Dingxiang, China
Large rings ｜ shaft forgings ｜ gears ｜ hydraulic cylinders
Materialcarbon steel / alloy steel / stainless steel
Applicationswind power / pressure vessels / chemicals / coal mines / construction machinery / shipbuilding
Drawings: PDF / DWG / STEP Direct from the factory · reply within 24 hours
The company was registered in Dingxiang in May 2023. Dingxiang's forging capacity used to be fragmented: one shop had a hammer, another a ring-rolling mill, a third did heat treatment only — and to get a single finished ring, a buyer often had to travel between three or four workshops. That is exactly why we set up the company: to assemble the casting and forging, heat treatment and finishing capabilities into one line around a specific order. The customer deals with one person; we handle the operations in between. Orders came one after another, and over a few years we established ourselves firmly in the industry.
The equipment was gathered piece by piece: one 5-tonne, one 10-tonne and one 25-tonne hammer; three hydraulic presses at 4,000, 5,000 and 8,000 tonnes; one D53 ring-rolling mill each at 2, 5 and 8 metres; more than ten large CNC vertical lathes from 4 to 8 metres; pit-type furnaces for hardening, normalising and annealing at 3, 6 and 8 metres; plus more than 50 units of supporting machining equipment. Inspection is fully equipped and annual capacity reaches 60,000 tonnes. On raw material we work long-term with the Shanxi Taigang, Laiwu Steel and Chengde Jianlong mills and the Dingxiang finishing centre.
We mainly produce large rings, shaft-type forgings, gears and hydraulic cylinders in carbon, alloy and stainless steel, for wind power, chemicals, pressure vessels, water plants, coal mines, construction machinery and shipbuilding. Ring diameter up to 8 metres; single forging weight up to 40 tonnes.
Cost comes down by shortening the chain. Dingxiang has the full industrial base, only it is spread across individual shops. What we do is consolidate it: bringing together the strengths of the steel-casting, forging, heat-treatment and finish-machining plants, each contributing what it does best. That brings operating costs down substantially — on the same drawing we cover a wider range and have more room on price. The goal is simple: to deliver products and service beyond what the customer expects.
People are an asset, not a cost. The relationship between company and employee today goes well beyond a contract: what happens to the company affects every individual, and the reverse is true too. So the channel is open — management talks with staff regularly, one-to-one and in groups: pace of work, where things are stuck, what support is needed. Targets are set jointly, aligned with the company's direction, and everyone knows exactly what their part is.
Certainty in how results are shared. The company gives rewards and promotions based on actual performance, with several separate incentive schemes so that people share in the company's growth. We also look after health and work-life balance through more flexible scheduling and welfare measures that cut unnecessary pressure. Keep the people and the craft, and delivery dates hold.
Business licences of our three entities (same legal representative), the three management-system certificates and four patents. Click any card to open the original.
The certificates, patents and licences are all listed above — need the originals or stamped copies? Request a quote→
Every item is made to a specific drawing. We do not sell "stock metal from the warehouse": we determine the forging schedule, upset ratio and machining allowance for your next processing step. Below are the six groups we handle most often.
Forgings for gear cutting and finished gear shafts after preliminary machining: allowance on the pitch circle, machined locating journals and faces for fixturing on the gear hobbing machine.
Stepped shafts, spindles, axles with collars and keyways. Preliminary turning with allowance for finish machining.
Large-size ring forgings and tyres for mills, rotary kilns and support assemblies. Ring rolling on D53 mills up to Ø 8 m.
Series batches of ring and disc blanks — including for travel and crane wheels, rollers and blocks. Size is stable from batch to batch, tooling is proven.
Flat, weld-neck and slip-on flanges from forged blanks — the metal grain runs along the contour, not across it. Plus rings, discs and weld-neck nozzles.
Thick-walled hydraulic cylinder sleeves, hollow shafts, rods and shells, including blanks for pressure vessels. Piercing and rolling — without a longitudinal weld seam.
Can't find the item you need in the list? We forge to drawings — send us the file, we'll evaluate it and reply within 24 hours.
Every category above can be adjusted to your drawing — size, grade, heat treatment. Request a quote→
We do not outsource ring rolling, heat treatment or machining. Everything that happens to the blank after forging stays under our control — that is exactly why dimensions and structure do not "drift" between processing stages.
Marking, cutting and heating to forging temperature under pyrometer control.
Open-die forging and stamping on hammers of 5–25 t and presses up to 8000 tf, with forging ratio control.
D53 ring-rolling mills for 2, 5 and 8 metres — to the finished profile without a weld seam.
Hardening, normalizing and tempering in 3 / 6 / 8 m furnaces according to the schedule set in the batch process.
Turning, boring, gear cutting. Chemical composition, mechanical properties, UT, dimensional report, packaging.
| Equipment | Qty | Key parameter |
|---|---|---|
| Hydraulic presses | 3 | 4000 / 5000 / 8000 tf |
| Ring-rolling mills (D53) | 3 | outer Ø 2 m · 5 m · 8 m |
| Hammers | 3 | falling weight 5 / 10 / 25 t |
| Heat treatment furnaces | — | 3 / 6 / 8 m · quenching, normalizing, annealing |
| Forging reheating furnaces | — | sized to the forgings |
| Machining machines | — | turning · boring · gear hobbing |
If you are unsure, send the drawing — we will check it against the actual equipment.
| Machine | Size range | Part weight | Note |
|---|---|---|---|
| D51 large | OD ≤ 3 m · ID ≥ 500 mm · height ≥ 1.6 m | ≈ 13 t | thin-wall rings from 50 mm and rectangular rings; no profiled rings |
| D51 small | OD ≤ 800 mm · ID 200 mm · height ≤ 200 mm | ≤ 0.1 t | thin-wall rings from 30 mm |
| D52 large | OD ≤ 7 m · ID ≥ 1 m · height ≤ 900 mm | ≤ 15 t | main machine for profiled rings; single pieces possible |
| D52 medium | OD ≤ 3 m · ID ≥ 500 mm · height ≤ 280 mm | ≤ 1 t | single pieces possible |
| D53 large | OD ≤ 7 m · ID ≥ 800 mm · height ≤ 900 mm | ≤ 23 t | from one piece, fast changeover, small allowance; rectangular rings 1–7 m; no profiled rings |
| D53 small | OD ≤ 3 m · ID ≥ 400 mm · height ≤ 400 mm | ≤ 1 t | from one piece; no profiled rings |
| Die forging | max Ø 500 mm | — | allowance and tolerances per the drawing and the applicable standard, confirmed before production |
| Bar-holder hammer | rings Ø 1.1–6 m · shells ≤ 1.6 m · blind discs ≤ Ø 5 m | 0.5–25 t | profiled forgings |
| Pneumatic hammer | Ø ≤ 400 mm · height ≤ 400 mm | ≤ 70 kg | small and medium parts |
| Electro-hydraulic hammer | — | 0.5–3 t | mainly shafts, forgings as a supplement |
Annual capacity up to 60,000 tonnes. Long-term partnerships with the Shanxi Taigang, Laiwu Steel and Chengde Jianlong steelworks and the Dingxiang finishing centre.
Equipment parameters are specified as-is — the customer has the right to request an inspection report before placing an order.
Want to know which stages your part needs and how soon it can ship? Request a quote→
The twelve grades we handle most, the national standard each is specified to, and the usual temperature range from public references. Heat treatment runs in our own furnaces with a report per batch; the actual schedule is set per drawing.
| Grade | Type | Typical parts | Standard / temperature |
|---|---|---|---|
| 45 | quality carbon structural | shafts, gears, connecting rods, general machinery parts | GB/T 699 · 800–850 °C |
| 35 | quality carbon structural | crankshafts, shafts, pins, levers, connecting rods, sleeves | GB/T 699 · 840–900 °C |
| 40Cr | alloy structural | gears, shafts, worms, spline shafts, medium dies | GB/T 3077 · 820–920 °C |
| 42CrMo | high-strength alloy | high-strength bolts and nuts, crankshafts, connecting rods, half-shafts, dies | GB/T 3077 · 840–920 °C |
| 35CrMo | high-strength alloy | engine crankshafts, drive shafts, gears, high-strength bolts | GB/T 3077 · 850–920 °C |
| 40CrNiMo | high-strength alloy | aero-engine shafts, gears, fasteners, connecting rods, crankshafts | GB/T 3077 · 820–920 °C |
| 34CrNi3Mo | high-strength alloy | heavy-machinery drive shafts, large gear rings, turbine shafts and blades | GB/T 33084 · 820–920 °C |
| 20CrMnTi | case-hardening | gears, drive shafts, axles, piston pins | GB/T 3077 · 850–950 °C |
| 20Cr2Ni4 | high-strength case-hardening | heavily loaded gears, gear shafts, rolling-mill bearings | GB/T 3077 · 780–940 °C |
| Q345B | low-alloy high-strength structural | welded structures, general load-bearing members | GB/T 1591 · 850–920 °C |
| Q235B | carbon structural | general machinery parts, brackets, backing plates | GB/T 700 · 880–930 °C |
| 304/304L · 316/316L | austenitic stainless | shells, flanges, hollow shafts, seal covers, drums | GB/T 20878 · 1010–1150 °C |
pressure on the billet causes plastic deformation into the required shape. Grain is refined and the structure becomes uniform, so strength, hardness and toughness are higher. Load-bearing parts we make only as forgings.
molten metal is poured into a mould and solidifies. Complex shapes, lower cost, good for large batches, but internal porosity and shrinkage cavities are possible, so mechanical properties are usually below those of a forging. Typical: pump and valve bodies, engine blocks, hubs.
Your grade is not in the table, or you need a specific melt route and NDT level? Request a quote→
We supply blanks to those who finish the part themselves — machine-building and repair enterprises, not end consumers.
Gear rims and mill tyres, crusher housings, support rings, shafts and rollers for beneficiation equipment.
Forged blanks for gear cutting — with allowance on the pitch circle and machined bases for mounting on the machine.
Rolls, support rollers, tyres of rotary kilns and drying drums. Work with long service life and heat-resistant grades.
Flanges, shells and weld-neck forgings for pipeline valves, as well as ring blanks for power engineering.
Blanks for pressure vessels and apparatus: shells, heads, flange connections.
Travel and crane wheels, sheaves, rollers and support rollers for cranes, conveyors and material handling equipment.
Don't see your industry? Describe the working conditions and we'll match it. Request a quote→
Each batch ships with a set of documents. Below is what we issue as standard; the scope of inspection is agreed before production starts, not after.
Chemical composition, mechanical properties, heat treatment mode. Issued in a form similar to EN 10204 3.1.
Verification of metal soundness for the absence of internal defects per GOST R 55724 / EN 10228-3.
Dye penetrant or magnetic particle testing per GOST 21105 / EN 10228-1 — as required by the drawing.
Report on actual dimensions with deviations within the drawing. If required — at the customer's inspection points.
Certificates and approvals
The enterprise is entered in the Unified State Register of the PRC, code 91140921MACL02Y69J, foreign trade is included in the scope of activity. Copies of the business licence, inspection reports and other documents we hold are available on request.
Need extra tests or third-party witnessing beyond the standard documents? Request a quote→
Dingxiang is the "Home of Chinese forging". The tradition of ironworking here goes back more than two thousand years: metal was forged in these places as early as the Han dynasty, and in the Ming era local craftsmen were called "iron men". In 1999 the county was officially awarded the title of home of Chinese forging.
Today Dingxiang accounts for over 30 % of the Chinese market for forged flanges and about 70 % of their exports, and its share in the production of flanges for wind power exceeds 60 %. This is Asia's largest base for flange production. Our plant operates right here — at a site in Dingxiang County, with its own equipment fleet and five workshops: cutting, heating, forging, ring rolling, heat treatment.
Year founded
2023
Production area
13 000 m²
Personnel
120+ persons
Workshops
5
Annual capacity
60,000 t
Presses
3 presses
Two of the employees are highly qualified engineers. Annual capacity and product range are confirmed according to actual load.
Want to make sure we really manufacture? Request a live video walkthrough of the workshop — or come for an inspection, we will arrange the reception.
In 2026, the enterprise began technical reconstruction of the production site in Dingxiang County. The project is registered in the register of investment projects of Shanxi Province — this is a public record that you can verify yourself using the code below.
Project code 2601-140921-89-05-923787 · published by the Administrative Services Bureau of Xinzhou City dated 06.08.2026 · verify the record →
Want to visit the workshop, or verify our registration record? Request a quote→
This is not a slogan — these are the four lines we actually hold when scheduling production and quoting.
Forging, ring rolling, heat treatment and rough machining all run on one site in Dingxiang, with no outside subcontracting. The process does not travel, so size and structure do not drift at the handovers.
We derive the forging process, the forging ratio and the allowance from your next operation — we do not sell you a billet we happen to have on the floor.
We draw on the Dingxiang industrial base and take the best of each part: material nearby, heat treatment and machining in-house. With running costs down, we can quote real numbers.
Founded in 2023, now more than 120 people, two of them senior engineers. Performance is open, there is a team event every month, and employee wellbeing and work-life balance are treated as real business. Craft keeps people — and people keep the work steady.
The goal is simple: you take the blank back, put it on the machine, and start cutting.
If this works for you, send one drawing and we'll start with a single order. Request a quote→
To calculate the price accurately, not "approximately", we need six things. If something is missing — write as is, we will sort it out in correspondence.
