... surface: anodizing, clear 4.qty: 1000pcs steel machined part1.material: Q235,20#steel,S/S 304, 4102.size: as ... clear4.qty: 1000pcs Key Specifications/Special Features:Materials: carbon steel, stainless steel, alloy steel and aluminum Standard: ASTM, JIS, BS, DIN, ... , drilling, planning, grinding machines and test facility Chemical composition controlled by spectrometer OEM orders are welcome, will make ...