1、中华人民共和国国家标准UDC621.643:669131.8可锻铸铁管路连接件型式尺寸GB3289.18-82Y型异径三通Malleable cast iron pipe fittings-Type size-Y Piece reducing(tees)本标准适用于公称通径Dg6150mm,公称压力Pg小于或等于16kgf/cm2,试验压力24kgf/cm2,介质最高工作温度不超过200的输送水、油、空气、煤气、蒸汽等一般管路上的管路连接件。1型式尺寸如图表。公称通径Dgb公称通径Dgamminmmmminmm1083/s1/a公251013%231g1581/2a25151/222品?151
2、01/23/g23252013/4322083/4/4193281/4/a1920103/43/823321011/a3/8232520153141/22732151/a/2272581/422193220143n32国家标准局1982-11-15发布1983-10-01实施GB3289.18-82续表公称通径Dgab公称通径Dgabmminmmmminmm10065421/26912510054489710080434278150206343210090432871502561381252053432150326144612525513815040611/2481253251144615050625712540511248150656226948125505257150806378125655212691509063128712580537815010064971259053287150125651132结构尺寸按GB3289.1-82。3技术条件按GB3287-82。4检验规则按GB3288-82。
