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Cold formed welded structural hollow sections of non-alloy and fine grain steels.

Cold formed welded structural hollow sections of non-alloy and fine grain steels.

Category:

Steel Tube

Brief description:

Cold formed welded structural hollow sections of non-alloy and fine grain steels.

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Product Description

Square And Rectangular Hollow Section Specification Table

Material	Min Yield Strength (N/mm2)		Tensile Strength (N/mm2)		Min. Elongation (%)
	Thickness in mm				Min. Elongation (%)
	t<16	16>t<40	t<3	3>t<40	t<40
S235JRH	235	225	360-510	340-470	24
S275J0H	275	265	430-580	410-560	20
S275J2H	275	265	430-580	410-560	20
S355J0H	355	345	510-680	490-630	20
S355J2H	355	345	510-680	490-630	20

Manufacturing Tolerances:

Characteristic	Round Hollow Sections	Square and Rectangular Hollow Sections
Outside Dimension	± 1% with min ± 0.5mm and max ± 10mm	± 1% with min of ± 0.5mm
Thickness (T)	T≤5mm: ±10%	T≤5mm: ±10%
Thickness (T)	T>5mm: ± 0.5mm	T>5mm: ± 0.5mm
Out-of-Roundness	2%	-
Convexity	-	Max .8% with min 0.5mm
Squareness of side	-	90° ± 1°
External Corner Profile	-	T≤6mm: 1.6T to 2.4T
	-	6<T≤10mm: 2.0T to 3.0T
	-	T,10: 2.4T to 3.6T
Twist	-	2mm plus 0.5mm/m
Straightness	0.2% of total	0.15% of total
Mass	±6% on individual length

Packing

In bare bundle with steel band,or in bulk. Standard lengths are 6, 8 and 12 meter.

Marking

Each of the square and rectangular hollow sections shall be marked with the following information.
a)manufacturer's name b)specification designation c)grade letter d)dimension e)heat number

Inspection and Testing

EN 10219 is subject to tensile testing in accordance with EN 10002-1, charpy impact test in accordance with EN 10045-1.