Quality Prediction and Control of Reducing Pipe Based on EOS-ELM-RPLS Mathematics Modeling Method

Table 1

Size table of reducing tube.

Ser. number	External diameter of shell	Wall thickness of shell	External diameter of finished pipe	Wall thickness of finished pipe	Number of variable stands	Number of total stands
1	152.5	4.25	42.2	3.56	18	24
2	152.5	10.25	70	10.25	12	18
3	152.5	7.75	139.7	7.72	12	16
4	152.5	6	73.03	5.51	12	12
5	152.5	9.75	114.3	10	10	16
6	152.5	25	121	25	10	12
7	152.5	6	139.7	6.2	10	10