AS 1163 Specifications

erw carbon steel pipe

AS 1163 is the Australian/New Zealand Standard for Cold-formed structural steel hollow sections. This Standard specifies the requirements for the production and supply of cold-formed, electric resistance-welded, steel hollow sections used for structural purposes.

Manufacturing Process of AS 1163 Steel Pipe

The journey of AS 1163-compliant steel pipes involves a meticulous manufacturing process.

Material Selection:

The process begins with the selection of high-quality steel that adheres to the specific requirements of AS 1163, ensuring optimal chemical properties and mechanical strength.

As per the AS 1163 standard, sampling methods for chemical analysis must be in accordance with AS/NZS 1050.1 or ISO 14284. 

For chemical composition, please

The product AS 1163 analysis tolerances are shown in the table below:

Element Tolerance over maximum limit
Carbon 0.02
Silicon 0.05
Manganese 0.1
Phosphorous 0.005
Sulphur 0.005
Chromium 0.05
Nickel 0.05
Molybdenum 0.03
Copper 0.04
Aluminium (total) -0.005
Micro-alloying elements (niobium and vanadium only) for Grades C250, C250L0 0.06 with niobium no greater than 0.020
Micro-alloying elements (niobium, vanadium and titanium only) for Grades C350, C350L0,C450, C450L0 0.19 with vanadium no greater than 0.12

Forming and Welding:

AS 1163 advanced manufacturing techniques are employed for forming and welding, guaranteeing precise shapes and robust weld integrity. This is fundamental to meeting the AS 1163 structural requirements outlined in the specifications.

AS 1163 finished hollow profiles should be manufactured using a cold forming process and joined at the strip edges using resistance welding techniques. The welds should be longitudinal and the external liner should be removed. There should be no subsequent integral heat treatment of the AS 1163 finished product.

as 1163

AS 1163 Heat Treatment:

AS 1163 may necessitate heat treatment processes based on application and specifications. This enhances the mechanical properties of the steel, ensuring optimal performance under various conditions.

Prior to the tensile or impact test, the AS 1163 specimens shall be heated to between 150°C and 200°C and aged for not less than 15 minutes.

If it is intended to reheat these grades above 620°C, the buyer should discuss the application and proposed reheating treatment with the manufacturer.


TUSPIPE Steel Grades  

C250       C250L0    C350   C350L0   C450   C450L0

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