
Delve into the world of superior casting techniques with Changzhou Haojun Technology Co., Ltd. We specialize in Gravity Casting, Investment Casting, Lost Wax Casting, and Water Glass Casting, offering a versatile range of options to cater to your unique precision engineering needs.

Product Name | Customized CNC Machining Aluminum Die Casting Zinc Brass Alloy Impeller Shell,Custom Brass CNC Machining Die Casting Aluminum Shell |
Main Blank Process | Die Casting, Permanent Molding /Gravity Casting, Low Pressure Casting, High Pressure Casting etc. |
Material | Carbon Steel, Stainless Steel, Aluminum Alloy ,Brass Alloy ,Zamak 3, Zamak 5, Zamak 7, Zamak 2, Or according to customer requirements |
Casting Blank Size | 2 mm-1500mm / 0.08inch-60inch , or according to customer requirements |
Surface Finish | Zinc/Chrome Plating, Anodizing,Powder Coating,Electrophoretic painting etc. |
Machining Process | CNC Machining/ Lathing/ Milling/ Turning/ Boring/ Drilling/ Tapping/ Broaching/Reaming /Grinding/Honing and etc. |
Machining Tolerance | From 0.005mm-0.01mm-0.1mm |
Machined Surface Roughness | Ra 0.8-Ra3.2 according to customer requirement |
Application | Many industries, especially in household appliances,electrical heated tube element,switch accessories,auto spare parts,thermostat accessories,medical equipment hardware fittings. |
Lead time | 45 days for mold and samples, after confirmation of samples, mass production time is 35 days |
Small Quantity | Is acceptable |
Tolerance | CT4-6 for Permanent Molding, Die Casting |
Quality Control | Full Inspection |



* CNC turning/lathing service; Precision turning for intricate designs.
* CNC prototyping service; Rapid prototyping for accelerated innovation.
* Plastic/Metal 3D printing service; Bringing your concepts to life with exceptional detail.
* Plastic mold design & making service; Bespoke mold solutions for diverse needs.
* Plastic injection molding service; Superior molding for impeccable products.
* Casting service; Expertise in casting for intricate and robust outcomes.
Surface Finish | Material Avaiable |
Machined | All metals |
Smooth | All metals+Plastic (e.g aluminum, steel,nylon, ABS) |
Powder Coating | All metals ( e.g aluminum, steel) |
Brushing | All metals ( e.g aluminum, steel) |
Anodized Hardcoating | Aluminum and Titanium alloys |
Electropolishing | Metal+plastic (e.g aluminum, ABS) |
Bead Blasting | Aluminum and Titanium alloys |
Anodized Clear or Color | Aluminum and Titanium alloys |
Chrome /Zinc/Nickel Plating | Steel and Brass |





2) Detailed assessment prior to production: Prior to manufacturing, detailed checks are conducted to ensure every aspect of the design is meticulously adhered to.
3) Full and periodic inspections during mass production: Our comprehensive inspections during mass production ensure consistent quality across all products.
4) Evaluation of finished goods: Before the final seal of approval, each finished product undergoes a thorough evaluation to confirm its excellence.
5) Pre-shipment inspection: A final inspection before shipment guarantees that only top-quality products reach our valued customers.


2) Expertise in OEM & ODM parts, ensuring tailor-made solutions that meet and exceed your specific requirements.
3) Dedicated after-sales service, providing peace of mind and continued support long after delivery.
4) Equipped with advanced machine tools and cutting-edge CAD/CAM programming software for precision and efficiency.
5) State-of-the-art prototype machining capabilities to bring your concepts to life with impeccable accuracy.
6) Rigorous quality control standards upheld by our highly qualified inspection department, guaranteeing excellence in every component.
7) Commitment to innovation by continually upgrading and advancing our equipment to maintain competitive edge.
8) Ideally suited for low to mid-sized production volumes, offering flexibility and precision without compromise.
A: Send us an inquiry e-mail, we will contact you as we receive your mail.
Q2: How long can I get the sample?
A: Depends on your specific items, within 15 days is required generally.
Q3: What's kinds of information you need for a quote?
A: Kindly please provide the product drawing in PDF or .IGS or .STEP.
Q4: what's the payment terms?
A: We accept 30% as payment deposit and balance paid before shipment.
Q5. Are you a trading company or factory?
A: We are a direct factory with experienced engineers and employees .
Q6. What shall we do if we do not have drawings?
A. Please send your sample to our factory, then we can copy or provide you better solutions. Please send us pictures or drafts
with dimensions (Length, Height, Width), CAD or 3D file will be made for you if placed order.
Q7. Can we get some samples before mass production?
A: Absolutely
Q8. Will my drawings be safe after sending to you?
A: Yes, we will keep them well and not release to the third party without your permission.
Q9: Is it possible to know how are my products going on without visiting your company?
A: We will offer a detailed production schedule and send weekly reports with pictures or videos which show the machining progress.








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