Usually a pipe, known as a dip leg, is connected to this bottom outlet and, in catalytic cracking, serves to convey the solids back to the catalyst bed.
一般有一个通称为料腿的管子与此底部出口相连，在催化裂化中用此料腿将固体送回到催化剂床层。
2
Hot dip galvanizing is commonly used in plating cast iron pipe due to the particularity of material and shape, resulting in high zinc and energy consumption and high cost.
铸铁管件由于材质和形状的特殊性，一般采用热镀锌，但耗锌量大，能耗大，成本高。
3
The pipe is damaged more seriously when the dip angle of the reverse fault is large.