Products Description
Our hot-dipped galvanized welded GI pipe is manufactured from high-quality Q235B carbon steel. The uniform zinc coating provides reliable anti-corrosion performance, strictly conforming to ASTM A53 and EN10255 standards. It is ideal for water lines, fences, greenhouses, and scaffolding. Various sizes are in stock, with custom cutting and quick delivery supported.
To meet the diverse requirements of global engineering and construction projects, we manufacture our pipes in strict accordance with international dimensional standards. Below are the standard specifications for our regular stock. For non-standard sizes or custom wall thicknesses, please refer to our technical team for tailored solutions.
|
Attribute |
Details / Specification |
|---|---|
|
Product Name |
Hot-Dip Galvanized Steel Pipe / GI Pipe |
|
Manufacturing Standard |
ASTM A53, ASTM A120, BS 1387, EN 10255, GB/T 3091, JIS G3444 |
|
Material Grade |
Q195, Q235, Q345, Grade A, Grade B, S235JR, S355JR |
|
Manufacturing Technique |
Hot Rolled, ERW (Electric Resistance Welded) |
|
Section Shape |
Round, Square, Rectangular |
|
Surface Treatment |
Hot-Dip Galvanized (Zinc coating: 200 g/m² – 600 g/m²) |
|
End Finish |
Plain end, Beveled end, Threaded with plastic caps or couplings |
|
Section Shape |
Circular / Round |
|
Main Application |
Water supply, Gas/Oil pipeline, Scaffolding, Structural framework, Fencing |
|
Quality Certificate |
Mill Test Certificate (EN 10204 3.1), ISO, SGS, BV |
Common Size Chart
|
NPS (Inch) |
Outer Diameter (mm) |
Wall Thickness (mm) |
Weight (kg/m) |
Standard Length |
|---|---|---|---|---|
|
1/2" |
21.3 mm |
2.75 mm |
1.26 kg |
6.0m / 12.0m |
|
3/4" |
26.7 mm |
2.75 mm |
1.63 kg |
6.0m / 12.0m |
|
1" |
33.4 mm |
3.25 mm |
2.42 kg |
6.0m / 12.0m |
|
2" |
60.3 mm |
3.75 mm |
5.22 kg |
6.0m / 12.0m |
|
4" |
114.3 mm |
4.00 mm |
10.85 kg |
6.0m / 12.0m |
|
6" |
168.3 mm |
4.50 mm |
18.18 kg |
6.0m / 12.0m |
|
8" |
219.1 mm |
6.00 mm |
31.52 kg |
6.0m / 12.0m |
|
12" |
323.9 mm |
6.00 mm |
47.03 kg |
6.0m / 12.0m |
Hot Dipped Galvanized Round Steel Pipe
Standard
GB/T 3091
Certification
CQC, RoHS
Protection Function
Anti-corrosion, short circuit protection, mechanical protection
Product Material
We adopt high-quality Q235B carbon steel, with uniform hot-dipped zinc coating. The material guarantees excellent rust resistance, long service life and stable mechanical performance for outdoor and wet environment applications.
Production process
Raw steel strip → ERW welding → Deburring → Hot-dip galvanizing → Surface treatment → Inspection → Cutting & Packaging. Strict procedure control ensures consistent zinc thickness and reliable welding quality.
Precautions for use
Reference temperature environment: 30°C Operating ambient temperature: (average daily temperature ≤ +35°C) -35~+70°C Please avoid long-term immersion in strong acid & alkali liquid. Check surface coating regularly before installation.
| Item | SpecificationItem | Application |
| Material | Q195 / Q235B Carbon Steel | Water supply pipeline, building structure |
| Standard | GB/T 3091, ASTM A53 | International engineering & trading projects |
| OD Range | 21.3mm ~ 219mm (1/2'' ~ 8'') | Greenhouse frame, fence post |
| Wall Thickness | 1.5mm ~ 4.0mm | Scaffolding, support frame |
| Zinc Coating | 80g/m² ~ 120g/m² | Outdoor usage, anti-rust requirement |
| End Type | Plain End / Threaded End | Plumbing, gas pipeline system |
| Length | 6m / Custom cut length | Construction site, prefabricated project |
Packaging & Shipment
Our galvanized steel pipes are professionally packed for safe ocean freight. Each bundle is securely fastened with steel strips, and both ends are sealed with waterproof plastic caps to prevent corrosion and physical damage.
We offer efficient logistics solutions, loading goods directly into standard containers or arranging break-bulk shipping for bulk orders. With our streamlined inspection and loading process, we guarantee prompt and on-time delivery.
👇 See our actual packaging and container loading photos below:
Certificates and Certifications
Why Choose Us? Quality You Can Trust.
In the steel industry, reliability and compliance are everything. We are committed to delivering products that meet the strictest international standards, which is why global buyers trust us for their critical projects. Our manufacturing processes are fully certified, and we strictly implement quality control at every stage-from raw material selection to final loading.
To ensure your peace of mind, we provide comprehensive Mill Test Certificates (MTC) with every shipment and fully welcome third-party inspections (such as SGS, BV, or TUV) before delivery. Below are our key certifications that guarantee the quality and safety of our steel products:
ISO 9001:2015 (Quality Management System)
API 5L / API 5CT (For Oil & Gas Pipeline Standards)
CE Certification (For European Market Compliance)
SGS / BV / TUV Inspection Reports (Third-Party Verification)
Mill Test Certificate (EN 10204 3.1) (Provided with every batch)
Frequently Asked Questions
Q:What is your Minimum Order Quantity (MOQ)?
A: For standard sizes in stock, the MOQ is usually 5-10 tons. For customized sizes or specific steel grades, the MOQ is typically 25 tons (one 20ft container).
Q:What can you buy from us?
A: Steel Plate, Steel Coil, Galvanized Pipe, Angle Bar, Galvanized Coil.
Q:Why should you buy from us not from other suppliers?
A: We are an integrated production and sales company, which makes the price we sellto you lower.There are no middlemen taking a cut. We can offer you a perfect quality guarantee. Our company passed the S0900. SGS international quality system authentication and set up perfect marketing system and customer service network.
Q:How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q：Can you provide free samples?
A: Yes, we can provide small free samples for quality testing. However, the freight cost for the samples is usually borne by the buyer.
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Ready to Start Your Project? Get a Free Quote Today!
Whether you need standard stock items or customized steel solutions, our professional sales team is ready to assist you. Contact us now for the latest price list, technical support, or a quick quotation.
WhatsApp / WeChat:+8613072013843
Email: tina@youchengkjsteel.com
Factory Address: Tianjin Youcheng Technology Co., Ltd.
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