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1、表一 常用法兰规格尺寸表(国标）GB9119，288GB9119，288in公称通径10kg=1.0MPa公称通径16kg=1.6MPa法兰外径螺栓孔距螺栓直径螺栓孔数法兰厚度法兰外径螺栓孔距螺栓直径螺栓孔数法兰厚度3/8DN10506014414DN109060144141/2DN15596514414DN159565144143/4DN201057514416DN2010575144161DN251158514416DN25115851441611/4DN3214010018418DN321401001841811/2DN4015011018418DN40150110184182DN501
2、6512518420DN501651251842021/2DN6518514518420DN65185145184203DN8020016018820DN802001601882031/2DN10022018018822DN100220180188224DN12525021018822DN125250210188225DN15028524022824DN150285240228246DN20034029522824DN200340295228268DN250395350221226DN25040535526122910DN300445400221228DN30046041026123212DN
3、350505460221630DN35052047026163514DN400565515261632DN40058052530163816DN450615565262035DN45064058530204218DN500670620262038DN50071565033204620DN600780725262042DN600840770362052表二 不锈钢法兰规格尺寸表（日标）尺寸规格外径內径厚中心孔大孔数尺寸规格外径內径厚中心孔大孔数1/25K8022.596012435K180901414519410K9522.5127015410K185901815019820K9522.5147
4、015420K2009022160238150P8922.311.260.3154150P19090.723.9152.4194300P9522.314.366.7194300P21090.728.6168.3228DIN169522.51465154DIN162009020160198水道21190181681843/45K8528106512445K2001161616519810K10028147515410K2101161817519820K10028167515420K22511624185238150P9827.712.769.8154150P229116.123.9190.519
5、8300P11727.715.182.5194300P254116.131.8200228DIN16105281675154DIN1622011620180198水道238115.41819518415K9534.5107512455K2351421620019810K12534.5149019410K2501422021023820K12534.5169019420K27014226225258150P10834.514.379.4154150P254143.823.9215.9228300P12434.517.590194300P279143.835234.9228DIN1611534.5
6、1685154DIN1625014222210198水道263141.2192201861 1/45K11543.5129015465K2651671823019810K13543.51610019410K2801672224023820K13543.51810019420K305167282602512150P11743.215.988.9154150P279170.725.4241.3228300P13343.219.198.4194300P318170.736.6269.92212DIN1614043.516100194DIN1628516722240238水道290166.620247
7、1861 1/25K12050129515485K3202182028023810K140501610519410K33021822290231220K140501810519420K350218303052512150P12749.517.598.4154150P343221.528.6298.4228300P15649.520.7114.3194300P381221.541.3330.22512DIN161505016110194DIN16340218242952312水道3422182129918825K13061.514105154105K38527022345231210K15561
8、.51612019410K40027024355251220K15561.51812019820K430270343802712150P1526219.1120.6194150P276.340630.2361.92512300P1656222.3127228300P444276.347.7387.32916DIN1616561.518125194DIN16405270263552712水道18461.118140184水道410269.5223602182 1/25K15577.514130154155K43032022390231210K17577.51814019410K445320244
9、00251620K17577.52014019820K480320364302716150P17874.722.3139.7194150P483327.131.8431.82512300P19074.725.4149.2228300P521327.150.8450.83216DIN1618577.518145194DIN16460320284122712水道19377.118155184水道4643212341421法兰类型及密封面类型法兰类型代号法兰类型PL板式平焊法兰SO带颈平焊法兰WN带颈对焊法兰IF整体法兰SW承插焊法兰TH螺纹法兰PJ/SE对焊环松套法兰PJ/RJ平焊环松套法兰BL法兰盖BL(S)衬里法兰盖氨氧化催化剂往往亦可用作醛类氧化催化剂,其原因是由于这两类反应通过类似的历程,形成相同的氧化中间物之故。上列反应中以丙烯氨氧化合成丙烯腈最为重要,下面即以此反应为例进行讨
