BS EN AISI ASTM JIS DIN GB ERW Welded Galvanized Steel Pipe 6-150mm DN with 2.0-5.5mm Wall Thickness
Zhengde galvanized steel pipes are available in cold-galvanized and hot-dip galvanized variants, manufactured as round pipes or square/rectangular profiles. The hot-dip galvanizing process involves pickling to remove surface oxides, followed by cleaning with ammonium chloride or zinc chloride solutions, then immersion in the hot-dip coating tank. This method ensures uniform coating distribution, excellent adhesion, and extended service life.
| DN | Outer Diameter (mm) | OD Deviation | Standard Pipe | Thickened 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 | ±0.5mm | 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 | ±1% | 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 |
Galvanized round pipe is a versatile building material used for indoor/outdoor piping, electrical conduits, ventilation systems, and mechanical structures. Its corrosion resistance, durability, high strength, and ease of installation make it suitable for construction applications including plumbing, HVAC systems, and fire protection piping. In mechanical engineering, it serves as components for machinery, automotive parts, and steel structures. Furniture manufacturing utilizes these pipes for table frames, chairs, and bed structures.
Galvanized square tubes provide excellent corrosion protection for construction, structural engineering, electrical systems, public infrastructure, and automotive manufacturing. Specific applications include:
- Construction: Underground pipelines, building structures, and decorative elements
- Electrical: Power transmission lines, communication cables, and generator sets
- Machining: Machine tools, automotive components, and food processing equipment
- Public Services: Highway tunnels, landscaping projects, and public park installations
Our steel pipes undergo rigorous quality control procedures in compliance with national production standards. We maintain comprehensive quality certifications and production licenses. Each pipe is inspected for surface defects including cracks, bubbles, and proper identification markings. Regular maintenance and cleaning recommendations are provided to prevent rust and extend service life.
Strict adherence to production standards throughout manufacturing and inspection processes
Market-based pricing with volume discounts and competitive rates
Secure payment processing and financial protection for all customer transactions
Comprehensive customer service and technical support for all products
Shandong Zhengde Metal Manufacturing Co., Ltd. is an integrated enterprise specializing in hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper, and other metal products. With five production bases across Binzhou, Liaocheng, Wuxi, Tianjin, Jinan, and Tai'an, we operate over 100 production lines with 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Our products are exported to more than 50 countries worldwide.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.