The arch rib of Nanning Yonghe Bridge in Guangxi is of an equal width & variable height concrete-filled steel tube hingless arch structure; the full span of the arch rib is 3 metres wide; the arch rib height changes from 8 metres at the arch crown section to 13.2 metres at the springing; the designed net rise of arch is 70 metres. The fabrication of arch ribs undertaken by the Company includes fabrication of tubular segments, fabrication of arch tube parts, matching fabrication and pre-assembly of main arch ribs.