Fiberglass Ventilation For mining and tunneling applications

Phenolic resin: the manufacturing difference that results in a

better product

Schauenburg Fiberglass Ventilation Ducting is manufactured for use in mining and tunneling applications. Schauenburg combines a filament winding process and phenolic resin for maximum fiberglass duct strength. One of the advantages of phenolic resin is its excellent acid resistance which is a result of the acid cure process. Because phenolic resin is water-based and polyester is oil-based, phenolic resin is inherently flame resistant, and no fire inhibitors and added. These inhibitors detract from the strength of the polyester resins making them more brittle. See the Flame Resistance Properties chart at lower right opposite page for a comparison of Schauenburg phenolic duct to polyester duct.

Fiberglass Oval ducting provides clearance for mine vehicles.

Construction Filament wound fiberglass ducting. Smooth inner surface – low friction

loss. Tapered and straight ends for airtight

joints. Easy installation – guaranteed fit. Strong steel straps with D-Rings for

interlocking of sections and/or suspension for added strength and safety.

Tapered ends specially reinforced.

Pic 1—24” dia duct crush test with pressure Pic 2– 24” dia duct with pressure released applied using fork lift (duct returns to proper shape)

Schauenburg Property Phenolic Duct Polyester Duct Interpretation Impact Test 88 72 Ability to resist a point impact Flex Strength 58,619 66,676 Load Bearing (PSI) (Normalized) strength Flex Modulus 2325 1534 Stiffness (KPSI) Impact Test: Data was collected using a Gardner Variable Height Tester Flex Strength: ASTM D-790 Flex Modulus: ASTM D-790 Greater stiffness allows higher negative pressure capability at equal weights. Exceeds safety standards Schauenburg Fiberglass Ventilation Ducting meets Mine Safety Health Administration (MSHA) flame test requirements for face ventilation ducting and is built to the same standards for antistatic requirements as our British and Canadian sister companies. Schauenburg duct meets all UL181, NFPA 90A, NFPA 90B standards with sealed connectors. Flame resistant properties Schauenburg Property Phenolic Duct Polyester Duct Test Method OSU Heat Release 18/37 70/79 ASTM E-1354 (2 min./peak) Flame Spread 2 UNK ASTM E-162 Index 5 UL181 Smoke Density 1/1/5 104/657/666 ASTM E-662 (90 sec/4 min./max) 0 UL181 Ignition Properties 1130/1130 740/740 ASTM D-1929 (flash/self-ignition) Mold Growth No growth/ UNK UL181 deterioration Resin Content 30% 43% Smoke Low Very high

Seals Dual Gum Rubber seals for clean

and acidic environments. No seal for low pressure applica-

tions and short runs

Ventilation Fittings

Tee

Lateral Wye

Capitol Wye

Fan Adaptor

Flexible Elbow(Flexell)

Elbow

Reducer

Butterfly Damper

High Strength Suspension 3” D-rings held on by steel straps

(Standard) Optional Rope Handles Optional Steel Handles

Reinforcing ribs in high pressure duct (available) Tight bell—low leakage

(tunneling applications) Loose bell—easy installa-

tion (coal mining applica-tions)

10’ and 20’ standard lengths Other lengths available

Oval Round Dimensions Area Wt/10’ Dimensions Area Hydrolic Dia Wt/10’ (inches) (Millimeters) (Sq/Ft) (LBS) (inches) (Millimeters) (Sq/Ft) (Inches) (LBS) 12 305 0.79 26 14 356 1.07 29 11x19 3/4 275x475 1.34 14.8 40 16 406 1.40 35 11x22 1/2 275x550 1.54 15.4 70 18 457 1.77 65 12x27 300x700 2.03 17.3 81 20 508 2.18 70 22 559 2.64 72 16x30 400x760 2.98 22.2 110 24 610 3.14 80 26 660 3.69 90 28 711 4.27 100 20x36 500x900 4.68 28.3 123 30 762 4.91 120 26x43 650x1100 6.75 33.6 170 36 914 7.07 125 28x51 700x1300 8.77 37.6 200 42 1,067 9.62 145 32x54 800x1350 10.46 41.7 230 48 1,219 12.56 162 38x63 965x1600 16.63 48.0 270 54 1,372 15.90 212

Duct Shapes Oval Duct (shown) Round Duct

(available)

Advantages & Features Holds its integrity in a fire longer than metals. FRP will operate up to 200°C while

maintaining stability. Fire resistant according to ASTM E-162 with flame spread index of less than 25. Will not promote or sustain combustion. Thermal conductivity is much lower than

metals 0.20 – 0.24 w/m/k.3. Anti-static properties 10³ ohms @ 1% wt. surface re-sistivity.

Fiberglass Bell/Spigot ensures a safer installation – eliminating pinch points (flanged joints are available).

Joints – Bell and Spigot can move 7 degrees right to left and up or down for direc-tion.

Available with a flanged end. Flanges are installed prior to filament winding. Flanged FRP minimizes leakage and provides stabilization from high shock waves during the blasting cycle. V-lock couplings speed up installation.

Less than half the weight of steel. For example a FRP Oval (36x62) x 20’ = 400 lbs approximately, whereas the identical sized steel vent would be approximately 1,000 lbs.

Low installation cost due to lightweight pipe. Joints are manufactured complete with internal rubber gaskets to prevent leakage

and reduce resistance at the joints. When subject to loading or impact, FRP springs back to shape (memory), while

metal will dent and leak and may start to recoil. Smooth interior to guarantee low flow resistance and therefore an increase in

power savings. EMR/CSA and MSHA approved for underground. Can withstand high positive and negative pressures. Acid mine water resistant and rot proof. Band-Aids are available. Long service life.

Fiberglass fittings and duct components available in many standard and custom configurations.

Schauenburg fiberglass ducting resistance chart

Over half a century of worldwide engineering experience goes into manufacturing a complete line of integrated products designed for all types of ventilation projects.

2233 Sanford Drive Grand Junction, CO 81505 U.S.A. T (970) 245-9400 F (970) 245-9402

188 Van Kirk Drive #4 Fairmont, WV 26554

U.S.A.

T (304) 363-0868 F (304) 363-0875

Info@Schauenburg.us www.schauenburg.us

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