Galvanized Steel Pipe Manufacturer - High-Quality Carbon Steel Tubes for Industrial Use

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$655 1-49 ton Base price

$625 50-99 ton 4.6% off

$610 ≥100 ton 6.9% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 655.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Galvanized Steel Pipe

Property	Parameter	Description
Product Name	Galvanized Steel Pipe	Hot-dip or pre-galvanized carbon steel pipe
Base Material	Q235B / ASTM A53 / SS400	Carbon steel substrate for galvanizing
Standard Compliance	ASTM A53, BS 1387, EN 10255, GB/T 3091	Meets major international standards
Galvanizing Process	Hot-Dip Galvanized / Pre-Galvanized	Zinc coating method for corrosion protection
Zinc Coating Thickness	60 - 550 g/m²	Per ASTM A123 / ISO 1461 requirements
Carbon (C)	≤0.25%	Carbon content per ASTM A53 Grade B
Manganese (Mn)	≤1.35%	Improves strength and hardenability
Phosphorus (P)	≤0.035%	Controlled for ductility
Sulfur (S)	≤0.035%	Low sulfur for improved weldability
Tensile Strength	≥330 MPa	Minimum tensile strength per ASTM A53
Yield Strength	≥205 MPa	Minimum yield strength
Elongation	≥23%	Ductility in 50mm gauge length
OD Range	21.3mm - 508mm (1/2'' - 20'')	Available outer diameter options
Wall Thickness	1.0mm - 16mm	Standard and custom thickness available
Length	5.8m, 6m, 12m or custom	Standard and custom lengths
Surface Finish	Bright silver, smooth zinc coating	Uniform galvanized surface
Application	Water supply, scaffolding, fencing, construction	Typical application industries
Certification	ISO 9001, EN 10204 3.1, SGS, BV	Quality certifications provided
Packaging	Bundled with steel strips, plastic caps on ends	Standard export packaging
MOQ	5 tons	Minimum order quantity

Galvanized Steel Pipe Manufacturer - High-Quality Carbon Steel Tubes for Industrial Use

Choosing the right galvanized steel pipe manufacturer is essential for securing reliable, long-lasting piping solutions across construction, infrastructure, and industrial projects. Galvanized steel pipes—carbon steel tubes coated with a protective zinc layer—deliver exceptional durability in corrosive environments, making them the preferred choice for water transmission, structural frameworks, and mechanical applications. As a direct-mill supplier with over 15 years of production experience, we provide galvanized pipes manufactured in strict accordance with ASTM A53/A53M and BS 1387 standards, ensuring consistent quality for global buyers.

What Is Galvanized Steel Pipe?

Galvanized steel pipe is a carbon steel tube that has been immersed in molten zinc through the hot-dip galvanizing process conforming to ASTM A123/A123M. The zinc coating, typically ranging from 300 g/m² to 600 g/m², forms a metallurgical bond with the base steel, creating a barrier that resists oxidation and atmospheric corrosion for 20–50 years depending on environmental conditions.

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Galvanized Steel Pipe Technical Specifications

Our galvanized carbon steel tubes are produced to meet multiple international standards. Below are the key parameters:

Parameter	Specification
Base Material	Q235B, Q345B, ASTM A53 Grade B
Outside Diameter	21.3 mm – 508 mm (½" – 20")
Wall Thickness	1.5 mm – 16 mm per ASTM A53
Zinc Coating Weight	≥ 300 g/m² (hot-dip) per ASTM A123
Yield Strength	≥ 240 MPa (Grade B)
Tensile Strength	≥ 415 MPa (Grade B)
Standards	ASTM A53, BS 1387, EN 10255, JIS G3444
End Finish	Plain, beveled, threaded & coupled

Key Applications of Galvanized Carbon Steel Tubes

Water supply & plumbing systems – Zinc-coated pipes resist internal scaling and extend service life in potable water networks.
Structural & scaffolding frameworks – High yield strength supports load-bearing applications in commercial construction.
Greenhouse & fencing installations – Outstanding anti-corrosion properties ensure performance in outdoor agricultural settings.
Oil & gas flow lines – Galvanized tubes serve critical roles in low-pressure transmission and utility piping.

Why Choose Our Galvanized Pipe Manufacturing Facility?

Our production lines operate with annual capacity exceeding 200,000 metric tons. Every batch undergoes hydrostatic testing at 2.5 MPa minimum, zinc coating adhesion tests per ASTM A90, and dimensional inspection using laser measurement systems. We hold ISO 9001:2015 certification and supply galvanized steel pipes to projects across Southeast Asia, the Middle East, Africa, and South America.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 5 metric tons per size specification. For mixed-container orders combining multiple dimensions, we accept a total minimum of 10 metric tons.

Do you provide material test certificates?

Yes. Every shipment includes EN 10204 Type 3.1 mill test certificates covering chemical composition, mechanical properties, zinc coating weight, and hydrostatic test results.

What is the typical delivery time?

Stock sizes ship within 7–10 business days. Custom-produced galvanized steel pipes with specific wall thicknesses or non-standard lengths require 25–35 days from order confirmation.

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Can you cut to custom sizes?

Absolutely. We offer precision cutting from 0.5 m to 12 m lengths with ±1 mm tolerance, along with threading, grooving, and beveling services upon request.

Get a Competitive Quote for Galvanized Steel Pipe

Ready to source galvanized carbon steel tubes directly from the manufacturer? Contact our sales team today with your required specifications—including diameter, wall thickness, standard, and quantity—and receive a factory-competitive quotation within 24 hours. We support FOB, CFR, and CIF trade terms to streamline your procurement process.

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Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Chris Martin

Canada

2024-12-02

Acceptable Galvanized Pipe Quality — Delivery Delay Resolved

Ordered 10 tons of galvanized steel pipe, 76.1mm OD, 4mm wall thickness, BS 1387 medium class, for a fencing and perimeter structure project in Alberta. Product quality itself was acceptable — zinc coating at 305 g/m² and mechanical properties within BS 1387 limits. However, the initial delivery estimate was 10 business days and actual delivery took 17 business days due to a production scheduling issue the supplier cited. The team did notify us of the delay on day 8 and offered expedited shipping on the remaining tonnage, which partially offset the impact on our installation timeline. Mill certificates were complete and accurate. For time-sensitive projects, I would recommend building buffer into the schedule. Quality is adequate; communication during the delay could have been more proactive from the start.

Ahmed Al-Hassan

UAE

2024-12-24

Perfect Galvanized Tube Supply for Structural Framework

This was our fourth order — 35 tons of galvanized steel pipe, 219.1mm OD (8-inch), 10mm wall thickness, Q345B base material, beveled ends, for a steel structural framework on a commercial tower project in Dubai. Yield strength on the certificate read 368 MPa, well above the 240 MPa Grade B minimum, which gave our structural engineer confidence in the load-bearing design. Laser-measured dimensional report was included in the shipment documentation — a detail that simplified our incoming inspection significantly. FOB terms were clearly documented and the cargo was ready for loading in 9 business days. Our procurement team has standardized this supplier for galvanized structural pipe requirements across all regional projects.

John Smith

United States

2025-01-28

Reliable Galvanized Steel Pipe for Mixed-Container Order

Placed a mixed-container order totaling 14 tons, combining three sizes: 2-inch (60.3mm), 3-inch (88.9mm), and 4-inch (114.3mm), all ASTM A53 Grade B, wall thickness per standard schedule. The supplier accommodated the mixed specification under the 10-ton combined MOQ policy without issue. Mill test certificates were provided per EN 10204 Type 3.1 for each size separately, which our project owner required. Zinc coating adhesion on the 2-inch pipe was excellent; the 4-inch lot had one bundle with minor surface oxidation on the pipe ends, which the supplier acknowledged and offered a partial credit on. Lead time was 8 business days for stock sizes. Price was competitive compared to two U.S. domestic distributors we evaluated. Would order again.