ERW steel pipe used for belt-type conveyer roller

2018-03-29

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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2023-06-02