rolling shutter counter and serving windows

ROLLING SHUTTER COUNTER AND SERVING WINDOWS FREE

The spring steel wire used or helical spring should conform to Grade 2 of IS:4454. The springs used in the roller for counter balancing the rolling shutter should be made either from high tensile spring steel wire or flat spring steel strip.

ROLLING SHUTTER COUNTER AND SERVING WINDOWS FREE

These should be free of blow holes, surface defects such as cracks, burrs etc. GI Pipes used for the suspension shaft of the roller should be heavy duty pipe suitable for mechanical purposes and shall conform to IS:1161.Ĭast Iron Castings used for roller pulley wheels, U-clamps shall conform to Grade 15 of IS:210. The coating shall be free from flaking/peeling. The minimum weight of zinc coating to be 230 g/sq.m. All components of rolling shutter to be hot dip galvanised with a zinc coating containing not less than 97.5% pure zinc. These shall be free from surface defects and the edges shall be cleanly sheared. GI Sheets and Plates used for manufacturing the guide channels, brackets and lock plate should be of hot rolled steel of thickness not less than 18 gauge conforming to IS:5986. These are mounted on specially designed pipe shaft.Ĭold Rolled Steel Strips used for rolling shutter lath sections shall conform to temper No. Laths are inter-locked together throughout its entire length and jointed together at the end with end locks. The shutter consist of 80 mm wide MS laths 1.25 mm thick or gauge as specified of mild steel sheet machine rolled. Gear operated shutters are provided with reduction gear operated by mechanical device with chain, crank, shaft and handle. Hand operated shutters are of push and pull type. Rolling shutter can be hand operated or gear operated. outside or inside on or below lintel or between jambs of the opening.

The rolling shutter accessories should be as specified and approved should be suitable for fixing in position as specified i.e. Metal Rolling Shutters should conform to IS:6248. Here I am trying to put general information about rolling shutter and its materials, fixing methods and other details. The specification of rolling shutter shall be as per the requirement of the client. Rolling shutters are a type of door normally used for godowns and shops.

Rolling shutter counter and serving windows