When two square pipes, having their ends cut level, need connecting, this may be accomplished by joining them with an oblique square pipe, as shown in Fig. 316.

The setting out of the pattern is obviously so simple that there is no need for further description.

In bending up it should be remembered that the ends of the connecting pipe will be square, its cross section, of course, being rectangular.

Oblique Square Connecting Pipe 353

Fig. 316.