Aalok Metals & Minerals

1. STANDARD MINIMUM STRAIGHT LENGTH OF DUCT AND COVER SHALL BE 2500 MM.
2. DUCT SHALL BE FABRICATED OUT OF STANDARD SIZE OF ANGLES.
FLATS, ROAD AND SHEETS / PLANTS AS PER INDIAN STANDARD.
3. BOLTS, NUTS AND WASHERS SHALL BE SS-304.
4. STRAIGHT PORTION OF DUCT SHALL BE PRE-FABRICATED. HOWEVER SELECTIONS LIKE
TEES, BENDS REDUCERS ETC. MAY BE SITE FABRICATED AS PER ACTUAL SITE CONEITIONS
MEETING THE REQUIREMENTS OF GALVANIZING.
5. GALVANIZING SHALL BE CARRIED OUT ONLY AFTER COMPLETION OF DRILLING, WELDING
AND ANY OTHER FABRICATION WORK. NO WELDING AND DRILLING IS ALLOWED AFTER
GALVANIZATION.
6. DUCT SHALL BE FREE OF ANY BURRS / SHARP EDGES AND WELDING SHALL BE OF GOOD
QUALITY.
7. ALL MEMBERS, SHEETS AND OTHER MATERIAL SHALL BE GALVANIZED ONLY.
8. IMPORTANT:
WITHIN THE DUCT, THE PARTITION HEIGHT SHALL BE UPTO THE DUCT COVER, PROVIDING
BOTTOM SUPPORT TO THE COVER PREVENT SAGGING.