Serving Europe · USA · Central Asia · Middle East · Japan · Korea
ISO 9001 Certified Manufacturer

Precision Metal Spinning & CNC Machining from China

Coolanna Technology delivers custom spun metal parts and precision-machined components to clients across Europe, the USA, Central Asia, the Middle East, Japan and Korea — with engineering support, strict quality control and one-stop sourcing under one roof.

15+Years of manufacturing experience
30+Countries served worldwide
24hQuotation response time
±0.02mmPrecision tolerance capability
Our Core Services

One Factory, One Partner — From Metal to Finished Assembly

Combine our in-house metal spinning and CNC machining capabilities with our China sourcing service to simplify your entire supply chain.

CNC metal spinning lathe forming an aluminum dome part

Metal Spinning

Custom spun parts in aluminum, stainless steel, copper and brass — domes, cones, tank heads, reflectors, fan housings. Low tooling cost, fast turnaround, diameters up to 1,500 mm.

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5-axis CNC milling machine cutting a precision metal part

CNC Machining

3/4/5-axis CNC milling and turning with tolerances down to ±0.02 mm. Prototypes and volume production for automotive, aerospace, medical and industrial equipment.

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Export packaging and sourcing service for metal parts

One-Stop Sourcing

Supplier auditing, price negotiation, quality inspection, export packaging and consolidated shipping — a reliable China sourcing partner with transparent fees.

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Coolanna Technology modern manufacturing workshop in Nanjing, China
12,000 m² manufacturing facility
Why Global Buyers Choose Coolanna

A Supplier You Can Rely On, Not Just a Price List

We built our reputation serving demanding OEM clients in Germany, the Netherlands, the USA, the UAE, Saudi Arabia, Japan and Korea. Here is what working with Coolanna feels like:

  • Engineering support from day one — our team reviews your drawings for manufacturability and suggests cost-down options before quoting.
  • 100% in-process & final inspection — CMM, calipers, surface roughness testers and full material certificates (EN 10204 3.1) on request.
  • Transparent communication — English-speaking project managers, video factory tours, and photo/video updates at every production stage.
  • Flexible trade terms — FOB Shanghai / Ningbo, CIF, EXW and DDP; sea, air and China-Europe railway freight options.
  • IP & NDA protection — signed confidentiality agreements and dedicated tooling kept exclusively for your orders.
Materials & Capabilities

Everything Needed for Your Project

Aluminum 1050–6061
Stainless 304 / 316
Carbon Steel
Copper & Brass
Titanium
Special Alloys

Spinning Ø up to 1,500 mm

Sheet thickness 0.5–8 mm, manual & CNC spinning.

5-Axis Machining

Complex geometries, tight tolerances ±0.02 mm.

Surface Finishing

Anodizing, plating, powder coating, polishing, passivation.

Full QC Documentation

Dimensional reports, material certs, PPAP on request.

What We Make

Precision Parts for Demanding Industries

Every part is produced to your drawings and inspected before packing. Typical applications include:

Assorted precision spun and CNC machined metal parts

Lighting Reflectors & Domes

High-reflectivity aluminum spun reflectors for industrial and architectural lighting.

Stainless steel spun tank heads

Tank Heads & Vessels

Spun stainless steel heads and pressure vessel components with certified materials.

CNC machined aluminum housings

CNC Machined Housings

Anodized aluminum housings and enclosures for electronics and automation equipment.

Brass CNC turned shafts and fittings

Turned Shafts & Fittings

Precision turned shafts, bushings and custom fittings in brass, steel and stainless.

How We Work

From Drawing to Delivery in 5 Steps

1

Send Drawings

Upload 2D/3D files (STEP, DWG, PDF) with your requirements.

2

Quote in 24h

Engineering review, material options and detailed pricing.

3

Sample Approval

First articles produced and approved before mass production.

4

Mass Production

In-process QC with photo/video updates at every milestone.

5

Shipping

Export packing, customs docs and door-to-door (DDP) options.

Client Feedback

Trusted by Buyers Worldwide

★★★★★

"Coolanna has spun our aluminum reflectors for three years. Consistent quality, on-time delivery every single month — they feel like our own factory in China."

Thomas B.Purchasing Manager · Lighting Manufacturer, Germany
★★★★★

"Their sourcing team saved us 18% on a full container of machined fittings and handled all the inspection and export paperwork. Genuinely hassle-free."

Ahmed K.Managing Director · Industrial Trading, UAE
★★★★★

"Drawings go in, perfect parts come out. Their English communication and inspection reports are the best we've experienced with any Chinese supplier."

Kenji S.R&D Engineer · Equipment Maker, Japan
FAQ

Frequently Asked Questions

What is metal spinning and which parts is it suitable for?
Metal spinning (spin forming) is a cold-forming process that shapes sheet metal discs over a rotating mandrel into axially symmetric parts — domes, cones, cylinders, tank heads, reflectors and housings. It offers excellent material strength with very low tooling cost compared to deep drawing, making it ideal for prototypes and production runs alike.
What is your minimum order quantity (MOQ)?
We support prototype development and low-volume production starting from 1 piece. There is no strict MOQ — we scale from samples to mass production as your project grows.
How fast can I get a quotation?
Send us your 2D/3D drawings (STEP, DWG, PDF) and our engineers will reply with a detailed quotation within 24 hours, including material options, tolerances and unit pricing at different volumes.
Do you ship internationally and handle customs?
Yes. We regularly export to Europe, the USA, Central Asia, the Middle East, Japan and Korea by sea, air and China-Europe railway. We offer FOB, CIF and DDP terms and prepare complete export documentation including certificates of origin.
Can you sign an NDA and protect my designs?
Absolutely. We sign NDAs before receiving drawings, and any tooling or fixtures built for your project are stored exclusively for your orders and never shared with third parties.

Ready to Start Your Project?

Send your drawings today — detailed quotation within 24 hours, no obligation.

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