JB/T 79.4-1994 环连接面整体铸钢管法兰

中华人民共和国机械行业标准JB:T79.4-94环连接面整体铸钢管法兰代替Ii9主题内容与适用范围本标准规定了公称压力PN为6,3,19.0,16,0,20.0MPa的环连接面整体铸钢管法兰的形式和八寸本标准适用于公称压力PN6.3~20.0MPa的环连接面整体铸钢管法2引用标准JB/T74管路法兰技术条件3法兰的型式和尺寸应符合图1及表1~表4的规定。RK图注:1)凸出部分高度与梯形槽深度E相等,但不受尺寸E公差的限制。允许采用如虚线所示轮廓的全平面形式4法兰的技术要求按JB/T74的规定。5法兰的公称压力和不同温度下的最大允许作压力按JB/T74附录B的规定。中华人民共和国机械工业部1994-12-09批准1995-1001实施49JB/T79.4-94表1PN6.3MPa环连接面整体铸钢管法兰尺寸TilL径法兰外径j螺替2广代连接密封面尺寸法公称双头螺柱中心圆螺栓孔直径厚度直径数量螺纹Thd!piF: r 7n|im…!!R系列1/系列2系列]/系列2,系列1系列2K上,75i44Mi?53135916.5).81845}1::130:125]8M1668496.51.8:20?4t):13510(18M16785:96.822·61|8:5213515023M206265916.5.0.83i618l170/16512523M2095759|6.0,8124l80/175133M2v10518st!8(t.8!26;g2(5/20016238M201301141?188281122l5!210l70M2014t;:115;1280.8:30:128126!(∷2:020[26;25M24AM22:6815121810.82|152!26:6122403SM2u2|1751280.8|36:81128313/3402808M3D2102051280.8382101x(175)375/37034M302723512.8422393212(1)115:40534536/3412}M3M830|302651218.84125813:;ta(225)40/43037036:34I2M3M30|32528128!0.846;31::147036:41]2M3/M3613521320}!28:0.18326}385336/4116!M33/M364121371289.81::8:!:12i()′5955216M3614742012|80.8:6041246124020(742/1816M39/M42{525480;1281.866:(51218/54M45/M4816159011|10.0.870:6105518JB/T79.4-94表2PN10.0MPa环连接面整体铸钢管法兰尺寸M连接密封面尺寸法通径!法兰外径螺栓孔公称双头螺柱中心圆氵螺栓孔直径厚度真径数量螺纹ThPFE!…cN….sm,R系列1/条列2K到1/系列21n系列1系列210514M1255|3596.5G.8:20451520130/12511668459|6.50.8221140/135M1678509|6.50.8216184i55:/5023M2082165!96.5(.821i818M2017596.50.8268020419514526/254M24/M2212851280.828942:4220]7026/258|M24/M2213811012|8Q.832;11523018426/258M21M221481151280.83413226H0)02652108M271721451280.88i160:0}512553153102508M3021017512!80.84218932|6130335350290M302502051280.8:462:66(175380320M30280235128(.848:5138820043Q36036/4112M33/M363122651280.8;4:2844225)47010012M363522801280.856313|44825()5υ43012M36382301280.8|60346;83058550042/4816!M39M424423?5128.870408:54;1035056048/5416M45M484984201711,87646651240062048/546M45/M48|558|480171110.8}805200:235lJB/T79.4…94表3PNI6.0MPa环连接面整体铸钢管法兰尺寸hr连接密封闻尺寸法公称通径|法兰外径螺栓孔双头螺杜心圆!螺栓孔直径数量螺纹Thd i P FE系列2直径系列2K系列21511M!62:3596.5(.8;21:19!172133M2021596.50.826140]0}234M20725096.5a.8;28}6:115M228|65|?6.50,8!307M219275916.50.§!;2:822156525132951280.836102265245191M2713211012|8(.8!41313382602)58:130128.::6113!8193024034M30200160128!0.84817238!8125M362381901280.86021,44:112866「246810(175)46038048M423252517110.87428756102001048M42352751710.87831615810("2)545405412390305!i7110.882345:6(:10251852M4842533017110.8188786113006657")M485]038023:140.810:45276110JB/T79.4-94表4PN20.0MPa环连接面整体铸钢管法兰尺寸nIrt连接尺寸密封面尺寸法兰颈公称螺栓孔双头螺柱法通径法兰外径中心圆螺栓孔直径厚度数量螺纹Thd PIeDrasN直径系列2系列2K系列2120554096.50.8265182013023M2062145:96.50.8286020}525M2272:50}96.50.8|30|6721|56011525M228565!96.50.83278235124M249975916.50.83492101698M2228951280.8401829520330M27165110128!0.8481371361829030348M30190160128i0.8541604082928M362451901280.86620452838531812M362702014100.8762375610L5044036012M423052401711108822706010(175)4753944812M42340275171110.88430163102005354405412M48380|3051711|0.8923407010(2255801835812M52418317110.81003777610250670572M52508380231140.810489410注:表1~表4中系列1法兰连接尺寸与国标及德国法兰标准尺寸互换;系列2尺寸与原机标法兰尺寸互换新产品设计应优先采用系列1尺寸。附加说明:本标准由机械工业部机械标准化研究所提出并归口。本标准由机楲工业部机械标准化研究所、哈尔滨锅炉厂起草。本标准主要起草人李俊英、吴桢家。353