Fiber-Reinforced Polymer (FRP) Anchor Bolts

FRP anchor bolts are high-strength bolts made of fiber-reinforced polymer, used to anchor structural elements to concrete with corrosion resistance and light weight steel bolts can’t match.

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FRP anchor bolts are high-strength bolts made of fiber-reinforced polymer (FRP) material, used to anchor structural elements to concrete. They offer several advantages over traditional steel bolts, including:

Resistance to corrosion, chemicals, acids, and oils
Non-conductive, lightweight construction
High tensile and shear strength
Simple installation and easy customization

FRP anchor bolts suit a variety of applications, including:

Reinforcing existing concrete structures using FRP plates or wraps
Tying new concrete elements into existing ones
Securing equipment or machinery to concrete foundations
Repairing cracks or damage in concrete

FRP Anchor Bolt Types

FRP anchor bolts come in two main types: field-laminated and pre-fabricated.

Field-Laminated FRP Anchor Bolts

Field-laminated FRP anchor bolts are formed by wrapping FRP fabric around a steel core and curing it with resin on site. They can be shaped to fit any hole size, carrying load into the concrete to boost bond strength or through the concrete to transfer load for greater capacity. They come in carbon and E-glass fiber, with diameters from 1/4″ (6.4 mm) to 1 1/2″ (38.1 mm) and custom lengths.

Pre-Fabricated FRP Anchor Bolts

Pre-fabricated FRP anchor bolts are factory-molded by forming FRP material around a steel core. They feature a standard hex head and a flange that spreads pressure at the bolt-surface contact point, removing the need for a separate washer, and they resist chemicals and oil while staying non-conductive and lightweight. Diameters range from 1/4″ (6.4 mm) to 3/4″ (19.1 mm), with lengths from 1/2″ (12.7 mm) to 5″ (127 mm).

FRP Anchor Bolt Performance and Parameters

Performance and parameters for FRP anchor bolts depend on bolt type, material, diameter, length, spacing, and installation method. General guidelines include:

Tensile strength typically exceeds shear strength
Bond strength depends on the concrete’s surface roughness, moisture content, and cleanliness
Load capacity depends on embedment depth, edge distance, and bolt spacing
Proper installation requires correct drilling, cleaning, alignment, tightening, and curing

The table below gives example performance and parameter values from experimental studies:

Type	Material	Diameter	Length	Spacing	Load Capacity
Field-laminated	Carbon fiber	12.7 mm	300 mm	100 mm x 38 mm	206 kN
Pre-fabricated	Glass fiber	15.9 mm	76.2 mm	50.8 mm x 50.8 mm	44 kN

Technical Summary & Engineering Insights

Executive Summary: Haikuo FRP Anchor Bolts are high-strength fiber-reinforced polymer fasteners engineered to anchor structural elements to concrete without the corrosion, conductivity, or weight penalties of steel bolts — ideal for chemical, marine, and electrical-sensitive installations.

Performance Factor	Haikuo FRP Anchor Bolts	Steel Anchor Bolts	Stainless Steel Bolts
Corrosion / Chemical Resistance	Immune to acids, chemicals, salt	Rusts, degrades under chemical exposure	Better than steel, still can pit/corrode
Electrical Conductivity	Non-conductive	Conductive	Conductive
Weight	Lightweight	Heavy	Heavy
Cost (upfront)	Moderate	Low	High
Long-Term Cost in Corrosive Sites	Low — no replacement needed	High — frequent replacement	Moderate

Targeted Product FAQ

Q1: What applications are FRP anchor bolts best suited for?

A1: They’re commonly used for strengthening existing concrete with FRP plates/wraps, connecting new concrete elements, and anchoring equipment in chemical plants, water treatment facilities, and other corrosive or electrically-sensitive environments.

Q2: What sizes and lengths are available?

A2: Diameter and length are customizable to your anchoring specification — see the Customized Service options above or send us your drawing for a quote.

Q3: Are FRP anchor bolts as strong as steel bolts?

A3: FRP anchor bolts offer high tensile and shear strength suitable for most structural anchoring applications, though exact load ratings depend on diameter and installation method — share your load requirements and we’ll confirm suitability.

Q4: Can they be used alongside epoxy or chemical anchoring systems?

A4: Yes, FRP anchor bolts are commonly installed with structural epoxy adhesive systems, the same way steel anchors are — consult your installation adhesive’s compatibility guidance.

Q5: Do you supply matching nuts and washers?

A5: We can advise on compatible fastening hardware for your installation — let us know your specific anchoring system and we’ll confirm what’s needed.