AS/NZS 1163 C350/C450 HOLLOW STRUCTURAL SECTION

TIASCO Dual Grade RHS (Rectangle Hollow Section) and CHS (Circular Hollow Section)

AS/NZS 1163 C350/C450 RHS is a range of structural and general-purpose cold formed electric resistance welded square and rectangular hollow sections.

AS/NZS 1163 C350 RHS, These products are manufactured to meet the mechanical property requirements of both C350 and C450 and are suitable for welding and limited bending.

C350/450L0 hollow sections are suited to load-bearing applications, have good torsional strength, impact strength and high strength to weight ratio. Typical applications include agricultural, general engineering, mechanical handling and structural.

Tolerances

The tolerances on dimensions are established in accordance with AS/NZS 1163.

Characteristics				Tolerances
External dimensions				1%, with minimum of 0.5mm
Thickness (t)				10%
Concavity / Convexity				Max. 0.8% or 0.5mm, whichever is greater
Squareness of sides				901
External corner profile				(Equivalent to 50×50 or less)	1.5t to 3.0t
				(Equivalent to greater than 50×50)	1.8t to 3.0t
Twist				2mm+0.5mm/m in length
Straightness				0.15% of total length
Mass per unit length				Not less than 0.96 times the specified mass on individual lengths
Length	Mill (or ‘unspecified’) length			0, +100mm
	Precision length
		L6,000mm		0, +5mm
		6,000mmL10,000mm		0, +15mm
		10,000mm L		0, +5mm+1mm/m
NOTE 1)The External dimensions are measured across the flats at positions at least 50mm from the end.

Available size rangeDimensions (mm-size)

Size (mm)		Wall thickness (mm)
Square	Rectangular	1.6	2.0	2.5	3.0	3.5	4.0	5.0	6.0	8.0	9.0	10.0	12.0	12.5	16.0	19.0	22.0
	60×30
50×50
	60×40
	70×40
60×60
	75×45
	75×50
	100×40
75×75
	100×50
80×80
	125×40
	125×50
	102×76
89×89
	127×51
90×90
100×100
	125×75
	150×50
	150×75
	152×76
	150×80
120×120
125×125
	150×100
150×150
	175×125
	200×100
175×175
	200×150
	250×100
200×200
	225×175
	250×150
	300×100
	250×200
	300×150
250×250
	300×200
	350×150
300×300
	350×250
	400×200
350×350
	400×300
400×400
	500×300
450×450
	600×300
500×500
550×550
C350/C350L0 available  C350/C350L0 to be confirmed  C450 available  C450 to be confirmed C450L0 to be confirmed for all range  Color painted C350 pre-galv (pure zinc)  C350 pre-galv (pure zinc only) If you require other sizes, please consult us.