Welded Steel Pipe for Construction - Mill Direct Supplier

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

welded steel pipe for building construction

Customizable Rock-bottom price

$530 1-49 ton Base price

$507 50-99 ton 4.3% off

$495 ≥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$ 530.00

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 Welded Steel Pipe for Building Construction

Property	Parameter	Description
Product Name	Welded Steel Pipe for Building Construction	ERW / LSAW / SSAW structural welded steel pipe used in construction applications
Material Grade	Q235B, Q345B, S235JR, S355JR, ASTM A53 Gr.B, ASTM A500 Gr.B/C	Q235B ≈ S235JR ≈ ASTM A36; Q345B ≈ S355JR ≈ ASTM A572 Gr.50
Standard Compliance	ASTM A53, ASTM A500, EN 10219, EN 10210, GB/T 13793, GB/T 6728	Covers ERW, cold-formed and hot-finished structural hollow sections for construction
Chemical Composition (C)	≤ 0.26% (Q235B); ≤ 0.20% (Q345B); ≤ 0.25% (ASTM A53 Gr.B)	Carbon content controls weldability and strength
Chemical Composition (Mn, Si, P, S)	Mn ≤ 1.60%; Si ≤ 0.55%; P ≤ 0.045%; S ≤ 0.045%	Typical values per GB/T 700, GB/T 1591 and ASTM A53 requirements
Tensile Strength	415–655 MPa (ASTM A53 Gr.B); 400–540 MPa (Q235B); 470–630 MPa (Q345B)	Minimum tensile strength per respective standard; ensures structural load-bearing capacity
Yield Strength	≥ 240 MPa (Q235B); ≥ 345 MPa (Q345B); ≥ 240 MPa (ASTM A53 Gr.B)	Minimum yield strength guaranteeing structural integrity under design loads
Elongation	≥ 22% (Q235B); ≥ 20% (Q345B); ≥ 29% (ASTM A53 Gr.B, 2-in gauge)	Measured on standard gauge length; indicates ductility for seismic and dynamic loads
Outer Diameter (OD)	21.3 mm – 2020 mm (ERW: 21.3–660 mm; LSAW/SSAW: 219–2020 mm)	Wide OD range covers structural columns, scaffolding, piling and framework
Wall Thickness	1.5 mm – 25.4 mm	Selected based on design pressure, load and span requirements
Length	Standard: 6 m, 12 m; Custom: 1–18 m	Fixed or random lengths available; cut-to-length service upon request
Surface Finish	Black (mill finish), hot-dip galvanized (≥ 85 µm), epoxy coated, 3PE coated	Galvanized finish per ASTM A123 / EN ISO 1461 for corrosion protection in exposed structures
Application	Structural columns, beams, scaffolding, piling, curtain wall frames, greenhouse frames	Widely used in residential, commercial and industrial building construction projects
Certification	ISO 9001:2015, CE Marking (EN 1090), API 5L (where applicable), SGS / BV / TÜV third-party inspection	Certificates available for mill test reports (MTR) per EN 10204 3.1 / 3.2
Packaging	Bundled with steel strips (max 2 MT/bundle); end caps fitted; waterproof paper or PE film wrapping	Sea-worthy export packing available; bare bundle for domestic delivery
MOQ	5 MT per size (stock items); 25 MT per size (custom production)	Mixed sizes accepted to meet MOQ; trial orders negotiable for new customers

Welded Steel Pipe for Construction - Mill Direct Supplier

Welded steel pipe for building construction serves as one of the most structurally critical materials in modern civil and commercial projects, providing the backbone for frameworks, load-bearing columns, scaffolding systems, and utility conduit networks. Manufactured through high-frequency electric resistance welding (ERW) or submerged arc welding (SAW) processes, these pipes deliver consistent dimensional accuracy and mechanical reliability that demanding construction environments require. Our mill-direct supply chain eliminates intermediary markups, enabling project managers and procurement teams to source certified welded steel pipe at cost-effective rates without compromising on quality. With production capacities supporting large-scale infrastructure contracts and residential developments alike, we maintain ready stock across a broad range of diameters and wall thicknesses. Every batch undergoes rigorous hydrostatic pressure testing, ultrasonic weld inspection, and dimensional verification before dispatch, ensuring full compliance with internationally recognized standards including ASTM A53, EN 10219, and GB/T 13793. Whether your project demands structural hollow sections or pressure-rated conduit pipe, our technical team is equipped to match the right specification to your exact application.

welded steel pipe for building construction supplier

What is Welded Steel Pipe for Building Construction?

Welded steel pipe for building construction is a tubular steel product formed by rolling flat steel strip or plate into a cylindrical shape and joining the seam through welding. Produced in round, square, and rectangular profiles, it finds extensive application in structural framing, pile foundations, mechanical and electrical conduit routing, fire suppression systems, and HVAC installations across residential, commercial, and industrial building projects worldwide.

welded steel pipe for building construction manufacturer

Welded Steel Pipe for Building Construction Technical Specifications

Our welded steel pipe inventory covers outer diameters from 21.3 mm to 2,032 mm with wall thicknesses ranging from 1.8 mm to 25.4 mm, meeting schedules SCH 20 through SCH 160. Base material grades include ASTM A53 Grade B (minimum yield strength 240 MPa, tensile strength 415 MPa), EN 10219 S355J2H, and Q235B/Q355B per Chinese national standards. Surface treatments available include hot-dip galvanizing to ASTM A123 (minimum 85 µm coating), anti-rust oil coating, and bare black finish. Length options span 6 m, 12 m, and custom cut-to-length from 1 m to 18 m. All pipes carry mill test certificates traceable to heat number, with hydrostatic test pressure verified at 1.5× working pressure minimum.

Parameter	Specification
Outer Diameter Range	21.3 mm – 2,032 mm
Wall Thickness	1.8 mm – 25.4 mm
Yield Strength (ASTM A53 Gr.B)	≥ 240 MPa
Tensile Strength (ASTM A53 Gr.B)	≥ 415 MPa
Applicable Standards	ASTM A53, EN 10219, GB/T 13793
Surface Treatment	Black, Galvanized (≥85 µm), Epoxy Coated
Length Options	6 m, 12 m, Custom (1–18 m)
Welding Method	ERW / SAW / LSAW

Get a Competitive Quote for Welded Steel Pipe for Construction

Partner with a trusted mill-direct supplier to secure premium-grade welded steel pipe for your next building construction project. Our dedicated sales engineers review your drawings and load requirements to recommend the most cost-effective specification, ensuring zero over-engineering and maximum budget efficiency. Submit your inquiry now and receive a detailed quotation within 24 hours.

welded steel pipe for building construction wholesale

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

Contact us today to get your free quote within 24 hours!

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Tariq A.

UAE

2025-02-02

Initial coating inconsistency flagged — supplier resolved promptly

We ordered 75 tonnes of hot-dip galvanized ERW pipe, OD 48.3 mm, wall 3.2 mm, ASTM A53 Gr.B, for a residential compound project in Dubai. On arrival, our QC team found approximately 12% of pipes in one bundle had galvanizing below the 85 µm minimum — some readings were around 72–78 µm. We raised a formal NCR with photos. The supplier acknowledged the issue within 24 hours, arranged replacement pipes for the affected bundle at no additional cost, and shipped within 10 days. The replacement batch passed our inspection. The resolution was handled professionally; we are willing to order again with an agreed pre-shipment inspection clause.

Kevin M.

United States

2025-02-24

Competitive bulk pricing, delivery window slightly wider than expected

Sourced 210 tonnes of ERW pipe, OD 114.3 mm, wall 6.0 mm, ASTM A53 Gr.B, black finish, for fire suppression system risers across a multi-building campus project in Ohio. Hydrostatic test results and dimensional reports were accurate and well-organized. Pricing for this volume was the best we found after contacting five suppliers. Delivery quoted at 20 days ran to 25 days due to port congestion — not ideal but the supplier communicated proactively and we adjusted our installation schedule with enough notice. Quality on arrival was good; no issues with the weld seam or coating.

Lukas B.

Germany

2025-03-18

Good value on EN 10219 rectangular hollow sections, minor paperwork delay

Ordered 60 tonnes of rectangular hollow sections, 150×100×6 mm, EN 10219 S355J2H, for structural framing on a logistics warehouse near Frankfurt. Pipe dimensions and weld quality were fully compliant on arrival. Price per tonne was competitive versus European distributors — roughly 8% savings. The only issue was a two-day delay in receiving the CE declaration document, which held up our site inspection sign-off briefly. The supplier resolved it quickly once we flagged it. Overall a solid transaction; we have issued a follow-up RFQ for square hollow sections.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What types of steel pipes do you supply for building?

A:We supply seamless steel pipes, ERW welded pipes, galvanized steel pipes, square and rectangular steel pipes for construction use.

Q: What sizes and dimensions are available?

Q: Do you accept customized length or cutting service?

Q: Do you offer galvanized or anti-corrosion treatment?

Q: What packaging and loading method do you use?

Q: Can your steel pipes be used for structural and plumbing construction?

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.