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Fire Roller Shutter Drum
QS Pipe: Fire Roller Shutter Drum
Name: Fire Roller Shutter Drum
Material: Q235-B / Stainless Steel
Size: 1"- 4"
Length: 1.5m - 6m
Thickness：4.0 mm
Customized Service: Yes
Price: USD 30 - 100
Delivery: 15-30 Day
Application: For Roller Shutter
Material: Q235-B / Stainless Steel
Size: 1"- 4"
Length: 1.5m - 6m
Thickness：4.0 mm
Customized Service: Yes
Price: USD 30 - 100
Delivery: 15-30 Day
Application: For Roller Shutter
Quantity
Our Fire Roller Shutter Drum is manufactured using Q235-B or 304 stainless steel, with a wall thickness of no less than 4.0 mm. The tube diameter ranges from 1 inch to 4 inches, and the length can be customized from 1.5 m to 6 m, making it suitable for various industrial, commercial, and fire-compartment rolling shutter door systems. The drum body is formed through high-precision roll forming and dynamically balanced to ensure smooth, low-noise operation at high rolling speeds, with no deformation or weld failure over long-term use. The surface anti-corrosion treatment meets C4 level or above, making it suitable for humid, high-temperature, or mildly corrosive environments. We support custom non-standard lengths, wall thicknesses, and end-plate welding configurations, with fast delivery in 15–30 days. The unit price ranges from only USD 30 to 100, offering high cost-effectiveness while maintaining fire resistance integrity. Our product is the preferred reliable Chinese supply chain choice for door manufacturers and engineering contractors.
Core Distinction: Fire Roller Shutter Drum vs. Standard Roller Shafts
The fundamental difference between a Fire Roller Shutter Drum and an ordinary roller shaft is this: ordinary shafts pursue"lightweight, fast, and cheap,"while a true Fire Roller Shutter Drum is engineered to"stay intact in a fire."
The fundamental difference between a Fire Roller Shutter Drum and an ordinary roller shaft is this: ordinary shafts pursue"lightweight, fast, and cheap,"while a true Fire Roller Shutter Drum is engineered to"stay intact in a fire."
1. Material & Wall Thickness
- Standard shaft: Typically made of Q235 or galvanized steel, with wall thickness usually 2.0–3.0 mm, sufficient only for routine fatigue strength.
- Fire Roller Shutter Drum: Mandatorily uses Q235-B or 304 stainless steel, with a wall thickness of no less than 4.0 mm (as required by GB 14102). During a fire, the curtain's self-weight plus the added weight from water-spray deluge systems significantly increase the bending moment on the shaft. Thin-walled tubes will prematurely yield and deform under high temperatures, causing the curtain to jam or collapse. Only a qualified Fire Roller Shutter Drum can guarantee structural safety in a fire scenario.
- Standard shaft: Typically made of Q235 or galvanized steel, with wall thickness usually 2.0–3.0 mm, sufficient only for routine fatigue strength.
- Fire Roller Shutter Drum: Mandatorily uses Q235-B or 304 stainless steel, with a wall thickness of no less than 4.0 mm (as required by GB 14102). During a fire, the curtain's self-weight plus the added weight from water-spray deluge systems significantly increase the bending moment on the shaft. Thin-walled tubes will prematurely yield and deform under high temperatures, causing the curtain to jam or collapse. Only a qualified Fire Roller Shutter Drum can guarantee structural safety in a fire scenario.
2. Structural Reinforcement (Torsional & Bending Resistance)
Ordinary shafts are mostly hollow straight tubes with both ends welded to end plates. In contrast, every Fire Roller Shutter Drum must incorporate internal stiffening ribs or liner sleeves, with end plates having a thickness of ≥10 mm, and all welds requiring full-penetration groove welding rather than standard spot welding. This ensures that under 1000°C flame exposure, the Fire Roller Shutter Drum maintains overall rigidity for at least 2 hours, preventing torsional deformation that could cause guide rail dislodgement – a standard that ordinary shafts simply cannot meet.
Ordinary shafts are mostly hollow straight tubes with both ends welded to end plates. In contrast, every Fire Roller Shutter Drum must incorporate internal stiffening ribs or liner sleeves, with end plates having a thickness of ≥10 mm, and all welds requiring full-penetration groove welding rather than standard spot welding. This ensures that under 1000°C flame exposure, the Fire Roller Shutter Drum maintains overall rigidity for at least 2 hours, preventing torsional deformation that could cause guide rail dislodgement – a standard that ordinary shafts simply cannot meet.
3. Bearings & Supports (Safety Redundancy)
Ordinary shafts use standard pillow-block ball bearings. However, a Fire Roller Shutter Drum must utilize high-temperature self-lubricating bearings (≥300°C), with brackets secured by double-row bolts. Additionally, the shaft ends must be pre-fitted with mounting positions for mechanical limiters and gravity-release fuse dropout devices – features entirely absent on ordinary shafts. This represents the critical safety redundancy design unique to fire-rated drums.
Ordinary shafts use standard pillow-block ball bearings. However, a Fire Roller Shutter Drum must utilize high-temperature self-lubricating bearings (≥300°C), with brackets secured by double-row bolts. Additionally, the shaft ends must be pre-fitted with mounting positions for mechanical limiters and gravity-release fuse dropout devices – features entirely absent on ordinary shafts. This represents the critical safety redundancy design unique to fire-rated drums.
4. Dynamic Balancing & Thermal Expansion Clearance
The Fire Roller Shutter Drum must undergo high-temperature simulated dynamic balancing tests before delivery (ordinary shafts require only room-temperature static balancing). Moreover, when the shaft length exceeds 4 m, a 2–3 mm thermal expansion gap must be reserved to prevent the shaft from expanding and cracking the side plates during a fire – a detail that ordinary shafts do not consider, yet is an essential requirement for every qualified Fire Roller Shutter Drum.
The Fire Roller Shutter Drum must undergo high-temperature simulated dynamic balancing tests before delivery (ordinary shafts require only room-temperature static balancing). Moreover, when the shaft length exceeds 4 m, a 2–3 mm thermal expansion gap must be reserved to prevent the shaft from expanding and cracking the side plates during a fire – a detail that ordinary shafts do not consider, yet is an essential requirement for every qualified Fire Roller Shutter Drum.
5. Anti-Corrosion Coating & Traceability Marking
The galvanized coating on a Fire Roller Shutter Drum is ≥85 μm (compared to only 60 μm for ordinary shafts). Furthermore, each drum must be permanently stamped with steel markings indicating specifications, material, fire-resistance rating, and production batch number, ensuring full traceability – whereas ordinary shafts only require adhesive labels. This means every Fire Roller Shutter Drum comes with a complete quality ID, providing reliable documentation for project acceptance and long-term maintenance.
The galvanized coating on a Fire Roller Shutter Drum is ≥85 μm (compared to only 60 μm for ordinary shafts). Furthermore, each drum must be permanently stamped with steel markings indicating specifications, material, fire-resistance rating, and production batch number, ensuring full traceability – whereas ordinary shafts only require adhesive labels. This means every Fire Roller Shutter Drum comes with a complete quality ID, providing reliable documentation for project acceptance and long-term maintenance.
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