Faucet manufacturing process: From brass bars into faucets

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(Last Updated On: July 24, 2023)

At Spark Faucet Factory, we take immense pride in our faucet manufacturing process, which blends innovation, precision, and expertise to create faucets of unparalleled quality and design. Our commitment to excellence extends from the selection of top-notch materials to the incorporation of advanced techniques, resulting in faucets that stand the test of time.


The level of quality is controlled at every stage. Quality is our weapon to win the market. We will always produce high-quality faucets & bathroom accessories. In this comprehensive guide, we unveil the intricate details of our faucet manufacturing process that set us apart from the competition.

Faucet design and mold making

Design is at the heart of our faucet manufacturing process. Our team of skilled designers and engineers collaborates to create innovative faucet designs that blend aesthetics with functionality seamlessly.

Faucet design and mold making

Solid Core Making

A solid core is made from fine sand and a hardening agent by heating in a core box machine. The core is a central part of the production process, as it forms water channels in the faucet body during casting.  

Core box machine

Premium Raw Materials

The most important ingredient in faucet production is brass, from which the faucet body is made by means of casting. Spark faucets are used to make the faucet is generally H59 or lead-free copper. In addition to strong corrosion resistance, low melting point (easy to cast), and sterilization, brass is commonly used as a raw material in the market. Of course, there are faucets made of other materials, such as stainless steel and zinc alloy. Stainless steel is somewhat lead-free, but has a high melting point and is not easy to form. The shape of the cast faucet is relatively simple. The biggest feature of zinc alloy is its low price, but the cast faucet is harmful to health.

H59 Copper

Advanced Gravity Casting Process

The person responsible for casting places the cores inside the mold and removes any loose sand from the shell mold using compressed air. Molten brass flows into the shell molds. The solid core maintains waterways open inside the mold, Molten brass flows into the shell molds. The solid core maintains waterways open inside the mold 


CNC Machine

CNC machining machine tools such as turning, milling, drilling, planing, grinding and boring are used to perform various cutting operations on the workpiece to achieve the required dimensional accuracy and shape position accuracy and to meet the requirements of the drawings. 

CNC Machine

Brass faucet body molding

Faucet Body

Surface Treatment

After the casting is polished and polished, the surface treatment of the casting is processed. The surface treatment process mainly includes PVD (Physical Vapor Deposition), ORB (Oil Rubber Bronze), plating Plating, etc. The most widely used faucet is electroplating chromium. Electroplating can enhance the corrosion resistance of the faucet, increase the hardness, prevent wear and increase the appearance of the surface. 

Surface Treatment

Testing for Endurance and Reliability

Spray Test

The quality of the plating surface treatment can be judged by the 24-hour acetate spray test, and the coating thickness gauge can be used to identify the thickness of each metal coating. Generally speaking, the thickness of the coating is up to standard and the salt spray test can pass. Electroplating is a process of pollution and energy consumption. The general faucet production factory must hand the faucet to a professional electroplating factory for electroplating, which increases the production time and the difficulty of control.

Salt Spray Machine
Salt Spray Machine

100% Water Test

After the casting of the faucet is electroplated and passed the inspection, it can enter the assembly process. Assembly is the process of connecting processed faucet parts in a certain order and technology to become a complete faucet product and reliably realize the function of product design. Assembly is at the final stage necessary for the manufacture of the product, and the quality of the product (from product design, part manufacturing to product assembly) is finally guaranteed and tested by assembly.

Water Test Machine

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