There are many ways to design stone carvings. Relief: carving a three-dimensional image on the stone surface, which is a semi vertical sculpture. Because the image is embossed on the stone surface, it is called relief. According to the depth of the stone surface, it can be divided into shallow relief and high relief. Shallow relief is a single level statue, which has a single content and is not hollowed out. High relief is a multi-level sculpture with complicated contents. It is more attractive to use openwork techniques to hollow out. The reliefs are mostly used for the wall decoration of buildings, as well as the dragon columns and holding drums of temples. Marble Sculpting,Marble Sculpting Process,Modern Marble Sculpting,Marble Sculpture Art The universe in the stone is great , https://www.zdartwork.com
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Seamless steel tube(s) for bearings /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Pinyin: zhouchenggangguan
Description: Refers to hot-rolled or cold-rolled (cold-drawn) seamless steel tubes; used for the production of general rolling bearing rings. The outer diameter of steel pipes is 25-180 mm; the wall thickness is 3. 5-20 mm; High precision two.
There are the following types of bearing steels for producing bearing steel pipes (G) marked with "rolling": chromium bearing steel such as GCr6; GCr9 (SiMn), GCrl5 (SiMn), chromium-free bearing steel such as GSiMnV (Re); GSiMnMoV (Re); GMnMoV (Re), carburized bearing steel such as G20CrMo, G20Cr2Mn2Mo, high carbon chromium stainless bearing steel such as 9Cr18 (Mo).
The technical conditions for producing bearing steel pipes are more stringent; the chemical composition, mechanical properties, process properties, grain size, carbide shape, decarburization depth, etc. of the product requirements are in line with the rules of the relevant specifications.
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Source: Bearing network time: 2018-06-27