Rolamate

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
  • 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
  • Meets SMACNA rigidity class for transverse joints.
  • Available in cut-to-size length at job site.
  • Rolamate profile offers good aesthetic look.
 
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.
 
Sealant
  • To be applied as a thin bead at the interface of duct and ROLAMATE ™ corner piece only.
 
Cleats
  • G. I. Metal Cleat 100 mm in length can be snap-fitted or slid over the mating flanges.
 
Gasket
  • Self adhesive, microcellular, cross-linked, Polyethylene foam type. (Alternatives : PVC or Neoprene)
 
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.
 
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.

 
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.
 
Key features of the components
  • Flange Design:
  • Corner Design:
  • Flange Selection Criteria:
 

Rolastar Standards For Selection Of Rolamate Flange Class And Duct Gauges At 1200 Mm Spacing

Duct
Dimension

1"(250) *5

Duct Pressure in Inches / (Pascals)

10"(2500)

2"(500)

3"(750)

4"(1000)

6"(1500) *4

(in mm)

Reinforcement Class - Duct Gauge

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

 

13 01-1500

H-24

H-18

J-18

J-16

NOT
DESIGNED

15 01-1800

H-22

J-18

J-16

 

18 01-2100

*3 J-20

J-20

 

 

2101-2400

J-18

J-18

 

 

2401-2700

J-18

 

 

 

 
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.
  • 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
  • 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:
  • Other Aspects to benefit from Rolamate:
 
Quantifiable and tangible benefits:
 
3rd Party Tests
Strong Benchmarks 3rd Party Tests
Air Leakage/ Energy benchmarks
 
Details of Energy Savings
 

 

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

-----

 
Unique Characteristics: 
 
 

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

 
Functional Advantages as Efficient Duct Conductors :
 
  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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