ASTM A500 Galvanized Welded Pipe 30GSM-120GSM Zinc Coating Z275 Small Diameter 6-150mm for Construction and Industrial Use
Zhengde galvanized steel pipes are available in cold-galvanized and hot-dip galvanized variants, manufactured as round pipes or square/rectangular profiles. Hot-dip galvanizing involves pickling to remove surface oxides, followed by cleaning and immersion in molten zinc, resulting in uniform coating, strong adhesion, and extended service life.
Galvanized steel pipes feature a protective zinc layer that significantly enhances corrosion resistance and extends service life. These pipes are manufactured to ASTM A500 standards with various zinc coating weights including 30GSM, 60GSM, 120GSM and coating classes Z275, Z35, Z120.
| DN (mm) | Outer Diameter (mm) | Ordinary Steel Pipe | Thickened Steel Pipe | ||||
|---|---|---|---|---|---|---|---|
| Thickness (mm) | Welded Pipe (kg/m) | Galvanized Pipe (kg/m) | Thickness (mm) | Welded Pipe (kg/m) | Galvanized Pipe (kg/m) | ||
| 6 | 10.2 | 2.0 | 0.40 | 0.4256 | 2.5 | 0.47 | 0.50 |
| 8 | 13.5 | 2.3 | 0.62 | 0.64 | 2.75 | 0.73 | 0.75 |
| 10 | 17 | 2.3 | 0.82 | 0.84 | 2.75 | 0.97 | 1.00 |
| 15 | 21.3 | 2.8 | 1.26 | 1.30 | 3.25 | 1.45 | 1.49 |
| 20 | 26.8 | 2.8 | 1.63 | 1.68 | 3.50 | 2.01 | 2.07 |
| 25 | 33.5 | 3.3 | 2.42 | 2.49 | 4.00 | 2.91 | 3.00 |
| 32 | 42.3 | 3.3 | 3.13 | 3.22 | 4.00 | 3.78 | 3.89 |
| 40 | 48 | 3.5 | 3.84 | 3.96 | 4.25 | 4.58 | 4.72 |
| 50 | 60 | 3.5 | 4.88 | 5.03 | 4.50 | 6.16 | 6.34 |
| 65 | 75.5 | 3.8 | 6.64 | 6.84 | 4.50 | 7.88 | 8.12 |
| 80 | 88.5 | 4.0 | 8.34 | 8.59 | 4.75 | 9.81 | 10.10 |
| 100 | 114 | 4.0 | 10.85 | 11.18 | 5.00 | 13.44 | 13.84 |
| 125 | 140 | 4.5 | 15.04 | 15.49 | 5.50 | 18.24 | 18.79 |
| 150 | 165 | 4.5 | 17.81 | 18.34 | 5.50 | 21.63 | 22.28 |
- Fencing, greenhouse structures, and door pipes
- Low-pressure fluid transport for water, gas, and oil pipelines
- Indoor and outdoor building construction
- Scaffolding construction with cost-effective convenience
- Petroleum industry applications including oil well pipes and oil heaters
- Mine tunnel support structures and trestle piles
Commonly used for indoor/outdoor piping, electrical conduits, ventilation systems, and mechanical structures. Features corrosion resistance, high strength, and easy installation for construction, mechanical components, and furniture manufacturing.
Ideal for construction structures, electrical systems, machinery manufacturing, and public infrastructure. Used for underground pipelines, building frameworks, power line conduits, and automotive components.
All products undergo strict quality control according to national standards including ISO 9001 certification. Regular inspections ensure surface quality, proper identification, and extended service life through proper maintenance.
Quality First: Strict adherence to production standards and comprehensive inspection processes
Price Advantage: Competitive pricing based on current market conditions
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After-Sales Guarantee: Comprehensive customer support and problem resolution
Long-Term Cooperation: Sustainable partnerships through quality assurance and sincere service
Shandong Zhengde Metal Manufacturing Co., Ltd. operates five production bases with over 100 production lines, 4 certified laboratories, and exports to 50+ countries worldwide.
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