Heavy Duty Epoxy Coated Parallel Thread Rebar Coupler For Construction

This upset forged epoxy coated parallel thread rebar coupler is produced via rebar end upset thickening before thread cutting, differing from direct threading technology. Thickened rebar end expands thread bearing area effectively and prevents sliding fracture under large pulling force. The full epoxy coating isolates steel from water, brine and corrosive soil, solving rust failure issues of ordinary bare rebar couplers.

Size: from 12mm to 40mm.

Meet the requirements of steel bars: HRB500/B500B/SD600/ASTM 75

Material: 45C/40CR

Standard: BS4449, ISO15835,ACI318

Certificate: UK ,DCL,ISO9001

Working Temperature: -30℃ to 80℃

▎Production & Quality Control

All raw steel materials pass composition inspection before production. CNC hydraulic upset forging machines ensure consistent end forming; precise CNC lathe controls thread tolerance within ±0.02mm. Finished couplers go through automatic electrostatic spraying and high-temperature curing. Random pull-out sampling test is required before delivery to guarantee stable quality.

▎Advantages

• They have extremely strong anti-corrosion capabilities and a long service life. The surface is insulated, rust-proof, and resistant to chloride ion corrosion, making them many times more durable than ordinary coupler. They are suitable for coastal areas, saline-alkali land, and chemical environments.

• They do not damage the epoxy coating of the reinforcing bars. During connection, they specifically protect the original anti-corrosion layer of the reinforcing bars, without causing any damage or peeling off the coating, ensuring the overall anti-corrosion effect.

• They meet strength standards and satisfy the force requirements. The joint performance is the same as that of ordinary straight rolling threaded coupler, and they comply with the standards for tensile strength, seismic resistance, and anti-slip resistance.

• The integrated epoxy coating will not peel off easily, providing reliable anti-rust protection for decades.

• The standard parallel thread structure supports quick manual installation without professional welding equipment, helping construction teams shorten on-site working hours greatly.

▎Application & Installation Position

Widely used for cross-sea bridges, offshore platforms, coastal wharves, subway foundations, saline-alkali land buildings and chemical plant infrastructure. It is the preferred connecting part for all heavy-duty construction projects under strong corrosion.

▎FAQ

1.Can this epoxy coated coupler work in seawater immersion environment?

Yes, dense epoxy coating blocks seawater corrosion, perfectly fit long-term underwater rebar connection.

2.Is custom size available for special rebar diameter?

We support OEM customization for non-standard Φ10~Φ50mm rebar coupler size.

3.How long is the anti-rust service life of epoxy coating?

Under normal construction environment, the protective coating keeps intact over 30 years.

▎TKD Description

Upset forged epoxy coated rebar coupler with enhanced tensile strength and superior anti-corrosion performance, designed for heavy-load coastal, offshore and saline land construction projects.