Mechanical Structure round tub
China [CN] |
Standard
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Outside Diameter（mm）
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Thickness(mm)
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Outside Diameter Tolerance(mm)
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Thickness Tolerance(mm)
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Length Tolerance(mm)
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ASTM A554
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≤12.7
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0.51~1.24
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±0.10
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±10.00%T (10.00% of nominalwall thickness)
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＋4.08 －0
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>12.7~25.4
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0.51~1.65
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±0.13
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>1.65~3.40
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±0.25
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>25.4~38.1
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0.64~1.65
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±0.20
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>1.65~3.40
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±0.25
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>38.1~50.8
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0.64~1.24
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±0.25
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>1.24~2.11
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±0.28
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>50.8~63.5
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>2.11~3.78
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±0.30
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0.81~1.65
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±0.30
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>1.65~2.77
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±0.33
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>63.5~88.9
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>2.77~4.19
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±0.36
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0.81~4.19
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±0.36
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>88.9~127.0
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0.89-4.19
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±0.51
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>4.19
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±0.64
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>127.0~190.5
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1.24~6.35
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±0.64
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>6.35
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±0.76
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>190.5
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±1.0%D
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GB/T 12770
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< 25
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±0.15
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冷轧Cold Rolled≤0.50 ±0.05>0.50~1.00 ±0.11>1.00~2.00 ±0.17>2.00~3.00 ±7.00%S>3.00 ±10.00%S热轧Hot Rolled±10.00%S
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≥25~40
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±0.18
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≥40~50
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±0.20
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≥50~60
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±0.23
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≥60~70
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±0.30
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+20.00
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≥70~80
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±0.30
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-0
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≥80~90
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±0.30
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≥90~100
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±0.40
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≥100~200
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±0.50%D
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≥200
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协议To Be Agreed
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JIS G3446
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<50
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±0.25
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<3.00 ±0.30
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+50-0
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≥50
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±0.5%
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≥3.00 ±10.00%
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