法蘭及其接頭 螺栓連接 第1部分：螺栓連接的選擇 EN 1515 (-1) - 1999
适用範圍
本标準适用于根據EN 1092系列為PN指定法蘭和根據EN 1759系列為等級指定法蘭選擇螺栓。規定了螺栓、雙頭螺栓和螺母的尺寸、材料和交貨技術條件的标準。
标準内的螺栓選擇與EN 1092系列和EN 1759系列的法蘭聯合使用，但不适用于一般用途。
材料的選擇基于常用材料，涵蓋了标準法蘭的一般服務所需的所有壓力和溫度範圍。對于特殊應用，用戶可以選擇其他材料。在某些情況下，也包括相似的合金，這些合金之間僅在碳含量上有所不同（例如0.25%或0.42%），這是由于各國标準的要求不同。
螺栓類型選擇
尺寸标準 | 材料及等級 | 說明 | |
螺栓 | 螺母 | ||
4.6/5 | 六角頭螺栓 | ||
all | 六角頭螺栓 | ||
① | EN 24032 | all | 雙頭螺栓 |
① Stud bolts threaded full length：The points shall be chamferred or rounded at the manufacture′s option The heigh of point shall be a maximum one times the pitch of thread.The length of stud bolts has to be measured including points. The lengths are stepped by increments of 5 mm for lengths up to 80 mm, by increments of 10 mm for lengths above 80 mm and up 10 200 mm, and by increments of 20 mm for lengths above 200 mm. Thread in accordance with ISO 261, ISO 965-2 tolerance class 6g. Type of thread is either coarse thread or above M39 fine thread wilh 4 mm pitch.The type of thread shall be selected by the user. Fine thread above M39 is nonnally used for industrial plants. coarse thread up to and including M64 is nonnally used for water service. | |||