Welded joints in pipes play a vital part in industry. They are used in oil refineries (see Fig. 1-6), chemical plants, power generating stations, and food processing plants. Welded joints in pipes also play a vital role in the transportation of liquids and gases, as exemplified Fig. 1-6. Typical plant requiring many pipe-weld joints. by […]

When the pipe is in the 5G position, with its axis horizontal as in Fig. 1-3, positions on the pipe can readily be identified by their likeness to the numbers on the face of a clock. Thus, the top of the pipe is in the 12 o’clock position and the bottom is the 6 o’clock […]

Industrial Press wishes to express its sincere appreciation to Robert O’Con for his invaluable assistance in the preparation of the second edition of this book. Only high quality pipe welds are acceptable in modern industry; for the failure of a pipe weld not only can disrupt the operation of a plant, it can be the […]

Industries, such as power plants, oil refineries, chemical plants, food processing plants, and those that operate cross-country pipe­lines, have created a great demand for welders who are capable of producing high-quality pipe welds consistently. This book is intended to help meet this need by assisting in the training of pipe welders in trade schools and […]

Today, most pipe is joined by welding, but this was not always true, for until about 35 years ago pipe was joined by screw threads or by bolted flanged joints. Welding, now considered the best method for connecting pipe, is used even in the most demanding high-pressure and high-temperature service. Much of the credit for […]