1）本构件圆管各交线计算有两种方式，一种是以圆心到板材中心为半径计算斜口各素线的下料长度，即“板材中径”方式；一种是以内半径计算高端斜口各素线长度，外半径计算低端斜口各素线长度，即“修正半径”方式。如果板材较薄或者板材虽厚但以板材中线为基准打坡口，建议用板材中径方式下料；如果板材较厚并且不打坡口的构件，建议用修正半径方式下料，否则拼接时焊缝较宽并且角度会偏大。
1) there are two ways to calculate the intersection lines of the circular pipe of this component, one is to calculate the blanking length of each plain line of the inclined opening with the radius from the center of the circle to the center of the plate, that is, "plate medium diameter"; the other is to calculate the length of each plain line of the inclined opening at the high end with the inner radius, and calculate the length of each plain line of the inclined opening at the low end with the outer radius, that is, "correction radius". If the plate is thin or the plate is thick, but the center line of the plate is used as the benchmark for beveling, it is recommended to use the plate pitch diameter method for blanking; if the plate is thick and the component is not beveled, it is recommended to use the modified radius method for blanking, otherwise the weld joint will be wider and the angle will be larger during splicing.
2）示意图中d为圆管内径，a为弯头角度，R为弯头中线转角半径，L1、L2分别为两端节加长的长度，b为板材厚度。要求180>＝a>0，d、b>0，R>=d，若管道地方狭窄，允许d<R>0.6*d，但管道阻力会增加。以上数据由操作者确定后输入。
2) in the schematic diagram, D is the inner diameter of the pipe, a is the angle of the elbow, R is the radius of the corner of the middle line of the elbow, L1 and L2 are the lengthened length of the two ends of the joint, and B is the thickness of the plate. It is required that 180 > = a > 0, D, b > 0, R > = D. if the pipeline is narrow, d < R > 0.6 * D is allowed, but the pipeline resistance will increase. The above data shall be input after being determined by the operator.