China Galvanized Steel Pipe Manufacturers Suppliers Factory - Customized Service

Galvanized Steel Pipe Manufacturer & Supplier

Hot-Dip Galvanized Steel Pipe for Construction, Infrastructure and Industrial Applications
CXC Steel Tube manufactures and processes hot-dip galvanized (HDG) steel pipes, engineered to eliminate costly on-site secondary processing. By combining precision tube forming with in-house processing—including fixed-length cutting, threading, grooving, and flanging—we deliver project-ready steel pipes directly to global contractors, OEMs, and distributors.

Key Supply Capabilities:
Round Pipe OD: Φ10 mm to Φ219 mm | Wall Thickness: 0.75 mm to 6.0 mm
Square & Rectangular Range: 10 × 10 mm to 200 × 200 mm
Zinc Coating Thickness: Up to 80 µm (300–600 g/m²) customized per specification
Governing Standards: ASTM A53, BS 1387, EN 10255, ASTM A123, BS EN ISO 1461
Inspection & Quality: ISO 9001 certified plant, 100% MTC (EN 10204 3.1), 3rd-Party inspection (SGS/BV) supported

Hot Dip Galvanized Steel Pipe
Outer Diameter: Φ10 mm – Φ219 mmWall Thickness: 0.75 mm – 6.0 mmLength: Standard lengths 6 m, 9 m, 12 m; customizableShape: Round pipe (square, rectangular available, irregular shapes
Pre Galvanized Steel Pipe
Material: Q195, Q235, Q345, SPCC, S350GD, S450GD, S550GD. Steel Grade Standards: ASTM A500 / A53EN 10219 / EN 10305BS 1387JIS G3444. Outer Diameter: . Round tube: Φ10 mm – Φ219 mm. Square tube: 10*10
Galvanised Metal Tubing
Round tube: Φ10 mm – Φ219 mm. Square tube: 10*10 mm – 200*200 mm. Rectangular tube: 10*20 mm – 150*200 mm.
Galvanized ERW Steel Pipe
Round pipe: Φ10 mm – Φ219 mm. Square pipe: 10*10 mm – 200*200 mm. Rectangular pipe: 10*20 mm – 150*200 mm.
Galvanized Hollow Pipe
Round Tube: Φ10 mm – Φ219 mm;. Square Tube: 10*10 mm – 200*200 mm;. Rectangular Tube: 10*20 mm – 150*200 mm.
Custom Galvanized Pipe
Custom Galvanized Pipe Introduction Custom galvanized pipes are galvanized steel pipe products made from high-quality carbon steel, customized according to the customer's specific needs in terms
Galvanized Steel Pipes
Agricultural Facilities: Greenhouse frames, sprinkler/drip irrigation systems, livestock fencing, agricultural machinery frames, etc.. Power and Telecommunications: Cable protection conduits, utility
Galv Square Steel Tubing
Pipe Type:Square Pipe. Material:Q195、Q235、Q345、SPCC、S350GD、S450GD、S550GD. Outer Diameter:10*10 mm - 200*200 mm. Wall Thickness:0.6 mm – 10.0 mm.
Galvanised Carbon Steel Pipe
Round：Φ10 mm – Φ219 mm. Square：10*10 mm– 200*200 mm. Rectangular：10*20 mm– 150*200 mm.
Galvanized Round Pipe
Wall thickness:0.75 mm – 6.0 mm. Length:Standard lengths 6 m, 9 m, 12 m; customizable. Processing services:cutting, chamfering, tube shrinking, bending, flattening, forming, heat treatment, etc..
Galvanized Rectangular Steel Tube
Outer Diameter:10*20 mm - 150*200 mm. Wall Thickness:0.75 mm – 12.0 mm. Length:Standard lengths 6 m, 9 m, 12 m; customizable.
Galvanized Industrial Pipe
Round tube: Φ10 mm – Φ219 mm. Square tube: 1010 mm – 200-200 mm. Rectangular tube: 1020 mm – 150-200 mm.

Product Specifications

Parameter	Specifications & Available Options
Product Type	Hot-Dip Galvanized Steel Pipe (HDG)
Round Pipe Outer Diameter (OD)	Φ10 mm – Φ219 mm
Square Tube Dimensions	10 × 10 mm – 200 × 200 mm
Rectangular Tube Dimensions	10 × 20 mm – 150 × 200 mm
Wall Thickness (WT)	0.75 mm – 6.0 mm
Standard Lengths	6 m / 9 m / 12 m (Custom precision cutting available)
Steel Material Grades	Q195, Q235, Q345, SPCC, S350GD, S450GD, S550GD
Applicable Standards	ASTM A53, BS 1387, EN 10255, JIS G3444, ASTM A123, BS EN ISO 1461
End Options	Plain End, Threaded (NPT/BSPT), Grooved, Flanged
Custom Processing	Beveling, Punching, Bending, Flattening, Custom Sections
Quality Verification	Chemical Composition, Dimensional Tolerance, Zinc Coating Mass, Mechanical Testing
Documentation & Inspection	Mill Test Certificate (EN 10204 3.1), SGS / BV / Intertek 3rd Party Inspection

Why Choose Us

Zero On-Site Re-working

We supply pre-threaded, grooved, or flanged pipes tailored to your engineering drawings, reducing field installation time by up to 30%.

Verified Zinc Protection

Every production lot undergoes magnetic coating thickness testing to ensure uniform coverage with zero peeling or pinholes.

Mixed-Spec Bulk Shipments

Consolidate multiple outer diameters, wall thicknesses, and end treatments into a single container shipment to optimize ocean freight efficiency.

Complete Material Traceability

Full heat-number tracking from raw steel strip to finished bundle, accompanied by certified inspection reports.

Material Grade Selection Guide

Q195 / SPCC

Low-carbon steel optimized for extensive cold forming, bending, and general fabrication.

Q235 / Q345

High-strength structural steel widely specified for general construction, scaffolding, and load-bearing framing.

S350GD / S450GD / S550GD

High-yield structural grades engineered for light-gauge solar mounting structures, agricultural frames, and high-load profiles.

Hot-Dip Galvanized vs. Pre-Galvanized Pipe

Specification / Feature	Hot-Dip Galvanized Steel Pipe (HDG)	Pre-Galvanized Steel Pipe
Galvanizing Timing	Dipped after pipe forming and welding	Formed from pre-coated zinc steel strip
Zinc Layer Thickness	Heavy duty: 40–80 µm (300–600 g/m²)	Light duty: 10–20 µm (60–140 g/m²)
Weld Seam Protection	Complete coverage inside and outside	Requires secondary seam zinc spraying
Corrosion Resistance	Excellent (Outdoor, Marine, Underground)	Moderate (Indoor, Dry Environments)
Design Life Span	20–50+ Years	5–10 Years
Typical Applications	Structural framing, solar racking, piling, water lines	Indoor scaffolding, conduits, furniture frames

Precision End Options for Faster On-Site Assembly

Plain End

Clean-cut and deburred for field welding and direct fabricator assembly.

Threaded End (NPT / BSPT)

Supplied with high-precision threads and protective end caps for mechanical piping systems.

Grooved End

Processed according to standard roll-groove specifications for rapid mechanical coupling installation.

Flanged End

Pre-welded with matching flanges for direct bolt connection to valves, pumps, and industrial vessels.

Key Applications

01/

Construction & Structural: Scaffolding systems, building columns, highway guardrails, and heavy framework.

02/

Solar & Renewable Energy: Photovoltaic support columns, ground-screw piles, and mounting structures.

03/

Infrastructure & Municipal: Outdoor lighting poles, cable protection conduits, and drainage networks.

04/

Agriculture: Greenhouse frames, livestock penning, and irrigation supply lines.

Quality Control & Testing Standards

Raw Material Verification

Spectrometric chemical analysis ensuring accurate carbon and alloy content.

Dimensional Inspection

Laser outer diameter checking, wall thickness micrometers, and length tolerance control.

Zinc Layer Testing

Electromagnetic and destructive coating thickness verification complying with ASTM A123 / ISO 1461.

Mechanical Testing

Yield strength, tensile strength, elongation, and flattening/bending tests.

3rd-Party Inspection

Full coordination with SGS, Bureau Veritas, or Intertek for pre-shipment auditing.

Certificate

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How to Request a Fast Quote

To receive an accurate commercial quotation within 12 hours, please specify:

Product Type & Shape

Round / Square / Rectangular HDG Pipe

Dimensions

Outer Diameter (or section size) and Wall Thickness

Steel Grade & Standard:

E.g., Q235B (ASTM A53) or S350GD

Zinc Coating Requirement

E.g., Min. 60 µm / 450 g/m²

Length & End Type

E.g., 6 m with Threaded Ends + Caps

Quantity & Destination Port

Total tonnage/pieces and preferred incoterm (FOB/CIF)

FAQ

Q: Can galvanized steel pipe be supplied with threaded ends?

A: Yes. CXC lists threaded ends among its available end configurations. Thread standard and dimensions should be specified in the purchase order.

Q: Can the pipe be cut to a specific length?

A: Yes. CXC provides fixed-length cutting and customized lengths in addition to standard 6 m, 9 m and 12 m lengths.

Q: What pipe size ranges does CXC supply?

A: We supply round HDG pipes from Φ10 mm to Φ219 mm, square tubes from 10 × 10 mm to 200 × 200 mm, and rectangular tubes up to 150 × 200 mm. Wall thicknesses range from 0.75 mm to 6.0 mm.

Q: Can CXC supply certified zinc coating inspection reports?

A: Yes. Every order is shipped with a Mill Test Certificate (EN 10204 3.1) detailing zinc coating thickness, chemical composition, and mechanical properties. Third-party testing by SGS or BV is available upon request.

Q: Do you handle custom fixed-length cutting and end processing?

A: Yes. We perform precision cutting, beveling, threading, grooving, punching, and welding in-house prior to shipment.

Q: What is the lead time for export orders?

A: Standard production orders are typically ready for shipment within 15 to 25 days depending on tonnage and secondary processing requirements.

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. Customized orders are welcome.

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