RolamateT is a flanging system where an assembled frame "Slip-On" and is fastened to the duct side walls. The sections are then connected to each other by 4 bolts - one at each corner. |
Rolamate™ Trademark Components |
Slip-on Flanges |
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- Roll-formed G. I. section with embedded sealant.
- Available in different cross-sections to provide a range of rigidity and strength characteristics.
- Available for 26-gauge to 22-gauge ductwork, in the form of
- Rolamate E Flange
- Rolamate H Flange
- Rolamate J Flange
- Meets SMACNA rigidity class for transverse joints.
- Available in cut-to-size length at job site.
- Rolamate profile offers good aesthetic look.
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Slip-on Flanges |
- To be inserted into the hollow web of the slip-on flange.
- Available in 3 different types
- 4 corner pieces are required for each rectangular frame, 8 corner pieces per joint.
- Leg Square hole provided for ease in tightening with ratchet spanner.
- “Rolamate E/H/J” stamped on corner for easy identification.
- Legs of corner are embossed in accordance with the recess in the flange for ease in fitting.
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Sealant |
- To be applied as a thin bead at the interface of duct and ROLAMATE ™ corner piece only.
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Cleats |
- G. I. Metal Cleat 100 mm in length can be snap-fitted or slid over the mating flanges.
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Gasket |
- Self adhesive, microcellular, cross-linked, Polyethylene foam type. (Alternatives : PVC or Neoprene)
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Bolts, Nuts and Washer |
- Electro-galvanised, square-necked carriage bolts, with flanged nuts or nuts and washers.
- Each joint requires 4 sets.
- Two round holes are provided for alignment while connecting two duct sections.
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The Rolamate™ is designed and manufactured in different sizes and thickness to meet even a class of 6 and rigidity classes ‘E’, ‘H’ and ‘J’ as specifies by SMACNA. |
Each of these systems have been independently tested and certified by nationally recognized 3rd party testing for conformance with SMACNA/ DW-143 for leakage resistance and rigidity. |
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Features of Rolamate™ |
Design criteria |
- Indigenous components only.
- Ultra-low air leakage in the system, to save on energy costs.
- A very high strength-to-weight ratio, to minimise the raw material costs.
- High productivity at job sites through ease assembly and installation.
- Slip-on Feature of the assembled flange.
- Easy fastening of flanges with duct sides (by punch-lock fastener, pop-rivets, self-tapping screws or spot-welding.)
- Requires only four corners bolts to be tightened.
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Key features of the components |
- Flange Design:
- A double top rib to give a very high EI value to the flange (high strength - to - weight ratio).
- Recessed Grooves for:
- imparting greater strength to the flanges
- providing a "seat" for the self adhesive gaskets (useful in the assembly and installation of flanges)
- A special "pocket" for the built-in sealant which runs the length of the flange and which fully envelopes the duct side wall edge when fully seated.
- A non-toxic, permanently semi-soft sealant (to avoid hardening and shrinkage at later stages).
- Corner Design:
- Raised contour in the corner piece to match the recessed groove of the flange, for achieving low leakage.
- Square hole to match the square neck carriage bolt which can be tightened using one hand only ( useful at heights)
- Holes to facilitate alignment of the duct assembly.
- Strong, stiff corners to avoid bending during transportation and storage.
- Flange Selection Criteria:
- (Recommended Configurations as per SMACNA*1 - 1995)
- ROLAMATE T Flanges are available in different sizes and identified by its Rigidity/Reinforcement "Class" as per SMACNA.
- The proper selection of the right flange depends on the independent parameters:
- Duct static pressure
- Duct size
- Spacing between joints and/or reinforcements at 1200 mm (4')
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Rolastar Standards For Selection Of Rolamate Flange Class And Duct Gauges At 1200 Mm Spacing |
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Duct
Dimension |
1"(250) *5 |
Duct Pressure in Inches / (Pascals) |
10"(2500) |
2"(500) |
3"(750) |
4"(1000) |
6"(1500) *4 |
(in mm) |
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Reinforcement Class - Duct Gauge |
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Upto 250 |
*3 E-26 |
E-26 |
E-26 |
E-26 |
E-26 |
E-24 |
251-300 |
E-26 |
E-26 |
E-26 |
E-26 |
E-24 |
E-24 |
301-350 |
E-26 |
E-26 |
E-26 |
E-26 |
E-24 |
E-22 |
351-400 |
E-26 |
E-26 |
E-26 |
E-26 |
E-24 |
E-22 |
401-450 |
E-26 |
E-26 |
E-26 |
E-26 |
E-24 |
H-20 |
451-500 |
E-26 |
E-26 |
E-24 |
E-24 |
E-24 |
H-20 |
501-550 |
E-26 |
E-26 |
E-24 |
E-24 |
H-24 |
H-20 |
551-600 |
E-26 |
E-26 |
E-24 |
E-24 |
H-22 |
H-20 |
601-650 |
E-26 |
E-26 |
E-24 |
E-24 |
H-22 |
H-20 |
651-700*2 |
E-26 |
E-26 |
E-24 |
H-24 |
H-22 |
H-18 |
701-750 |
E-26 |
E-26 |
E-24 |
H-24 |
H-22 |
J-18 |
751-900 |
E-26 |
E-24 |
H-22 |
H-22 |
H-20 |
J-18 |
901-1000 |
E-26 |
H-24 |
H-22 |
H-20 |
J-18 |
J-16 |
12 01-1300 |
*3 H-24 |
H-20 |
J-18 |
J-18 |
J-16 |
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13 01-1500 |
H-24 |
H-18 |
J-18 |
J-16 |
NOT
DESIGNED |
15 01-1800 |
H-22 |
J-18 |
J-16 |
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18 01-2100 |
*3 J-20 |
J-20 |
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2101-2400 |
J-18 |
J-18 |
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2401-2700 |
J-18 |
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Notes: |
- SMACNA-Sheet Metal and Air conditioning Contractors’ National Association Inc - "HVAC Duct Construction Standards-Metal and Flexible" - 1995, U.S.A.
- Reading Guide - For duct sizes between, say, 651 mm and 700 mm, when the pressure class is 1” w.g. static, we require a ROLAMATE 'E' Class Flange and duct gauge of 26. For the same size range but with static pressure at 4” w.g. a ROLAMATE 'H' Class Flange with duct gauge of 24 should be used.
- Slip-and-Drive (C and S/ SS) cleats are generally used for class C connectors in most normal comfort costing applications.
- The ROLAMATE Flange classes available are designated E, H and J. For E & H Class of ROLAMATE use gasket size 10 mm wide and 4.5 mm thick. For ROLAMATE J-Class use 15 mm wide and 6 mm thick gasket.
- For pressure class 6” w.g. static and above contact Rolastar to confirm the gasket type & size requirement.
- For non-critical comfort cooling applications (1” w.g. pressure class), optional "C & S" or "C & SS" cleat joints can be used.
- Upto 450 mm duct size use "C & S" cleats.
- 451 to 750 mm duct size use "C & SS" cleats.
- Over 750 mm duct size use ROLAMATE Flanges.
- Note: A higher-class flange can always be substituted for a lower class (e.g. class "J" for class "H", class "H" for class "E").
- ROLAMATE Flanges have been designed to meet the appropriate SMACNA-1995 Reinforcement Classes and tested successfully at Rolastar to meet the rigidity and leakage requirement in accordance with both
- SMACNA testing norms and practices.
- Benchmarking with leading international 4-Bolt systems.
- All tests are carried out with ROLAMATE ™ System Components. For further details on test procedures mail us at ho@rolastar.com.
- It is mandatory to use all ROLAMATE System Components specifically Rolastar supplied gasket to obtain the desired performance.
- All Components are Fully Galvanised to make it:
- A formal training program for Contractors supervisors and technicians conducted at plants and job sites. (Click here for more on Site Contractor Training Program)
- Special purpose equipments and tools to facilitate Rolamate/ Duct Assemblies and erection. (Click here for more on Tools and Accessories.)
- Leakage Testing Service. (Click here for more on Air Duct Leakage Tester.)
- Other Aspects to benefit from Rolamate:
- Rust-free
- Aesthetically appealing
- Uniform in appearance
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Quantifiable and tangible benefits: |
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3rd Party Tests |
Strong Benchmarks 3rd Party Tests |
Air Leakage/ Energy benchmarks |
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Details of Energy Savings |
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Description |
Rolamate |
TDC/TDF |
Angle Iron |
Cleats/G.I. flanges |
1 |
Normal Leakage (%) |
1-3 |
5-10 |
10-20 |
15-30 |
2 |
Savings |
High |
Medium |
Low |
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Unique Characteristics: |
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Rolamate |
TDC/TDF |
Angle Iron |
Cleats/G.I. flanges |
Structural Rigidity |
High |
Poor |
Very High |
Very Poor |
Strength-to-weight ratio |
Very High |
Poor |
Medium |
Very Poor |
Installation Speed |
Fast |
Fast |
Cumbersome |
Average |
3rd Party testing and Certification |
Certified |
Not Available |
Not Available |
Not Available |
Environment |
Friendly |
Friendly |
Harmful |
Friendly |
Potential Damage in Transportation |
Low/Nil |
Yes |
Low/Nil (fabricated at sites) |
Low/Nil |
Overall Costs |
Comparable |
Comparable |
Comparable |
Low |
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Functional Advantages as Efficient Duct Conductors : |
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Rolamate |
Angle Iron |
Leakage |
Tested and Certified by third party for leakage with reference to SMACNA and DW-143 standards
(Click for certifications) |
Leakage rate not readily verifiable due to the absence of standardized fabrication process in India |
Structural Rigidity |
Deflection tests confirm that it complies with the limits specified under SMACNA 1995
(click for certification) |
No standard test results is available |
Installation Speed |
Extremely fast as only 4-bolts are to tightened |
Cumbersome- requires several MS rivets & bolts |
Economics Certification |
Overall cost is minimal given the fast speed of installation and lower leakage rates |
True cost is generally underestimated.
(click for cost computations) |
Aesthetics |
Fully Galvanized, aesthetically pleasing |
Painted with red oxide primer - a suspected carcinogen |
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