Galvanized Steel Pipes - ASTM Certified Manufacturer

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

Galvanized Steel Pipes for Structural Construction

Customizable Rock-bottom price

$540 1-49 ton Base price

$516 50-99 ton 4.4% off

$504 ≥100 ton 6.7% 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$ 540.00

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 Pipes for Structural Construction

Property	Parameter	Description
Product Name	Galvanized Steel Pipes for Structural Construction	Hot-dip or electro-galvanized steel pipes designed for load-bearing and structural applications
Material Grade	Q235B / Q355B (GB); S235JR / S355JR (EN); ASTM A53 Gr.B; SS400 (JIS)	Low-carbon and high-strength structural steel grades with international equivalents
Standard Compliance	ASTM A53 / A500; EN 10219; GB/T 3091; JIS G3444	Meets major international standards for structural and general-purpose galvanized steel pipes
Chemical Composition	C ≤ 0.26%, Mn ≤ 1.50%, Si ≤ 0.40%, P ≤ 0.035%, S ≤ 0.035%	Controlled chemistry ensures weldability, formability, and corrosion resistance after galvanizing
Tensile Strength	≥ 415 MPa (ASTM A53 Gr.B); ≥ 470 MPa (S355JR / Q355B)	Minimum tensile strength values per respective standard for structural integrity
Yield Strength	≥ 240 MPa (Q235B / S235JR); ≥ 355 MPa (Q355B / S355JR)	Adequate yield strength for columns, frames, and structural supports
Elongation	≥ 20% (Q235B); ≥ 22% (ASTM A53 Gr.B)	Good ductility ensures energy absorption and resistance to structural deformation
Outer Diameter (OD)	21.3 mm – 508 mm	Wide OD range covering DN15 to DN500 for various structural applications
Wall Thickness	1.8 mm – 20.0 mm	Schedule 20 to Schedule 80 available; custom wall thickness upon request
Length	6 m / 12 m (standard); 1 m – 18 m (custom)	Fixed or random lengths available; cut-to-length service supported
Zinc Coating	Hot-dip: ≥ 45 µm (≥ 275 g/m²); Electro-galvanized: 5–25 µm	Hot-dip galvanizing per ASTM A123 / ISO 1461 provides superior corrosion protection
Surface Finish	Hot-dip galvanized (HDG); Electro-galvanized; Pre-galvanized	Uniform zinc coating with smooth or spangled finish; free from cracks, blisters, and bare spots
Application	Building frames, scaffolding, bridges, fencing, greenhouse structures, utility poles	Widely used in civil construction, infrastructure, and industrial structural projects
Certification	ISO 9001:2015; CE Marking; SGS / BV Third-party Inspection; Mill Test Certificate (EN 10204 3.1)	Full quality documentation and third-party inspection available upon request
Packaging	Bundled in steel straps (1–3 MT/bundle); plastic end caps; waterproof woven bags or bare	Export-standard packaging to prevent zinc coating damage during ocean or land transport
MOQ	5 MT per size / grade	Mixed container orders accepted; spot stock available for standard sizes

Galvanized Steel Pipes - ASTM Certified Manufacturer

Galvanized Steel Pipes for Structural Construction represent one of the most dependable solutions in modern civil and industrial engineering. Produced through a zinc-coating process that delivers outstanding anti-corrosion properties, these pipes serve critical roles in building frameworks, scaffolding systems, underground conduits, and heavy-load bearing assemblies. As an ASTM-certified manufacturer, we supply pipes that conform to ASTM A53, ASTM A500, and related international standards, ensuring dimensional accuracy and mechanical consistency across every production batch. Whether your project demands large-diameter structural columns or precision-fit conduit runs, our galvanized steel pipes are engineered to withstand harsh environmental exposure, mechanical stress, and long service cycles — making them a cost-effective choice for contractors, engineers, and procurement teams seeking reliable materials at mill-direct rates. Our global supply chain supports timely delivery to North America, Europe, Southeast Asia, and the Middle East, backed by rigorous third-party inspection and full material traceability documentation.

Galvanized Steel Pipes for Structural Construction supplier

What are Galvanized Steel Pipes for Structural Construction?

Galvanized Steel Pipes for Structural Construction are carbon or mild steel tubes coated with a protective zinc layer through hot-dip or electro-galvanizing methods. This zinc coating acts as a physical and electrochemical barrier against rust, moisture, and chemical attack. Commonly used in load-bearing frameworks, fencing, handrails, and utility conduits, these pipes combine the structural integrity of steel with significantly extended service life — even in corrosive or outdoor environments.

Galvanized Steel Pipes for Structural Construction Manufacturing Process

Manufacturing begins with cold-drawn or hot-rolled steel strips that are formed into tubes via electric resistance welding (ERW) or seamless rolling. Pipes are then cleaned through acid pickling and flux treatment before entering a molten zinc bath maintained at approximately 450°C during hot-dip galvanizing. The resulting zinc layer — typically 45–85 µm thick per ASTM A123 — bonds metallurgically to the steel substrate, forming a multi-layer coating of superior durability and adhesion. Each pipe undergoes hydrostatic pressure testing, dimensional inspection, and surface quality verification before dispatch.

Galvanized Steel Pipes for Structural Construction Technical Specifications

Our galvanized steel pipes are available in outer diameters ranging from 21.3 mm (½ inch) to 609.6 mm (24 inches), with wall thicknesses from 1.8 mm to 20 mm. Yield strength meets a minimum of 240 MPa, with tensile strength reaching 415 MPa minimum per ASTM A53 Grade B. The zinc coating weight complies with ASTM A123 at no less than 610 g/m² for structural-grade material. Lengths are supplied in standard 6 m or 12 m cuts, with custom lengths available. Material certifications include mill test reports (MTRs), EN 10219, BS 1387, and ISO 9001:2015 quality management compliance.

Get a Competitive Quote for Galvanized Steel Pipes

Ready to source premium-grade Galvanized Steel Pipes for Structural Construction at mill-direct rates? Our dedicated sales engineers are available to review your project specifications, recommend the correct grade and dimensions, and deliver a detailed quotation within 24 hours. Bulk orders benefit from priority scheduling and volume-tiered pricing.

Galvanized Steel Pipes for Structural Construction manufacturer

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

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Galvanized Steel Pipes for Structural Construction wholesale

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Rajesh M.

United States

2025-02-01

Initial coating inconsistency flagged — supplier resolved promptly

We ordered 10 tons of 1.5-inch galvanized ERW pipes for conduit runs in a Florida commercial building project. During incoming QC, our inspector found zinc coating thickness on roughly 8% of pipes measured below 45 µm — below our ASTM A123 requirement. We raised a formal NCR with photos and measurement records. The supplier responded within 12 hours, acknowledged the issue, and arranged replacement of the affected quantity at no additional cost within 10 days. Final replacement batch met spec. Issue appears isolated. Willing to trial again on a smaller order before committing to larger volumes.

Oliver H.

United Kingdom

2025-02-22

Solid ASTM A500 product at competitive mill pricing — delivery slightly delayed

Procured 15 tons of rectangular and round galvanized structural tubes to ASTM A500 for a mixed-use development framing project in Manchester. Dimensional accuracy and coating adhesion were both satisfactory on inspection — zinc weight measured at 625 g/m², just above the 610 g/m² minimum. Our main feedback is that the original delivery estimate was 21 days but actual arrival was 28 days due to port congestion. Supplier communicated the delay proactively and provided revised ETAs. Quality of product itself justifies the 4-star rating; logistics coordination could be tighter.

Thomas B.

Germany

2025-03-16

Good value for EN 10219 compliant structural pipes — minor labeling issue resolved

Ordered 30 tons of 168 mm OD galvanized structural pipes, 6 mm wall thickness, for a modular industrial building project near Düsseldorf. EN 10219 compliance was confirmed in MTRs and third-party test reports. Mechanical properties were fully within spec. One bundle arrived with incorrect heat number labeling, which caused a short delay in our incoming inspection. Supplier issued corrected documentation within 24 hours and followed up proactively. Pricing was competitive versus European distributors. Overall good experience and fair value — would consider for future projects.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What is the zinc coating weight of your galvanized steel?

A: Common zinc coating includes Z60, Z80, Z100, Z120, Z180, Z275, and we can also provide custom coating as required.

Q: What types of galvanized steel do you supply for construction?

Q: What is the difference between GI and PPGI?

Q: Do you offer customized sizes and lengths?

Q: How do you package galvanized steel to prevent rust during shipment?

Q: Can you provide mill test certificates (MTC) for galvanized steel?

Product display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.

Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.

Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.