Steel Flange Connector
Custom Steel Castings & Machining — From Your Drawing to Finished Parts
This Steel Flange Connector is a critical joining component designed for high‑pressure piping systems, fluid transmission lines, and structural connections in industrial applications. It is manufactured by our in‑house Lost‑Wax Casting (Investment Casting) + CNC precision machining process. The use of ZG42CrMo cast alloy steel provides an excellent balance of high tensile strength, excellent toughness, good hardenability, and reliable performance under elevated temperatures and cyclic loading. The lost‑wax casting process ensures tight dimensional tolerances, smooth surface finish, and the ability to form complex internal geometries — all critical for flange connectors requiring leak‑proof sealing, precise bolt hole alignment, and long‑term reliability in harsh environments.
Our one‑stop approach — covering mold design, lost‑wax casting, CNC machining, surface treatment (anti‑rust oil, primer painting, or zinc plating), and engineered packing — delivers a ready‑to‑install flange connector that meets high‑strength mechanical requirements and withstands vibration, pressure spikes, thermal cycling, dust, moisture, and corrosive media.
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
High Precision Custom Lost-wax Casting ZG42CMo Steel Flange Connector
| Specification Item | Details for This Case | Matech’s Capability / Notes |
| Material Grade | ZG310-570 (Compliant with GB/T 40802-2021 Standard) | Custom manufacturing available according to customer requirements, with optional materials including 20CrMo, 20Mn, 40Cr, etc., accompanied by complete material certification documentation. |
| Unit Weight | 3 kg | Available processing weight range: 1 kg – 100 kg cast components |
| Overall Dimensions | 50 × 30 × 45 mm | Maximum machining size approximately 1000 × 500 × 300 mm; dimensions customizable according to drawings |
| Casting Tolerance | CT8–CT9 Grade | Achieved through precision molds and stable casting process control |
| Machining Tolerance | ±0.02 mm | Supported by advanced 3/4/5-axis CNC machining centers for high-precision machining capability |
| Surface Roughness | As-cast Ra 12.5–25 μm / Machined Ra 0.8 μm | Machined surface finish can achieve Ra 0.8 μm |
| Minimum Wall Thickness | 3 mm | Specialized in thin-wall casting technology; minimum wall thickness down to 3.0 mm depending on component structure |
| Heat Treatment | Heat treatment applicable | Available processes include normalizing, tempering, quenching, and high-frequency heat treatment with digitally controlled temperature management |
| Surface Treatment | Shot blasting | Optional galvanizing, painting, shot blasting, powder coating, and special anti-corrosion coatings available upon request |
| Application Industry | Transmission Equipment | Widely used in robotics, automotive, medical devices, general machinery, valves, and new energy industries |
| Minimum Order Quantity | 200 pcs | Flexible MOQ with support for prototyping and small-batch trial production |
| Sample Lead Time | 40–45 Working Days (Including New Tooling Development) | Lead time subject to drawing review results; expedited production available |
| Mass Production Lead Time | 45–50 Working Days | Delivery schedule determined by order quantity and product complexity; negotiable for long-term cooperation |
| Drawing Formats | STEP, IGES, XT, DWG, PDF | Compatible with all mainstream 2D and 3D engineering drawing formats |
| Customization | Fully Customized | Full customization available for material, structure, tolerance, and surface treatment requirements |
| Certifications | ISO 9001:2015 Quality Management System Certified | EN 10204 3.1 material certificates, dimensional inspection reports, and PPAP Level 3 documentation available upon request |
| Packaging | Customized PE Foam + Wooden Crate Packaging | Customized anti-corrosion and protective packaging solutions available for precision and critical components |
Customization Options
Every casting project starts with your unique design and requirements. Whether it's iron, steel, or aluminum, we tailor every aspect of the manufacturing process to your exact specifications. Below are the key dimensions you can customize with Matech — your drawing is our only standard.
Material Selection
From aluminum alloy to grey/ductile iron to carbon steel/stainless steel — we pour the alloy your design demands. Custom compositions are welcome. Full material certification included.
Casting Process
Our engineers tailor the most suitable manufacturing process to your specific needs based on your part's geometry, volume, and performance requirements, ensuring the optimal balance between quality and cost.
Dimensional Accuracy & Machining
We machine to your exact tolerances. In-house 3/4/5-axis CNC with custom fixtures. Casting tolerance CT4-CT11, machining tolerance down to ±0.005mm.
Heat Treatment
MATECH provides a full range of heat treatment services, including: Annealing, Normalizing, Quenching, Tempering, Carburizing, Nitriding, Solution Treatment.
Surface Treatment & Coating
Matech support: Sandblasting / Shot Blasting, Chemical Degreasing, Pickling/Passivation, Mechanical Grinding / Polishing, Zinc Plating, Hard Chrome Plating, Electroless Nickel Plating, Anodizing,Dacromet, Powder Coating, Black Oxide, Stainless Steel Passivation.
Testing, Documentation & Packaging
From material certificates to complete customs clearance documents, and from custom pallets to packaging optimized for your product's specific characteristics. Your parts arrive fully documented, well-protected, and ready for immediate use.
Our Advantages
Technical Advantages
1
Pattern shop, sand/investment casting lines, CNC machining, heat treatment,surface treatment, and inspection lab — all under one roof. No outsourcing. This vertical integration gives us complete control over lead time, quality, and traceability from raw melt to finished part.
2
Before pattern production begins, we deliver a detailed DFM report covering solidification analysis, riser placement, core design, and machining allowance optimization. We flag potential shrinkage risks, wall thickness issues, and internal cavity challenges early.
3
We specialize in components with intricate internal passageways, and high pressure-tightness requirements — such as valve bodies, pump housings, and exhaust manifolds. In-house X-ray, ultrasonic, and leak/pressure testing ensure internal integrity. Where applicable, controlled weld repair with full NDT verification and post-weld heat treatment keeps your parts on track without hidden outsourcing delays.
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Material Advantages
1
We charge only carefully sorted steel scrap into our electric arc or induction furnaces. Every heat is chemically analyzed by spectrometer before tapping, with real-time adjustments to carbon, manganese, silicon, and alloying elements. Deoxidation and desulfurization practices ensure clean steel with low inclusion content.
2
Every production batch is identified by a unique heat number. Chemical composition reports, mechanical test records (yield strength, tensile strength, elongation, impact toughness at ambient or low temperature), and heat treatment charts are compiled into a traceable dossier — from furnace charge to finished casting.
3
We pour a comprehensive range of carbon steels, low-alloy steels, and stainless steels — including WCB, WCC, LCC, 4140, 8630, CF8 (304), CF8M (316), duplex stainless steels, and heat-resistant grades. Whether you need wear resistance, corrosion resistance, high-temperature strength, or low-temperature toughness, we match the alloy to your operating environment.
Service Advantages
A dedicated project manager oversees the entire process — from design review to final delivery — ensuring efficient communication at every stage.
Quotations are typically provided within 24–48 hours. Production progress is updated regularly through photos and production data, with continuous customer feedback collection throughout the project.
Full batch traceability and 24-hour response to quality-related issues ensure reliable post-delivery support.
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Contact Us
Contact us now! Our technical team and mechanical engineers are ready to provide one-stop support for your project from requirement review, quotation to delivery.
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