Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.AS/NZS 1163 C450 Steel Hollow Section is a high-strength cold-formed structural steel hollow section available in RHS, SHS and CHS profiles. Manufactured according to AS/NZS 1163 standards, C450 offers a minimum yield strength of 450 MPa, providing excellent load-bearing capacity and structural efficiency for mining, industrial, construction and infrastructure applications.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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AS/NZS 1163 C450 is a high-strength structural steel grade specified in the Australian/New Zealand standard AS/NZS 1163 (“Cold-formed structural steel hollow sections”); it is primarily used to manufacture CHS (Circular Hollow Sections), SHS (Square Hollow Sections), and RHS (Rectangular Hollow Sections).
C450 is a high-strength structural steel grade under AS/NZS 1163; it offers a higher load-bearing capacity than the common C250 and C350 grades, making it suitable for large-scale steel structures and heavy-duty engineering projects.
Dimension / OD Range:
RHS 20 × 10 mm – 500 × 300 mm (Width × Height)
SHS 20 × 20 mm – 500 × 500 mm (Side × Side)
CHS 21.3 mm – 508 mm OD
W.T.:
2.0 – 16 mm
Length:
6-12 m, available in fixed or multiple lengths; custom lengths per project requirements.
Tube Ends& Surface Treatment:
Square, Chamfered; Black Skin, Pickled, Painted/Oiled for Rust Prevention
Manufacturing Process:
Cold Formed + ERW Welding
Application:
Structural Load-bearing Applications
Product Form:
RHS / SHS / CHS
Standard Name:
Cold-formed structural steel hollow sections
C450 RHS (Rectangular Hollow Section)
Applications:
C450 SHS (Square Hollow Section)
Applications:
C450 CHS (Circular Hollow Section)
Applications:
| Product Type | Outside Dimension Range | Wall Thickness |
| C450 RHS | 20 × 10 mm – 500 × 300 mm | 2.0–16 mm |
| C450 SHS | 20 × 20 mm – 500 × 500 mm | 2.0–16 mm |
| C450 CHS | 21.3–508 mm OD | 2.0–16 mm |
The above dimensions represent common size ranges of C450 hollow sections. For complete RHS, SHS and CHS dimensions, including outside dimensions, wall thicknesses, unit weights and section properties, please visit:
Reduce:
Suitable for:
Typical requirements are as follows:
| Element | Maximum (%) |
| Carbon (C) | ≤ 0.20 |
| Silicon (Si) | ≤ 0.45 |
| Manganese (Mn) | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Carbon Equivalent (CE) | ≤ 0.43 |
C450 typically employs a low-carbon micro-alloyed design, utilizing elements such as Mn, Nb, V, and Ti to enhance strength while maintaining good weldability.
| Property | C450 Requirement |
|---|---|
| Minimum Yield Strength | ≥ 450 MPa |
| Minimum Tensile Strength | ≥ 500 MPa |
| Elastic Modulus | 200,000 MPa |
| Density | 7,850 kg/m³ |
Depending on the cross-sectional dimension ratios (d/t or b/t):
| Section Ratio | Minimum Elongation |
| ≤15 | 12% |
| 15–30 | 14% |
| ＞30 | 16% |
Elongation requirements for rectangular hollow sections (RHS) vary depending on the width-to-thickness ratio (w/t, d/t).
The key advantage of AS/NZS 1163 C450 steel hollow sections is that they allow for reduced steel weight and improved structural efficiency while meeting structural strength requirements.
ALLLAND has experience supplying steel pipe and hollow section solutions for demanding industrial applications, including mining-related structures, equipment support systems, conveyor structures, and heavy-duty steel frameworks.
By understanding the requirements of mining and industrial environments, ALLLAND provides structural steel products with consistent mechanical properties, strict quality inspection, and reliable delivery performance.
| Industry | Applications | Recommended Section | Key Performance Requirements |
| Mining & Resources | Conveyor systems, processing plants, equipment platforms | RHS / SHS | High strength, fatigue resistance, corrosion protection |
| Construction | Steel buildings, columns, beams, trusses | RHS / SHS / CHS | Load-bearing capacity, dimensional accuracy |
| Infrastructure | Bridges, transport facilities, public structures | CHS / RHS | Structural stability, durability |
| Industrial Manufacturing | Factory frames, machinery supports, pipe racks | RHS / SHS | Weldability, fabrication performance |
| Energy Projects | Power plants, support structures, industrial frames | CHS / RHS | Long service life, reliable performance |
| Heavy Fabrication | Custom steel structures and fabricated components | RHS / SHS / CHS | Custom dimensions, consistent quality |
ALLLAND supplies AS/NZS 1163 C450 steel hollow sections for mining, industrial, construction, and infrastructure projects. With advanced manufacturing capabilities and strict quality control, we provide customized solutions with reliable performance and on-time delivery.
AS/NZS 1163 C450 is available with various surface finishes depending on the application environment:
1. Black Steel Surface (Black/As-rolled finish)
2. Hot-Dip Galvanized
Typical Zinc Coating (common)
| Standard | Coating |
| HDG | ≥70 μm (typical) |
| Heavy Duty | Customized |
3. Painted Coating
4. Custom Coating
Available upon project requirements:
| Grade | Yield Strength | Tensile Strength | Application |
|---|---|---|---|
| C250 | ≥250 MPa | ≥320 MPa | General structures, light-duty frames |
| C350 | ≥350 MPa | ≥430 MPa | Building structures, industrial frameworks |
| C450 | ≥450 MPa | ≥500 MPa | High-strength load-bearing structures |
Compared to C250, C450 offers:
AS/NZS 1163 C450 Steel Hollow Section is a high-strength cold-formed structural steel hollow section manufactured according to the AS/NZS 1163 standard. It includes RHS, SHS and CHS profiles with a minimum yield strength of 450 MPa, widely used in heavy-duty structural applications.
Yes. C450 steel hollow sections have good weldability and can be fabricated using common welding methods, including:
Proper welding procedures should be followed according to project requirements.
ALLLAND provides:
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