
Haijin provides stainless steel silica sol precision casting, casting blanks, CNC machining, and small-batch prototyping services to the domestic machinery and equipment, pump and valve, building hardware, and ship parts industries. We support evaluation of 2D drawings, 3D models, samples, and bulk orders.
It caters to domestic industrial procurement and supports the evaluation of 2D drawings, 3D models, and samples; it can seamlessly transition from small-batch trial production to mass production.
For domestic procurement of machinery and equipment, water pumps and valves, building hardware and non-standard metal parts, we evaluate processes and quotations based on structure, material, precision, quantity, delivery time and surface treatment requirements.

Suitable for complex three-dimensional structures, stainless steel and alloy steel parts, taking into account surface quality, dimensional stability and batch consistency.
Understanding Precision Casting
We offer turning, milling, drilling, tapping, and machining of mating surfaces and critical dimensions, suitable for post-machining of castings and custom manufacturing based on provided drawings.
Check processing capacity
It covers door control, bathroom and building metal parts, and supports structural optimization, pre-processing before surface treatment and batch delivery.
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From drawing evaluation, mold making and sampling, shell casting to sandblasting and shaping, CNC machining and inspection and packaging, key links are followed up in the same quality chain, reducing the cost of outsourcing and communication.
First, confirm the material, structure, dimensional accuracy, quantity, and delivery date, and then determine the casting, machining, inspection, and delivery plan.
Receive 2D drawings, 3D models, samples, and quantity information.
Analyze the structure, materials, machining allowances, and quality risks.
Determine the mold design and complete the first piece and dimensional verification.
Waxing, shell making, melting, casting and post-treatment.
Complete the holes, threads, mating surfaces, and critical dimensions.
Inspect, package, and arrange bulk shipments as required.
Material selection, process differences, tolerances, and surface treatment directly affect pricing, delivery time, assembly risks, and subsequent service life.
Submit your material, quantity, size requirements, and drawings. We will then provide a more suitable production path and quotation suggestions, taking into account casting, machining, inspection, and delivery requirements.
Enter the material, product name, or processing technology, such as "316L impeller" or "silica sol casting".