Custom Calcium Silicate Shaped Parts & OEM Manufacturing
From a single prototype to container-scale production, Mingfa delivers custom calcium silicate shaped parts and OEM calcium silicate components CNC-machined to your drawings. Density 170-900 kg/m³, service temperature 650-1100°C, dimensional tolerance ±1mm. Backed by three decades of specialization since 1991.
1. Custom Manufacturing Capability Overview
Mingfa has manufactured custom calcium silicate shaped parts for over three decades. Unlike standard board and pipe products built to catalog specifications, custom parts are engineered to the customer's precise geometry, density, and performance requirements. The same production infrastructure that supplies Mingfa-labeled products to over 70 countries is available for your custom project — whether you need a modified standard product or a wholly new formulation.
Density: 170-900 kg/m³
From ultra-light (170 kg/m³ for maximum thermal resistance) to high-density structural grades (900 kg/m³ with ≥13 MPa compressive strength). Any target density within this range is achievable, with tolerance as tight as ±5% for custom orders.
Temperature: 650-1100°C
Three temperature classes: 650°C (standard pipe sections), 1000°C (LG-Standard board), and 1100°C (LG-High Temp). Formulation adjustments allow intermediate grades optimized for your specific continuous operating temperature.
Full Parameter Control
Beyond density and temperature: thermal conductivity curve, compressive/flexural strength, chemical composition (including low-Fe&sub2;O&sub3; grades for glass contact), surface finish, edge profile, and packaging. Every variable is adjustable to your specification.
2. CNC Machining Services
Mingfa's in-house CNC machining capability transforms standard calcium silicate boards into precision-engineered CNC machined calcium silicate components. Computer-controlled routing and milling deliver consistent dimensional accuracy across production runs — eliminating the variability and waste of on-site cutting.
2D & 3D Profile Machining
Complex 2D outlines (burner quarls, sight tubes, access openings) and 3D surface profiles (tapered wedges, stepped thickness transitions, contoured faces) are routed from CAD drawings. Dimensional tolerance is ±1mm for standard profiles and ±0.5mm for critical dimensions by prior arrangement.
Curved Segments & Arc Profiles
For cylindrical furnace shells, kiln nose rings, and vessel walls, individual curved segments are machined to match the shell radius. Segments are numbered for installation sequence and supplied as matched sets. Radii from 200mm to 6000mm are routinely produced.
Pipe Half-Shells & Fittings
Precision-machined half-shells for pipe elbows, tees, reducers, and valve body insulation. CNC routing produces the internal bore profile and external contour in a single setup. Standard pipe sizes from DN15 to DN600 are accommodated.
Complex Geometries
Multi-step profiles, dovetail joints, tongue-and-groove edges, beveled perimeters, countersunk mounting holes, and component interlocking features. Any geometry achievable within the CNC work envelope of 1220 x 2440mm is produced to your CAD file.
3. OEM/ODM Development Process
Every custom project follows a structured five-stage development process. This ensures that expectations are aligned at each step and that the delivered product matches the approved specification.
Feasibility Review
You submit requirements: target density, temperature rating, dimensions, and any special requirements. Mingfa's technical team assesses feasibility against existing formulations and manufacturing capabilities. Response within 3-5 working days with a feasibility confirmation and rough cost estimate.
Prototype Development
For ODM projects requiring new formulation work, the in-house R&D lab produces lab-scale samples. Raw material ratios, autoclave parameters, and fiber reinforcement levels are adjusted. Lab samples are tested for density, strength, conductivity, and shrinkage. Results are shared with you. Typical duration: 2-4 weeks.
Customer Approval
Production trial samples (50-200 pieces) are manufactured on the standard production line and shipped to you for evaluation. You test against your application requirements: dimensional accuracy, thermal performance, cuttability, and compatibility with your installation methods. Feedback is incorporated before finalization.
Trial Production
A limited production run validates the process at commercial scale. The trial run uses the same raw materials, autoclave, drying, and finishing lines as full production. This confirms batch-to-batch consistency before entering mass production. Duration: 1-2 weeks.
Mass Production
Specification finalized with a formal product data sheet. Commercial production begins with standard lead time of 20-30 days. Batch-specific test certificates accompany every shipment. Ongoing consistency is maintained through documented acceptance criteria in the supply agreement.
4. Quality Assurance for Custom Parts
Custom parts undergo the same four-stage quality control system as Mingfa's standard products, plus additional checks specific to engineered components.
Batch Certificates
Every custom production batch ships with a Certificate of Analysis documenting: density (per ASTM C302), compressive strength (per ASTM C165), thermal conductivity (per ASTM C518), linear shrinkage at rated temperature (per ASTM C356), and moisture content. Retained samples are kept for 24 months for full traceability.
Dimensional Inspection
CNC-machined parts are inspected against the customer CAD file. First-article inspection (FAI) compares every critical dimension on the first piece of a production run. In-process inspection samples at defined intervals throughout the run. Final inspection verifies a statistically valid sample before packing.
Material Testing
Standard tests: density, compressive strength, flexural strength, thermal conductivity, linear shrinkage. Available on request: chemical composition via XRF, crystalline phase verification via XRD, thermal expansion coefficient, water-soluble chloride content, and hot modulus of rupture. All testing follows ASTM or EN methods.
Visual & Surface Inspection
Every part is visually inspected for surface defects, edge integrity, and color consistency. Surface finish is checked against the agreed specification (sanded both faces, single-face sanding, textured, or as-machined). Parts failing visual inspection are rejected before packing.
5. Application Examples
The following are typical custom calcium silicate shaped parts that Mingfa manufactures routinely. If your application is not listed, contact our engineering team — these examples represent a fraction of what our CNC and formulation capabilities can produce.
Furnace Lining Segments
Curved shell segments machined to the furnace radius, with cutouts for burner blocks, thermocouple penetrations, and sight tubes. Supplied as numbered installation sets matching the construction drawing sequence. Standard density 230-270 kg/m³ at 1000-1100°C rating.
Custom Pipe Fittings
Elbow half-shells, reducer segments, tee junction blocks, and flange insulation covers machined to match the exact pipe OD and fitting geometry. Standard density 170-250 kg/m³ for pipe services up to 650°C.
Customer-Specific Grades
Modified formulations for specific environments: low-Fe&sub2;O&sub3; grades for glass contact (prevents iron migration discoloration), infrared-masking additives for reduced radiative heat transfer, enhanced chemical resistance for aluminum smelting cryolite environments, and custom CaO/SiO&sub2; ratios for specific phase stability requirements.
Refractory Shapes
Arch bricks for furnace crown construction, tapered bricks for curved wall sections, radial bricks for dome and arch applications, and peephole blocks with integral sight tubes. Standard density 300-900 kg/m³ across MFBL, MFDJ, MFGB, and HCS series.
6. IP Protection & Confidentiality
Mingfa treats customer-specific developments as proprietary. With 14 national patents on core technologies, the company understands the value of intellectual property and extends the same discipline to customer projects.
NDA Available
A Non-Disclosure Agreement can be executed before any technical discussion. This covers all information exchanged during feasibility assessment, formulation development, and production.
Customer-Owned Tooling
Custom molds, jigs, fixtures, and CNC programs developed for your project remain your property. They are not used for any other customer. Upon project conclusion, tooling is either returned, stored under your name, or destroyed per your instructions.
Formulation Exclusivity
A custom formulation developed for your application will not be offered to any other customer and will not appear in Mingfa's standard catalog without your written consent. This exclusivity is formalized in the supply agreement.
7. How to Start an OEM Project
To prepare an accurate quotation, Mingfa's technical team needs the following information. The more complete your submission, the faster the response.
Information Needed
- Drawings: 2D/3D CAD files (STEP, DXF, DWG, or PDF with dimensions)
- Temperature: Continuous and peak operating temperature at the insulation hot face
- Density: Target density range, or let us recommend based on your mechanical and thermal requirements
- Quantity: Estimated annual volume and initial order quantity
- Timeline: Required delivery date or project schedule milestones
- Special Requirements: Low iron, IR masking, specific surface finish, chemical composition constraints, packaging
Typical Project Parameters
- MOQ for custom shapes: 1 m³ minimum (approximately 20-40 pieces for typical board dimensions)
- CNC machining MOQ: 50 pieces per design; lower quantities at higher unit cost
- Lead time: 20-30 days from order confirmation to shipment (standard production)
- Expedited lead time: 10-15 days available for urgent requirements (surcharge applies)
- Tooling cost: Custom molds and CNC programming quoted separately; amortized over production volume
- Sample policy: A4-sized sample pieces for material evaluation at no charge; production trial samples at cost