 80g/m² Zn / 1300MPa |
Penetrates bales without snapping |
|
Cotton Compression |
2.2mm Ø / 60g/m² Zn / 1000MPa |
Prevents fiber damage during tying |
|
Waste Recycling |
3.2mm Ø + PVC coating / 1100MPa |
Resists acid corrosion in MSW bales |
|
Hay Export |
2.0mm Ø / 45g/m² Zn / 900MPa |
Withstands ocean voyage humidity |
Quality Assurance Process
Material Selection:
55-75# steel rods
Spectrometer verification of carbon content (0.55%-0.75%)
Galvanizing Control:
445°C zinc bath with rare earth additives for coating adhesion
Eddy-current thickness testing every 200 meters
Mechanical Testing:
100% break load testing (Digital tensiometer recorded)
Torsion tests: ≥20 twists without fracture (EN 10218-2)
Packaging & Logistics
Standard: 700-1100kg wooden spools with steel reinforcement
Lead Time: 15 days for stock sizes, 25 days for customized orders
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