inside to kolker the stages are subjected to high pressure and five hundred plus degree celsius heat which not only for just iron copper alloys together compress and spend strengthens the whole stage. metallurgy did under the production is hardly knew it was developed by the russian scientists. in the twenty's to make clones out of his methods already included most of the basics used in the modern era as machine building exploded in the twentieth century so too did the waste from the forging of even the smallest metal detail particularly in the postwar context. of my eyes on this valuable waste brought back more precise on matters after the manufacturing of the stages there passed on for chemical treatment that's vital to making them ready for action deep under the earth the conditions for oil and gas drilling and pumping are increasingly inverse as the older and more easily accessible wells. has already pioneered only centrifugal designed to better withstand the long months of sand blasting they're sure to receive underground and well known homes are now proven to work for a competi