Our CNC machining service covers turning, milling, boring, tapping and complex multi-axis processing for ductile iron, cast iron, steel, stainless steel, aluminum and plastics. Equipped with complete CNC centers and CMM inspection, we produce high-precision pressure-resistant mechanical accessories, supporting drawing customization, rapid sampling and mass production.
Capability Module | Core Service Item | Detailed Description | Application Scenario | Service Guarantee |
|---|---|---|---|---|
Custom Service Capability | Full-Process OEM/ODM One-Stop Service | Covering product design optimization, mold supporting, blank casting/forging, full-process CNC precision machining, and finished product assembly. Support full-cycle cooperation from small-batch sampling, medium-batch trial production to mass production. | Compressor pressure-resistant accessories, construction machinery hardware structural parts, pneumatic equipment precision parts, automotive machined parts, hydraulic valve blocks | 3-7 days fast sampling, 1-on-1 dedicated engineer, free DFM process optimization solution to reduce mass production cost |
Processable Materials | Full-Range Metal/Non-Metal Materials | Metals: Ductile iron (QT450-10/QT700-2), gray cast iron (HT250/HT300), carbon steel, alloy steel, 304/316 stainless steel, aluminum alloy, brass, red copper; Non-metals: POM, nylon, acrylic and other engineering plastics | Pressure-resistant shells, sealing flanges, bearing seats, cylinder blocks, valve blocks, precision mounting brackets, wear-resistant bushings | Spectrum analysis report and mechanical property test report provided for each batch, full traceability of materials |
Machining Accuracy & Tolerance | Full-Process Precision Machining Standard | CNC turning tolerance: ±0.005~±0.02mm; CNC milling tolerance: ±0.008~±0.03mm; Boring tolerance: ±0.005mm; Drilling/tapping tolerance: ±0.02mm; Surface roughness Ra0.8~Ra3.2, customizable; Flatness ≤0.02mm/100mm | Precision fit shaft & hole, sealing groove, high-pressure pressure-resistant parts, precision mounting surface, threaded hole machining | First article CMM full inspection, regular in-process inspection, 100% inspection of key dimensions, full set of dimension inspection report provided with shipment |
Core Machining Processes | Full-Process CNC Precision Machining | Equipped with vertical/horizontal CNC machining centers, turn-mill composite machining centers, CNC lathes, CNC boring machines, drill-tap centers. Can complete turning, milling, boring, drilling, reaming, tapping, chamfering, rolling and other full-process integrated machining, no secondary outsourcing. | Complex structural parts, multi-face machining parts, high-precision hole system parts, special-shaped contour parts, integrated forming shells | Full-process independent control, no outsourcing links, controllable machining cycle, avoid accuracy deviation caused by multi-link circulation |
Drawing Compatibility | Full-Format Compatibility & Reverse Engineering | Compatible with 2D CAD, 3D STEP/IGS/SolidWorks/UG and other mainstream design formats. Support reverse mapping and reverse engineering development from physical samples, can assist in drawing standardization and mass production process optimization. | New product R&D sampling, import parts localization replacement, non-standard custom parts, old equipment parts reproduction | Professional engineers complete drawing review within 24 hours, identify machining risks in advance, provide optimal machining solutions |
Quality Control System | Full-Process Quality Traceability | Strictly implement ISO9001 quality management system, full-process control from incoming material inspection, first article inspection/in-process inspection/final article inspection in machining process, to finished product final inspection. For key pressure-bearing parts, UT/MT non-destructive testing can be provided on demand. | High-pressure working condition accessories, safety critical parts, export compliance parts, mass production parts | All products come with batch quality inspection certificate, full record of material and dimension, free rework/return for non-artificial damage within warranty period |
Production & Delivery Capacity | Stable Mass Production & Delivery Guarantee | Own 10+ CNC machining centers, full series of CNC machining equipment, supporting own casting/forging workshop, can realize full-process independent production from blank to finished product, monthly capacity up to 50,000+ pieces. | Small-batch trial orders, annual framework bulk orders, global export orders, urgent replenishment orders | Conventional orders delivered in 15-30 days, urgent orders can be scheduled preferentially, full set of customs clearance documents provided for export orders, on-time delivery rate ≥98% |
Post-Processing Supporting Capability | One-Stop Supporting of Full-Range Surface Treatment | Can complete shot blasting, black oxide, anodizing, electrophoresis, Dacromet, powder coating, galvanizing, nickel plating, passivation and other full-range surface treatments, custom anti-corrosion, wear-resistant, aesthetic surface processes on demand. | Outdoor use accessories, corrosion-resistant working condition parts, appearance requirement parts, anti-rust packaging parts | Full-process traceability of surface treatment, salt spray test can be provided on demand, meet export environmental protection standards |


Shanghai Hehua Machinery Technology Co., Ltd. was established in 2005, and its subsidiary Hehua Machinery Technology (Kunshan) Co., Ltd. was established in 2018.
Hehua is a company specializing in automotive, rail transit, aerospace, wind power nuclear power, industrial machinery, and rack for semiconductor sealing and testing equipments, new energy equipment and other high-end equipment manufacturing companies that provide key metal parts and components.
Over 17800 square meters' plant which is located at No. 66, Xingpu Road, Lujia Town, Kunshan City, Jiangsu Province. The company has more than 160 employees and annual sales of more than 110 million RMB.
Hehua has passed ISO 9001 quality management system certification, IATF16949 automotive quality system certification,EN 15085 rail vehicle and parts welding system certification, and welders have passed EN 9606-1 qualification certification.








Trust & Reliability?
Years of export experience to global markets, proving our reliability in quality, logistics, and compliance.
Certified quality management and standardized production ensure reliable and repeatable results for every order.
What tolerances can you achieve?
Our standard tolerance for CNC machining is DIN-2768-1-f (fine) or +/- 0.01mm. For high-precision requirements, we can achieve tolerances as tight as +/- 0.005mm depending on the geometry and material.
What surface finishes do you offer?
We provide one-stop surface treatment services, including: As-machined (De-burred) Sandblasting & Anodizing (Type II / Type III) Polishing & Mirror Polishing Powder Coating & Painting Laser Engraving (Logo/Text)
How fast can I get a quote?
Send us your 3D files (STEP/IGES) and 2D drawings (PDF). Our engineering team will analyze them and provide a detailed quote within 6-12 hours.
What is your typical lead time?
Prototypes: 3-7 days Production 10-20 days We also offer an Expedited Service for urgent projects.
Do you provide samples before mass production?
Yes, we always recommend making a pre-production sample for approval. We will send you photos/videos or ship the physical sample to you for verification before running the full batch.
What if the parts do not meet the specifications?
We have a strict Quality Control policy. If the parts do not meet the drawing specifications, we will remake them for free or
provide a full refund. We stand behind our quality 100%.
What materials can you machine?
We work with a wide range of materials including: Metals, Aluminum (6061, 7075), Stainless Steel (303, 304, 316), Brass, Copper, Titanium Plastics: ABS, POM (Delrin), PEEK, Nylon, Polycarbonate. If you need a special material, just let us know.