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ERW steel pipe used for belt-type conveyer roller
Mar 29, 2018

Specification of ERW steel pipe used for belt-type conveyer roller (GB/T13792-2008)

  OD

  (mm)

Thickness

    (mm)

  Theoretical      Weight

      (kg/m)

                                           Allowable   Tolerance

                      OD±

           Thickness±

Thickness   tolerance 

in same section

Common   Level

Higher   Level

Common   Level

Higher   Level

63.5

3.2

4.76

0.50

0.30

0.32

0.24

≤7.5%

4.5

6.55

0.45

0.34

76

3.2

5.74

0.50

0.30

0.32

0.24

4.5

7.93

0.45

0.34

89

3.2

6.77

0.60

0.40

0.32

0.24

4.5

9.38

0.45

0.34

108

3.2

8.27

0.70

0.40

0.32

0.24

4.5

11.49

0.45

0.34

133

4.5

14.26

0.80

0.60

0.45

0.34

5.0

15.78

0.50

0.38

159

4.5

17.14

0.90

0.60

0.45

0.34

5.0

18.99

0.50

0.38

6.0

22.64

0.60

0.45

194

5.0

23.30

1.0

0.80

0.50

0.38

6.0

27.32

0.60

0.45

219

5.0

26.39

1.1

0.80

0.50

0.38

6.0

31.52

0.60

0.45

Remark:

1.ERW steel pipe length is usually 4 to 10 meters.

2.Steel pipe fixed length should be within the usual length range. The length allowable tolerance is +15mm.

3.Steel tube double length is within the usual length. It should be leave 5~10mm cut margin between each double length. The allowable tolerance of steel pipe total length is +15mm.

4.Bending of common precision steel tube is ≤1.0mm/m. Bending of higher precision steel pipe is ≤0.5mm/m.

5.Both ends of steel pipe should be perpendicular to the center line. And it need to removing burrs.

6.The roundness of the welded steel pipe shall not exceed half of the outer diameter tolerance. 


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