AS/NZS 1163 Steel Pipe
Introduction of AS/NZS 1163 Pipe
The AS/NZS 1163 steel pipe is the prevailing standard in the Australian and New Zealand construction sectors for all steel hollow sections. It encompasses unique testing requirements, including the direction for cutting test pieces, aging of test pieces, mass per length, and external weld upset removal.
1. Scope:
AS/NZS 1163 details the specifications for cold-formed steel hollow sections for structural use, outlining specific criteria for tensile, impact, and cold flattening tests.
2. Varieties & Grades:
- Circular Hollow Sections (CHS): C250, C250L0, C350, C350L0, C450, C450L0
- Rectangular Hollow Sections (RHS): C250, C250L0, C350, C350L0, C450, C450L0
- Square Hollow Sections (SHS): C250, C250L0, C350, C350L0, C450, C450L0
Comparison: AS/NZS 1163 vs. ASTM A53
- Scope: ASTM A53 B pertains to black and hot-dipped, zinc-coated, welded, and seamless steel pipes, while AS/NZS 1163 focuses on cold-formed steel hollow sections.
- Application: ASTM A53 B covers general steel pipes, available in various types. AS/NZS 1163 is versatile, used in pipe piling, oil & gas, and more.
- Chemical Composition: AS/NZS 1163 C250 has a max carbon content of 0.12%, whereas ASTM A53 B’s is 0.3%.
Standard | Grade | Chemical Composition % max | ||||||||||
|
| C | Si | Mn | P | S | Cr | Mo | Al | Ti | Micro-alloying elements | CE |
AS/NZ 1163 | C250 | 0.12 | 0.05 | 0.5 | 0.03 | 0.03 | 0.15 | 0.1 | 0.1 | 0.04 | 0.03 | 0.25 |
C250L0 | ||||||||||||
C350 | 0.2 | 0.25 | 1.6 | 0.03 | 0.03 | 0.3 | 0.1 | 0.1 | 0.04 | 0.15 | 0.43 | |
C350L0 | ||||||||||||
C450 | 0.2 | 0.25 | 1.7 | 0.03 | 0.03 | 0.3 | 0.35 | 0.1 | 0.04 | 0.15 | 0.43 | |
C450L0 | ||||||||||||
ASTM A53 | B | 0.3 | – | 1.2 | 0.05 | 0.045 | 0.4 | – | – | – | – | – |
- Mechanical Properties: AS/NZS 1163 C250 boasts a tensile strength of 320 MPa and yield strength of 250 MPa. In contrast, ASTM A53 B’s tensile strength exceeds 415 MPa with a minimum yield strength of 240 MPa.
Standard | Grade | Tensile Strength | Yield Strength | Impact Test |
(MPa) | (MPa) | (J) | ||
AS/NZS 1163 | C250,C250L0 | 320 | 250 | Impact tests shall be performed at 0°C in accordance with AS 1544.2 |
C350,C350L0 | 430 | 350 | ||
C450,C450L0 | 500 | 450 | ||
ASTM A53 | B | >415 | ≥240 | – |
Mechanical Test Requirements of AS/NZS 1163 Pipe
- Tensile Test: Conducted as per AS 1391, it gauges the force needed to break a material.
- Impact Test: Performed at 0°C following AS 1544.2, it assesses material toughness by measuring energy absorbed during fracture.
- Cold Flattening Test: Executed at room temperature, it involves flattening the test piece between two parallel surfaces, with the weld’s position varying based on the diameter.