Pump Manufacturing

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In order to help global customers better understand our products, we are committed to providing you with detailed product information to help you choose the products that meet your needs.

Advantages

Pump products typically require high casting precision and material properties, and Leierwoโ€™s expertise in pump casting is particularly prominent. The companyโ€™s extensive application in pump and valve accessories demonstrates its mastery of the casting process for key components such as pump bodies, impellers, and sleeves. Precision casting technology effectively controls the uniformity of casting wall thickness and internal cavity accuracy, reducing subsequent processing and improving overall efficiency. Furthermore, the company can recommend the most appropriate casting process based on component structure to further optimize the performance of pump products and meet the corrosion resistance, heat resistance, and fluid dynamics requirements of various industries.
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Main Material Selection

In Pump Manufacturing, castings are exposed to liquid media for extended periods and often face challenges such as corrosion, wear, and cavitation. Therefore, materials must possess high corrosion and wear resistance, along with excellent casting properties to ensure long-term reliability and efficiency.

Common Materials Used in Pump Manufacturing

Stainless Steel Series:
316/316L: Preferred for pump casings, impellers, and shafts, resistant to acids, alkalis, and chloride ion corrosion.
2205 Duplex Steel: High strength and excellent pitting resistance, suitable for seawater pumps and chemical pumps.
304/304L: General-purpose pump components for water treatment and food industry pumps.

Carbon Steel Series:
1045: Suitable for pump shafts and casings in non-corrosive environments.
4130: Ideal for high-temperature, high-pressure pump structural components.

Special Alloy Series:
C95400 Bronze: Perfect for seawater pump sleeves and sliding components, offering excellent wear resistance and self-lubrication.
Cobalt Alloys (e.g., Co6): Used in impellers or sealing surfaces for high-wear, high-temperature pumps.

Key Casting Service Options in Pump Manufacturing

The fluid dynamics performance of pump components, such as impellers and pump bodies, depends on precise casting. Each Pump Manufacturing process targets specific component requirements:

Investment Casting: Ideal for complex flow path components. The impeller, as the heart of the pump, requires precise blade curves to meet fluid dynamics design. Investment casting achieves blade profile accuracy of ยฑ0.1mm and a surface finish of Ra3.2ยตm or better, reducing fluid resistance and improving efficiency.

Sand Casting: Used for fundamental components like pump bodies. Pump bodies are typically cylindrical or square; sand casting supports mass production with low cost, short cycle times, and meets structural and fluid flow requirements.

CNC Machining: Ensures transmission and sealing accuracy. The connection between pump shaft and impeller, as well as the sealing surface between pump body and end cover, requires CNC machining for concentricity โ‰ค0.01mm and precise flatness, preventing vibration and leakage during operation.
What We Offer
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Leierwo is committed to providing the highest quality precision metal parts manufacturing services, including precision casting, investment casting, sand casting, and CNC machining. We offer customized solutions and can complete your design within 3โ€“5 weeks, depending on the complexity of the parts. Before mass production, we provide one free sample for testing and approval.
Investment Casting Service
Features: Investment casting has high precision, can adapt to complex shapes, has smooth surface and little material waste.
Applications: aerospace, precision machinery, automobiles, medical equipment, etc.
Sand Casting Service
Features: It uses sand mold, which is low in cost and suitable for large and complex-shaped metal castings.
Applications: automotive parts, mechanical structural parts, large castings.
CNC Machining Services
Features: high precision, complex parts, and mass production.
Applications: molds, medical device parts, aluminum alloy engine cylinder blocks/cylinder heads.
Our Casting Services โ€“ Fufilled Across Metal Grades
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Leierwo possesses extensive expertise across a wide range of alloy grades, enabling our customers to select the ideal materials to optimize their products and meet the most demanding global application requirements. Feel free to explore the alloy series listed below to find the perfect match for your specific needs.
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings
We Provide Comprehensive Manufacturing Solutions
Investment Casting
Sand Casting
3D Printing
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings

Start Your Project with Leierwo

1. Submit Your Inquiry
Send your CAD drawings and 3D files via email, specifying material grade, order quantity, surface finish, or any other relevant details.
2. Cost Calculation
Once we receive your design, our engineering team will carefully evaluate the drawings and calculate the price based on actual production costs as soon as possible.
3. Start Production
Upon pricing approval, our production team will prepare the materials and schedule production promptly.Leierwo always ensures on-time delivery.
4. Arrange Delivery
After production is completed, we will provide packaging details and arrange shipment via sea or air. We support global shipping for every order.

FAQ

We are a factory with over 20 years of experience in casting and machining. We have rich expertise in this industry. If you come across suppliers claiming to produce castings in a wide range of materials (such as steel, iron, stainless steel, copper, etc.), they are likely trading companies. If you see workshops actively producing parts, you can be assured that we are a genuine manufacturer.

Yes, as long as we receive CAD files or compatible 3D models that can be viewed with software like First Quote or Firstcut browser, we can provide a quotation. Please note that 2D drawings alone are insufficient for manufacturing precision components.

We support 3D CAD models from SolidWorks (.sldprt), ProE (.prt), and other CAD systems, commonly in IGES (.igs), STEP (.stp), ACIS (.sat), or Parasolid (.sat) formats.

We have an internal service system that responds to emails within 4 hours. If your request is urgent, please specify it in your email so we can prioritize your inquiry.

For rapid prototyping:
Silica sol casting: 20โ€“30 days
Sand casting: 7โ€“10 days
For mass production with machining included, the typical lead time is 45โ€“60 days.
More complex parts may require a different delivery schedule.

Yes, we provide samples based on your drawings for you to confirm structure and quality. If the sample does not meet your requirements, we will replace it free of charge until it is qualified.

We accept T/T (bank transfer), Alipay, credit card, etc. Typically, we require a 30% down payment upon order confirmation and the remaining 70% before shipment. For custom parts with complex requirements, additional pricing terms may apply.

We have a comprehensive quality control system that covers every step, from raw material procurement to machining processes and final inspection. For critical components, we strictly follow drawing standards and customer specifications.

All customer data is kept confidential. Only trained engineers are authorized to handle production orders. Third-party inspection or factory audits are welcome, or you may use our in-house quality team for final inspection.

Yes, we guarantee that all materials used are 100% genuine and as specified.

We value long-term cooperation and support our customersโ€™ production needs.

We believe every honest customer is a friend, and we treat our partnerships sincerelyโ€”building friendships and strong teams regardless of where our customers come from.

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