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厚壁無縫鋼管誤(wù)差範圍(wéi)
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偏差等級 |
壁(bì)厚允許偏差 | ||||||
|
S/D | |||||||
|
0.1< S/D |
0.05<S/D≤0.1 |
0.025<S/D≤0.05 |
S/D≤0.025 | ||||
|
S1 |
±15%,最小±0.6 mm | ||||||
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S2 |
A |
±12.5%,最小(xiǎo)±0.4 mm | |||||
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B |
+正偏差取決於重量要求(qiú)
-12.5 | ||||||
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S3 |
A |
±10%,最(zuì)小±0.2mm | |||||
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B |
±10% |
±12.5% |
±15% | ||||
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最小(xiǎo)±0.4mm | |||||||
|
C |
+正偏差(chà)取決於重量要求
-10% | ||||||
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S4 |
A |
±7.5%, 最小±0.15 mm | |||||
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B |
士7.5% |
士10% |
±12.5% |
±15% | |||
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最小士0.2 mm | |||||||
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S5 |
±5%,最小士0.10 mm | ||||||
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注: S是鋼管公稱壁厚,D是(shì)鋼管(guǎn)公(gōng)稱外徑(jìng)。 | |||||||
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