Spring
New
GB
Customized
Metal
Metal Casting Machinery
Single Item
100%QC
OEM High Strength Electrical Equipment
15days
2.000kg
30X25X20.Cm
Accecpted
Haojun Spring
0.3
0.2
Jiangsu, China
Product Description



Products Details
Material | Carbon steel(SWC),Alloy steel SEA9260/9254/6150/SUP9/SUP10/SUP12,51CrV4,stainless steel,Music wire/piano wire(SWP);beryllium copper etc. |
Outer Diameter | 0.2~85mm |
Surface Finish | Zinc/Chrome Plating, Anodizing,Powder Coating,Electrophoretic painting etc. |
Process | Material purchased-Producting-First Testing-Coiling-Inspection-Heat Treatment-Cleaning-Surface Treatment-Final testing-Packing-Shipping |
Application | Industrial/auto/Motorcycle/electronics/electric power/Toys/Sports goods/Machinery equipment etc. |
Packing | Inner packing with plastic bags,and then carton boxes for outer packing,at last wooden or plastic pallets for request |
Small Quantity | Is acceptable |
Tolerance | As per drawing |
Quality Control | Full Inspection |
Product Feature
1. Exceptional material versatility, allowing for use in diverse applications and environments.
2. Extensive product range with rapid prototyping and swift delivery to meet urgent demands.
3. Expertly engineered custom springs, tailored precisely to your specifications and technical drawings.
4. Impeccable tolerance precision, adhering strictly to your exact requirements for seamless integration.
5. A wide array of surface finishes available, designed to satisfy even the most unique customer requirements and enhance product longevity.
6. Comprehensive inspection protocols ensure that every spring meets our stringent quality standards before reaching you.

1. Material Capability
Aluminum | Aluminum 5052 Aluminum 7075 Aluminum 7075-T6 Aluminum 6063-T5 Aluminum 7050-T7451 Aluminum MIC-6 Aluminum 6061-T6 Aluminum 2024-T3 |
Steel | Alloy Steel 4130 Alloy Steel 4140 ASTM A36 Stainless Steel 15-5 Stainless Steel 17-4 Stainless Steel 18-8 Stainless Steel 303 Stainless Steel 304 Stainless Steel 316/316L Stainless Steel 416 Stainless Steel 420 Steel 1018 Steel A36 |
Brass | Brass C360 Brass 260 |
Copper | EPT Copper C110 Copper 101 |
2. Customized Service
*Custom Springs
* 3/4/5 Axis CNC Milling and Machining Service
* CNC Turning and Lathing Service
* CNC Prototyping Service
* Plastic and Metal 3D Printing Service
* Plastic Mold Design and Manufacturing Service
* Plastic Injection Molding Service
* Casting Service
* CNC Turning and Lathing Service
* CNC Prototyping Service
* Plastic and Metal 3D Printing Service
* Plastic Mold Design and Manufacturing Service
* Plastic Injection Molding Service
* Casting Service
3. Surface Treatment
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 |
4. Spring Types

Various Custom Springs
We offer diverse styles for spring customization,
To customize, please kindly provide the following information:
♦ Spring Type
♦ Material
♦ Wire Diameter
♦ Surface Treatment
♦ Inner Diameter and Outer Diameter (ID and OD)
♦ Free Length and Working Length
♦ Total Coils and Active Coils
♦ Application
♦ Quantity
A detailed spring drawing is most advantageous.

To customize, please kindly provide the following information:
♦ Spring Type
♦ Material
♦ Wire Diameter
♦ Surface Treatment
♦ Inner Diameter and Outer Diameter (ID and OD)
♦ Free Length and Working Length
♦ Total Coils and Active Coils
♦ Application
♦ Quantity
A detailed spring drawing is most advantageous.



Nestled in the vibrant west of Shanghai, Changzhou Haojun Technology Co., Ltd. stands as a beacon of innovation, specializing in providing comprehensive, one-stop solutions for both metal and plastic products.
Our unwavering commitment is to turn our customers' visionary concepts and sophisticated designs into reality. We leverage our unparalleled engineering and manufacturing expertise to deliver excellence across various projects and processes, such as:
---Exquisite Casting and Precision Forging
---Advanced CNC Machining
---Expert Stamping and Sheet Metal Fabrication
---High-Quality Springs Production
---Innovative Plastic Injection Molding

1. CNC Machining and Springs Workshop

2. Quality Control
1) Rigorous inspection of raw materials upon arrival at our facility
2) Meticulous verification of every detail before commencing production
3) Comprehensive full and routing inspections throughout mass production
4) Thorough examination of finished products
5) Final inspection of goods prior to shipment to ensure quality and precision
2) Meticulous verification of every detail before commencing production
3) Comprehensive full and routing inspections throughout mass production
4) Thorough examination of finished products
5) Final inspection of goods prior to shipment to ensure quality and precision

Our products are meticulously packed with utmost care before shipment, ensuring they reach you in pristine condition with no risk of damage.
Additionally, we provide flexible packing solutions tailored to our customer's specific requirements, guaranteeing satisfaction and convenience.
---Utilizing durable Plastic or Bubble bags for added protection,
---Secured within compact Small cartons for efficient handling,
---For heavier items, we offer robust solutions with Pallet or Wooden box options to ensure stability and safety during transit.

1) We offer unparalleled design assistance along with comprehensive engineering support to ensure your needs are perfectly met.
2) We excel in producing customized OEM & ODM parts, tailored to your exact specifications.
3) Experience our dedicated after-sales service, providing continuous support and satisfaction.
4) Benefit from our advanced machine tools and cutting-edge CAD/CAM programming software, delivering precision and efficiency.
5) Our prototype machining capabilities allow us to bring your innovative ideas to life swiftly and accurately.
6) Adhering to strict quality control standards, our highly qualified inspection department ensures superior product quality at every stage.
7) Constantly enhancing and upgrading our equipment to maintain a competitive edge in the industry.
8) Ideally suited for low to mid-sized production volumes, ensuring efficiency and cost-effectiveness.
2) We excel in producing customized OEM & ODM parts, tailored to your exact specifications.
3) Experience our dedicated after-sales service, providing continuous support and satisfaction.
4) Benefit from our advanced machine tools and cutting-edge CAD/CAM programming software, delivering precision and efficiency.
5) Our prototype machining capabilities allow us to bring your innovative ideas to life swiftly and accurately.
6) Adhering to strict quality control standards, our highly qualified inspection department ensures superior product quality at every stage.
7) Constantly enhancing and upgrading our equipment to maintain a competitive edge in the industry.
8) Ideally suited for low to mid-sized production volumes, ensuring efficiency and cost-effectiveness.
Q1: Where can I get product & price information?
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.
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.