Electric Resistance Welded Tube | ERW | Harris (Steels) Ltd
Harris Steels | Quality steel stockholders in Halesowen, West Midlands. Harris (Steels) are a quality driven Steel Stockholder and Processor, fully accredited with ISO 9001:2015 quality management systems.
Quality steel stockholders in Halesowen, West Midlands.
44
portfolio_page-template-default,single,single-portfolio_page,postid-44,bridge-core-1.0.4,qode-listing-1.0.1,qode-quick-links-1.0,ajax_fade,page_not_loaded,,qode_grid_1300,footer_responsive_adv,qode-content-sidebar-responsive,qode-child-theme-ver-1.0.0,qode-theme-ver-18.0.9,qode-theme-bridge,bridge-child,wpb-js-composer js-comp-ver-5.7,vc_responsive
 

Electric Resistance Welded / ERW Tube

ERW Round Tube

OdWtKg/mLDc

12.7

x

1.2

0.34

6.0

S2

1.5

0.41

15.88

x

1.2

0.43

6.0

S2

1.5

0.53

2.0

0.68

19.05

x

1.2

0.53

6.0

S2

1.5

0.65

2.0

0.84

22

x

1.5

0.76

6.0

S2

2.0

0.99

25

x

1.5

0.87

6.0

S2

2.0

1.13

25.4

x

2.5

1.41

6.0

S2

28.58

x

1.5

1.00

6.0

S2

31.75

x

1.2

0.90

6.0

S2

1.5

1.12

2.0

1.47

38.1

x

1.5

1.35

6.0

S2

2.0

1.78

40

x

2.0

1.87

6.3

S1

50.8

x

1.5

1.82

6.0

S2

2.0

2.41

3.0

3.54

Wt < 1.2 mm, E190/E220 CR2 S3 Wt > 1.5 mm, E220 CR2 S2

Dimensional Tolerances

Outside diameter (Od) mmWall thickness (Wt) mm

Tolerance band

Tol ± (mm)

Tolerance band

Tol ±

12.7

19.0

0.12

1.2

1.5

0.15

20.0

30.0

0.15

1.5

3.0

10%

32.0

42.4

0.20

44.0

51.0

0.25

Bar Length (L) m

Tol (mm)

6

+100 -0

Where diameter is not included the next greater tolerance is applied

Diameter tolerances include ovality

Where tolerance bands overlap, the greater value is applied

ERW Square Tube

HxB (mm)Wt (mm)Kg/mL (m)Dc

16 x 16

x

1.5

0.68

6.0

S2

19 x 19

x

1.2

0.67

6.0

S2

1.5

0.82

2.0

1.06

22.2 x 22.2

x

1.2

0.79

6.0

S2

1.5

0.97

25 x 25

x

1.5

1.10

6.0

S2

30 x 30

x

1.5

1.34

6.0

S2

40 x 40

x

1.5

1.81

6.0

S2

50 x 50

x

1.5

2.28

6.0

S2

Wt < 1.2 mm, E190/E220 Wt > 1.5 mm, E220

Dimensional Tolerances

External dimensions (H x B) mm>Wall thickness (Wt) mm

Tolerance band

Tol ±

Tolerance band

Tol ±

16×16

20×20

0.20

1.2

1.5

0.15

25×15

35×35

0.25

1.5

3.0

10%

40×20

50×50

0.30

Squareness of section

Tolerance band

Tol ± °

16

50

1.0

Bar Length (L) m

Tol (mm)

6

+100 -0

Where size is not included the next greater tolerance is applied

Where tolerance bands overlap, the greater value is applied

ERW Rectangular Tube

HxB (mm)Wt (mm)Kg/mL (m)Dc

30 x 10

x

1.5

0.87

6.0

S2

30 x 15

x

1.5

1.00

6.0

S2

30 x 20

x

1.5

1.10

6.0

S2

2.0

1.44

40 x 10

x

1.5

1.10

6.0

S2

40 x 20

x

1.5

1.34

6.0

S2

50 x 25

x

1.5

1.69

6.0

S2

Wt ≤ 1.2 mm, E190/E220 Wt ≥ 1.5 mm, E220

Dimensional Tolerances

External dimensions (H x B) mm>Wall thickness (Wt) mm

Tolerance band

Tol ±

Tolerance band

Tol ±

16×16

20×20

0.20

1.2

1.5

0.15

25×15

35×35

0.25

1.5

3.0

10%

40×20

50×50

0.30

Squareness of section

Tolerance band

Tol ± °

16

50

1.0

Bar Length (L) m

Tol (mm)

6

+100 -0

Where size is not included the next greater tolerance is applied

Where tolerance bands overlap, the greater value is applied

ERW Round Tube, ERW Square Tube and ERW Rectangular Tube


to spec BS EN10305: 2010 E190 & E220

Harris Steels steel stock holders Halesowen midlands
ERW round-tube
Harris Steels steel stock holders Halesowen midlands
ERW square tube
Harris Steels steel stock holders Halesowen midlands
ERW rectangular tube

HxB – External Height x Base
Od
– Outside diameter
Wt – Wall thickness
Kg/m – Kilos per linear metre
L – Standard bar length
Dc – Delivery condition:
– S1 – Black dry
– S2 – Pickled with light oil


Contact Harris Steels if you would like to request a price, place an order, or have any further questions about our Electric Resistance Welded (ERW) Round, Square and Rectangular Tube steel range.

About this product

Electric Resistance Welded tube (ERW) is a strong very light weight product sometimes called precision tube due to its high quality surface finish and close manufacturing tolerances. ERW’s are rolled using the same cold forming process as structural hollow sections but are not used in structural or load bearing applications, instead the product is extensively used for furniture manufacture and shop display racking where light loading and a high quality surface finish are critical without extra processing.

Thicknesses of 1.5 mm and above are generally rolled from hot rolled pickled and oiled (HRPO) coil. Acid pickling removes the hot rolled (HR) coil surface scale and exposes the clean bare steel beneath, a thin oil is then applied to protect the steel from oxygen and other environmental factors during transport and storage that will cause material degradation.

Thicknesses below 1.5 mm are rolled using cold reduced (CR) coil as HR coil is not available below this thickness. For applications requiring a higher quality surface finish ERW tube rolled using CR material is available up to 3 mm thickness however this is not a standard product due to higher material costs. HRPO is a very good quality product and suitable for most applications.

The material is characterised by a bright silver finish with light oil and small raised internal weld seam. The profile is accurate and corner radii are small, external tolerances start at +/- 0.2 mm with +/- 10% applicable to wall thickness. As a standard product ER

 

 

 

 

 

 

W tube is not supplied with a mechanical cert due to the material being unsuitable for load-bearing applications. Ins

tead, the low yield point and chemical values lend themselves to being easily machined, cold formed and fabricated into many demanding geometries.

ERW is manufactured to both metric and imperial dimensions in the UK, standard lengths are limited to 6 metres on all sizes however bespoke lengths are available on request at relatively short lead-times when compared to merchant bar and other hot rolled products.

At Harris Steel Ltd, we provide a range of ERW Tubes. Our range includes ERW square tube, ERW round tube and ERW rectangle tubes.

Specification stocked:

BS EN10305: 2010 E190 & E220

Product range:

Square: 16 x 16 x 1.5 mm up to 50 x 50 x 1.5 mm

Rectangular: 30 x 10 x 1.5 mm up to 50 x 25 x 1.5 mm

Round: 12.7 x 1.2 mm up to 50.8 x 3 mm

Sectors of use:

  • Light agriculture
  • Engineering
  • Fencing and Security
  • Furniture
  • Presswork
  • Seating
  • Shop fitting and Display stands
  • Storage and Handling