产品介绍《k9球墨铸铁管及管件技术手册》介绍了k9球墨铸铁管的制造技术、接口形式、质量标准、安装技术以及特殊用途球墨铸铁管等内容,列举了各种接口球墨铸铁直管、管件、附件的技术参数以便于读者选用,精选了附录以便于读者了解球墨铸铁管的设计、施工等内容。《球墨铸铁管及管件技术手册》可供制造和应用的球墨铸铁管领域内的科研人员、设计人员、生产人员、施工人员、管理人员阅读产品属性"K9 ductile iron pipe and pipe fittings technical manual" introduces the technical, manufacturing K9 nodular cast iron pipe interface form, quality standards, installation technology and special use of ductile cast iron pipe and other content, technical parameters of various interfaces of nodular cast iron pipe, pipe fittings, accessories list for readers to use, design, construction choosing the content of appendix for readers to understand the nodular cast iron pipe. "Ductile cast iron pipe and pipe fittings technical manual" nodular cast iron can be used for manufacturing and application of the tube within the field of scientific research personnel, designers, production personnel, construction personnel, management personnel to read其他说明k9球墨铸铁管技术要求3.1力学性能(1)抗拉强度表3.1-1铸件类型 最小抗拉强度 σb,MPa 最小伸长率 δ5,% DN40~2600 DN40~1000 DN1100~2600 k9球墨铸铁管 420 10 7 管件、非k9球墨铸铁管 420 5 5 注1:根据供需双方的协议,可检验屈服强度(σp0.2)的值。其中当DN40~1000,δ5≥12%时,允许σp0.2≥270MPa;或当DN>DN1000,δ5≥10%时,允许σp0.2≥270MPa,其他情况下σp0.2≥300MPa。注2:DN40~1000的离心球墨铸铁管壁厚等级超过K12时,最小伸长率为7%。
(2)布氏硬度直管、管件和附件的硬度是指用标准的工具可以对其进行切割、钻孔、打眼/或机械加工的硬度。如有争议,可进行硬度试验。k9球墨铸铁管的布氏硬度值不得超过230HB,非离心球墨铸铁管、管件和附件的布氏硬度值不得超过250HB。焊接部件的焊接受热区的布氏硬度值可高些。交易说明电议 13361471188