Hydraulic Expander

Hydraulic Expander Abstract— Expander machine is used to expand L-SAW and spiral welded pipes. Mechanical expander is used to expand pipes mechanically while hydro tester unit after that is used to hydro test pipes. Now a days technology is changing and people are always wish to save their cost of production, time, space and human power involvement. By combining mechanical expander and hydro tester unit […]

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Ovality in Pipes

Ovality in Pipes. Abstract— Ovality in Pipes. Ovality generally known as ‘Out of Roundness’ is one of the most common defects in pipe manufacturing. Ovality in early stages makes manufacturing process time consuming and less efficient. After dispatching, because of improper handling, ovality turns into barrier of proper welding of two pipes on site. In this paper, there is inclusion of causes of ovality, stages of […]

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