Corrosion Resistant Parallel Thread Epoxy Rebar Coupler For Civil Engineering

Different from upset forged types, this parallel thread epoxy rebar coupler forms threads by direct cold rolling without rebar upset thickening. Cold rolling processing retains complete steel fiber structure without internal metal damage, and outer epoxy paint prevents oxidation and rust in rainy and humid inland construction sites. It becomes mainstream standard connection fitting for global conventional reinforced concrete engineering.

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

Material: 45C/40CR

Standard: BS4449, ISO15835,ACI318

Coating thickness: ≥250μm

Manufacturing Process: Cold rolling thread + surface epoxy spraying

Material: Medium carbon structural steel

HS CODE:731819

Storage Requirement: Store in dry and ventilated space, avoid sharp impact on coating

 ▎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 scoupler. 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 simplified production process effectively controls overall cost, making it highly competitive for large-batch procurement of regular projects. The cold-rolled thread has good ductility and will not crack under repeated building loads. The smooth full-surface epoxy layer eliminates exposed metal areas and reduces after-sales corrosion problems. Its compact size saves storage space and lowers international logistics costs for overseas buyers.

 ▎Application & Installation Position

• Coastal and cross-sea projects (most commonly used). Cross-sea bridges, coastal piers, breakwaters. The sea breeze and the high chloride ion content in seawater cause ordinary steel bars to rust very easily.

• Engineering in Saline-Alkaline and Salt Lake Areas. Bridges, roads, and factory foundations in saline-alkali regions. High soil salt content, severe corrosion

• Ports, wharves and docks. Have been subject to long-term erosion by seawater and salt spray

• Major projects with high durability requirements. High-speed railways, subways, tunnels, large bridges. Structures with a design service life of 100 years

• Underwater Structures

• Mainly applied to inland high-rise residential buildings, municipal road bridges, urban comprehensive pipe galleries, inland reservoirs and factory workshops. It fits common humid but non-saline construction environments perfectly.

  ▎Strict Manufacturing Inspection Flow

    Raw steel tubes get hardness testing before cutting. Fixed processing fixtures guarantee uniform thread dimension after cold rolling. Complete surface degreasing and dust removal are required before epoxy spraying. 3% of finished products are randomly selected for tensile testing to meet international civil engineering acceptance requirements.

   ▎FAQ

  1. What is the main difference between straight thread and upset forged epoxy coupler?

     Straight thread type is cost-effective for ordinary civil works, while upset forged type is for heavy-load and high-corrosion coastal projects.

  2. Can we repair scratched epoxy coating on site?

     We provide matching repair paint for minor coating damage during construction.

  3. What is the minimum order quantity for customized specifications?

     The minimum order for customized sizes is one full export carton.

      ▎TKD Description

  Economical parallel thread epoxy rebar coupler with reliable anti-rust performance, ideal for inland municipal engineering, residential buildings and conventional reinforced concrete structures.