BUKAN PIPE
HDPE Pipe Welding: Butt Fusion and Electrofusion
Standard PE pipe jointing methods.
Published
In PE pipeline construction, joint quality determines network durability. Proper fusion minimises leakage, controls pressure loss and avoids flow disturbance at joints.
Electrofusion
In electrofusion, pipe ends are inserted into a socket fitting with embedded heating coils. Current melts the interface; after cooling a monolithic joint forms. This method is approved for gas distribution in Iran and offers high joint factor when parameters and inspection are correct.
Butt fusion
Per INSO 18648, prepared pipe ends are heated on a facing plate to specified temperature and joined under controlled force. Steps include cleaning, clamping, facing, alignment, heating, joining and controlled cooling under pressure.
Quality control
- Qualified welders and approved procedure (PQR) before production welding
- Parameter logging and visual bead inspection
- Non-destructive testing on sensitive projects where specified
FAQ
- Which welding method is used for municipal gas?
- Electrofusion is the approved method for gas in Iran. Butt fusion is more common in water supply.