This pole suffered a failure in the welded seam at an overlapping slip splice. A tubular steel transmission pole generally consists of a series of welded assemblies. The pole shafts and arms are ...
SAN FRANCISCO — Acting Wednesday on the 95th anniversary of the San Francisco earthquake of 1906, experts from the Federal Emergency Management Agency called for new quake-resistant design and ...
Over 100 skilled welders started their work last Wednesday, using a total of 2 000kg of welding rod. They overcame two technical difficulties. One is the rigorous temperature requirement: it should be ...
Making vehicle structures out of a combination of metals and plastics could make them dramatically lighter, stronger, safer and more environmentally friendly than the all-steel or all-aluminum ...
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