Model: PD-0770.
Type: Parallel Clevis.
Nominal Breaking Load: 70 kN.
Material: Hot-dip galvanized steel, stainless steel closing pin.
Weight: Approximately 0.4 kg.
Plate Width: 7 mm.
Connection Aperture: 12 mm (accepts M12 bolts).
Dimensions: 70 mm (length) × 7 mm (width) × 7 mm (thickness).
Applications: Parallel connection of insulator strings in 10 kV distribution lines, securing cable terminals to frames, and connecting substation equipment.
What are the subjective factors that affect the corrosion resistance of the PD-0770 Clevis?
Raw materials
Q235B carbon steel is inherently corrosion-resistant, so surface treatment is required. If cold work hardening or localized stress concentration occurs during the stamping and forging process, the electrode potential may be reduced, leading to localized corrosion.
Corrosive media
Chloride ions in coastal air penetrate the oxide film on the zinc surface, reacting with the zinc and accelerating its depletion. Sulfur dioxide and nitrogen oxides in industrial areas combine with acidic gases to form acid rain, reducing the protective effect.
Humidity
A humid environment keeps the surface of the cladding moist for extended periods, accelerating corrosion of the zinc layer and the substrate.
When it comes to surface treatments for PD-0770 Clevis, galvanizing is the first choice. Besides galvanizing, what other surface treatments are there?
Passivation treatment
Forms a passive film on the surface of the cladding, improving its corrosion resistance and coating adhesion.
Phosphating treatment
Phosphating films can prevent metal corrosion to a certain extent and can also be used as a primer before painting to improve paint adhesion and corrosion resistance.
Oxidation treatment
The raw materials are placed in an oxidizing solution to form a 0.5μm-1.5μm Fe₃O₄ film on the surface, which eliminates residual stress and reduces deformation.
The PD-0770 Clevis is primarily used for connecting single panels or single panels to double panels. "P" stands for parallel bracket, "D" for single panel, and "07" designates a breaking load of 70kN. When used in conjunction with other hardware, it not only meets the connection requirements of various power lines, but also meets the requirements of high voltage levels, especially those above 110kV.
The PD-0770 Clevis is primarily used for connecting single panels or single panels to double panels. "P" stands for parallel bracket, "D" for single panel, and "07" designates a breaking load of 70kN. When used in conjunction with other hardware, it not only meets the connection requirements of various power lines, but also meets the requirements of high voltage levels, especially those above 110kV. If used in a highly corrosive environment, the PD-0770 Clevis surface should be cleaned or coated with anti-rust paint every 2-3 years to prevent the intrusion of corrosive media, extend its service life, and ensure the safe operation of the power line.
The PD-0770 Clevis is very easy to install. Align the two connection holes of the cladding with the connection holes of the adjacent hardware to ensure that the cladding and hardware are aligned and avoid misalignment after installation. Insert high-strength bolts with the bolt heads facing away from the direction of force, leaving two to three threads of the nut exposed. Use a torque wrench to tighten in two steps to the designated torque to avoid deformation caused by overtightening in a single step. After installation, the PD-0770 Clevis must be inspected for performance and only put into use after passing the inspection.
Hot Tags: pd-0770 clevis, China pd-0770 clevis manufacturers, suppliers, factory, PD 16 type Clevis, PD Clevis, PD type Clevis, Ub 10 type Clevis, UB 12 type Clevis, Z 16100 Clevis
