Also known as screw fasteners, not the same name and has Qingzhou stainless steel screws hose clamps, but the inner meaning is the same. When each of the fasteners to the two or more parts (or components) fastening become a whole adopted a kind of mechanical parts in general. Fastener product standards should involve some aspects of content. 1, fastener product dimensions Standards: specify the content of the basic dimensions of the product; product Qingzhou threaded stainless steel screws 304, also includes basic thread size, thread ending, shoulder distance, undercuts and chamfers, outer The end of the size threaded parts and other aspects. 2, the fastener product technology standard conditions. Including content production tolerances, mechanical properties, surface defects, surface treatment, product testing standard terms and the corresponding specified areas. Qingzhou 321 stainless steel bolts stainless steel screws, 316 stainless steel flat pad, 316 stainless steel expansion bolts heat resistance of 304 stainless steel locking screw fold heat resistance: 1600 ℃ or less in intermittent use and continuous use of the following 1700 ℃, 316L stainless steel with good The resistance to oxidation. In the range of 800-1575 ℃, it is best not to continuous use 316L stainless steel bolts, but the temperature range that the continuous use of 316L stainless steel bolts having good heat resistance. Resistant 316L stainless steel bolts carbide precipitation performance to be better than the 304 stainless steel bolts stainless steel screws bolts Qingzhou, Qingzhou stainless steel screws, Jinan Road ground is provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) strong, credible, in Jinan, Shandong hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Road ground into the brilliant and you work for a better future!