Stainless Flat Tubes - Gual Steel

gualstainless.com

Stainless Flat Tubes - Gual Steel

3 / 2004

Stainless Flat Tubes


Stainless Flat Tubes

Flat tubes are stainless, flat-profile hollow sections made by Stalatube. Compared

with ordinary, solid flat steel, flat tubes are light, strong and economical in cost.

Constructions built from Stalatube stainless flat

tubes fulfil the Finnish R30 fire resistance requirement

as they are, without surface coatings. The company

operates in accordance with the

ISO 9002 / SFS-ISO standard, and the hollow sections

that it manufactures have the Ü-mark, awarded by

DIBt (Deutsches Institut für Bautechnik).

Why use Stalatube stainless flat tubes in constructions

instead of flat steel?

• The use of Stalatube flat tubes lowers material

costs

• In comparison with flat steel, the exterior

dimensions of the construction remain the

same, but the weight is only about 60-70 %

• With flat tubes, you can built structures that

are thinner and yet have sufficient strength

• Image and appearance: the stainless steel

surface is maintenance-free and always looks

new. It withstands weather fluctuations and

climatic stress.


Uses

Flat tubes are used for their durability and hygienic

properties, in indoor and outdoor applications,

including:

• decorative use, e.g. facade constructions

• door and window structures

• gratings and sun blinds

• railing structures indoors and outdoors

• shelters for bus-stops etc. and other street/park

constructions

• kick mouldings of maintenance walkways

• conveyors for the foodstuffs industry

• trailers

Dimensions

Stalatube Oy flat tubes are made in nine dimensions,

40 x 10 mm - 100 x 20 mm, wall thickness 1.5 or 2

mm.

Surface finishes

• hot- or cold-rolled, lightly brushed

• normal polishing Grit 220 - 400

• pickled surface

• other surface finishes by arrangement

Cut length service brings cost savings

The Stalatube Oy cut length service supplies flat

tubes cut to specified lengths and angles. The normal

stock length of hollow sections is 6 metres.

Material Certificates

We supply material certificates to order, in

accordance with the standard EN 10088/3.1.B or

ASTM A554. From our website,

www.stalatube.com / PARTNER SERVICE,

a registered client of Stalatube can download a

material certificate on the basis of the smelting

number of the batch.

Packing

Unpolished tubes are delivered in bundles bound

with plastic bands. Polished and surface-finished

flat tubes are packed singly in a plastic sleeve and

bound into bundles with plastic bands. All the

bundles are packed in perforated plastic. All the

packing materials are recyclable. One bundle

contains 36 pieces, totalling 216 metres in all.


MVPV / EDD / Markprint 2004

A comparsion of Flat Steel and Flat

Tubes

Table 2 compares the weights of flat tubes and solid

flat steel of the same exterior dimensions.

By using flat tubes in suitable applications, it is

possible to achieve substantial savings in weight

and costs. Flat tubes have a small corner rounding,

as in rolled flat steel. They are therefore safe in use

and stylish in appearance.

h

t

b

Tolerances for Stalatube flat tubes (Table 1)

Dimension

Tolerance

Exterior dimensions h, b

Material thickness t

Perpendicularity

Side convexity x 1

Side concavity x 2

Straightness deflection

Twisting V

Length

Length*

6000 mm

20-9000 mm

± 1 %

± 10 %

90° ± 1°

max. 0,8 %

min. 0,5 mm

max. 0,15 %

2 mm + 0,5 mm/m

+20 mm/-0 mm

+1 mm/-0 mm

* The length tolerance for precision cut flat tubes is +/- 1 mm

Weights of flat steel and flat tubes (Table 2)

Dimensions

(mm)

10 x 40

10 x 50

10 x 60

10 x 80

20 x 100

Flat steel

Weight

(kg/m)

3,14

3,93

4,71

6,28

15,70

Dimensions

(mm)

40 x 10 x 1,5

40 x 10 x 2,0

50 x 10 x 1,5

50 x 10 x 2,0

60 x 10 x 1,5

60 x 10 x 2,0

80 x 10 x 1,5

80 x 10 x 2,0

100 x 20 x 2,0

Flat tubes

Weight

(kg/m)

1,146

1,495

1,371

1,840

1,620

2,150

2,122

2,804

3,711

Weight difference

kg/m

1,994

1,645

2,669

2,090

3,090

2,560

4,158

3,476

11,989

Properties of Stalatube flat tubes (Table 3)

h

mm

b

mm

t

mm

Paino

kg/m

A

mm 2

ly Wy ly

10 4 mm 4 10 3 mm 3 mm

lz Wz iz

10 4 mm 4 10 3 mm 3

mm

lv

10 4 mm 4 Wv

10 3 mm 3

40

10

1,50

1,146

135

2,15

1,07

12,61

0,213

0,42

3,97

0,70

0,81

40

10

2,00

1,495

173

2,59

1,29

12,23

0,245

0,49

3,76

0,83

0,94

50

10

1,50

1,371

165

4,00

1,60

15,56

0,268

0,54

4,03

0,92

1,03

50

10

2,00

1,840

215

4,91

1,96

15,10

0,310

0,62

3,80

1,09

1,20

60

10

1,50

1,620

195

6,67

2,22

18,50

0,329

0,65

4,07

1,13

1,25

60

10

2,00

2,150

253

8,29

2,76

18,10

0,375

0,75

3,85

1,35

1,46

80

10

1,50

2,122

255

15,10

3,78

24,34

0,430

0,87

4,12

1,57

1,69

80

10

2,00

2,804

333

19,06

4,77

23,92

0,510

1,01

3,90

1,87

1,99

100

20

2,00

3,711

453

46,11

9,22

31,90

3,290

3,29

8,52

10,94

6,26

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