Standard No.:	GB/T 20257.3-2006
English Name:	Cartographic symbols for national fundamental scale maps -- Part 3: Specifications for cartographic symbols 1:25000 1:50000 & 1:100000 topographic maps
Chinese Name:	国家基本比例尺地图图式 第3部分：1:25000 1:50000 1:100000地形图图式
Chinese Classification:	A79    Map printing
Professional Classification:	GB    National Standard
Issued by:	the General Administration of Quality Supervision, Inspection and Quarantine and the Standardization Administration of China
Issued on:	2006-05-24
Implemented on:	2006-10-1
Status:	superseded
Superseded by:	GB/T 20257.3-2006/XG1-2010 Cartographic symbols for national fundamental scale maps -- Part 3: Specifications for cartographic symbols 1:25000 1:50000 & 1:100000 topographic maps, includes Amendment 1 GB/T 20257.3-2017 Cartographic symbols for national fundamental scale maps-Part 3: Specifications for cartographic symbols 1:25 000 1:50 000 & 1:100 000 topographic maps
Superseded on:	2009-12-12
Superseding:	GB 12342-1990 Specifications for cartographic symbols 1: 25000, 1: 50000, 1: 100000 topographic maps
Language:	English
File Format:	PDF
Word Count:	41000 words
Price(USD):	1230.0
Delivery:	via email in 1~10 business day

GB/T 20257-2006的本部分规定了1:25000、1:50000、1:100000 地形图上表示的各种地物、地貌要素的符号和注记的等级、规格和颜色标准、图幅整饰规格，以及使用这些符号的原则、要求和基本方法。