Rust is not thick, can use steelwire brush, steelwirecloth to wipe the surface, until the instinctive quality with stainless steel pipe, reoccupy cotton rub-up.
锈蚀不厚，可用钢丝刷、钢丝布擦拭表面，直至露出不锈钢管本色，再用棉纱擦净。
3
Use sand cloth or steelwire brush to clean both tube and cup to a bright metal. Steel wool is not recommended.