Thickness tolerance of narrow strip and coil cut strip II (GB/T 3280-2015)

Unit (mm)

Nominal thickness PT.A PT.B
Nominal thickness Nominal thickness
<125 125~<250 250~<600 <125 125~<250 250~<600
0.05~<0.10 ±0.10t ±0.12t ±0.15t ±0.06t ±0.10t ±0.10t
0.10~<0.20 ±0.010 ±0.015 ±0.020 ±0.008 ±0.012 ±0.015
0.20~<0.30 ±0.015 ±0.020 ±0.025 ±0.012 ±0.015 ±0.020
0.30~<0.40 ±0.020 ±0.025 ±0.030 ±0.015 ±0.020 ±0.025
0.40~<0.60 ±0.025 ±0.030 ±0.035 ±0.020 ±0.025 ±0.030
0.60~<1.00 ±0.030 ±0.035 ±0.040 ±0.025 ±0.030 ±0.035
1.00~<1.50 ±0.035 ±0.040 ±0.045 ±0.030 ±0.035 ±0.040
1.50~<2.00 ±0.040 ±0.050 ±0.060 ±0.035 ±0.040 ±0.050
2.00~<2.50 ±0.050 ±0.060 ±0.070 ±0.040 ±0.050 ±0.060
2.50~<3.00 ±0.060 ±0.070 ±0.080 ±0.050 ±0.060 ±0.070

Note:

1. The supplier and the buyer negotiate and confirm that the deviation value can be all positive deviation/negative deviation or positive and negative deviation asymmetric distribution, but the tolerance value should be within the range of the list.

2. When the thickness is less than 0.05mm, it is negotiated between the supplier and the buyer.

3. The height of the burr on the edge of the strip should be less than or equal to the nominal thickness of the product × 10%

4. t is the nominal thickness

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