Concrete pumps have a history of nearly one hundred years. In 1907, France began to study concrete pumps, and some people obtained patents. Since then, some people have obtained patent rights in the United States in 1913 and manufactured the first concrete pump, but it was put on hold after trial operation and has not been applied. In 1927, Feliz Heier of France designed and manufactured a concrete pump, which was successfully used for the first time. By 1930, Germany had manufactured vertical single-cylinder ball valve pistons ...
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