Steel Plate Column - ASTM Certified Manufacturer |

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

Customizable Rock-bottom price

$455 1-49 ton Base price

$435 50-99 ton 4.4% off

$425 ≥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$ 455.00

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 Steel Plate Column

Property	Parameter	Description
Product Name	Steel Plate Column	Structural column fabricated from welded or rolled steel plates, used in heavy-load bearing frameworks
Material Grade	Q235B / Q345B / A36 / A572 Gr.50 / S235JR / S355JR	International equivalents: Q345B ≈ S355JR (EN) ≈ A572 Gr.50 (ASTM); Q235B ≈ S235JR ≈ A36
Standard Compliance	ASTM A6 / A36 / A572; EN 10025-2; GB/T 700; GB/T 1591; JIS G3101	Fabrication per AWS D1.1 (welding), AISC 360, or GB 50017 structural steel design code
Chemical Composition – C	≤ 0.20% (Q345B) / ≤ 0.26% (A36)	Low carbon content ensures good weldability and toughness for column fabrication
Chemical Composition – Mn / Si / P / S	Mn: 1.00–1.60%; Si: ≤ 0.55%; P: ≤ 0.035%; S: ≤ 0.035%	Controlled alloying elements per GB/T 1591 and ASTM A572; improves strength and ductility
Tensile Strength	400–550 MPa (Q345B); 400–550 MPa (S355JR); ≥ 400 MPa (A36)	Per GB/T 1591, EN 10025-2, and ASTM A36/A572 respectively
Yield Strength	≥ 345 MPa (Q345B / S355JR); ≥ 250 MPa (A36); ≥ 345 MPa (A572 Gr.50)	Minimum yield strength for plate thickness ≤ 16 mm; decreases with increasing thickness per standard
Elongation	≥ 20% (Q345B); ≥ 22% (A36); ≥ 21% (S355JR)	Measured on gauge length L0 = 5.65√S0; ensures adequate ductility under seismic and dynamic loads
Plate Thickness	6 mm – 100 mm	Web plate and flange plate thickness selected based on load requirements and slenderness ratio
Column Cross-Section Dimensions	Height (H): 200–1200 mm; Width (B): 150–600 mm	Box section or H-section welded plate column; custom dimensions available per structural design
Length	3,000 mm – 18,000 mm (standard); custom lengths available	Single-piece or spliced column lengths per project specification and transport limitations
Surface Finish	Mill finish / Shot blasted Sa 2.5 / Primer coated / Hot-dip galvanized	Surface treatment per ISO 8501-1; anti-corrosion coating per client specification or project standard
Application	Industrial plants, high-rise buildings, bridges, heavy machinery frames, offshore structures	Suitable for primary load-bearing columns in steel structure systems requiring high axial and bending capacity
Certification	ISO 9001:2015; CE Marking (EN 1090); Mill Test Certificate (MTC) per EN 10204 3.1 / 3.2	Third-party inspection available: SGS, BV, TÜV; material traceability documentation provided
Packaging	Bundle with steel strapping; end caps for flange protection; rust-preventive oil applied if required	Seaworthy packaging available for export; loading per ISPM 15 for wooden dunnage
MOQ	5 metric tons (standard grade); 1 piece (custom fabricated)	OEM fabrication accepted; lead time 15–30 days depending on specification and quantity

Steel Plate Column - ASTM Certified Manufacturer

The steel plate column serves as one of the most critical load-bearing structural elements in modern construction, industrial facilities, and heavy infrastructure projects. Fabricated from high-strength flat steel plates welded or bolted into box or H-shaped cross-sections, these columns deliver exceptional axial compressive strength and bending resistance far exceeding standard rolled sections. Engineers across commercial high-rise buildings, bridge piers, petrochemical plants, and heavy-duty warehouses consistently specify steel plate columns when project demands exceed the capacity of conventional wide-flange profiles. As an ASTM-certified manufacturer with vertically integrated production capabilities, we supply precision-fabricated steel plate columns engineered to exact dimensional tolerances, meeting ASTM A572, ASTM A36, and ASTM A992 standards. Our mill-direct supply model ensures cost-effective pricing without compromising structural integrity, making us a preferred partner for contractors, structural engineers, and EPC firms managing large-scale steel construction programs worldwide.

What is Steel Plate Column?

A steel plate column is a custom-fabricated structural compression member assembled by welding together multiple flat steel plates to form box sections, H-sections, or cruciform profiles. Unlike hot-rolled sections limited by standard mill sizes, plate columns can be engineered to precise flange widths, web depths, and plate thicknesses—commonly ranging from 6 mm to 150 mm—allowing designers to optimize material efficiency for specific load combinations and slenderness ratio requirements in demanding structural applications.

Steel Plate Column supplier

Steel Plate Column Manufacturing Process

Production begins with CNC plasma or submerged arc cutting of certified steel plates to precise dimensional tolerances of ±0.5 mm. Flange and web plates are assembled using automated submerged arc welding (SAW) with full-penetration weld joints, achieving weld tensile strength exceeding 490 MPa. Post-weld straightening via hydraulic press corrects camber to within L/1000. Each column undergoes ultrasonic testing (UT) and magnetic particle inspection (MPI) before shot-blasting to Sa 2.5 surface preparation standard and protective coating application.

Steel Plate Column Technical Specifications

Our steel plate columns are manufactured to the following standard parameters:

Steel Plate Column manufacturer

Base Material Grades: ASTM A36 (Fy = 250 MPa), ASTM A572 Gr.50 (Fy = 345 MPa), ASTM A992 (Fy = 345 MPa, Fu = 448 MPa)
Plate Thickness Range: 6 mm – 150 mm
Section Depth: 200 mm – 2,000 mm (custom depths available)
Flange Width: 150 mm – 800 mm
Column Length: Up to 18,000 mm per piece (longer sections available with splice connections)
Yield Strength: 250 MPa – 690 MPa depending on grade selection
Weld Inspection: UT per AWS D1.1, MPI per ASTM E709
Surface Treatment: Shot-blast Sa 2.5 + epoxy primer or hot-dip galvanizing per ASTM A123
Dimensional Tolerance: Per AISC Code of Standard Practice and EN 1090-2 Class EXC3

All steel plate columns are supplied with full mill test reports (MTRs), third-party inspection certificates, and traceability documentation compliant with ISO 9001:2015 quality management requirements.

Get a Competitive Quote for Steel Plate Column

Partner with our ASTM-certified fabrication team for precision steel plate columns delivered on schedule and within budget. We provide mill-direct rates, rapid technical consultation, and full documentation support for projects of any scale. Submit your drawings or specifications today and receive a detailed quotation within 24 hours.

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!

Steel Plate Column factory

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Raj K.

India

2025-02-02

Quality was fine — packaging damage on arrival, but supplier resolved it

We ordered 30 ASTM A36 H-section plate columns, 500mm deep with 250mm flanges and 12mm web plates, for an industrial shed project. The fabrication quality itself was acceptable — weld inspection per AWS D1.1 was satisfactory and dimensional tolerances were within AISC standards. However, three columns arrived with dented epoxy primer coating due to inadequate transport bracing, which was a concern for our corrosion protection requirements. After raising the issue with photos, the supplier arranged touch-up coating materials and compensation credit within one week. Issue resolved, but packaging for long sections needs improvement.

Fiona L.

United Kingdom

2025-02-24

Competitive mill-direct pricing on ASTM A572 columns for multi-story project

Sourced 55 ASTM A572 Gr.50 H-section plate columns, 700mm depth with 350mm flanges and 20mm plates, for a 12-story mixed-use development in Manchester. The mill-direct pricing model offered a noticeable cost advantage over UK-based fabricators for this volume. Column quality was good — MTRs confirmed material grade and UT showed clean welds throughout. Delivery was on time at 5.5 weeks. I'd rate it four stars rather than five because the initial technical drawing review took slightly longer than expected, though the final product met all AISC and EN 1090-2 EXC3 requirements.

Omar A.

UAE

2025-03-18

Good value on bulk order — minor documentation delay resolved

Purchased 90 ASTM A36 box-section columns, 400mm × 400mm with 16mm plate thickness, for a logistics hub in Dubai. Pricing was competitive compared to local fabricators, and the structural quality was solid — dimensional tolerances held well and weld inspection reports were thorough. The only issue was a 3-day delay in receiving the third-party inspection certificates, which held up our customs clearance briefly. The team resolved it quickly once escalated. Overall good value for the volume, and we would consider using them again for future phases.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What standards do your structural steel products comply with?

A:Our structural steel mainly conforms to international standards such as ASTM, EN, BS, JIS and GB, which can meet different project requirements.

Q: Can you provide MTC (Mill Test Certificate) for each batch?

Q: What is the yield strength of your structural steel?

Q: Do you accept customized sizes and lengths?

Q: Can you offer anti-corrosion treatment like painting or galvanizing?

Q: What packaging and loading methods do you use?

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.