‧Traditional practices :
Plate → Roll (punch) pressed into a quarter round then welding 2 pieces of quarter round becomes a bellows → ​​subject to annealing (stress relief).
Shortcoming :
  • Inside and outside curve is uneven and the thinning rate (produced uneven thickness).
  • There are traces of rolling surface scratches easily.
  • Welding not easily and the defects found by X-Ray detection will be difficult to repair
    • ‧Current technology :
    Plate → longitudinal weld bead plate (L line welding) → Hydraulic forming.
    Advantage :
  • The traditional practices of the Shortcomings neither exist.
    • ‧2007~2012 Annual sales statistics I :
    ‧2007~2012 Annual sales statistics II :
    ‧Product focal sale & Industry actual delivery :
    ‧Regional sales ratio :
    TEL:886-3-328-7676    FAX:886-3-328-7858
    E-mail:joe.bellows@msa.hinet.net
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