Galvanized Steel Tube - High-Quality Corrosion-Resistant Tubing for Industrial Use

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$755 1-49 ton Base price

$720 50-99 ton 4.6% off

$705 ≥100 ton 6.6% 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$ 755.00

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 Tube

Property	Parameter	Description
Product Name	Galvanized Steel Tube	Hot-dip or pre-galvanized carbon steel tube
Base Material	Q235B / ASTM A53 / SS400	Low-carbon steel substrate
Standard Compliance	ASTM A53, BS 1387, EN 10255, GB/T 3091	Meets major international standards
Galvanizing Method	Hot-Dip Galvanized / Pre-Galvanized	Zinc coating process options
Zinc Coating Thickness	60 - 550 g/m²	Per ASTM A123 / ISO 1461
Carbon (C)	≤0.25%	Carbon content for formability
Manganese (Mn)	≤1.20%	Improves strength and toughness
Phosphorus (P)	≤0.035%	Controlled for ductility
Sulfur (S)	≤0.035%	Low sulfur for 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 - 219.1mm (1/2'' - 8'')	Available outer diameter options
Wall Thickness	1.0mm - 10.0mm	Standard and custom thickness
Length	5.8m, 6m, 12m or custom	Standard and custom lengths
Surface Finish	Bright silver, smooth zinc coating	Uniform galvanized surface
Application	Construction, fencing, water supply, scaffolding	Typical application industries
Certification	EN 10204 3.1, ISO 9001, SGS	Quality certifications provided
Packaging	Bundled with steel strips, plastic caps on ends	Standard export packaging
MOQ	5 tons	Minimum order quantity

Galvanized Steel Tube - High-Quality Corrosion-Resistant Tubing for Industrial Use

Galvanized steel tube is a zinc-coated carbon steel tubular product engineered to deliver outstanding anti-corrosion properties and extended service life across demanding environments. Whether you operate in construction, agriculture, water conveyance, or general fabrication, this versatile tubing solution provides robust structural integrity at factory-competitive pricing. As a direct mill supplier, we offer a comprehensive range of galvanized steel tubes manufactured according to ASTM A53/A53M and BS 1387 specifications, serving contractors, distributors, and project developers worldwide.

What Is Galvanized Steel Tube?

Galvanized steel tube refers to carbon steel tubing that has been coated with a protective zinc layer through either hot-dip galvanizing or electro-galvanizing processes. The zinc coating—typically ranging from 30 µm to 85 µm in thickness per ASTM A123/A123M—acts as a sacrificial barrier, shielding the base steel from moisture, chemicals, and atmospheric oxidation. This process significantly extends the tube's functional lifespan to 20–50 years depending on environmental exposure conditions.

Galvanized Steel Tube Technical Specifications

Our galvanized steel tubing is produced in compliance with ASTM A53 Grade B, EN 10255, and BS 1387 standards. Below are the key parameters:

Galvanized steel tube supplier

Property	Specification
Outer Diameter	21.3 mm – 219.1 mm (1/2" – 8")
Wall Thickness	1.5 mm – 12.0 mm
Yield Strength (min.)	240 MPa per ASTM A53 Grade B
Tensile Strength (min.)	415 MPa per ASTM A53 Grade B
Zinc Coating Weight	300–600 g/m² (hot-dip galvanized)
Length	5.8 m, 6.0 m, 12.0 m, or custom cut
End Finish	Plain end, threaded, or grooved

Key Applications of Galvanized Steel Tubing

Structural frameworks: Greenhouse structures, fencing, scaffolding, and handrails
Water distribution: Potable water supply lines and irrigation systems compliant with NSF/ANSI 61
Mechanical engineering: Conveyor supports, equipment frames, and automotive chassis components
Oil and gas: Low-pressure fluid transmission lines and protective conduit

Why Choose Our Galvanized Tube Supply

We operate with an annual production capacity exceeding 200,000 metric tons and maintain ISO 9001:2015 certified quality management. Every batch of galvanized steel tube ships with mill test certificates (MTC) per EN 10204 Type 3.1, covering chemical composition, mechanical properties, and zinc coating uniformity. Our in-house testing laboratory performs hydrostatic testing to 2.5 MPa, flattening tests, and coating adhesion verification before dispatch.

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 combined minimum of 10 metric tons.

Do you provide material test certificates?

Yes. Each shipment includes original mill test certificates per EN 10204 Type 3.1, documenting chemical analysis, tensile results, and zinc coating weight. Third-party inspection by SGS or Bureau Veritas is available upon request.

Galvanized steel tube wholesale

What is the typical delivery time?

Stock items ship within 7–10 business days. Custom-produced galvanized steel tube orders—including non-standard diameters or special coating weights—typically require 25–35 days from order confirmation.

Can you cut to custom sizes?

Absolutely. We provide precision cutting, threading (BSP or NPT), grooving, and beveling services. Custom lengths from 0.5 m to 12.0 m are available with a tolerance of ±5 mm.

Get a Competitive Quote for Galvanized Steel Tube

Ready to source premium-grade galvanized steel tubing at mill-direct rates? Contact our sales team today with your required specifications—including outer diameter, wall thickness, coating standard, and quantity. We respond to all inquiries within 12 hours with detailed pricing and lead time confirmation.

Galvanized steel tube China

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Chris Martin

Canada

2025-09-08

Perfect Galvanized Steel Tube for Oil and Gas Conduit Application

Placed a mixed-container order totaling 14 tons across three sizes—60.3mm, 88.9mm, and 114.3mm OD, all in 4.0mm wall—for low-pressure fluid transmission conduit at an oil sands facility in Alberta. All material certified to ASTM A53 Grade B with hydrostatic test documentation at 2.5 MPa. Grooved end finish on the 114.3mm tubes was dimensionally accurate and compatible with our Victaulic couplings—no rework required on site. Bureau Veritas inspection was coordinated by the supplier before shipment. Total lead time from order confirmation to delivery in Edmonton was 38 days including ocean freight, which aligned with our project schedule. Pricing was 11% below our previous North American distributor for the same spec.

Wei Chen

Singapore

2025-09-29

Acceptable Galvanized Tube Quality, Coating Variance Issue Resolved

Ordered 6 tons of galvanized steel tube, 101.6mm OD x 5.0mm wall, for resale to a fabrication client in Indonesia. On arrival, our inspector flagged that coating weight on approximately 15% of tubes measured at 285 g/m²—slightly below the 300 g/m² lower threshold. We raised this with the supplier's quality team and they responded within 24 hours, acknowledged the variance, and arranged a partial replacement shipment at no additional freight cost. Issue was resolved within 10 days. The replacement batch tested at 340–380 g/m², fully compliant. Supplier's after-sales response was commendable. We will consider reordering but will request pre-shipment third-party coating inspection for future orders.

Carlos Silva

Brazil

2025-10-14

Reliable Galvanized Tubing Supply for Agricultural Irrigation Systems

Sourced 15 tons of galvanized steel tube in 219.1mm OD x 6.0mm wall for irrigation pipeline infrastructure in São Paulo state. Product met BS 1387 requirements and MTC documentation was provided in English, which our compliance team required. Flattening test results were included in the certificate package without needing to request separately—appreciated that. Delivery was 32 days, within the custom production window quoted. Price per ton was 7% lower than our previous domestic supplier for equivalent specification. One suggestion: clearer online tracking updates during production would improve the experience. Overall a solid supplier for large agricultural projects.