Problems in opening thick-walled composite panels
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Risks to be considered during the manufacturing of composite Q345R 100+3 pipe fittings with dn200 insert-type connections
The weld seam must be ground to make the interior smooth. If the plate is thick while the fitting is thin, it may damage the fitting during welding.
Penetration welding and ultrasonic testing are generally required. The takeover groove is preferably machined, with a double-sided U-shaped groove; welding heat input should be controlled, and interpass cleaning is necessary.