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Hot dip galvanized steel pipe for builders
Product Overview
Zhuozhan high-quality carbon steel pipes are designed for scaffolding, formwork support, and general structural construction. Manufactured from Q235, Q345, and Q355B grades, these pipes offer excellent yield strength (≥235–355 MPa) and superior load-bearing performance.
To ensure the long-term durability of our pipes, we offer a variety of surface treatments, including hot-dip galvanizing (zinc layer thickness ≥ 80–120 μm, providing rust protection for over 10 years), cold-dip galvanizing, and painting, giving you the flexibility to choose the best solution for your project environment.
Each pipe is manufactured under strict dimensional tolerances (outer diameter tolerance ≤ ±0.5 mm), ensuring smooth assembly with scaffolding systems such as loop, cup, and frame scaffolds. Our pipes have been proven to last 3–5 times longer than untreated pipe, helping to improve site safety while reducing overall maintenance costs.
Key Features & Benefits
High Strength & Safety
Yield Strength ≥ 235–355 MPa (Q235/Q345/Q355B)
Higher load-bearing capacity, reducing the risk of bending, deformation, or failure
Excellent corrosion resistance
Hot-dip galvanized zinc layer ≥ 80–120 μm
Rust-resistant life of over 10 years, suitable for outdoor and harsh environments
High-precision manufacturing
Outer diameter tolerance ≤ ±0.5 mm, wall thickness tolerance ≤ ±0.3 mm
Ensures perfect compatibility with clasp, cup, and portal scaffolding for smooth installation
Extremely long service life
Lifespan 3–5 times longer than ordinary black pipe
Can be reused multiple times, reducing total project costs
Compliant with international standards
Compliant with EN39, BS1139, JIS G3444, and GB/T 3091
Easy to export and declare, globally recognized
Flexible customization options
Optional lengths 1.0–6.0 m, wall thickness 2.5–4.0 mm
Supports OEM/ODM to meet diverse project needs
Cost-effective solution
Reduces replacement frequency and maintenance costs
Improves construction efficiency and project safety
Product parameters
|
Outer Diameter |
Wall Thickness |
Length |
Weight |
Zinc Coating |
Standard |
|
48.3 mm (1.5") |
1.5 mm |
6 m/ 19.7 ft |
2.2 kg/m |
≥200 g/m² (Hot-dip) |
BS1139/EN39 |
|
48.3 mm (1.5") |
2.0 mm |
6 m/ 19.7 ft |
2.7 kg/m |
≥200 g/m² (Hot-dip) |
BS1139/EN39 |
|
48.3 mm (1.5") |
2.5 mm |
6 m/ 19.7 ft |
3.4 kg/m |
≥200 g/m² (Hot-dip) |
BS1139/EN39 |
|
48.3 mm (1.5") |
3.2 mm |
6 m/ 19.7 ft |
4.2 kg/m |
≥200 g/m² (Hot-dip) |
BS1139/EN39 |
|
48.3 mm (1.5") |
4.0 mm |
6 m/ 19.7 ft |
5.1 kg/m |
≥200 g/m² (Hot-dip) |
BS1139/EN39 |
|
60.0 mm(2.36") |
2.0 mm |
6 m/ 19.7 ft |
3.4 kg/m |
≥200 g/m² (Hot-dip) |
EN10240/ASTM A53 |
|
60.0 mm(2.36") |
2.5 mm |
6 m/ 19.7 ft |
4.2 kg/m |
≥200 g/m² (Hot-dip) |
EN10240/ASTM A53 |
|
60.0 mm(2.36") |
3.2 mm |
6 m/ 19.7 ft |
5.3 kg/m |
≥200 g/m² (Hot-dip) |
EN10240/ASTM A53 |
|
Custom Size |
As request |
Up to 12 m |
As request |
120-600 g/m² |
ASTM /EN /JIS |
Why Choose Zhuozhan Steel Pipe?
Factory Direct
Lower costs and consistent quality—no middleman markups.
Strict Quality Control
Outer diameter, wall thickness, and galvanizing are 100% inspected before shipment.
Proven Durability
Hot-dip galvanized pipes with a zinc layer thickness of ≥80–120 μm offer rust protection for over 10 years.
Global Export Experience
Our products are certified to EN39, BS1139, and JIS G3444, serving over 50 countries.
Customization
Customized lengths, special wall thicknesses, and OEM/ODM packaging are available based on project requirements.
Fast Delivery
Adequate inventory ensures delivery within 15-25 days, even for bulk orders.
Professional Support
Our engineering team provides technical guidance and scaffolding solutions.
Construction Case Study
Building Case Study
Project Name: Nanjing Riverside Commercial Complex
Location: Nanjing, Jiangsu Province, China
Construction Period: July 2023 - May 2024
Products Used: Q355B hot-dip galvanized steel pipe (OD 48.3mm, wall thickness 3.5mm)
Project Overview:
Nanjing Riverside Commercial Complex is a 52-story mixed-use high-rise building integrating office, retail, and residential functions. Zhuozhan supplied over 6,800 galvanized steel pipes for scaffolding and formwork support.
Key Achievements:
18% increase in load-bearing efficiency – Stronger Q355B steel pipes allow for reduced support spacing.
35% reduction in maintenance costs – Durable hot-dip galvanized pipes minimize replacements during construction.
Improved worker safety – Precisely controlled OD and wall thickness ensured stable scaffolding connections.
Delivered 12 days ahead of schedule – Modular assembly and a reliable supply chain accelerated the construction schedule.
Customer Feedback:
"Zhuozhan Steel Pipe played a vital role in our high-rise project, ensuring its safety and speed. The product quality exceeded our expectations, and the timely delivery helped us complete the project ahead of schedule." - Site Director, Riverside ComplexFAQ
Q: What standards do your steel pipes meet?
A: Our steel pipes comply with international standards such as EN39, BS1139, JIS G3444, and GB/T 3091, ensuring smooth use and customs clearance in global markets.
Q: What is the difference between hot-dip galvanizing and cold-dip galvanizing?
A: Hot-dip galvanizing has a thicker zinc layer (≥80–120 μm), offers a rust-proof lifespan of over 10 years, and is suitable for outdoor and long-term projects. Cold-dip galvanizing has a thinner zinc layer (10–30 μm), is more economical, and is suitable for indoor or short-term use.
Q: Can custom lengths and wall thicknesses be provided?
A: Yes, we can cut pipes from 1.0–6.0 m in length. We can also customize wall thicknesses and special specifications based on project drawings to meet diverse project requirements.
Q: How do you guarantee product quality?
A: Each batch of steel pipe undergoes chemical composition testing, mechanical property testing, dimensional tolerance testing, and surface inspection. Only after 100% quality inspection is passed can it be shipped.
Q: What is the lead time?
A: Standard specifications are in stock and can be shipped within 3–7 days. Large-volume custom orders typically take 15–25 days to deliver.
Q: Do you provide samples?
A: Yes, we can provide samples for customer testing. Sample fees are refundable in some regions.