Products Introduction

AS/NZS 1163 cold-formed box section shaped at ambient temperature from a single strip of steel, deforming them through pressure without changing their temperature. No heat treatment is needed, unless in special circumstances.This process Production Advantage:

box section with smaller, denser grains
offering greater hardness and strength
can prevent rust and oxidation

2. Coating: AS/NZS 1163 cold-formed box section suitable for coating: Bare, hot-dip galvanized, oiling, 3PE ect.

3. Application field: Due to its excellent structural strength, weldability, and dimensional accuracy, it is widely used in the construction sector in Australia and New Zealand.

A typical examples is the Melbourne Federation Centre, where a large number of AS/NZS 1163 cold-formed box section are used as load-bearing columns and framework structures.

AS/NZS 1163 cold-formed box section have stable mechanical properties and high yield strength, which not only support large vertical loads in the building structure but also resist wind and seismic lateral forces.
AS/NZS 1163 cold-formed box section regular cross-section can ensure a clean structural appearance, enhancing aesthetic appeal and a sense of modernity.
AS/NZS 1163 cold-formed box section after being galvanized for corrosion protection, it becomes more suitable for the Australian climate.
AS/NZS 1163 cold-formed box section has relatively small size tolerances, which can reduce the construction time and cost caused by complex construction and improve construction efficiency.

Size Description

	Out Diameter	Wall Thickness	Length
Circle box section	1/2 INCH ---- 24 INCH	SCH 10,20,40,80	1M ---- 18M
Square box section	20MMX20MM ---- 1200MMX1200MM	1.5MM ---- 50MM	1M ---- 35M
Recutangular box section	20MMX10MM ---- 1500MMX1000MM	1.5MM ---- 50MM	1M ---- 35M

If you have special size requirements, please feel free to contact us for inquiries.

And the wall thickness tolerance: ±10%

Chemical Composition

Grades (See Note 1)	Chemical composition (cast or product analysis) (See Notes 2) % max
Grades (See Note 1)	C	Si	Mn	p	S	Cr	Mo	Al (See Note 3)	Ti	micro-alloying elements	CE (See Note 4)
C250 C250L0	0.12	0.05	0.50	0.03	0.03	0.15	0.10	0.10	0.04	0.03 (See Note 5)	0.25
C350 C350L0	0.20	0.45	1.60	0.03	0.03	0.30	0.10	0.10	0.04	0.15 (See Note 6)	0.43
C450 C450L0	0.20	0.45	1.70	0.03	0.03	0.30	0.35	0.10	0.04	0.15 (See Note 6)	0.43
NOTES: 1. The use of sulphide modification manufacturing techniques for these grades is permitted
2. The following elements may be present to the stated: (a) Copper 0.25% (b) Nickel 0.25%
3. Limits specified are for soluble or total aluminium
4. Carbon equivalent (CE) is calculated from the following equation: CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15
5. Only applicable to niobium and vanadium only. But niobium not allowed to exceed 0.010% 6. Only applicable to niobium, vanadium and titaniumonly. But vanadium not allowed to exceed 0.10%

Mechanical Properties

Grade	Minimum yield strength MPa	Minimum tensile strength MPa	Minimum elongation as a proportion of the gauge length of 5. 65 S₀% (See Note)
			Circle hollow sections d₀ / t			Rectangular hollow sections b/t , d/t
			≤15	＞15≤30	＞30	≤15	＞15≤30	＞30
C250 C250L0	250	320	18	20	22	14	16	18
C350 C350L0	350	430	16	18	20	12	14	16
C450 C450L0	450	500	12	14	16	10	12	14