Table 5.

Wall thickness data statistics (mm).

Number of Groups	Wall Thickness at Position 1	Wall Thickness at Position 2	Wall Thickness at Position 3	Wall Thickness at Position 4	Joint Wall Thickness
1	2.838	2.875	2.803	2.799	1.611
2	2.856	2.884	2.838	2.819	1.623
3	2.867	2.885	2.863	2.835	1.631
…	…	…	…	…	…
399	2.872	2.781	2.799	2.815	1.625
400	2.835	2.798	2.819	2.845	1.629