China Galvanized Steel Pipe Manufacturers Suppliers Factory - Customized Service

Our factory

Wuxi Chengxingchuang Metal Products Co., Ltd. is a professional Galvanized Steel Pipe manufacturer and supplier. With a 7,000㎡ factory, advanced ERW production lines, and ISO 9001-certified quality control, we provide customized steel pipe solutions for construction, solar, industrial, and agricultural applications.

Galvanized ERW Steel Pipe
Galvanized ERW Steel Pipe is made from high-quality carbon steel strip coils, formed by high-frequency resistance welding (ERW), and then hot-dip galvanized (HDG) or pre-galvanized. It is widely used
Galvanized Hollow Pipe
Galvanized Hollow Pipe is made of high-quality carbon steel strip, which is cold-bent, high-frequency ERW welded, and then hot-dip galvanized (HDG) or pre-galvanized (GI) treated.
Custom Galvanized Pipe
Custom Galvanized Pipe uses ERW welded pipe, LSAW steel pipe or seamless steel pipe as the base material, and forms a corrosion-resistant zinc layer through hot-dip galvanizing (HDG) or
Galvanized Rectangular Steel Tube
Galvanized Rectangular Steel Tubes are made of high-quality carbon steel strips, cold-bent, high-frequency ERW welded, and then hot-dip galvanized or pre-galvanized. They combine high strength,

Types of Galvanized Steel Pipe

We supply galvanized steel pipes in round, square, rectangular, and custom shapes for construction, industrial, and engineering applications.

Galvanized ERW Steel Pipe

Manufactured by Electric Resistance Welding (ERW) technology, galvanized ERW steel pipes are available in round, square, and rectangular sections. They are commonly used for solar structures, steel frames, machinery, fencing, and general fabrication projects.

Galvanized Hollow Pipe

Galvanized hollow pipes feature a hollow section with zinc coating protection. They are widely used for structural frames, greenhouse structures, warehouses, support systems, and industrial applications.

Galvanized Rectangular Steel Tube

Galvanized rectangular steel tubes have flat sides that allow easy welding, connection, and installation. They are suitable for building structures, solar mounting systems, equipment frames, and heavy-duty applications.

Custom Galvanized Pipe

We manufacture custom galvanized pipes according to customer drawings and project requirements, including customized sizes, wall thicknesses, lengths, and processing services for OEM and engineering projects.

Galvanized Steel Pipe Specifications

Parameter	Technical Details
Product Name	Galvanized Steel Pipe / Tube
Material Grade	Premium Carbon Steel (Q195, Q235, Q355)
Welding Technology	ERW (Electric Resistance Welded)
Pipe Geometries	Round, Square, Rectangular Hollow Section
Round Pipe Diameter Range	Φ10 mm – Φ219 mm
Square Tube Size Range	10×10 mm – 200×200 mm
Rectangular Tube Size Range	10×20 mm – 150×200 mm
Wall Thickness Range	0.75 mm – 12.0 mm
Standard Lengths	5.8m, 6m, 11.8m, 12m, or Customized Cutting
Surface Treatment	Hot-Dip Galvanized / Pre-Galvanized (Zinc Layer: 40g - 500g/㎡)
Executive Standards	ASTM A53, BS 1387, EN 10255, GB/T 3091
Quality Management	ISO 9001 Certified

Manufacturing Process

Carbon Steel Preparation: Sourcing premium-grade steel coils with verified chemical compositions.
Pipe Forming & Welding: Feeding steel strips through precision rollers and employing ERW technology to form a strong, seamless-looking longitudinal weld seam.
Surface Treatment: Cleaning and preparing the steel surface to ensure maximum adhesion for the zinc layer.
Zinc Coating Application: Applying a uniform, protective zinc layer to protect against oxidation and corrosion.
Dimensional Inspection & Quality Testing: Performing strict checks on dimensions, wall thickness, weld integrity, and coating thickness before packaging.

Galvanized Steel Pipe Buying Guide

When procuring galvanized steel pipes for your project, consider the the following key factors:
Determine the Correct Shape: Choose round pipes for support columns and fluid transport; select square or rectangular tubes for rigid frameworks and architectural assembly.
Calculate Required Wall Thickness: Match the wall thickness to your load-bearing requirements—thicker walls for heavy structural loads and thinner walls for lightweight or decorative applications.
Evaluate Environmental Exposure: Standard coatings suit indoor or mild environments, whereas high-humidity, coastal, or industrial settings require enhanced zinc coating thickness.
Verify Standards: Ensure material grades, dimensions, and testing certificates match your regional engineering codes.

Quality Control and Certification

Quality is the cornerstone of our manufacturing operations. We operate strictly under an ISO 9001 Quality Management System. Our comprehensive inspection protocol includes:

Dimensional Checks

Utilizing precision instruments to verify outer diameter, wall thickness, and length accuracy.

Weld Integrity Testing

Non-destructive and mechanical testing to ensure weld seam strength.

Zinc Coating Verification

Ensuring uniform distribution and specified thickness of the protective layer.

Surface Inspection

Inspecting for smooth finishes free from cracks, blisters, or uncoated patches.

productcate-1-1

Secure Packaging Solutions for International Shipping

To ensure products arrive at global project sites in pristine condition, we provide secure, export-standard packaging:

Bundled tightly with steel strips to prevent shifting during transit.

Wrapped in waterproof plastic or woven bags to protect against moisture and sea-salt spray during ocean freight.

Custom packaging options available upon request for special logistics requirements.

productcate-1-1

Frequently Asked Questions

Q: What international quality standards do your galvanized steel pipes comply with?

A: Our pipes comply strictly with global benchmarks including ASTM A53, BS 1387, EN 10255, and GB/T 3091 standards.

Q: What is the typical minimum order quantity (MOQ) for custom production runs?

A: The standard MOQ is typically 5 metric per size, though we remain flexible to accommodate trial orders for strategic project partners.

Q: Can you provide Mill Test Certificates (MTC) with each shipment?

A: Yes, official EN 10204 3.1 Mill Test Certificates detailing chemical composition and mechanical properties are provided prior to dispatch.

Q: What is the average lead time for container-load export orders?

A: Standard production and port delivery generally take between 15 to 25 days depending on the specific customization and order volume.

Q: Do you offer pre-shipment third-party inspection services like SGS or BV?

A: Yes, we fully support client-appointed third-party inspections to verify product quality and quantity before final loading.

Q: What is the minimum zinc coating weight you can apply for severe marine environments?

A: We can customize hot-dip galvanizing layers up to 500g/㎡ to ensure maximum corrosion resistance in highly corrosive coastal zones.

Q: Do you offer value-added processing services before shipping?

A: Yes, we provide precision cutting to fixed lengths, thread cutting, pipe end grooving, and punching according to CAD drawings.

Q: What are your accepted international payment terms for B2B transactions?

A: We commonly accept T/T (Telegraphic Transfer) with a 30% deposit and 70% balance against bill of lading copies, alongside irrevocable L/C at sight.

Q: How do you secure galvanized pipes during ocean freight to prevent white rust?

A: We apply anti-rust passivation treatments and wrap bundles in waterproof woven membranes with internal desiccant bags for sea voyage protection.

Q: Can you brand or stencil customer logos and specific markers directly onto the steel pipes?

A: Yes, we offer customized stencil printing and ink-jet marking displaying company logos, standards, and dimensions along the pipe body.

As one of the most professional galvanized steel pipe manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy cheap galvanized steel pipe for sale here from our factory. Welcome to contact us for customized service.