The official update covers complex large-diameter tube columns and names a Beijing University of Technology project. Unpublished diameter, wall thickness, weld class or batches are omitted.

Large tubes need rolling, welding and dimensional checks on that job’s process sheet. This page does not set ovality or NDT ratios.

Send diameter, thickness, length, end conditions and the code. Without those values only the shop interface can be discussed.

Attach a drawing list. Unpublished counters or certificates stay off this article.

Tiankai Southeast fabricates marked members from approved drawings and supports erection by mark number. Sizes, loads and delivery follow the confirmed design file and contract; this page does not turn uncalculated tonnage, thickness or time into a promise.