Production Flow Chart of Bend Rolled Pipe Production Line
Reference for underground steel pipe of MWA and PWA standard.
MWA : Metropolitan Waterworks Authority (Thailand)
PWA  : Provincial Waterworks Authority (Thailand)
 

Specification :
  • Inside painting by liquid epoxy min. 406 microns DFT. to AWWA C210 standard or inside cement mortar lining to AWWA C205 standard.
Criteria for Quality Control Inspection :
  • 100% Checked by production staffs and 10% rechecked by quality control staff.
  • If no defect is found, all steel pipes in that lot will be passed inspection.
  • If one defect is found, all steel pipes in that lot have to be re-checked 100 % and select only the conforming pipes to passed inspection.

Flowers