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Manufacturing Process

Sangjin Gratings are manufactured according to the strict standards of the National Association of Architectural Metal Manufacturers (NAAMM)
and our in-house TQC system.

STEP 01
MATERIAL SELECTION
STEP 02
AUTOMATIC PROJECTION WELDING
STEP 03
CUTTING
STEP 04
OUTSIDE GRINDING TREATMENT
STEP 05
INSPECTION
STEP 06
HOT-DIP GALVANIZING
STEP 07
PACKING
STEP 08
DELIVERY
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