Economical Parallel Thread Galvanized Rebar Coupler For General Civil Engineering

This parallel thread galvanized coupler omits upset forging process and forms thread by direct cold rolling on steel tube. Cold rolling retains the intrinsic metallic fiber of raw material to avoid inner structural damage. Surface galvanized layer isolates air and rainwater erosion, effectively preventing surface rust during outdoor storage and inland construction.

Size: from 12mm to 40mm.

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

Material: 45C/40CR

Standard: BS4449, ISO15835,ACI318

▍Advantage:

• Excellent anti‑corrosion and anti‑rust performance.

• High structural strength and stable connection performance.

• Good durability, suitable for indoor and general outdoor projects.

• Easy installation and compatible with standard construction.

• Cost‑effective and reliable for long‑term use.

▍Application & Installation Position

• Basement, underground garage, underground structure: Basement floor slab, wall panel, column, long-term damp area, easily damp area

• Outdoor open-air structures: Outdoor frame columns, beams, canopies, balconies, and parts directly exposed to rain and sun

• Waterfront and high-humidity environments: Pools, pump rooms, tunnels, pipe galleries and culverts around bathrooms and other areas with high moisture content.

• Projects with high aesthetic requirements: Municipal projects, resettlement housing, and high-end real estate projects where the client demands a clean and tidy appearance and resistance to rust.

▍Manufacturing Inspection Rules

Raw steel tubes go through hardness test before cutting and cold rolling. Fixed tooling ensures consistent thread dimension. Pre-degreasing is required prior to galvanizing to guarantee zinc layer adhesion. 3% finished goods are picked randomly for pull test to meet global civil engineering acceptance standards.

▍Logistics & Package

Small batch orders use export carton packing; bulk cargo is fixed on certified fumigated pallet for customs clearance. In-stock standard products ship within 3~5 working days, customized specifications confirm production cycle separately.

▍FAQ

Q1: What is galvanized rebar coupler?

A: It is rib peeling rolling thread coupler with full hot-dip galvanized coating for anti-corrosion, used for rebar connection in corrosive environments.

Q2: What galvanizing treatment do you adopt?

A: We use hot-dip galvanizing. Uniform zinc layer tightly covers inner and outer threads, avoiding rust in humid, salt-spray surroundings.

Q3: Does galvanization affect joint tensile strength?

A: No. The galvanized layer will not reduce connection strength, joints still meet equal-strength seismic standards like ISO 15835.

Q4: What thickness is the zinc coating?

A: Zinc coating thickness reaches 60–100μm, strong anti-rust performance for long-term outdoor service.