Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 1-inch galvanized steel pipe/tube in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
1-Inch Galvanized Steel Pipe (also known as 1" Galvanized Steel Tube) is a zinc-coated carbon steel pipe designed for superior corrosion resistance, durability, and long service life. The outer zinc coating, applied through hot-dip galvanizing or pre-galvanizing, protects the steel from rust, oxidation, and moisture damage.
Manufactured according to international standards such as ASTM A53 / ASTM A500 / BS1387 / EN10255 / JIS G3444, this product is widely used in plumbing systems, structural supports, water supply lines, greenhouses, scaffolding, and construction frameworks.
Our factory offers 1-inch galvanized pipes in both light, medium, and heavy thicknesses, available in plain, threaded, or coupled ends, ensuring perfect compatibility for global industrial and civil applications.
Main Keywords: 1-Inch Galvanized Steel Pipe, 1-Inch Galvanized Tube, Hot Dip Galvanized Pipe, Galvanized Steel Pipe Supplier, 1" GI Pipe Manufacturer, ASTM A53 Galvanized Steel Tube
Professional team
Our ISO-certified engineers and metallurgy experts ensure every 1-inch galvanized steel pipe meets rigorous ASTM/ASME standards, from zinc coating thickness to pressure tolerance validation.
7x24 hours
Product Specifications
| Standard | ASTM A53 / ASTM A500 / BS1387 / EN10255 / JIS G3444 |
|---|---|
| Nominal Size | 1 inch (DN25) |
| Outer Diameter (OD) | 33.4 mm |
| Wall Thickness | 2.3 – 4.5 mm (Light / Medium / Heavy) |
| Length | 6 m, 12 m, or customized |
| Surface Finish | Hot Dip Galvanized / Pre-Galvanized / Black |
| Zinc Coating | 40 – 600 g/m² |
| End Type | Plain End, Threaded & Coupled, Beveled End |
| Manufacturing Process | ERW (Electric Resistance Welded) or Seamless |
| Packing | In bundles with steel straps and plastic caps |
| Tolerances | According to ASTM / EN / JIS standards |
Chemical Composition (Typical %)
| Grade | C (max) | Mn (max) | P (max) | S (max) |
|---|---|---|---|---|
| Q195 | 0.12 | 0.50 | 0.04 | 0.04 |
| Q235 | 0.22 | 1.40 | 0.05 | 0.05 |
| Q345 | 0.20 | 1.60 | 0.035 | 0.035 |
| STK400 | 0.25 | 1.60 | 0.040 | 0.040 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Q195 | ≥195 | ≥315 | ≥33 |
| Q235 | ≥235 | ≥375 | ≥26 |
| Q345 | ≥345 | ≥470 | ≥21 |
| STK400 | ≥245 | ≥400 | ≥23 |
International Standard Size Chart (1" Nominal Pipe)
| Nominal Size (inch) | DN | Outer Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) | Type |
|---|---|---|---|---|---|
| 1" (Light) | DN25 | 33.4 | 2.3 | 2.28 | Light |
| 1" (Medium) | DN25 | 33.4 | 3.2 | 2.95 | Medium |
| 1" (Heavy) | DN25 | 33.4 | 4.0 | 3.58 | Heavy |
| 1" (Schedule 40) | DN25 | 33.4 | 3.38 | 2.33 | Standard |
| 1" (Schedule 80) | DN25 | 33.4 | 4.55 | 3.23 | Thick Wall |
Our Service Processes
Xi'an Dongmeng Steel Co.,Ltd,
Pre-sales Consultancy
1
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Confirmation of order
2
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Production
3
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Multi-Channel Shipping
4
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Confirmation of recei
5
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After-sale Services
6
Our hot-dip galvanized pipes undergo triple-stage quality control – material inspection, galvanizing process audits, and final pressure testing – backed by:
15+ years of industry-specific expertise.
Zero-defect warranty for corrosion resistance and structural integrity.
Custom documentation: Mill test reports (MTRs), compliance certificates, and origin tracing.
Why Choose Our 1-Inch Galvanized Steel Pipes?
✅ Superior Corrosion Resistance
Hot-dip galvanized coating ensures long-term protection against rust, moisture, and chemical exposure-perfect for outdoor installations, marine climates, or high-humidity environments.
✅ Uncompromising Strength
Schedule 40: Ideal for moderate-pressure systems (1,150+ psi rating).
Schedule 80: Built for heavy-duty industrial use (1,500+ psi rating).
Withstand impacts, abrasion, and extreme temperatures without compromising structural integrity.
✅ Versatile Applications
From water distribution and gas lines to scaffolding and agricultural equipment, our pipes adapt seamlessly to:
Construction: Fencing, handrails, structural supports.
Utilities: Waterworks, HVAC, fire suppression systems.
Industrial: Machinery, conveyor systems, LPG transport.
✅ Global Compliance & Certifications
Manufactured to meet ASTM, ISO, and ANSI standards, ensuring compatibility with international project specifications.
✅ Cost-Effective Longevity
Reduce replacement costs with a lifespan of 40+ years-minimal maintenance required even in harsh conditions.
Competitive Advantages for Your Business
🔧 Customizable Solutions: Available in threaded, welded, or pre-cut lengths to suit your needs.
📦 Bulk Order Optimization: Competitive pricing for large-scale procurement with flexible MOQs.
⏱️ Fast Global Shipping: Reliable logistics partners ensure on-time delivery to your site or warehouse.
the final view of project
Xi'an Dongmeng Steel Co.,Ltd,
Competitive Edge Over Alternatives
| Feature | Galvanized Steel | PVC | Copper |
|---|---|---|---|
| Strength | ⭐⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐ |
| Corrosion Resistance | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ |
| Cost Efficiency | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐ |
| Lifespan | ⭐⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐ |
Ideal for projects demanding rugged reliability without compromising budget!
Looking for a trusted 1-Inch Galvanized Steel Pipe supplier from China?
We provide factory-direct pricing, custom coating options, and third-party inspection for global buyers.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ (Frequently Asked Questions)
Q1: What is the actual outer diameter of a 1-inch galvanized steel pipe?
A1: The actual OD is 33.4 mm, as per international standards (ASTM/BS/JIS).
Q2: What's the difference between hot-dip and pre-galvanized 1-inch pipes?
A2: Hot-dip has thicker zinc coating (up to 600 g/m²) and longer lifespan; pre-galvanized is lighter and more economical for indoor use.
Q3: What pressure can a 1-inch galvanized pipe withstand?
A3: Depending on wall thickness, Schedule 40 can handle moderate water and air pressure; Schedule 80 handles higher industrial pressure applications.
Q4: Are 1-inch galvanized pipes suitable for potable (drinking) water?
A4: Yes, when produced with lead-free zinc coatings that meet health standards.
Q5: Can you supply both threaded and coupled types?
A5: Yes. We offer Plain End (PE), Threaded with Coupling (T&C), or Beveled Ends upon request.
Q6: What is the typical zinc coating thickness?
A6: Between 40–600 g/m², equivalent to 8–85 µm, depending on environment and standard.
Q7: What certifications are available?
A7: We provide ISO 9001, SGS, BV, TUV certifications, and EN10204 3.1 Mill Test Certificates with every batch.
Q8: How do you package 1-inch galvanized pipes for export?
A8: Pipes are bundled with steel strips, plastic-capped ends, and wrapped with waterproof fabric. Wooden pallets are optional.
Q9: What is the minimum order quantity (MOQ)?
A9: MOQ is usually 5 tons per size, but smaller trial orders are welcome for first cooperation.
Q10: What are the delivery terms and payment options?
A10: Delivery is 15–25 days after deposit, available under FOB, CIF, or CFR terms. Payment by T/T, L/C at sight is accepted.
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