| 国际代码UDC666.73:666.77标准号GB4671-84标准发布单位国家标准局标准发布日期1984-09-03发布标准实施日期1985-07-01实施本标准适用于化工等部门排输酸性废水及其他腐蚀性介质用的承插式陶管及配件(以下简称陶管及配件)。1规格形状1.1直管的规格和形状如图1和表1。1.2配件的规格和形状如图2～6及表2～6。配件的壁厚和承插口尺寸与相应公称直径的管子相同。1.3其他规格形状的直管及配件可由供需双方商定。表1直管规格mm________________________________________________________________________________承插口间隙公称直径内径有效长度管身壁厚承口壁厚承口深度承口倾斜ds-d1DgdLδtLs________H250507575300,50014≥10≥40≈4≥1010010017≥50≥1315015018≥55≥12≈520020020≥16≥60500，600，700，250250800，100022≥15 ≈630030024≥20≥7040040030≥24≥75≥2050050035≥28≈7≥80≥2560060040≥32________________________________________________________________________________标志示例：直管Dg100×1000表示公称直径为100mm，长为1000mm的直管。表2弯管规格mm________________________________________________________________________________a=30°a45°a=60°a=90°公称直径内径DgdL1L2L1L2L1L2L1L250501201401501501501501507575130150150200200100100220220220150150140160220220200200150180200260300300330330250250160200220280350350330330300300180220240300380380400400200250300400350350400400________________________________________________________________________________表390°三通及四通管规格mm________________________________________________________________________________公称直径主管内径支管内径主管有效长度Dgdd[1]LL1L2 50×5050755075×50500852507575×757590100×5050100100×7510075105100×100100110150×5050120150×7575150150×100100130150×150150200×5050170200×7575600200×100200100200×150150180200×200200250×7575170250×100100300250×150250150250×200200180250×250250300×7575220300×100100300×150300150300×200200230300×300300800240400×7575250400×100100260400×200400200400×300300270400×400400290________________________________________________________________________________表445°三通管及四通管规格mm________________________________________________________________________________公称直径主管内径支管内径主管有效长度Dgdd[1]LL1L2 50×50501501805075×501651907575×7575180210100×5050220100×7510075220500230100×100100150×5050220250150×7575235270150150×100100250290150×150150280320200×5050280290200×7575300310200×100200100320340200×150150340375200×200200410440250×7575280290250×100100300310250×150250150320340250×200200340375250×250250410440800300×7575360370300×100100390410300×150300150410430300×200200480500300×300300520570400×7575420420400×100100450450400×200400200480480400×300300530550400×400400580520________________________________________________________________________________表5Y型三通管规格mm________________________________________________________________________________公称直径主管内径主管有效长度支管有效长度DgdLL150501107575140300100100160150150230200200400380________________________________________________________________________________表6异径管规格________________________________________________________________________________公称直径内径内径有效长度Dgdd[1]L100×5050100100×7575150×7575150150×100100200×100100200300200×150150250×150150250250×200200300×200200300300×250250________________________________________________________________________________标志示例：异径管Dg100×50表示公称直径从100～50mm的异径管。注：异径管应生产正向、反向两种。1.4在承插口连接部位以适当间隔刻划深约3毫米的环形沟漕。其数量如下：公称直径，mm沟漕的最少圈数50～1502〉15032技术要求2.1外观质量2.1.1陶管外观缺陷应不超过表7的规定。表7陶瓷允许外观缺陷mm________________________________________________________________________________允许范围缺陷名称一级品二级品内壁：不允许21内壁：不允许管身裂纹外壁：宽≤1，每处长≤20，累计工≤40外壁：宽≤1，每处长≤35，累计工≤80内壁：宽0.5，长≤25，允许3条，内壁：宽0.5，长≤25，允许3条，承口裂纹外壁：横纹宽≤1，累计长≤60；竖纹宽外壁：横纹宽≤1，累计长≤＋周长；竖≤1，长≤25不连及管身，允许1条纹宽≤1，长≤30不连及管身，允许1条11承口底部横纹宽≤1，长≤____周长；横纹宽≤1，长≤____周长； |
