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Low Alloy Steel Coil & Plate

Allowable deviation
Specify the minimum yield strength R. The thickness deviation of the steel strip (including continuous rolling steel plate) less than 360 MPa shall comply with the provisions in Table 3. If the buyer requires higher thickness accuracy (PT.B) to supply, it should be specified in the contract, and if not specified, it should be supplied according to ordinary thickness accuracy (PT.A). According to the requirements of the buyer, the upper and lower deviations of the steel strip can be adjusted within the tolerance range specified in Table 3.
Specify the minimum yield strength R. The thickness deviation of the steel strip not less than 360 MPa (including the continuous rolling steel plate) shall comply with the provisions in Table 4. If the buyer requires higher thickness accuracy (PT.B) to supply, it should be specified in the contract, and if not specified, it should be supplied according to ordinary thickness accuracy (PT.A). According to the requirements of the buyer, the upper and lower deviations of the steel strip can be adjusted within the tolerance range specified in Table 4.
When the yield strength and the thickness tolerance are not specified in the product standard, the thickness tolerance of the steel strip (including continuous rolling steel plate) shall be negotiated by the supplier and the buyer, and shall be specified in the contract.

Table 3
Nominal ThicknessSteel Strip Thickness Tolerance
Normal Precision  PT.AHigher Precision  PT.B
Nominal WidthNominal Width
600-1200>1 200-1500>1500-1800>1800600-1200>1 200-1500>1500-1800>1800
≤1.50±0,15±0.17±0.10±0.12
>1.50-2.00±0.17±0.19±0.21±0.13±0.14±0.14
>2.00-2.50±0.18±0.21±0.23±0.25±0.14±0.15±0.17±0.20
>2.50-3.00±0.20±0.22±0.24±0.26±0.15±0.17±0.19±0.21
>3.00-4.00±0.22±0.24±0.26±0.27±0.17±0.18±0.21±0.22
>4.00-5.00±0.24±0.26±0.28±0.29±0.19±0.21±0.22±0.23
>5.00-6.00±0.26±0.28±0.29±0.31±0.21±0.22±0.23±0.25
>600-800±0.29±0.30±0,31±0.35±0.23±0.24±0.25±0.28
>800-10.00±0.32±0.33±0.34±0.40±0.26±0.26±0.27±0.32
>10,00-12.50±0.35±0.36±0.37±0.43±0.28±0.29±0.30±0.36
>12.50-15.00±0.37±0.38士0.40±0.46±0.30±0.31士0.33±0.39
>15,00-25.40±0.40±0.42±0.45±0.50±0.32±0.34±0.37±0.42



Table 4
Nominal ThicknessSteel Strip Thickness Tolerance
Normal Precision  PT.AHigher Precision  PT.B
Nominal WidthNominal Width
600-1200>1 200-1500>1500-1800>1800600-1200>1 200-1500>1500-1800>1800
≤1.50±0,17±0.19±0.11±0.13
>1.50-2.00±0.19±0.21±0.23±0.14±0.15±0.15
>2.00-2.50±0.20±0.23±0.25±0.28±0.15±0.17±0.17±0.22
>2.50-3.00±0.22±0.24±0.26±0.29±0.17±0.19±0.21±0.23
>3.00-4.00±0.24±0.26±0.29±0.30±0.19±0.20±0.23±0.24
>4.00-5.00±0.26±0.29±0.31±0.32±0.21±0.23±0.24±0.25
>5.00-6.00±0.29±0.31±0.32±0.34±0.23±0.24±0.25±0.28
>600-800±0.32±0.33±0,34±0.39±0.25±0.26±0.28±0.31
>800-10.00±0.35±0.36±0.37±0.44±0.29±0.29±0.30±0.35
>10,00-12.50±0.39±0.40±0.41±0.47±0.31±0.32±0.33±0.40
>12.50-15.00±0.41±0.42士0.44±0.51±0.33±0.34士0.36±0.43
>15,00-25.40±0.44±0.46±0.50±0.55±0.35±0.37±0.41±0.46


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