Email support
syjx@shengyangringrollingmachine.com
2026-01-12
Finding a good manufacturer of vertical ring rolling mills in China is not about just typing a query into a search engine and choosing the most beautiful picture. Many people immediately go to Alibaba, and this is the main mistake. There are a lot of resellers there who have never seen how a frame is processed. We need to look for those who actually design and assemble. And this is where the fun begins.
If we talk about geography, enterprises in the provinces of Shandong, Henan and Jiangsu traditionally have a strong position. But ?strong? - does not mean “all are good?”. In Shandong, for example, there are many machine-building factories, but the level is different - from semi-handicraft workshops to serious players with their own design bureaus. The problem is that even one plant can make excellent lathes and mediocre rolling machines. You need to look specifically at specialization.
I once contacted a factory near Qingdao, which loudly announced the production of ring rolling equipment. I arrived - and in their workshop they had one old sample, which they had once copied, and that’s all. They essentially sell drawings and assembly from purchased components. The quality of hydraulics is a lottery. For simple rings, it may be fine, but if accuracy in diameter and ovality is needed, especially for critical applications, this is not an option.
Hence the conclusion: a website with a beautiful catalog means nothing. We need a video of the machine in operation, preferably with small parts. You look at the smooth movement of the sliders, at the synchronization - a lot is immediately clear. And be sure to ask about the CNC system. If they start mumbling in response or offer you some unknown local system, this is a red flag. Siemens or Fanuc are better, albeit more expensive, but less headaches with setup and repair.
This is perhaps the most important skill. The first is the language of communication. If an “international sales manager” contacts you? with perfect English, but who cannot answer a technical question about the torque of the main drive or the type of position sensor - this is an alarm bell. A real manufacturer can always involve an engineer in a conversation, at least through the same manager.
The second is the detail of the proposal. The intermediary will often send a standard PDF catalog with common phrases. The manufacturer, especially if you asked specific questions about your workpiece (material, dimensions, accuracy), usually answers more specifically: “For your 40ХНМА alloy, we recommend increasing the power of the main engine by 15%?”, or “The design of this model allows you to easily replace the mandrel to suit your standard size?”. This shows that they faced similar challenges.
The third point is openness. Are they ready to organize a video tour of the workshop via Zoom? Will they show the assembly area or test bench? Many refuse, citing trade secrets. This is partly true, but for a serious buyer there will always be an opportunity to show something. I once brought to light a “factory” that turned out to be just an assembly warehouse. In the video, in the corner of the workshop there were boxes with logos of other well-known component manufacturers - everything became clear.
I’ll tell you about one positive, but not without difficulties, experience. We were looking for a machine for rolling rings up to 2 meters in diameter from structural steel. After a long elimination we reachedShandong Shenyang Mechanical Equipment Co.,Ltd. On their websiteshengyangjxgroup.ruthe information was structured, but without pathos. It is clear that they position themselves ashigh-tech enterprise, specializing specifically in forging and rolling equipment, and not in everything in a row.
The correspondence began with the technical department. They sent not just a catalog, but a selection of models with comments on which one was more suitable for our pressure and accuracy parameters. They also sent a video of their machine working with a workpiece similar to ours. This was already encouraging.
But even here there were some “buts”. The specification originally specified a hydraulic system from Rexroth. In the process of clarifying the price offer, it turned out that for our configuration they offer “similar quality, but a more favorable price?” Chinese assembly. We had to insist on the original, which, naturally, entailed a recalculation of costs and deadlines. This is normal practice - you should always check the final hardware specification. to the last screw.
What I liked in the end was that they didn’t argue, but provided two options with prices and guarantees for different hydraulic systems. It is clear that there is flexibility, but conditions must be clearly set.
Here the stereotype breaks down immediately. goodvertical ring rolling machinefrom a decent Chinese manufacturer - it’s not “cheap”. This is significantly cheaper than the German or Japanese equivalent, but more expensive than ?no-name? from the outback. The difference in price is, in fact, the difference in resource, accuracy and availability of service.
One day we tried to save money by purchasing a machine from a small factory in Hebei. The price was attractive, 30% lower than the market average. The machine seemed to be working, but the problem arose in small details: the hydraulic cooling system was clearly designed “back to back”, and after a couple of hours of continuous operation it began to overheat and the pressure dropped. Local mechanics shrugged their shoulders. As a result, I had to purchase and install an additional heat exchanger myself. The total cost of ownership is equal to the purchase of a normal machine, and more nerves are spent.
Conclusion: you need to set aside a budget not only for the purchase, but also for possible modifications “for yourself?” and for spare parts. The best indicator is the availability of key spare parts (shafts, bearing units, sensors) in the manufacturer’s warehouse and readiness to promptly ship them.
Finding a manufacturer and agreeing on a contract is only half the battle. How will the machine arrive and what should I do with it next? I highly recommend specifying the preliminary acceptance stage (FAT - Factory Acceptance Test) in the contract. That is, you or your trusted technician come to the plant, the machine is assembled and launched on a test workpiece in your presence. You measure all the parameters that are specified in the technical specifications. This protects against a situation where a defect or discrepancy is discovered at your factory during unpacking.
There are also surprises with logistics. The dimensions and weight of such machines are substantial. Find out who prepares loading drawings and trailer mounting diagrams. A good supplier always provides a complete package of documents for transportation. And be sure to insure the cargo.
As for “after-sales”, it all comes down to documentation and remote support. Electrical diagrams, hydraulic diagrams, setup instructions - everything should be in Russian or, at a minimum, in clear English. A plus will be the availability of remote access for diagnostics via CNC. At the sameShandong ShenyangThere was such an option that once helped out a lot - their engineer remotely helped reset the error in the control system, without resorting to calling a specialist on site.
So, to summarize my sometimes bitter experience. Don’t search according to the principle “where is it cheaper?”. Search according to the principle “who specializes?”. Create a clear technical specification with all parameters: from the dimensions of the workpiece and the finished ring to the required accuracy class and desired steel grades.
Then make a broad request, but immediately weed out those who answer in a stereotyped way. Ask for details, ask for a video, ask to talk to a technologist. Be sure to check the history of the company, look for reviews, but not on the site itself, but on industry forums, if possible. MentionedShandong Shenyang Mechanical Equipment Co.,Ltdis one example of a sane option, but this does not mean that it is the only one. There are a couple more worthy factories in the same province.
The main thing is not to rush into prepayment. Extend payments, tie the last tranche to a successful launch in your production. And be prepared for the fact that even with a good supplier you will have to communicate a lot, clarify and control. Finding and purchasing a machine is not a one-time transaction, it is the beginning of a long relationship. And how you choose your partner will determine whether this relationship will be a headache or a work process.
