產品介紹《k9球墨鑄鐵管及管件技術手冊》介紹了k9球墨鑄鐵管的制造技術、接口形式、質量標準、安裝技術以及特殊用途球墨鑄鐵管等內容,列舉了各種接口球墨鑄鐵直管、管件、附件的技術參數以便于讀者選用,精選了附錄以便于讀者了解球墨鑄鐵管的設計、施工等內容。《球墨鑄鐵管及管件技術手冊》可供制造和應用的球墨鑄鐵管領域內的科研人員、設計人員、生產人員、施工人員、管理人員閱讀產品屬性"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其他說明k9球墨鑄鐵管技術要求3.1力學性能(1)抗拉強度表3.1-1鑄件類型 最小抗拉強度 σb,MPa 最小伸長率 δ5,% DN40~2600 DN40~1000 DN1100~2600 k9球墨鑄鐵管 420 10 7 管件、非k9球墨鑄鐵管 420 5 5 注1:根據供需雙方的協議,可檢驗屈服強度(σp0.2)的值。其中當DN40~1000,δ5≥12%時,允許σp0.2≥270MPa;或當DN>DN1000,δ5≥10%時,允許σp0.2≥270MPa,其他情況下σp0.2≥300MPa。注2:DN40~1000的離心球墨鑄鐵管壁厚等級超過K12時,最小伸長率為7%。
(2)布氏硬度直管、管件和附件的硬度是指用標準的工具可以對其進行切割、鉆孔、打眼/或機械加工的硬度。如有爭議,可進行硬度試驗。k9球墨鑄鐵管的布氏硬度值不得超過230HB,非離心球墨鑄鐵管、管件和附件的布氏硬度值不得超過250HB。焊接部件的焊接受熱區的布氏硬度值可高些。交易說明電議 13361471188