mm公称通径DN101520253240506580100125150200250300350400公称通径DN2002503003504004505006007008009001000外径D141825323845577689108133159219273325377426外径D2192733253774264575296307208209201020PN2.5/0.25MPa33333.53.53.54444.54.5PN6/0.6MPa333.53.53.5444.55566PN10/1.0MPa2222.52.52.52.52.52.5333.53.53.5444.5PN16/1.6MPa22.52.52.52.52.5333333.53.544.555不锈钢无缝管PN25/2.5MPa22.52.52.52.52.53333.53.544.55667不锈钢焊管PN10/1.0MPa3.53.544.54.555.56778—PN16/1.6MPa44.5566778910——PN25/2.5MPa56789910121315——PN40/4.0MPa22.52.52.52.52.5333.544.55678910PN64/6.4MPa2.52.52.53333.544.5567810111314资料提供来源：浙江志达管业有限公司
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