color zinc plated Steel threaded coupling with special-shaped.
Description
Threaded couplings refer to pipe connections with threads, which
are the most common type of pipe fittings in industry and life.
The meaning of threaded coupling is: threaded joints make the
connection of the pipeline easier, and it is easier to disassemble
and replace, which greatly saves the cost of pipeline connection.
Color Zinc plated
Using chemical or electrochemical methods, a colored film or
interference film is produced on the metal surface. The film is
very thin, and sometimes the interference film itself has almost no
color. When the surface of the metal and the film reflect light,
the light waves cancel each other out. , Forming a variety of
different colors, when the thickness of the film gradually
decreases, the color tone changes, generally from yellow, red, blue
to green, until the color of the film itself is displayed. If the
thickness of the film is not uniform, it will produce rainbow
Variegated or variegated.
There is also a dyeing process to make the metal surface color. It
is mainly through a large number of micropores on the metal surface
or strong adsorption and chemical reaction on the metal surface to
uniformly dye the inorganic or organic dyes in the dyeing solution
to the metal surface. Sometimes electrolysis can be used to
co-deposit metal ions and dyes to produce colors.
After the passivation of the zinc coating, the passivation film or
white passivation film of different colors is usually obtained
depending on the passivation solution used. The corrosion
resistance of the rainbow-colored passivation film is more than
five times higher than that of the colorless passivation film. This
is because the rainbow-colored passivation film is thicker than the
white passivation film; on the other hand, when the surface of the
rainbow-colored passivation film is scratched, in humid air, the
hexavalent chromium in the passivation film near the scratched part
will be rubbed. The injured part undergoes a "re-passivation"
effect to repair the damage and restore the integrity of the
passivation film.
| CNC Machining | Description |
| Product name | Steel color-plated zinc assembly threaded coupling with
special-shaped |
| Material | Steel |
| Surface Finish | Color zinc plated |
| Head type | Round |
| Shape | Equal |
| Service | Customized OEM/ODM |
| Certificate | ISO9001 |
| Size | Can be customized |
| Test equipment | Measurement instrument, projector, CMM, Altimeter, Micrometer,
Thread Gages, Calipers, Pin guage etc. |
| Drawing Format | 3D/CAD/Dwg/IGS/STP |
| Pressure | 150LB |
Factory Pictures
Heat Treatment
Plating Line
Package
Test Equipment
Go no Go guage
Q1:What is the sample policy?
A:Glad to tell you that we can provide free sample for customers to
test quality. We will ship samples by express. For shipping charge,
could you please kindly afford it in advance, when you place the
larger order to us, we will return the shipping charge to you.
Q2.:What is the normal lead time?
A:Generally speaking, production time is 15-35 days.
Q3.:How about the quality of the products?
A:Quality control is strictly required before delivery, you will
get our products with our test report.
Besides, we have joined the Trade Assurance on Alibaba to protect
your payment to make sure that we deliver on time and manufacture
quality products as required.
