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Biology derv equipment also is equipment of a kind of chemical industry, that produces equipment as essential industry, what is the respect chosen to have to pay attention to in material? If can consult the following if these principles undertake, at least the quality of the chemical device such as biology derv equipment had basic safeguard.

Above all, chosen material should satisfy the requirement of the craft that make and equipment, include ambient conditions, technical properties to wait a moment, choose intensity, plasticity, tenacity, corrosion resistance to compare good stuff as far as possible. Chemical equipment has certain dangerous sex normally, so material should accord with safe requirement, the service life that also is it wants to assure somewhat. Be machined by material and chemical fixture is become, but if choose material treatment rises if having difficulty, a lot of difficulty also can be encountered in the process of the equipment that make. A bit is material economy of the consideration wants after, point to the charge of material itself not only, combine its to machine cost even, safeguard cost to wait a moment, choose sexual price to compare tall data as far as possible, the system with the value better ability of equipment of derv of so whole live thing comes out now.