约束接头管道通常由工厂准备的各种设计的约束接头组成。工厂制备的受约束接头的一个共同特点是，将一个环或珠焊接到管道的插口端，以提供正的整体推力约束。它们的制造符合铺设计划，管道的制造长度也不同，以适应配件。当现场出现问题，且长度必须与工厂装运的长度不同时，必须切断工厂焊接的插口端，并使用不同的接合系统。切割的原因通常是为了安装机械接头配件。 针对这类问题给出了几种解决方案。

Restrained joint pipelines frequently consist of factory-prepared restraining joints of various designs. A common feature of factory-prepared restrained joints is a ring or bead welded to the spigot end of the pipe for the purpose of providing a positive integral thrust restraint. They are made to suit a laying schedule and the pipe is fabricated to various lengths to accommodate the fittings. When problems arise in the field and the lengths must be changed from those shipped from the factory, the factory-welded spigot end must be cut off and a different jointing system must be used. Frequently, the reason for cutting is for the installation of a mechanical joint fitting. Several solutions are given for this type of problem.