In the processing of a pair of molds, there are three internal threaded holes without backing groove (as shown in the figure). The last thread is required to be a spiral, so it cannot be turned by the knife and the knife is turned off. It is very difficult to operate, and it is very easy to damage the tool, which causes the workpiece to be scrapped. Therefore, I designed and manufactured a simple automatic retracting device, which is easy to operate and smoothly completes the machining task.
Floor drain
Floor drain is a plumbing fixture that is installed in the floor of a structure, mainly designed to remove any standing water near it. They are usually round, but can be also square or rectangular. Our floor drain`s size has 4", 6", in diameter. They are made of metal, like brass, stainless steel. Floor drains can also be found in commercial basements, restrooms, kitchens, refrigerator areas, shower room, laundry facilities and near swimming pool etc.
Brass Floor Drain,Stainless Steel Floor Drain,Floor Drain Strainer,Square Floor Drain
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