Abstract: At present common problems are staying with bevel processing of the steel pipe end Equal WT butt joint， including short inner straight side，high surface roughness，uneven wall thickness，poor production consistency and low efficiency，etc. The activities concerning improvement of the beveling quality are described here in the article，involving the three major aspects，i.e.，strictly controlling the pipe type，upgrading the production equipment and optimizing the processing technology. After the upgrade，the processed length of the bevel inner straight side can be up to 120 mm，the WT accuracy of the inner straight side section can be up to 0~1.25 mm，the bevel surface roughness is less than 12.5 μm，the bevel processing first-pass-yield is increased from 93.5% up to 98%，and the processing efficiency is increased to more than 98%.