青云翻译

Tailor-welded annular plate and the plate after bending into the shape of the angle bending

Plate welded with the ring and bending angle iron after bending shape

Spell after the ring-like board and the knee bend back plate weld the angle steel knee bend the shape

A circular plate after plate bending and welding to spell angles bend shape after

Plate welded with the ring and bending angle iron after bending shape