What Are Fire Pipes?
Conforming to IS 1239 (Part 1):2004 Heavy Class and the National Building Code (NBC 2016 Part 4), fire fighting pipes are IS 1239 Heavy Class (Class C) steel pipes mandated for sprinkler, standpipe, and hydrant systems - Medium or Light Class pipes are not permitted for fire service. Per the IS 15105, Heavy Class walls withstand the surge pressures from fire-pump activation. GI pipes are used for wet sprinklers; black MS for dry systems and underground mains. Grooved-end (Victaulic) and threaded connections available.
- IS 1239 Heavy Class (Class C) - mandatory for fire protection per NBC
- Galvanized (GI) for wet systems, black MS for dry systems and underground
- Grooved-end (Victaulic) and threaded connection options
- UL Listed and FM Approved options for international project specifications
Specifications We Stock
| Nominal Bore (NB) | 15mm (½") to 150mm (6") per IS 1239 Part 1 |
|---|---|
| Wall Thickness | Heavy Class (Class C): 2.6mm to 5.4mm |
| Standards | IS 1239 Part 1 Heavy, ASTM A795, UL 852, FM 1635 |
| Finish | Black MS, hot-dip galvanized (GI), red oxide primer |
| End Finish | Threaded & coupled (T&C), grooved-end, or plain-end |
Common Applications
- Commercial Buildings: Wet sprinkler systems, standpipe risers, fire hydrant loops in offices, malls, hotels.
- Industrial Facilities: Deluge systems, foam systems, fire water mains in factories and refineries.
- Residential High-Rise: Sprinkler networks, riser mains, and terrace tank connections per NBC.
- Warehouses & Logistics: High-piled storage sprinkler systems, rack sprinklers, in-rack piping.
Source Mills We Work With
We procure materials exclusively from highly reputed Indian and global steel mills, including:
Applicable Standards & Specifications
MS Heavy Class vs CPVC for fire systems
Most modern Indian fire system designs blend MS Heavy Class with CPVC - MS for the high-pressure riser and hydrant network, CPVC for the sprinkler branches inside conditioned spaces. The table summarises the tradeoffs.
| Factor | MS Heavy Class | CPVC |
|---|---|---|
| Temperature rating | -10 °C to +250 °C | -10 °C to +93 °C |
| Pressure rating | 20 kg/cm² | 12 kg/cm² @ 23 °C |
| Joint method | Welded or grooved (Victaulic) | Solvent welded |
| Standard | IS 1239 HC + IS 13039 | ASTM F442 + ASTM F493 |
| UL listing | Optional (LPCB common in India) | UL Listed (US standard) |
| Indian govt fire NOC | Yes | Yes (since 2016) |
| RP supply | Stock | Not stocked |
Selection guidance: government tenders and industrial fire systems default to MS Heavy Class; commercial high-rise sprinkler branches commonly use CPVC; mixed designs use MS HC for risers and hydrants with CPVC for sprinkler distribution. We supply the MS Heavy Class side off the shelf.
How To Order
- Specify nominal bore (NB), confirm Heavy Class (Class C), and finish (black or GI).
- Indicate end connection - threaded & coupled (standard) or grooved-end.
- Provide quantity in meters or MT and delivery location.
- Approve quotation and PO - we dispatch from Kanpur stockyard.
Get a quote for Fire Pipes
Share your sizes and grade. We reply with stock, pricing, and lead time.
Frequently Asked Questions
Why is IS 1239 Heavy Class mandatory for fire fighting?
What does UL Listed mean for fire fighting pipes?
Should I use GI or black MS pipes for fire sprinklers?
Related
- Calculate the weight of Fire Fighting Pipes for your BOQ Size, wall, and length to MT before requesting a quote.