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Jan 01, 2017 · Boiler headers (as depicted in Fig. 9.1) are manufactured by heavy-walled seamless pipes.Welding is extensively used for joining the tubes stubs (using a combination of GTA + manual metal arc (MMA) methods on T-butt joints) and the headers subsections (by SA or NG-GTA girth butt welding).In-shop manufacturing is done whenever possible with the ability of rotating the pipe, thus …Some results are removed in response to a notice of local law requirement. For more information, please see here.
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