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1、钢管壁厚等级对照表公外径(D)公称壁厚称 直 径 DNA系 列B系 列SchSchSchLGSchSchSTDSchSchXSSchSchSchSchSch 5s10s20s2030406080100120140180 1521.3181.62.12.6-2.772.9-3.6-4.5 2026.9251.62.12.6-2.872.9-4-5.6 2533.7321.62.83.2-3.383.2-4.5-6.3 3242.4381.62.83.2-3.563.6-5-6.3 4048.3451.62.83.2-3.683.6-5-7.1 5060.3571.62.83.6-3.2-3.91
2、4-5.6-8.8 6576.176233.6-4.5-5.165-7.1-10 8088.989234-4.5-5.495.6-8-11 90101.6-234-4.5-5.745.6-8-12.5 100114.3108234-5-6.025.9-8.8-11-14.2125139.71332.93.45-5-6.556.3-10-12. 5-16150168.31592.93.45-5.6-7.117.1-11-14. 2-17.5200219.12192.946.3-6.37.18.18810-12. 51617. 52022.22502732733.646.3-6.389.278.8
3、12. 5-1617. 522. 22528300323.932544.56.3-6.38.89.531014. 2-17. 522. 2252832350355.637745-88109.531116132025. 8283236400406.442645-88109.5312. 517. 51322. 228. 530364045045747845-88119.5314. 22013253036404550050852955.681012.59.531620132832404550 550559-55.68-9.53-1330-6006106305.66.38-9.5317. 5-1332-650660-8-9.53-13- 700711720-8-9.53-13- 750762-8-9.53-13- 800813820-8-9.53-13- 850864-8-9.53-13- 900914920-8-9.53-13- 950965-8-9.53-13- 100010161020-8-9.53-13- 10501067-8-9.53-13- 110011181120-8-9.53-13- 11501168-8-9.53-13- 120012191220-8-9.53-13-
