1、DL/T680一2015ForewordThe major changes and supplements have been made to the technical contents in this revised version over DL/T680-1999 Specification for Wear-resistant Pipes in the following aspects:-The title of the standard has been changed from Specification for Wear-resistant Pipes intoSpecifi
2、cation for Electric Power Industry Wear-resistant Pipes.The chemical compositions of some grades have been modified.The designation of abrasion-resistant white cast iron has been modified.The property parameters of some grades have been modified and adjusted.The nominal diameter ranges of some circu
3、lar wear-resistant pipes have been adjusted.The designation of some wear-resistant pipes has been adjusted.The abrasion-resistant white cast iron mono-metal pipe(KmTBCr2G)and abrasion-resistant whitecast iron bimetal composite wear-resistant pipe(KmTBCr2-G)in the former standard have beenremoved.-So
4、me terms related to the wear-resistant pipes have beer:ded.The abrasion-resistant white cast iron wear-resistani pipes(BTMCr8G,BTMCr12G,BTMCr30G)and abrasion-resistant white cast iron bimet:i composite wear-resistant pipes(BTMCr8-G,BTMCr12-G,BTMCr30-G)have been added.The alloy steel composite wear-r
5、esistant aees with hardened inner walls pipes(NY45CrMnSi-G.NY55CrMnSi-G,NY65CrMnSi-G)haybeen added.The surfacing composite wear-resistnt pipes(DNM-IV-G,DNM-V-G)have been added.The ceramic composite wear-resistant pipes prepared by sleeving and casting methods(TCT-G.TCZ-G)have been added.The silicon
6、carbide composite wear-resistant pipe combined with oxides(YSiC-G)and recrystallizedsilicon carbide composite wear-resistant pipe(RSiC-G)have been added.This standard was proposed by China Electricity Council.This standard is under jurisdiction of Standardization Technology Committee of Power Plant
7、MetallicMaterials in Electric Power Industry.The chief drafting organizations of this standard include North China Electric Power University,HuadianElectric Power Research Institute,and Huludao Huaneng Industrial Ceramic Co.,Ltd.The organizations participating in the drafting of this standard includ
8、e Nantong Gaoxin AntiwearTechnology Co.,Ltd.,Jiangsu Huanai Lining Material Co.,Ltd.,Penglai Shuicheng Cast Basalt PipesValves Co.,Ltd.,Chongqing Yuji Machinery Manufacturing Co.,Ltd.,Hebei Jiutong Wear and CorrosionResistant Pipeline Co.,Ltd.,Anshan Taiyuan Industrial Co.,Ltd.,Chongqing Luoman Wear
9、 Resistant NewMaterials Co.,Ltd.,Zhengzhou Huatai Energy Saving Ceramic Co.,Ltd.,Xuzhou Zhongcai Tianyuan HeavyMachinery Co.,Ltd.,Tianjin Fuyide Electromechanical Equipment Co.,Ltd.,Inner Mongolia KeyunEnvironmental Protection Material Co.,Ltd.,Tianjin Tedian Metal Products Co.,Ltd.,Hebei Jingliang
10、PowerEquipment Co.,Ltd.,Beijing Jiake Xinxing Technology Co.,Ltd.,Cangzhou Boyang Pipeline Group Co.,Ltd.,Shangan Power Plant of Huaneng Power International,Inc.,Xian Thermal Power Research Institute Co.,Ltd.,National Experiment and Research Center for Wear Resistant Material of Power Industry,Hangzhou Huadian
