2009/09/30
"Portable pipe fitting angle detection device and its accessories" patented
In the field of science and technology, the "portable pipe fitting angle detection device and its accessories" invented by Jianzhi Company in accordance with the needs of pipe thread detection work was patented on January 28, 2009.
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2009/09/28
Another patent: portable pipe fitting angle detection device and its accessories
In the field of science and technology, the "portable pipe fitting angle detection device and its accessories" invented by Jianzhi Company in accordance with the needs of pipe thread detection work was patented on January 28, 2009.
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2009/09/28
Jianzhi Group participated in the drafting and revision of GB/T3287
In July 2009, as the main drafting unit of the national standard GB/T3287 "malleable cast iron pipe connector", participated in the drafting and revision of the standard.
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