According to the report, the federal procurement records show that the contractor officials believe that the purchase of the above products in the United States cannot meet the quantity and quality requirements, and the above decision was made after “a comprehensive market survey and a thorough understanding of the US domestic manufacturersâ€. The report also stated that statistical data showed that during the fiscal year of 2009, the U.S. federal government purchased 44,000 orders for unsuccessful domestic purchases, involving purchases of nearly US$14 billion.
There is ample evidence that many agencies, including the US Department of Defense, have not conducted extensive and in-depth procurement research. The intensity of procurement by different agencies is also very different. However, Jennifer Baker-Reid of the Society of Industrial Fasteners of the Nut and Nut Manufacturers Association of the United States stated that the lack of domestic screws in the AFB project construction is credible and should be concluded through market research. And most of the screws are currently imported from China.
Mandell claimed to have stumbled upon this when he was researching a textbook. He said that the U.S. Air Force’s construction of a base in Alaska did not implement the provisions of the 2009 U.S. Economic Recovery and Reinvestment Act concerning procurement of domestic goods. The construction project was originally supported by the U.S. government to restore economic stimulus measures. According to the regulations, U.S. products should be purchased and used, but the base believes that such devices as ceiling fans, shower curtain rods, towel racks, roll holders, and various screw fixing devices are simple. Products simply can't find American manufacturers.
Mandell stated in his blog that the US Air Force’s abandonment of procurement of domestic goods in the above-mentioned construction projects "confirmed the demise of US domestic manufacturing." He also doubted whether the various small furniture products mentioned above could not be purchased from US domestic manufacturers. He claimed to “find the data that the amount of bolts and nuts produced in the United States has actually improved in recent yearsâ€. The U.S. manufacturing alliance also questioned the lack of an American screw manufacturer for the Air Force project. The union leader Scott - Paul said.
The signature blog of the US "Wall Street Journal" website also reproduced this news. The blogger Si Beigeer believes that the U.S. manufacturing alliance is somewhat fussy about the use of Chinese screws in the air force base construction project. This simply does not affect the combat effectiveness of the U.S. military. Speightler also stated that although in order to avoid letting the taxpayer's money run into the pockets of Chinese screw manufacturers, the U.S. manufacturing alliance called on US manufacturers to work hard to produce the products needed for the airbase construction project. However, Chinese manufacturers are busy upgrading their position in the value chain. I am afraid they will not be too concerned about losing their sales.
Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from which it exits.
Common uses include water, sewage, agriculture, petroleum, and petrochemical pumping. Centrifugal pumps are often chosen for their high flow rate capabilities, abrasive solution compatibility, mixing potential, as well as their relatively simple engineering.A centrifugal fan is commonly used to implement an air handling unit or vacuum cleaner. The reverse function of the Centrifugal Pump is a water turbine converting potential energy of water pressure into mechanical rotational energy.
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