Therefore transportation of sulphuric acid valve is usually a high silicon iron pump (casting and machining difficult), high-alloy stainless steel pumps (on the 20th alloy) manufacturing.
因此输送硫酸的泵阀通常采用高硅铸铁泵(铸造及加工难度大)、高合金不锈钢泵(20号合金)制造。
Thus transport of sulfuric acid pump usually high silicon cast iron (casting and processing is very difficult), high-alloy stainless steel (alloy No. 20) to create.
因此输送硫酸的泵阀通常采用高硅铸铁（铸造及加工难度大）、高合金不锈钢（20号合金）制造。
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