swaziland AS1163 Steel Pipes

​

AS1163 steel pipes

Standard: AS 1163

Grade: C250, C250L0, C350, C350L0, C450, C450L0

Outside diameter: 20-660mm                     Wall Thickness: 1.3-16mm

Outside diameter: 20*20-1200*1200mm  Wall Thickness: 1.3-50mm

Outside diameter: 20*30-1500*1200mm  Wall Thickness: 1.2-50mm

The Wall Thickness Tolerance: ±5%

Length: normally 5.8m, 6m, 12m or as your required

Surface Treatment: Bare Finish, Painting, Oiling, Galvanzation, 3PE, FBE coated......

Overview of AS1163 Steel Pipes:

AS1163 is an Australian standard for cold-formed structural steel hollow sections, widely used in construction and infrastructure projects. 

Standard Definition and Scope:

AS1163:2016, titled "Cold-formed structural steel hollow sections", specifies requirements for dimensions, materials, manufacturing processes, and mechanical properties of steel pipes. It applies to square, rectangular, circular, and custom-shaped hollow sections used in:

• Building structures

• Bridges and towers

• Coastal engineering and piling projects .

Key Features of AS1163 Steel Pipes:

•Material Grades: Common grades includeG350 (e.g., used in New Zealand road maintenance projects) andC350 (listed in supplier inventories) .

•Manufacturing: Produced through cold-forming processes, ensuring high strength and dimensional accuracy .

•Applications:

•Piling: Used in foundation support for roads, bridges, and buildings .

•Infrastructure: Transporting oil, gas, and water pipelines .

The uniqueness of AS1163 steel pipe is mainly reflected in its standard design, material properties, manufacturing process and application adaptability.

Strict Standards And Technological Advantages 
1. Cold forming manufacturing process 
• The use of cold forming technology (rather than hot rolling) ensures higher dimensional accuracy and surface finish, reduces internal stress in the material and improves resistance to deformation. 
• Compared to hot-rolled tubes, cold-formed tubes have a more uniform wall thickness and are suitable for precision structures (e.g. building frames, mechanical components).

2. Material classification and strength 
• C350 and G350 grades: 
• C350 (for ordinary structures) : tensile strength ≥430 MPa, yield strength ≥350 MPa, suitable for general building support. 
• G350 (for high corrosion resistance environment) : By zinc plating or coating treatment, corrosion resistance is stronger, suitable for coastal engineering, bridge pile foundation and other wet/salt spray environment. 
• The grading is clear, and the user can select the material precisely according to the load and the environment.

Multi-functional Design And Scene Adaptation 
1. Diversified cross-section shapes 
• Support round, square, rectangular and shaped sections to meet different mechanical requirements: 
• Excellent torsional resistance of circular tube (such as tower structure); 
• Rectangular tubes facilitate connection and space use (e.g. building frames).

2. Extreme environmental applicability 
• Anti-corrosion treatment: 3LPE (three-layer polyethylene coating), hot spray aluminum and other processes can be selected to extend the life of the pipeline in chemical industry and Marine engineering. 
• Large diameter thick wall pipe (such as OD 4,064 mm, wall thickness 25.4 mm) : used for deep foundation pile foundation, supporting super high-rise buildings or cross-sea Bridges.

International Compliance And Supply Chain Assurance 
1. Multi-standard compatibility 
• It also meets international standards such as API 5L (pipeline pipe) and ASTM A500 (American standard structural pipe) to facilitate global project procurement. 
• Pass third-party certification (e.g. SGS, TUV) to ensure export compliance.

Unique value in practical application 
1. Cost-effective structure scheme 
• The cold forming process reduces energy consumption and material waste, and the cost is 10%~15% lower than that of hot rolled tubes. 
Lightweight designs (such as thin-walled pipes) reduce transportation and installation costs.

2. Engineering safety and life assurance 
• Rigorous non-destructive testing (UT/RT) and mechanical properties testing (tensile, bending) to ensure no internal defects. 
• In the Sydney Harbour expansion project in Australia, AS1163 G350 steel pipe pile still has no significant corrosion after 20 years of use, verifying its durability.

Summary

The AS1163 steel pipe is unique in that: 
1. High precision and strength brought by cold forming process; 
2. The graded materials are adapted to diverse scenarios (such as corrosive environments); 
3. International compliance and fast supply chain support; 
4. Large size/shaped section to meet special engineering needs.

These advantages make it dominant in the Asia-Pacific infrastructure market (such as Australia and New Zealand, Southeast Asia), and gradually expand to high-difficulty projects around the world.

​