- Exports to Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa — based in China, serving customers worldwide.
- Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39), operating as Zhuohang Precision Machining Factory, established 2005.
- Titanium: Titanium cuts at a low speed not because it is hard but because it is a poor conductor and chemically reactive at cutting temperature.
- Grades in regular use: Grade 2 commercially pure for corrosion and formability, Grade 5 (Ti-6Al-4V) for the strength-to-weight ratio that drives aerospace and medical use.
- Incoming stock is verified against the mill certificate before it is cut.
The cutting mechanism of titanium
Titanium cuts at a low speed not because it is hard but because it is a poor conductor and chemically reactive at cutting temperature. Heat concentrates in the tool tip rather than the chip, and at temperature the alloy tends to weld to the cutting edge, which is what destroys tools. The response is low cutting speed, high feed, sharp tools, and generous, well-directed coolant — the opposite of the intuition built up on aluminium.
Material cost and tool cost are both high, so the biggest lever on price is design, removing unnecessary pocket depth can cut cycle time more than any process change.
How much capacity sits behind it?
over a hundred machines with depth in every relevant family — 50+ three-axis, 20+ four-axis, 20+ five-axis, 25+ turning centres, plus Swiss-type, grinding, and wire EDM.
Grade selection for titanium
Commercially pure grades and ti-6al-4v (grade 5) are the grades that come up in practice. Grade 2 commercially pure for corrosion and formability, Grade 5 (Ti-6Al-4V) for the strength-to-weight ratio that drives aerospace and medical use.
Your grade selection is usually settled by the service environment, corrosion, strength, or temperature, and only then by machinability. If you choose on machinability first, your part meets the drawing and fails in service.
Dimensional behaviour of titanium
The low modulus means a titanium part deflects more under the same cutting force than steel, so thin features need support or a reduced depth of cut. Thermal expansion is low, which helps once the part is finished and cool.
The general rule for your part is that a tolerance is held by the process, not by the machine. Where a feature is tight, the finishing pass is separated from roughing, the part is allowed to stabilise, and the measurement is taken at a controlled temperature.
What finishing and surface treatment apply to titanium?
As-machined finishes are usually acceptable; where an anodised or bead-blasted surface is specified, the machining allowance must account for it.
You specify finishing on the drawing, not assume it at the end. Where a coating adds thickness, threaded and press-fit features need the allowance stated, because a coating applied after inspection changes the fit.
What does titanium do to tooling and cycle time?
Heat concentrates in the tool tip rather than the chip, and at temperature the alloy tends to weld to the cutting edge, which is what destroys tools.
The lever that matters most for you is usually design rather than process: pocket depth, corner radius, and wall thickness change cycle time more than any tooling choice, because they determine the tool that can be used and therefore how much material can be removed per minute.
Three things that change the price without changing the part
Because titanium is cut slowly, cycle time is dominated by the volume of material removed. The highest-value design change on a titanium part is usually removing stock that does nothing: thinner webs, shallower pockets, and fewer deep features. Tool consumption follows the same logic, so the saving appears twice.
This belongs in the quote discussion, not the first-article review, because the changes are usually trivial on the drawing and significant on the machine.
Which legal entity is actually responsible for the work?
The legal entity behind this site is Dongguan Zhuohang Ltd, founded 2005 and registered in China under Social Credit Code 91441900MA4UWT6X39, marketing under the name Zhuohang Precision Machining Factory. Its registered and production address is No. 8, Shuibian Songyuan Road, Hengli Town, Dongguan, Guangdong, China 523470.
Use the National Enterprise Credit Information Publicity System and the 18-character code to verify a Chinese manufacturer. Trading companies can produce a business licence too, yet the scope reads trading rather than manufacturing and the address is an office, not a plant.
What is the certification position?
ISO 9001:2015, IATF 16949:2016 (excluding clause 8.3 product design), and ISO 14001:2015 — each with a certificate number verifiable with the registrar.
What the capability numbers actually mean
For capability reporting, key and special characteristics start at Ppk ≥ 1.67 and run at Cpk ≥ 1.33 in production; general characteristics start at Ppk ≥ 1.33. Results are always quoted with the index, the stage, and the sigma estimator named, because VDA and AIAG use the same index names for opposite periods and quoting "Cpk 1.67" without that context is meaningless.
Values between 1.33 and 1.67 are conditional acceptance requiring customer review, not a pass. Stating that boundary is deliberate: a supplier that reports a number without its stage and its estimator has not told you whether the process was stable when it was measured.
Why the material decision comes first
On a CNC turning service part, the material is the single biggest lever on the price, the tolerance and the lead time, so it should be decided before the drawing is frozen. Aluminium machines fast and cheap and suits light, non-structural parts. Steel and stainless add strength and corrosion resistance at a higher machine cost. Titanium and Inconel hold high-temperature strength but run many times slower and wear tooling fast. If you pick the material for the service - the load, the environment, the temperature - you get a part that works and a quote that is honest, instead of paying for an alloy the part never needed.
Specifying the grade, not just the name
The material name is not enough; the grade is the specification. Aluminium 6061-T6 and 7075-T6 are different strengths, and stainless 303 and 316 are different jobs. The grade, the temper and the condition all belong on the drawing, and the mill certificate confirms them. Incoming stock here is verified against the mill certificate before it is cut - composition by XRF, hardness where specified. Contact Felipe Iglesias at [email protected] or +86 13126536955 with the material and the grade, and the quote reflects the real stock.
The evidence behind the numbers
Ask for proof and the answer is specific: Dongguan Zhuohang Ltd runs 100+ CNC machines on a 6,800 m² floor in Hengli Town, Dongguan, including the Mazak VARIAXIS I-600 five-axis, the INTEGREX I-250H S mill-turn, Brother SPEEDIO, and TSUGAMI, STAR and CITIZEN Swiss lathes. Inspection runs on a Hexagon CMM with the 10:1 gauge rule, and ISO 9001:2015, IATF 16949:2016 and ISO 14001:2015 are held by verifiable certificate number. Critical characteristics are tracked with Ppk 1.67 initial and Cpk 1.33 in production - a tolerance quoted here is a tolerance held.
Buyers across Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa are served from Dongguan with worldwide shipping. MOQ is 1 piece; lead times run about 3 / 7 / 30 days. Send the drawing and quantity to Felipe Iglesias at [email protected] or +86 13126536955 and the quote returns with the process spelled out.
Starting your order
The quickest route to a part is a model and a quantity. Send the STEP or IGES file with a 2D drawing that names the tolerances, datums, material grade and finish, plus the quantity and the lead time you need, and you get an itemised quote - material, setup, cycle time and inspection - not a round figure. No finished drawing? Send what you have and the questions that are blocking you; the goal is to begin, not to wait for a flawless package.
Email Felipe Iglesias at [email protected] or call +86 13126536955. MOQ is 1 piece, lead times run roughly 3 / 7 / 30 days, and shipping covers Europe, the Americas, Asia, Oceania and Africa, plus worldwide from Dongguan.
De-risking a first order
A trial order of a few pieces is the cheapest insurance you can buy — it proves the routing, the tolerance and the paper trail on a small batch before the volume order locks in. One floor, one quality system, one accountable party, whether the run is a single part or a full production lot, so what the trial confirms is what production repeats.
What this shop actually runs
If you ask for capability evidence, you deserve a specific answer. This facility operates 100+ CNC machines across 6,800 m2 in Dongguan, China, staffed by 100+ people. The machines, listed by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Set up for compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Set up for prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Set up for long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Set up for shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Set up for hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerance bands: ±0.003 mm milled, ±0.002 mm turned, ±0.002 mm ground or wire-cut. Capability indices: Ppk >= 1.67 at the initial study; Cpk >= 1.33 ongoing in production.
Certifications: ISO 9001:2015 (116024/A/0001/UK/En) · IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded) · ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, since 2005).
Service area: we supply Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa, with worldwide delivery from China.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Get a quote with the cost drivers named
Send your drawing to [email protected] or call +86 13126536955. We will tell you which tolerance or setup is driving the number, not just the number.
Frequently Asked Questions
What files do you need for a quote?
Send a 3D model (STEP or IGES) plus a 2D drawing that names the tolerances, surface finishes, material spec and any inspection or certification needs. The drawing is the contract; the model alone typically leaves the tolerance scheme open.
Can you work to ASME Y14.5 as well as ISO?
Yes. Both geometric dimensioning conventions are used. The important thing is that the drawing states which one applies, because a single symbol is not interpreted identically under the two standards.
Do you certify titanium material?
Yes. Material certificates are supplied with the parts and incoming stock is checked against the mill certificate — composition by XRF, hardness where specified. Traceability is per heat or per batch as the certificate defines it.
Do you hold stock or consignment for repeat orders?
On repeat orders, a forecast lets the shop hold material and, where justified, dedicated fixturing in readiness. It is a commercial arrangement rather than a standard term, worth raising at order two rather than order one.
Are you a manufacturer or a trading company?
A manufacturer. The legal entity is Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39), operating a 6,800 m² facility with a floor of 100-plus machines and 100+ staff in Dongguan. Factory visits are welcome.
What materials do you machine?
Aluminum, stainless steel, titanium, brass, copper, and Inconel for metals; PEEK and Delrin (POM) for plastics. Material certificates are verified on incoming stock.
How is an engineering change handled mid-production?
The change is documented against a revision, the affected parts in process are identified, and the revised drawing is confirmed in writing before work restarts. The important part is that the revision in force at any moment is a single, written one.
Continue reading: 3 Axis CNC Turning Service · 4 Axis CNC Turning Service · 5 Axis CNC Turning Service
Standards referenced on this page
- ASTM B348/B348M-21 — Standard Specification for Titanium and Titanium Alloy Bars and Billets
- ASTM B211/B211M-19 — Standard Specification for Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire
- ISO 9001 — Quality management systems — Requirements