HO scale container-tank 20ft

This is a highly-detailed intermodal 20ft tank. It is compatible with PIKO H0 cars and my previous 20ft container (https://www.thingiverse.com/thing:3372971).

**Update 2023.08.12**
Mk2 of the project is published. The whole model is redesigned into a collection of several variants of tanks: round, rectangular with round corners, different ladders etc. If needed, old files are in "Mk 1.zip" archive.

Main page with project description is here: https://positron96.gitlab.io/projects/container-collection/tank-containers.html

Changed orientation of tank printing and splitting, It is now split in the middle along vertical axis, so that layer lines are less visible. Top valves section are a separate section now.

Full assembly file of one variant is provided as an STL file, so that it can be printed in one piece (due to overhangs, it will be problematic on FDM, but should be better in resin).

Mating holes alignment is also modified and matches PIKO containers and wagons better.