Fiberglass Cross and Tee

I. Types and Specifications

1. Fiberglass Tees

This is the most common type and is primarily categorized as follows:

Equal Diameter Tees

The main and branch pipes have identical diameters.

Applications: Where fluid needs to be evenly distributed or branches with equal flow rates are required.

Reducing Diameter Tees

The branch pipe has a smaller diameter than the main pipe.

Applications: Where a branch pipe with a smaller flow rate is required to be diverted from the main pipe.

Angled Tees

The branch pipe connects to the main pipe at an acute angle (usually 45°) rather than a right angle.

Applications: This design significantly reduces fluid resistance, turbulence, and erosion. Angled Tees are particularly preferred when conveying slurries containing solid particles.

2. Fiberglass Crosses

Equal Diameter Crosses: All four ports have identical diameters.

Reducing Diameter Crosses: One or more ports have a different diameter than the others. Angled Cross: Branches are connected with a beveled design.

Application: Used in more complex pipe network layouts requiring simultaneous bidirectional flow diversion or merging.

II. Fiberglass tees and crosses are the "crossroads" of the piping system and are core components for complex fluid distribution. Their technical key lies in:

Scientific opening reinforcement design to address stress concentration.

Optimized fluid dynamics profiles (such as the use of angled tees) to reduce energy consumption and wear.

Reliable manufacturing processes (winding is superior to hand lay-up) to ensure structural integrity.

Proper installation and support to balance internal stresses.

When selecting and using them, they must be considered as pressure-bearing structures and fluid units, not just simple connectors, to ensure efficient, safe, and long-term operation of the entire piping network.

Chemical Process Piping

FRP Tee fittings can create branch connections in pipelines handling compatible acids, alkalis, salt solutions, and other chemical process liquids.

The internal corrosion-resistant liner can match the adjoining pipeline, while the reinforced branch intersection forms a continuous connection between the main line and process equipment, storage tanks, or other process units.

Water and Wastewater Piping

Industrial water, municipal water, and wastewater FRP pipelines can use tee fittings to connect tanks, pumps, treatment basins, and other process equipment.

Large-diameter main lines can use reducing tees to distribute flow into smaller process branches.

Multiple tees can also form distribution networks serving different stages of a treatment system.

Flue Gas Desulfurization and Environmental Piping

FRP Tee fittings can be used in compatible slurry, recirculation liquid, process-water, and other piping within wet flue gas desulfurization, scrubbing, and absorption systems.

For suitable solids-containing media, swept or lateral branches can provide a smoother transition through the intersection.

Local reinforcement around the branch root can also be configured according to the actual piping load and service conditions.

Seawater and Desalination Systems

FRP Tee fittings can be used for branch connections in seawater intake, pretreatment, desalination, and other compatible seawater piping systems.

Large main lines can connect directly to different branch sizes through reducing tees and can be supplied together with FRP straight pipes, elbows, flanges, and other fittings.

Metallurgical and Hydrometallurgical Piping

Acidic solutions, salt solutions, recirculation liquids, and compatible slurry pipelines in metallurgy, hydrometallurgy, and mineral processing can use FRP Tee fittings to connect different pieces of process equipment.

Branch reinforcement, swept configurations, and corrosion-resistant material systems can be coordinated with corrosive media and complex process-flow requirements.