Step 01
Investment casting
Silica-sol shell building for thin walls, fine detail and smooth as-cast surfaces. Suited to complex geometries that would need several welded or machined parts to reproduce. Casting capabilities
OEM / ODM manufacturing · Shandong, China
Precision castings, machined and inspected to your drawings.
Hengri is an OEM and ODM foundry and machine shop in Shandong, China. Bring us your drawings and we manufacture to them — or bring us a sample part and our engineers will develop a castable, machinable design around it. Casting, machining, heat treatment, finishing and inspection happen under one roof.
- ISO 9001:2015 quality system
- Own foundry — over 20 years
- Prototype to series production
Real plant, real footage
See the factory before you send a drawing
Buyers cannot judge a supplier from a brochure. This walk-through covers the wax room, the shell line, melting and pouring, the machining bays and final inspection — filmed on our own floor, with heat numbers shown on camera.
- Melting and pouring with heat numbers visible on camera
- Shell building and dewaxing, the step most buyers never get to see
- CNC bays running production parts, not demonstration pieces
- Final inspection and export packing
- Third-party inspectors are welcome on site — we will schedule access and prepare the test pieces
Export experience
Where our castings already ship
Our export references are concentrated in three markets. Each one carries its own standards, language and customs paperwork — all handled in-house before your order is loaded.
Japan
Italy
South Korea
Direct export experience with import & export licence held in our own name. North America and Europe are our current focus markets. For market-specific requirements (EU PED, material certificates to the standard you specify, US or UK compliance), see market access and compliance.
What we do
Four production steps, one supplier
Most projects stall in the hand-offs — a foundry that cannot machine, a machine shop that cannot cast. Hengri keeps casting, machining, finishing and inspection in-house, which shortens lead times and fixes responsibility in one place.
Step 02
CNC machining
Turning, milling and drilling on castings or bar stock, held to drawing tolerances with first-article inspection reports supplied. Machining capabilities
Step 03
Heat treatment & finishing
Normalising, hardening, tempering and solution annealing, plus shot blasting, galvanising and coating to your specification. Finishing options
Step 04
Inspection & documentation
Chemical analysis of the heat, dimensional reports, NDT where required, and full material traceability from heat number to shipped carton. Quality system
Why one supplier matters
Fewer hand-offs, shorter lead times, one point of accountability
Splitting a casting between a foundry, a machine shop and a plating line multiplies your freight, your paperwork and the number of people who can blame someone else. Every step below happens in our own plant.
- OEM and ODM — manufacture strictly to your drawings, or reverse-engineer a more castable design from a sample part you already buy.
- Tooling and wax patterns produced in-house, so pattern changes do not wait on a third party.
- Machining fixtures designed alongside the casting to avoid re-fixturing after first article.
- One inspection file per order covering casting, machining and finishing results.
- Consolidated export packing from a single dock, one set of shipping documents.
Your photo goes here
Wide shot of the pouring line or machining bay. Real plant photography is the single biggest trust signal on a supplier website — stock images work against you.
Recommended: 1600 × 900 px, under 200 KB, WebP or JPG
At a glance
The numbers buyers ask for first
If something you need is missing here, ask for it directly — we would rather answer a specific question than have you guess.
MaterialsStainless 300/400 series, low-alloy, high-temperature alloy
Casting processSilica-sol shell (lost wax) · lost foam (EPC)
Unit weight range10 g – 50 kg / pc investment · 20 – 2,000 kg / pc lost foam
Minimum order500 pcs
Sampling time10 days
Production lead time25 days at MOQ 500 pcs
PackingExport carton, pallet, VCI on request
Reducing your risk
What you actually get when you place an order
Switching suppliers carries risk. These are the concrete controls we put in place to make that decision less risky for you.
First article documentation
Before series production, you receive a first-article inspection report with dimensional results, material certificates and, where relevant, process capability data.
Traceability from heat number to carton
Every batch is tied to its melt record. If a question arises months later, we can retrieve the chemistry, heat treatment record and inspection results for the parts you hold.
Engineers who answer in English, in your time zone window
Technical questions go to the people who run the process, not a call centre. We confirm drawing queries in writing rather than assuming.
Small and mid-volume orders accepted
Development quantities and pilot builds are welcome. Most of our long-term accounts started with a single trial order.
A written reply within one working day
Send drawings and we come back with price, tooling cost, lead time and any manufacturability notes — in writing, so nothing gets lost in translation.
Industries served
Components for demanding equipment
We are tooled for parts that must survive load, heat, abrasion or corrosion — and that carry a drawing with real tolerances on it.
Automotive & commercial vehicle
Brackets, clevis and linkage parts, turbo and exhaust components, chassis hardware.
Valve & pump
Bodies, bonnets, impellers, discs and trims in 300- and 400-series stainless.
Agricultural machinery
Wear parts, tines, hitch components, and seeding and harvesting hardware.
Construction & mining
Ground-engaging teeth, pins and bushes, coupler parts, and excavator hardware.
Rail & transit
Fittings, brackets, and safety-critical hardware supplied with full documentation.
Marine & offshore
Deck hardware, cleats, and corrosion-resistant fittings in 316 and 316L stainless.
Food & pharmaceutical equipment
Hygienic stainless components with smooth, easily cleaned surfaces.
Energy & oil field
Fittings, unions and heat-resistant parts for demanding service conditions.
How an order runs
From your drawing to your dock
A predictable route, with the points where you are asked to approve something made explicit. No silent assumptions about tolerances, material or finish.
Capability sheet & RFQ checklist
Equipment list, material grades, tolerance tables and a one-page checklist of what to send us for an accurate quote.
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Drawing review & quotation
We check material, tolerances and finishes against our process, then quote with tooling cost, unit price and lead time — flagging anything ambiguous.
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Tooling and sample approval
Wax dies are produced and sample castings submitted for your dimensional and visual approval before series tooling is committed.
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First article inspection
Full dimensional report, material certificate and any NDT results, submitted for sign-off.
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Series production
Casting, machining, heat treatment and finishing run to the approved process, with in-process checks at each stage.
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Final inspection & packing
Dimensional and visual checks against the approved sample, then export packing with your labels and any VCI protection requested.
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Shipping & documentation
We work to EXW, FOB Qingdao, CIF or DDP, and issue the full shipping document set for your customs clearance.
Certifications
Paperwork you can verify, not just logos
Certificates are only useful if you can check them. Every certificate below is listed with its registration number, issuing body and expiry date, and the scan is downloadable.
What we quote
The parts our plant is set up for
Our tooling, casting and machining are organised around these three families. If your drawing sits close to one of them, you are working with a plant that already knows the pitfalls.
Part photo
Fluid handling
Valve bodies and trim, up to DN300
Precision-cast valve components in 300/400-series stainless, low-alloy and high-temperature alloy. This is the scope our ISO 9001 certificate is issued for, and the area we have shipped into Japan, Italy and South Korea.
Process: silica-sol investment casting
Tolerance: ±0.1 mm by process
Part photo
Piping
Pipe fittings and flanges, up to DN300
Tees, reduced tees, crosses and flanges, cast and finished in-house. Pipe fitting manufacture up to DN300 sits inside our certified scope, so the paperwork matches the product.
Range: fittings & flanges up to DN300
Delivered as: cast-to-print, machined and inspected
Part photo
General industry
Machinery, marine and building hardware
Machinery parts, marine and building hardware in the same materials and finishes. Heavier parts move to lost foam, which we run at a separate facility alongside the investment casting plant.
Weight: up to 2,000 kg / pc (lost foam)
Finishing: shot blasting, coating, galvanising
Send us a drawing and get a real answer
Include material, annual quantity, key tolerances and target lead time. We come back with price, tooling cost, lead time and manufacturability notes against your drawing.
Every quotation is quoted per drawing