1. What is the application of welded pipes in construction?
Used for:
Scaffolding pipes
Piling
Steel structure columns
Water and fire pipelines
2. What is the application in municipal engineering?
Tap water pipelines
Sewage discharge
Urban gas pipelines
Cable casing
3. What is weld bead?
Weld bead is the raised metal formed at the welding seam. It must be smooth and defect-free.
4. What is weld penetration?
Penetration means the weld metal fully penetrates the pipe wall. Incomplete penetration is a serious defect.
5. What causes pipe ovality?
Causes:
Unstable forming
Uneven cooling
Improper transportation or stacking
