管道外径与公称直径Excel对照表
表BJSJ-2;焊接钢管GB/T3091-2001(一般情况下,DN≥250mm,选用Q235焊接钢管,PN≤4.0Mpa)表BJSJ-3;不锈钢无缝钢管GB/T14976-2002(根据压力等级选择SS301/SS304/SS316/SS316L材质)管道选用参考表表BJSJ-1;无缝钢管GB/T8163-1999(一般情况下,DN≤200mm,选用20#无缝钢管,适用于DN≤350mm时,PN≤4.0Mpa或DN≥400mm时,PN≤2.5Mpa)公称直径101520253240506580100125150200250300350400450500600管道外径1418253238455...
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