The surface finish for the castings we can provide with are as the following : blacking , zine plating , chrome plating and nichel plating for the carbon steel and the low alloy steel castings ; tumbling , hand dull polishing , mirror polishing , electrolytic polishing and passivation treatment for the stainless steel castings and sandblasting , including glass bead blasting , corundum - sand blasting and quartz - sand blasting form all the steel castings 我公司有能力对铸件表面作以下精整处理，对于碳钢和低合金钢，可以作发黑、镀锌、镀铬、镀镍处理；对于不锈钢，可作研磨、手工拉丝抛光及镜面抛光、电抛光、钝化处理；所有钢种可作喷砂（玻璃砂、钢玉砂、石英砂）处理。
