Abstract: A saddle joint assembly is disclosed which comprises a branch pipe and a main pipe disposed at right angles to one another, the main pipe having a hole through its wall facing one end of the branch pipe, the assembly including a saddle joint interconnecting the pipes. The latter joint has a branch pipe insertion part and a main pipe connecting part coaxial with the insertion part, the parts defining an inward shoulder therebetween and the connecting part being mounted in the wall hole of the main pipe while the branch pipe is mounted in the insertion part. The connecting part has bolt passages that extend between the shoulder and its outer end. An equal number of L-shaped anchor bolts, each having a stem portion threaded at one end and a bent portion at the other end are provided, the stem portions extending through the bolt passages while the threaded ends project above the inward shoulder, the bent ends facing the bore.