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管線管尺寸公差,力學(xué)性能 |
我公司長(zhǎng)期供應(yīng)鋼管、無(wú)縫鋼管、厚壁鋼管 |
管線管尺寸公差 鋼管種類 鋼管外徑(D) 鋼管壁厚(S) 管體 鋼管外徑 (mm) 允許偏差(mm) 鋼管外徑(mm) 允許偏差(mm) ≥60.3且S<20 ±0.75% ≤73.0 +15%,-12.5% ≥60.3且S≥20 ±1.00% >73.0且S<20 +15%,-12.5%
>73.0且S≥20 +17.5%,-10 管線管力學(xué)性能: 標(biāo)準(zhǔn) 牌號(hào) 抗拉強(qiáng)度(MPa) 屈服強(qiáng)度(MPa) 屈強(qiáng)比 伸長(zhǎng)率(%) 0℃沖擊功 Akv(J) 熱處理狀態(tài) API SPEC 5L GB/T9711.2 B ≥415 245~440 ≤0.80 22 ≥40 正火 X42 ≥415 290~440 ≤0.80 21 ≥40 正火 X52 ≥460 360~510 ≤0.85 20 ≥40 正火 X60 ≥520 415~565 ≤0.85 18 ≥40 正火 X65 ≥535 450~570 ≤0.90 18 ≥40 淬火+回火 X70 ≥570 485~605 ≤0.90 18 ≥40 淬火+回火 化學(xué)成分: 標(biāo)準(zhǔn) 牌號(hào) 化學(xué)成分(%) CEV(%) C Si Mn P S V Nb Ti API SPEC 5L GB/T9711.2 B ≤0.16 ≤0.40 ≤1.10 ≤0.020 ≤0.010 - - - ≤0.42 X42 ≤0.17 ≤0.40 ≤1.20 ≤0.020 ≤0.010 ≤0.05 ≤0.05 ≤0.04 ≤0.42 X52 ≤0.20 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.10 ≤0.05 ≤0.04 ≤0.45 X60 ≤0.21 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.15 ≤0.05 ≤0.04 協(xié)議 X65 ≤0.16 ≤0.45 ≤1.60 ≤0.020 ≤0.010 ≤0.06 ≤0.05 ≤0.06 ≤0.45 X70 ≤0.16 ≤0.45 ≤1.70 ≤0.020 ≤0.010 ≤0.06 ≤0.05 ≤0.06 ≤0.45 注: 1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10% 2.V+Nb+Ti≤0.15 3.X60、X65、X70經(jīng)協(xié)商Mo≤0.35% |
來(lái)自:鋼管,無(wú)縫鋼管專營(yíng)公司 http://www.hibango.com |
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