IS 655 : 2006
Air ducts - Specification (Second Revision)
Current edition: 2006
Sectional committee: MED 03 · BIS department: Mechanical Engineering (MED)
What this standard covers
This standard covers materials and constructional requirements of air ducts used for air conditioning and ventilation system (including gas exhausting system).
Scope, quoted from IS 655 : 2006. Read the full standard
How the standard is organised
- 4 CLASSIFICATION
- 5 MATERIALS
- 6 DIMENSIONS
- 7 CONSTRUCTION OF JOINT
- 0 BOLT (FULL THREADED)
- 0 ANGLE FLANGE
- 0 RIVET (FULL CIRCUMFERENCE)
- 0 GASKET
- 0 BOLT (FOUR CORNERS ONLY)
- 0 NUTS (FOUR CORNERS ONLY)
- 0 SAME SHEET FLANGE
- 0 CORNER METAL FITTING
- 0 FLANGE PRESSURE METAL FITTINGS
- 8 REINFORCEMENT OF DUCT
- 0 SLIDE-FLANGE
- 9 SEAL OF DUCT
Edition history (per the BIS registry)
- IS 655 : 2006 — current edition (last reviewed by BIS 2022-01-01)
Where this standard is used on NirmanDost
CPWD DSR E&M 2022
| Item code | Description (verbatim) |
|---|---|
| 16.12.1.1 | Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per appr… |
| 16.12.1.2 | Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per appr… |
| 16.12.1.3 | Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per appr… |
| 16.12.1.4 | Supply, installation, balancing and commissioning of factory fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per appr… |
| 16.12.2.1 | Supply, installation, balancing and commissioning of site fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per approve… |
| 16.12.2.2 | Supply, installation, balancing and commissioning of site fabricated GSS sheet metal rectangular/round ducting complete with neoprene rubber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per approve… |
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Notes
- Status and titles come from the official BIS published/withdrawn standards registry (standards.bis.gov.in exports, July 2026 snapshot). Editions change — verify on the BIS portal before contractual use.
- The standard text is copyright BIS. NirmanDost shows registry metadata and links to the official source only — it never rehosts the document.
- Generated 2026-07-27.