Non-standard Precision Castings of Stainless Steel | Custom High-Precision Components for Multiple Industries
With over 10 years of experience as an integrated manufacturer and exporter specializing in cast components, we focus on the R&D and production of non-standard precision castings of stainless steel, while also providing high-quality cast iron parts. Our products are engineered to meet the strict precision and performance requirements of global customers, widely applied in machinery manufacturing, chemical engineering, medical equipment, and food processing industries. Backed by a professional technical team, robust production capacity, and rigorous quality management system, we offer one-stop custom solutions—from technical communication and drawing optimization to global delivery—committed to becoming a reliable partner for international B2B clients.
Product Overview: Non-standard Precision Castings of Stainless Steel
Our non-standard precision castings of stainless steel are customized components tailored to customers' unique specifications, serving as core parts in various industrial equipment. Leveraging advanced precision casting technology, these castings feature exceptional dimensional accuracy, superior surface finish, and excellent mechanical properties such as high corrosion resistance, wear resistance, and high-temperature resistance. Whether it's small-batch complex components or large-volume precision parts, we can achieve customized production based on customers' drawings, samples, or technical requirements. Meanwhile, our cast iron products (including gray cast iron, ductile iron) complement the stainless steel castings, forming a comprehensive product system to meet diverse industrial needs.
Production Processes & Workflow
We adhere to a scientific and visualized production process to ensure the quality and precision of each non-standard casting. The core production process for stainless steel precision castings includes:
1. Technical Communication & Design Optimization: Our professional engineers conduct in-depth communication with customers to clarify non-standard parameters (dimensions, tolerance, working environment, performance requirements). Using CAD/CAM/CAE software, we perform 3D modeling and process simulation to optimize product structure, improve casting feasibility, and reduce production risks.
2. Raw Material Selection & Inspection: Strictly select high-quality stainless steel materials (304, 316, 316L, 2205 duplex stainless steel) and cast iron materials (HT150, HT200, HT250, QT400-18, QT450-10) from well-known suppliers. Conduct comprehensive raw material testing, including chemical composition analysis and mechanical property detection, to ensure material qualification and stability.
3. Mold Making: For non-standard precision castings, we adopt investment casting (lost wax casting) as the core mold-making method, which enables finer surface finish and higher dimensional accuracy. For large-size non-standard parts, we use resin sand mold casting technology. The mold production is completed by CNC machining centers to ensure mold precision and repeatability, laying a solid foundation for subsequent casting.
4. Precision Casting: For stainless steel materials, we implement vacuum investment casting to avoid oxidation and porosity defects during the casting process. For cast iron parts, sand casting with advanced sand treatment technology is adopted to ensure casting compactness. The entire casting process is monitored by intelligent temperature and pressure control systems to achieve stable process parameters.
5. Post-casting Processing: After casting, the parts go through processes such as shell removal, sand cleaning, and gate cutting. Then, precision machining is carried out using CNC lathes, milling machines, and grinding machines to meet the final dimensional tolerance requirements. For parts with special requirements, we also perform heat treatment (quenching, tempering, annealing) to adjust mechanical properties.
6. Surface Treatment: Provide diversified surface treatment options according to product application scenarios, including polishing, passivation, shot blasting, electroplating, and anti-corrosion painting. These treatments not only enhance the appearance quality of the castings but also further improve their corrosion resistance and service life.
7. Full-process Quality Inspection: Implement strict quality control throughout the production process. Key inspection links include dimensional inspection (using Coordinate Measuring Machine, CMM), surface defect detection (ultrasonic testing, X-ray testing), and mechanical property testing. Only products that pass all inspections can be delivered to customers.
In addition to the above core processes, we also master other advanced casting technologies such as die casting and centrifugal casting, which can be flexibly applied to different material (stainless steel, cast iron) and structural requirements, providing more options for customers' non-standard customization.
Product Classification & Technical Parameters
3D Classification Table (Industry / Material / Part Type)
Industry | Material | Part Type | Key Features | Remarks |
Machinery Manufacturing | 304 Stainless Steel / QT450-10 Ductile Iron | Non-standard Gear Housings, Precision Shafts, Connecting Rods | High precision, strong load-bearing capacity, wear-resistant | Customizable according to equipment model and working conditions |
Chemical Engineering | 316L Stainless Steel / HT250 Gray Cast Iron | Corrosion-resistant Pipes, Valves, Pump Bodies | Excellent corrosion resistance to acid and alkali, high-temperature resistance | Meet chemical industry harsh environment requirements |
Medical Equipment | 316L Stainless Steel | Precision Medical Instrument Components, Sterilizer Parts | Sterile surface, high precision, biocompatibility | Comply with medical device quality standards (ISO 13485) |
Food Processing | 304 Stainless Steel | Non-standard Conveyor Components, Mixer Parts | Food-grade, easy to clean, corrosion-resistant | Meet FDA food contact material certification requirements |
Technical Parameter Table
Parameter Item | Specification |
Machining Precision | ±0.05mm (for key dimensions), ISO 8062 Grade H8; Investment casting surface roughness Ra≤1.6μm |
Material Range | Stainless Steel: 304, 316, 316L, 2205, 310S; Cast Iron: HT150, HT200, HT250, HT300, QT400-18, QT450-10, QT500-7, QT600-3 |
Surface Treatment Options | Polishing (Ra≤0.8μm), Passivation, Shot Blasting (SA2.5 standard), Electroplating, Epoxy Painting, Powder Coating |
Minimum/Maximum Dimensions | Minimum: 50mm × 30mm × 20mm; Maximum: 2000mm × 1500mm × 800mm |
Production Cycle | Small-batch non-standard products (≤500pcs): 15-25 working days; Large-volume products (>500pcs): 20-35 working days; Complex precision castings: 25-40 working days (depending on product complexity and mold development) |
Our Core Competitiveness
As an integrated manufacturer and exporter with over 10 years of experience in cast components, we have formed a comprehensive competitive advantage to provide high-quality services for global customers:
• Professional Technical Team: A team of 35+ professional engineers and technicians, with rich experience in non-standard precision casting design, process optimization, and quality control. We can provide professional technical guidance and drawing optimization suggestions for customers, ensuring the feasibility and cost-effectiveness of products.
• Strong Production Capacity: Our factory covers an area of 12,000 square meters, equipped with 50+ sets of advanced production and testing equipment (including CNC machining centers, CMM, ultrasonic testing machines). The annual production capacity of cast components reaches 50,000 tons, capable of meeting large-volume and urgent order requirements.
• Strict Quality Management System: Certified by ISO 9001:2015, CE, and ISO 13485 (for medical components), we implement full-process quality control with 12+ key inspection points. The qualified rate of products reaches 99.8%, ensuring that each product meets international quality standards.
• Perfect Supply Chain: We have established long-term and stable cooperative relationships with 10+ well-known raw material suppliers (stainless steel, cast iron), ensuring the stable supply and quality of raw materials. At the same time, we optimize the supply chain management to reduce production costs and improve delivery efficiency.
• Global Shipping Support: Cooperate with 5+ international logistics companies (Maersk, COSCO, MSC, etc.), providing flexible trade terms such as FOB, CIF. Our products have been exported to 150+ countries and regions around the world, with an on-time delivery rate of 99%.
• Comprehensive Quality Assurance Service: Provide a 12-month quality guarantee period for all products. we offer 24-hour technical consultation and lifelong after-sales maintenance guidance to solve customers' worries.
Common Casting Problems & Solutions
Common Problems | Causes | Solutions |
Porosity and shrinkage in castings | Insufficient degassing during melting, improper casting temperature, unreasonable gating system design | Adopt vacuum melting and degassing technology; strictly control casting temperature and pouring speed; optimize gating system design through simulation to ensure smooth molten metal flow and complete filling |
Dimensional deviation exceeding tolerance | Mold deformation, uneven cooling during casting, machining errors | Use high-temperature resistant and stable mold materials; adopt gradient cooling technology to ensure uniform cooling of castings; use CMM for full-dimensional inspection after machining, and set up secondary correction procedures for key dimensions |
Poor surface finish of castings | Rough mold surface, residual sand on casting surface, improper surface treatment | Polish the mold inner surface to improve smoothness; strengthen sand cleaning process (shot blasting + manual cleaning); optimize surface treatment parameters, such as increasing polishing time for precision parts |
Insufficient corrosion resistance of stainless steel castings | Impure stainless steel material, incomplete passivation, improper material selection | Strictly inspect raw material composition to ensure compliance with standard requirements; optimize passivation process (extend passivation time, control passivation solution concentration); recommend appropriate stainless steel grades (such as 316L for strong corrosion environments) according to customer application scenarios |
Contact Us
If you need non-standard precision castings of stainless steel, cast iron parts, or have custom casting requirements, please feel free to contact us. You can send us your drawings, samples, or technical specifications, and our professional team will reply to you within 24 hours, providing detailed technical solutions and quotation. We look forward to establishing long-term and stable cooperative relationships with you and creating win-win results together!
