Triple M Fiberglass Standard for Manufacture of Fiberglass Pipe & Fittings

1. Definition

• This standard applies to reinforced polyester/vinyl ester process pipe and fittings manufactured by the custum contact and filament wound methods. Products are intended for aggressive chemical environments including but not limited to pipe, ducting and stacks.

2. Applicable Publications - REF. (ASTM)

• C581-94 Practice for determining chemical resistance of thermosetting resins used in glass-fiber-reinforced structures intended for liquid service. C582-95 Standard specification for contact-molded reinforced thermosetting plastic (RTP) laminates for corrosion-resistant equipment. D-2583 Method of testing for indentation hardness of plastics by means of a Barcol Impressor.

3. General Requirements

• This standard describes the methods, standards and dimensions of fiberglass pipe, fittings, ducting, etc. as manufactured by Triple M Fiberglass Mfg Ltd., which also custom manufactures to customer specifications when requested to do so.

4. Materials

• Resins- The resin used shall be of a commercial grade and shall be evaluated as to service and temperature. The resin will be shown on the work order.

• Reinforcing Material- The reinforcing material shall be a commercial grade of glass fiber having a coupling agent that provides a suitable bond between the glass reinforcement and the resin. The standard materials are 1 1/2 oz.E Glass Mat and 18 or 24 oz. Woven Roving.

• Fillers and Pigments- The resins used shall not contain fillers except as required for viscosity control or fire retardance. Up to 5 percent by weight of thixotropic agent that will not interfere with visual inspection may be added to the resin for viscosity control.

• Surfacing Materials- Shall be nexus veil unless specified otherwise.

• Laminate- The laminate shall consist of the following:
• Primary chemical-resistant surface
• Internal anti-wicking barrier
• Additional structural reinforcing section as required to meet the properties
• Exterior surface

5. Products:

• Hand-Lay Up Pipe- All pipe has a standard corrosion barrier of 1 nexus + 2 layers of 1 1/2 oz. mat, followed by the structural laminate consisting of 1 1/2 oz. mat and alternate plys of 24 oz. woven roving.

• Filament Wound Pipe- All pipe has a standard corrosion barrier of nexus + 2 layers of 1 1/2 oz mat, followed by the structural laminate of 1100 or 2200 tex filament winding.

• Full Face Flanges- All flanges are manufactured as per figure 2. Flanges larger than 24" dia. may be constructed using FRP pipe as the stub.

• Vanstone Flanges- All flanges are manufactured as per figure 3. Flanges larger than 24" dia. may be constructed using FRP pipe as the stub. Back up rings are ductile iron hot dip galvanized.

• Elbows- Are manufactured using the hand lay-up method and are to the dimensions shown in figures 4 & 5. Note: short radius elbows are also available upon request. The structural wall of a long radius elbow is 25% thicker and 50% thicker for a short radius elbow than the wall of a hand-lay-up pipe. Taper butt ends 10:1

• Tees And Laterals- Are manufactured using the hand-lay-up method and are to the dimensions shown in figures 4 & 5. The structural wall of a tee or lateral will be 50% thicker than the wall of a hand-lay-up pipe. Taper butt ends 10:1.

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