... tight tolerance. 3.Advanced equipment, excellent R&D teams. 4.Strict quality control. We are offering all kinds of ... with good condition for long term:1) Size: Different size, according to customer's drawings ,2) Material: carbon steel, alloy steel, stainless steel, aluminum, and ... inch)6 Weight: from 0.2 to 60kg7) Art of surface: zinc/nickel/chrome plating, hot galvanized, painting,coating, dichromate ...