Lap Joint Stub End Pipe

A pup joint is a commonly used accessory in industrial pipe connections. There are common threaded short sections, which are divided into double-ended outer wires, single-ended outer wires, and flat-ended outer wires, as well as short sections connected by flanges. The pup joints are divided into tubing pup joints and casing pup joints. In the connection of pipe fittings, the lap joint stub end is commonly used in conjunction with the flange.

Specifically, it is sleeved in the inner space of the flange and then the tail is welded with the steel pipe. At this time, the flange can be moved as long as it is a flange of a specification. It can be connected at any time. The purpose of the connection is that the flange can move the oil pipe. The short joint is a short oil pipe. Compared with the oil pipe, the length is different, and the others are the same. The lengths are: 0.25m, 0.5m, 1m, 1.5m, etc., used to assemble downhole pipe strings.