B is suitable not only for turning, milling and grinding of ferrous but also for cuprous, aluminum and its alloys, it has better lubricity than PS4030A.

• 通用切削液既适合黑色金属又适合铜、铝及其合金等有色金属的车削、铣削、磨削等加工，具有比PS4030A更好的润滑性。