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ASTM A500 Square Steel Tube 50×50 100×100 150×150 200×200 250x250mm Structural Hollow Section
| Item | Details |
| Product Name | ASTM A500 Square Hollow Section |
| Standard | ASTM A500 / A500M |
| Grade | Grade B, Grade C |
| Shape | Square Hollow Section (SHS) |
| Material | Carbon Steel |
| Manufacturing Process | Cold-formed Welded |
| Surface | Black, Galvanized, Painted |
| Length | 6m, 12m or Customized |
| Thickness | Customized according to requirements |
| Certificate | MTC, SGS, Inspection Report |
| ASTM A500 Square Hollow Section Steel Tube – Chemical Composition by Grade | |||||
| Grade | Carbon (C) Max | Manganese (Mn) Max | Phosphorus (P) Max | Sulfur (S) Max | Copper (Cu) Min (when specified) |
| ASTM A500 Grade B | 0.26% | 1.35% | 0.04% | 0.04% | 0.20% |
| ASTM A500 Grade C | 0.23% | 1.35% | 0.04% | 0.04% | 0.20% |
| ASTM A500 Grade B / Grade C Square Steel Pipe – Mechanical Properties | |||
| Grade | Yield Strength (Min) | Tensile Strength (Min) | Elongation (Min) |
| ASTM A500 Grade B | 46 ksi (315 MPa) | 58 ksi (400 MPa) | 23% |
| ASTM A500 Grade C | 50 ksi (345 MPa) | 62 ksi (425 MPa) | 21% |
Robust Structural Capability
Manufactured following ASTM A500 norms, our square pipes come with strong tension resistance and load capacity, suited for heavy construction and steel frame setups.
Full Selection of Hot-Selling Sizes
Square Metal Pipes standard sizes such as 50×50mm up to 250×250mm are in stock to match construction, fabrication and industrial project needs.
Simple Welding & Processing
ASTM A500 SHS Hollow Metal Tube weld smoothly and can be cut or drilled effortlessly, simplifying custom structural processing.
Precise Size & Uniform Quality
Tight production control delivers accurate outer measurements, consistent wall thickness and stable mechanical performance for global engineering projects.
Broad Application Coverage
The high strength-to-weight ratio makes them perfect for steel buildings, warehouses, bridges, machine frames, farm constructions and infrastructure works.
Flexible Surface Finishes
Options include black raw steel, galvanized coating and custom anti-corrosion treatment to boost longevity across different working environments.
Global Standard Support & Custom Orders
We supply all ASTM A500 material grades alongside custom thickness, length and packaging, supporting international contractors, distributors and project purchasers.
ASTM steel pipe refers to carbon steel pipe used in oil and gas transmission systems. It is also used to transport other fluids such as steam, water, and mud.
Tube Production Categories
Royal Steel Group fabricates ASTM A500 square tubes with mature production lines to fit various structural and industrial projects.
Hot Rolled Square Tube
Made of hot rolled coils with solid strength and toughness, ideal for heavy-load works including steel workshops, bridges and warehouse frames.
Cold Formed Square Tube
Precision cold forming delivers tight tolerances, sleek surfaces and even wall thickness. Fits machinery parts, metal fabrication and precision structural jobs.
ERW High-Frequency Welded Square Tube
High-frequency electric resistance welding creates firm, leak-free welds with efficient output, widely adopted in construction and municipal infrastructure.
Hot-Dip Galvanized Square Tube
A full zinc coating is applied post-production for superior rust resistance. Perfect for outdoor frames, farm facilities, fencing and solar brackets in damp conditions.
Pre-Galvanized Square Tube
Shaped from pre-galvanized steel strips, featuring neat finish and budget-friendly anti-corrosion performance for light commercial structures.
Custom Processing Service
We accept bespoke specs on tube dimensions, wall thickness, cut lengths, steel grades and surface treatments. OEM & ODM orders are supported for worldwide industrial and construction buyers.
| Application Scenario | Specification (Size × Thickness) |
| Construction & Steel Structure | 50 × 50 × 3.0 mm |
| 75 × 75 × 3.0 mm | |
| 100 × 100 × 4.0 mm | |
| 150 × 150 × 6.0 mm | |
| 200 × 200 × 8.0 mm | |
| Warehouse & Workshop Buildings | 100 × 100 × 4.0–6.0 mm |
| 150 × 150 × 6.0–10.0 mm | |
| 200 × 200 × 8.0–12.0 mm | |
| Infrastructure & Heavy Structures | 250 × 250 × 10.0 mm |
| 300 × 300 × 12.0 mm | |
| 400 × 400 × 16.0 mm | |
| 500 × 500 × 20.0 mm | |
| Solar Mounting & Fence Systems | 40 × 40 × 2.0 mm |
| 50 × 50 × 2.5 mm | |
| 60 × 60 × 3.0 mm | |
| General Technical Parameters | |
| Available Standard | ASTM A500 Grade B, ASTM A500 Grade C |
| Length | 5.8m, 6m, 11.8m, 12m or Customized |
| Surface Treatment | Black, Oiled, Painted, Hot-Dip Galvanized |
| Processing Service | Cutting, Drilling, Welding, Punching, Galvanizing, Custom Fabrication Available |
Contact Us
We supply multiple surface treatments for Grade B/C Carbon Steel Square Tube under ASTM A500 standards, boosting anti-rust performance and adaptability across various working conditions.
Surface Options
Bare Black Steel
Standard factory finish for common structural use, easy for secondary machining and re-coating.
Anti-Rust Oil Coating
Light oil film prevents rust during transit and long-term warehousing.
Red Oxide Primer
Basic anti-corrosion base layer, ready for topcoat paint application.
Hot-Dip Galvanized
Full zinc layer delivers long-lasting rust protection, perfect for outdoor and severe weather scenarios.
Epoxy Coating
Strong bonding and chemical resistance for superior anti-corrosion performance.
Custom Coatings
Customize coating thickness, colors and formulas to match unique project environment demands.
ASTM A500 Grade B Grade C Weld Carbon Steel Square Tube Application
| Feature | Description |
| Robust Load-Bearing Capacity | Raw materials include ASTM A500 B/C with high yield strength to support heavy structural loads |
| Easy Fabrication & Welding | Low-carbon steel composition simplifies welding and machining, lowering processing time and expenses |
| Accurate Uniform Sizing | Full-stage quality checks maintain precise dimensions, straight profiles and even wall thickness |
| Customizable Anti-Rust Finishes | Choose from raw black steel, rust-proof oil, coated paint or hot-dip galvanized surface treatment |
| Great Value for Money | Stable reliable quality paired with market-competitive rates |
Royal Steel Group focuses on the supply of structural steel pipes and hollow section profiles, with extensive track records in cross-border steel exports.
Our sales footprint stretches across major international regions, covering North and South America, the Middle East, Southeast Asia, Africa as well as European countries.
We carry out comprehensive quality checks throughout all production stages, offer competitive pricing, and deliver customized processing plans tailored to individual project demands.
Reliable global logistics channels back our shipments, helping international clients complete their construction and infrastructure projects with better efficiency and controlled overall project costs.
Royal Steel Group adopts professional export packaging for all ASTM A500 Square Steel Tube, effectively avoiding deformation, scratches and moisture damage during long-distance transit.
Standard Packaging
All steel tubes are firmly bundled with steel straps, equipped with pipe end protectors to prevent collision damage. Outer waterproof film and woven bags are applied for moistureproof protection. Wooden pallets or wooden cases are available on request. We also support customized packaging and private labeling for OEM orders.
Container Loading Solutions
20GP containers are ideal for short-length tubes and small-batch orders, while 40GP and 40HQ containers are recommended for large-volume shipments to maximize loading capacity. For super-large project orders, bulk vessel shipping is also accessible.
Flexible Shipping Methods
We mainly adopt cost-effective sea freight for international bulk orders. Rail and truck transportation are provided for inland and regional delivery. Multimodal transportation combining sea, rail and road is available to match different project logistics needs.
Complete Export Documents
We provide a full set of standard export papers for customs clearance, including commercial invoices, packing lists and Mill Test Certificates (MTC). Certificate of Origin (CO) and third-party inspection reports from SGS, BV and other authoritative institutions can be supplied as required.
Reliable Global Supply
Backed by stable production capacity, strict quality management and rich export experience, we deliver qualified ASTM A500 square steel pipes to global clients safely and punctually, providing solid logistics support for various construction, infrastructure and industrial projects.
1. What exactly is an ASTM A500 Square Metal Pipes?
It is a hollow structural steel tube manufactured following ASTM A500 specifications. The material features great structural strength, easy weld processing and precise measurements, perfectly suited for all construction and industrial fabrication work.
2. What square tube dimensions do you offer?
Our regular stock covers 50×50mm, 100×100mm, 150×150mm, 200×200mm and 250×250mm. We can also produce bespoke sizes and wall thicknesses based on your project plans.
3. Where are these square pipes commonly applied?
They are extensively used for steel frameworks, warehouse erection, building columns, mechanical support frames, solar mounting systems and municipal infrastructure builds.
4. What surface finishing options can I choose?
We supply bare black steel, hot-dip galvanized and pre-galvanized tubes, alongside tailor-made anti-rust coatings to fit various outdoor and indoor working conditions.
5. Do you support custom manufacturing and full export service?
Absolutely. We can adjust tube dimensions, cut lengths and packaging as requested. We will also prepare all necessary export paperwork, including mill test certificates, SGS inspection reports and certificates of origin.
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