What casting processes does Renyi offer?

Renyi provides silica-sol investment casting, composite investment casting, resin-sand casting, and water-glass sand casting. Components from 5 grams to 7 tonnes, with CNC finish-machining and NDT inspection (spectrometer, tensile/impact, MPI, UT, radiography) available.

What materials and standards does Renyi work with?

Renyi casts corrosion-resistant steels (duplex & austenitic stainless), high-alloy grades (nickel-based, Hastelloy), and structural steels (carbon & low/medium-alloy). The foundry works to ASTM, EN, GOST, and JIS standards. Final grade, heat-treatment condition, and test documentation are confirmed against the customer drawing during RFQ review.

What should I include in a casting RFQ to Renyi?

A complete RFQ: (1) 2D drawing with revision, dimensions, tolerances; 3D model if available. (2) Material grade and governing standard (ASTM/EN/GOST/JIS), heat-treatment state. (3) Quantity — batch size and annual demand — target delivery date, required supply state (raw, rough-machined, finished). (4) Inspection scope: material certificate, dimensional report, NDT (MPI, UT, RT), acceptance criteria.

Where is Renyi foundry located and which markets does it serve?

Renyi (Zhejiang Renyi Valve Manufacturing Co., Ltd) is in Oubei, Yongjia, Wenzhou, Zhejiang, China. Established in 2000, the 8,000 m² facility with 150 staff and 20+ CNC machines serves Europe, North America, and Russia. Contact: renyicasting@163.com / +86 057766995151.

High-Temperature Pouring

A real 4K frame from the pouring cell gives the first screen stronger foundry energy.

Dense Ceramic Shell Line

Repeated white shell trees create a cleaner, brighter process rhythm for the carousel.

Controlled Production Line

A full workshop line replaces the cropped robot view and keeps the spatial depth intact.

Finished Components Shelf

Finished castings stay complete in frame, with a calm technical shelf composition.

PRECISION CASTING / OEM PRODUCTION

Metal,
made exact.

Investment casting, sand casting and machining for valve, pump and industrial components—built around your drawing.

In operation since 2000

Production floor 8,000 m²

Annual pour weight ≈ 6,000 t

Component envelope 5 g — 7,000 kg

FACTORY RECORD

Seven workshop stages. Three casting routes.

The workshop route follows the actual casting floor: wax injection, wax repair, tree assembly, automatic shell making, dewaxing, pouring and post-processing. RFQs can be routed through low-temperature wax casting, medium-temperature wax casting or sand casting.

Low-temp wax casting For stable batch parts where route efficiency and repeatability matter.

Medium-temp wax casting For tighter surface, dimensional and alloy-control requirements.

Sand casting For larger industrial components that need resin-sand or water-glass sand molds.

Wax injection presses at Renyi — 01 **Wax injection workshop** Wax patterns are formed on dedicated injection presses.

Wax pattern repair at Renyi — 02 **Wax repair workshop** Parting lines and surface details are repaired before assembly.

Wax tree assembly at Renyi — 03 **Tree assembly workshop** Patterns are gated and grouped for shell building.

Automatic shell-making line at Renyi — 04 **Automatic shell line** Robotic slurry and sand steps build repeatable ceramic shells.

Dewaxing furnace operation at Renyi — 05 **Dewaxing workshop** Shells are dewaxed and heated before pouring.

Molten metal pouring at Renyi — 06 **Pouring workshop** Heat and pour control link the shell to the final casting.

Post-processing workshop at Renyi — 07 **Post-processing workshop** Cleaning, cutting, grinding and transfer steps prepare castings for inspection.

Workshop route shown by production stage.

PRODUCT SERIES

Components shaped by application.

PRODUCTION SHOWCASE Watch our casting process — from wax pattern to finished component.

PRODUCTION EQUIPMENT

Equipment built for precision casting at scale.

Investment Casting Lines

Silica-sol and composite process lines with automated dipping and drying

Sand Casting Systems

Resin-sand and water-glass systems for large industrial castings up to 7 tonnes

20+

CNC Machining Centers

Rough and finish machining, vertical and horizontal turning centers

In-house

Heat Treatment

Solution annealing, normalizing, tempering per material specification

150+ Team Members

23 Technical Engineers

15+ yrs Avg. Experience

50% Bachelor's or Above

TEAM & R&D

Experience you can engineer with.

Our technical team brings decades of casting process knowledge — from gating design to solidification simulation. We develop over 1,500 new part numbers annually, working across 1,000+ alloy grades for customers in 30+ countries.

See people and shop-floor collaboration

START YOUR PROJECT

Ready to send your drawing?

Our engineering team reviews every RFQ against your drawing, material specification and delivery requirements. No online sales — just a technical review from a foundry that knows its alloys.

Send a drawing renyicasting@163.com

START WITH THE DRAWING

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