Equal‑leg and unequal‑leg options for different loading conditions. Equal‑leg angles give balanced stiffness in both directions—ideal for corner connections and symmetrical brackets. Unequal‑leg angles put more material along the primary load axis, useful for shelf supports and cantilever brackets where one direction dominates. Standard leg sizes typically range from 25 mm to 100 mm, covering most light‑to‑medium structural support needs without requiring a custom profile.
Hot work eliminated from the installation sequence. On a live plant floor—above a chemical dosing tank, inside a wastewater channel gallery, or alongside operating cable trays—a hot work permit for welding or grinding adds hours of paperwork and safety precautions. FRP angle cuts with a standard circular saw or hacksaw, drills with ordinary bits, and bolts into place. The profile commonly arrives on site, gets cut to length, and goes up within the same shift.
Non‑conductive where electrical isolation matters. In substation equipment frames, cable tray support brackets, and transformer platform stiffeners, the angle's non‑conductive property is often a requirement. Steel angle needs insulating gaskets and isolation washers to prevent stray current paths; FRP angle generally provides that isolation inherently, with no additional components to specify or maintain.
Corrosion resistance that outlasts galvanised steel. A galvanised steel angle in a coastal water treatment plant or chemical storage area might give three to five years before section loss becomes measurable. FRP angles in vinyl ester resin have been in similar service for extended periods with no measurable degradation. When the angle is buried inside a pipe rack or tank stiffener detail where inspection access is poor, that longevity is a significant advantage. Corrosion resistance is commonly verified under ASTM D543.
Typical applications replacing steel angle sections include equipment support brackets and shelf angles, tank and vessel stiffener rings, cable tray and ladder rack support brackets, edge protection angles on platforms and walkways, and secondary framing and bracing in corrosive atmospheres. Each trades the maintenance cycle of coated steel for a profile that goes in once and stays. For related corrosion‑resistant framing and support strategies, see FRP Corrosion Prevention Solutions and FRP Structural Support Applications.
Standard wall thickness is typically uniform at 3 mm to 6 mm along both legs and the entire length. Length is generally up to 6 m, with longer lengths and custom cut lengths available on request. Flexural modulus commonly ranges between 18–28 GPa, depending on fibre architecture and resin system. Resin options include isophthalic polyester as standard, with vinyl ester available for aggressive chemical or marine environments. Maximum continuous service temperature is typically 80 °C for polyester and 100 °C for vinyl ester, with short‑term excursions acceptable. The profile is non‑conductive, suitable for use near energised equipment. Weight ranges from approximately 0.5–4 kg/m, depending on size—about one‑quarter of an equivalent steel angle. Surface finish is smooth as standard, with UV veil or custom colour available on request. The high fibre‑volume fraction of unidirectional pultruded FRP composites typically provides the longitudinal strength and stiffness required for long‑span support brackets in corrosive atmospheres.
Standard Dimensional Parameters
Commonly available sectional dimensions and standard stock lengths for pultruded FRP angles are listed below for reference. Custom cross‑sections, cut‑length orders, and project‑specific tolerances are available on request.
| Parameter | Commonly Available Specification |
|---|---|
| Angle — Small (Equal Leg, L × t) | 25×3 mm, 25×5 mm, 30×3 mm, 30×5 mm, 40×5 mm |
| Angle — Medium (Equal Leg, L × t) | 50×5 mm, 50×6 mm, 50×8 mm, 60×6 mm, 60×10 mm, 75×6 mm, 75×8 mm |
| Angle — Large (Equal Leg, L × t) | 80×10 mm, 100×10 mm, 100×12 mm, 120×12 mm, 150×15 mm |
| Unequal Leg Options | 75×50×6 mm, 100×75×10 mm (custom available) |
| Standard Stock Length | 3 m, 6 m |
Additional leg lengths (up to 150 mm) and wall thicknesses are available for custom orders. For section modulus data, load tables, and structural design parameters, see the referenced flexural modulus and ASTM performance figures above.
Proven in Field
"The steel shelf brackets supporting our chlorine contact tank walkway had corroded to half their original thickness. We replaced the entire set with FRP equal‑leg angles in three shifts—cut, drilled, and bolted on site with no welding permits required. That was over five years ago, and the new brackets show no visible degradation."
— Maintenance Engineer, Municipal Water Treatment Plant
Request Angle Specifications & Section Properties
WayTong supplies pultruded FRP angles in standard equal‑leg and unequal‑leg sizes with custom lengths, resin formulations, and surface finishes. Contact our technical desk for section modulus data, load tables, and project‑specific substitution support.
Request Product InformationFRP angles are part of the WayTong FRP Structural Profiles range, which also includes I‑beams, square tubes, round tubes, channels, solid rods, and flat bars. For complete mechanical and corrosion performance data, see the ASTM Standards Summary.