Basic Process Of Carbon Steel Elbows

Firstly, weld a polygonal multi ribbed annular shell or a closed multi ribbed fan-shaped shell with both ends. After filling the interior with pressure medium, apply internal pressure, and under the action of internal pressure, the cross-section gradually changes from a polygon to a circle, ultimately becoming a circular annular shell. According to the needs, a circular ring shell can be cut into 4 90 ° elbows, 6 60 ° elbows, or other specifications of elbows. This process is suitable for manufacturing large elbows of any specification with a pitch diameter to inner diameter ratio greater than 1.5 times, and is an ideal method for manufacturing large carbon steel elbows.