Acid copper plating Anti-galling coating
Copper coating on parts, couplings and threads for the oil and gas industry.
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Soft, by design.
Copper plating is a copper coating deposited onto a part using electric current. At Dro Pur, we apply it to coupling threads and related parts for the oil and gas industry.
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By electrodeposition
As in chrome plating, the electric current causes copper dissolved in the solution to deposit on the part.
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Softer than steel
Copper is a soft metal: when two threads are tightened together, it deforms before the steel beneath it.
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Functional purpose
Like phosphating, it is applied for its performance on the thread, not its appearance.
How it is applied, step by step.
Copper needs a clean, active surface to adhere firmly to the thread.
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01
Cleaning
Degreasing and rinsing: the thread must be free of oils and dirt.
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02
Activation
Acid pickling removes oxides and prepares the steel to receive the copper.
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03
Copper plating
Electric current deposits copper from the solution onto the thread as a continuous layer.
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04
Protection
Rinsing, drying and, where applicable, a treatment to prevent the copper from darkening.
What we bring to the part.
Copper plating reduces the thread's risk of galling during make-up: the copper acts as a solid lubricant between the surfaces and protects the steel thread profiles during assembly.
Performance depends on surface preparation, copper thickness and the thread compound used.
View Quality and environmentWhere we apply it
Explore the industries-
Couplings
Copper-plated threads on connections for the oil and gas industry.
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Threaded parts
Threads and related parts, according to each part's requirements.
Other uses of the treatment
- Base layer for nickel and chrome plating
- Parts requiring electrical conductivity
- Selective protection in heat treatments
- Decorative copper finishes
Processing at Dro Pur is subject to an assessment of each part's material, geometry and requirements.
Other processes
Let's assess the treatment
for your part.
Tell us which component you need copper-plated and what requirements it must meet. You can attach a drawing, a photo or a specification.