Manufacture and Fabrication

We supply’s with FRP products such as pipe, tanks, stacks, scrubbers, fittings, flange, Cooling tower part and custom molded components. Our products are durable, lightweight, corrosion and abrasion resistant and offer protection against harsh chemicals and industrial environments.

 

Our FRP filament wound and contact molded product lines are designed to meet or exceed various pressure ratings and industry accepted standards including:

  • ASTM D2996
  • ASTM D6041
  • ASTM D3299
  • ASTM D3982
  • ASTM D5685
  • ASTM D4097
  • ASTM D5421
  • ASME RTP-1

 

Method of construction

Hand Lay-Up Method

We use the hand lay-up method to produce products in all shapes and sizes. Catalyzed resin, chopped strand mat, and woven roving are applied to the surface of a mold. The FRP composite is compressed to the mold surface with a steel roller. Consecutive layers are applied to the surface of the mold in the same manner until the desired thickness is achieved. The finished product is left to cure and then removed from the mold.

Filament Winding Method

A resin rich corrosion barrier is applied to a mandrel and allowed to cure. Winding glass is then pulled through a saturation vat of catalyzed resin through guides and wrapped around a rotating mandrel in a helical pattern at a specified angle. Filament winding is an excellent process method for fabricating round equipment such as tanks, pipes, and duct.

Dual Laminate Fabrication

Dual laminates are hybrid process equipment and components made with a specialized thermoplastic interior liner (PVC, CPVC, and Polypropylene) and combined with a FRP exterior structure.

Pultrusion

Pultrusion is a continuous process for the manufacture of products having a constant cross section, such as rod stock, structural shapes, beams, channels, pipe, tubing. Pultrusion produces profiles with extremely high fibre loading, thus pultruded products have high structural properties.

Continuous strand fibreglass roving, mat, cloth, or surfacing veil is impregnated in a resin bath, then pulled (pul-trusion) through a steel die, by a powerful tractor mechanism. The steel die consolidates the saturated reinforcement, sets the shape of the stock, and controls the fibre/resin ratio. The die is heated to rapidly cure the resin. Many creels (balls) of roving are positioned on a rack, and a complex series of tensioning devices and roving guides direct the roving into the die.

Moulds

Hardened steel dies are machined and include a preform area to do the initial shaping of the resin-saturated roving. The dies include heating which can be electric or hot oil. The latest pultrusion technology uses direct injection dies, in which the resin is introduced inside the die, rather than through an external resin bath.

Major Advantages

The process is a continuous operation that can be readily automated. It is adaptable to both simple and complex cross-sectional shapes. Very high strengths are possible due to the fibre loading.