Professional Sand CastingManufacturer
Leading Chinese manufacturer specializing in precision casting for gas metering, water metering and industrial pipeline applications. 95 skilled workers, advanced equipment, guaranteed quality.
Wannuobaotong Factory
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Precision Cast Components
From gas meter inner valves to industrial pipeline valve components, we provide high-quality castings made to your specifications.
Gas Meter Inner Valve
Precision castings for smart gas meter inner motor valves, including screw valves, fast-closing valves, ball valves and gate valves.
Learn MoreIndustrial Mechanical Parts
Large castings for industrial pipeline valves, pumps and instrument equipment.
Learn MoreElectrical Fittings
Reliable electrical fittings and components for power distribution and electrical systems.
Learn MoreState-of-the-Art Factory
Advanced equipment and skilled workforce ensuring precision and quality in every casting.
Advanced Casting
Gravity casting and auto pouring robots for precision production
CNC Machining
Complete CNC workshop for secondary processing
Quality Assurance
X-ray inspection, CMM, spectrometer for comprehensive testing
Custom Solutions
tailored to your specific requirements
15 Years of Precision Casting Excellence
Founded in 2009, Ningbo Wannuobaotong Electromechanical Manufacturing Co., Ltd. has grown to become a trusted manufacturer of sand cast components in China. Our 15+ years of experience have taught us that quality and reliability are the foundation of lasting partnerships.
Located in Shangqiao Industrial Area, Xiwu Town, Fenghua, Ningbo, our 95 skilled employees work with advanced equipment including auto pouring robots, CNC machining centers, and comprehensive testing facilities.
We serve clients worldwide, providing custom casting solutions for smart gas meters, water meters and industrial piping equipment. Our commitment to quality is backed by ISO 9001:2015 certification.
Frequently Asked Questions
Find answers to common questions about our products, services, and capabilities.
What is your minimum order quantity?+
Our minimum order quantity varies by product type and complexity. Generally, we start with orders of 100+ pieces for standard parts. For custom specifications, please contact us to discuss your requirements.
What casting processes do you offer?+
We specialize in gravity casting and offer auto pouring capabilities. Our processes include sand casting, gravity casting, and we have advanced equipment for high-precision requirements.
Do you provide samples?+
Yes, we can provide samples for your evaluation. Sample costs and lead times vary depending on the complexity of the part. Contact us to discuss your sample requirements.
What quality certifications do you have?+
We are ISO 9001:2015 certified. Our factory also holds CE certification, meeting European market requirements.
What are your production lead times?+
Standard production lead times range from 4-8 weeks depending on order size and complexity. We also offer expedited services for urgent requirements.
Industry Insights
Stay updated with the latest trends, technologies, and news from Wannuobaotong.
The Evolution of Sand Casting Technology
Exploring modern advancements in sand casting processes and their impact on manufacturing quality.
Read MoreQuality Control in Precision Casting
How advanced inspection methods ensure reliability in critical auto components.
Read MoreSustainable Manufacturing Practices
Our commitment to environmentally responsible casting production methods.
Read MoreReady to Start Your Project?
Contact us today for a free consultation and quote. Our team is ready to help with your casting requirements.