BRITISHSTANDARDBS1560-3.1:1989IncorporatingAmendmentNos.1and2Circularflangesforpipes,valvesandfittings(Classdesignated)—Part3:Steel,castironandcopperalloyflanges—Section
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/ 时间:2020-09-29 /
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BS,1560-3.1-1989,管道,阀门和管件用圆法兰特定类别.钢、铸铁和铜合金法兰,第1节,钢法兰规范,1560,3.1,1989,阀门,管件用圆,法兰,特定,类别,铸铁,铜合金,规范