| 摘要 |
1374927 Sectional piles STABILATOR AB 8 Feb 1973 [22 Feb 1972] 6270/73 Heading F2G In order to lock pin and socket connectors 5, 9 joining two sections of a concrete pile, so that locking rods 8 cannot be shaken loose, split spring collars are held in grooves 15 and are a snap fit behind the enlarged heads 16 of rods 8, when these have been driven home. |
