Engineered to Outperform Lewis®—Fully Compatible, Acid-Proof EMAIL: info@chempumps.cn
Industrial Pump Experts for Coal Chemical, Nonferrous, Petrochemical & Sulfur–Phosphorus Industries
About Us
Founded in 1998 in the China Pilot Free Trade Zone, our company is a national “Little Giant” and certified High-Tech Enterprise. With nearly 30 years in special-purpose pump technology, we serve petrochemicals, non-ferrous metallurgy, sulfur-phosphorus chemicals, and coal-chemical industries.
We focus on high-performance pumps across three segments: custom intelligent pumps, energy-saving systems, and intelligent O&M services—providing end-to-end solutions for high-temperature, high-pressure, corrosive, and abrasive processes.
Our advanced alloy pumps handle sulfuric acid, oleum, molten sulfur, and phosphoric acid. Our sulfuric acid pumps for 92–100% H₂SO₄ and ≥105% oleum are proven, fully compatible Lewis pump replacements.
Committed to world-class domestic innovation, we partner with clients in 30+ countries, delivering reliable, high-end industrial pumping solutions.
Intelligent Management System for Sulfuric Acid Metering Pumps
Based on technologies such as the Internet of Things (IoT), big data, and artificial intelligence (AI), a comprehensive full-lifecycle intelligent management system for rotating equipment, including Sulfuric Acid Metering Pumps, is provided. The system covers the entire plant with intelligent sensing, early warning, predictive analysis, and energy efficiency evaluation, ensuring safe, efficient, and optimized operation of critical industrial equipment.
Various failure models of rotating equipment, including physical models, mathematical models, empirical models, and calibration models, are established and continuously optimized using AI algorithms. By integrating AI-driven big data, intelligent diagnostic analysis, optimization control, and smart management, the platform enables precise monitoring and predictive maintenance not only for general rotating machinery but also for Sulfuric Acid Metering Pumps, which require high-precision handling and corrosion-resistant performance.
Ultimately, this system forms a truly interconnected industrial equipment cloud platform, allowing real-time analysis, predictive fault detection, and operational optimization. It ensures that critical devices such as Sulfuric Acid Metering Pumps operate safely, efficiently, and continuously, maximizing plant productivity and extending equipment service life.
Pump Material Advantages
| Serial No. | Material Designation | Hardness | Feature | Application Scope |
| B-1 | Nickel-added alloy ductile iron
| HB 300~380 | High-strength, corrosion-resistant nickel-added alloy ductile iron. Corrosion resistance superior to JSB-2. | Used to produce JHB series pump shaft. |
| B-2 | Alloy ductile iron
| HB 250~350 | Corrosion-resistant alloy ductile iron, corrosion rate 0.05–0.2 mm/a in 93–98% sulfuric acid at 110°C. | Used to produce JHB series pump casing, cover, elbow pipe, connecting pipe and outlet pipe. |
| B-11 | Lewmet1# (Lewmet® ) | HRC 42~52 | High-alloyed special corrosion-resistant NiCr alloy for high-temperature dilute sulfuric acid, concentrated sulfuric acid, oleum, phosphoric acid. | Used to produce JHB450-30 pump shaft sleeve, bushing, JHB1300-28 seal ring. |
| B-12 | Lewmet2# (904) (Lewmet® ) | HRC 35~42 | High-alloyed special corrosion-resistant NiCr alloy, corrosion resistance close to JSB-11. Hardness 35–42 after aging. | Used to produce shaft sleeve, bushing for JHB450-30, seal ring below JHB1300-28 and above JHB600-30. |
| B-13 | Lewmet3# (Lewmet® ) | HRC 20~26 | High-alloyed special corrosion-resistant NiCr alloy. Corrosion rate 0.025 mm/a at 104°C; less than 0.1 mm/a at 120°C. | Used to produce pump impeller, impeller nut; seal ring below JHB600-35; or custom pump materials. |
Certifications & Standards
Our pumps have obtained numerous globally recognized certifications, including CE (EU) certification and API Spec Q1 (international petroleum industry certification). Adhering strictly to the highest international standards, our products fully meet compliance, safety, and reliability requirements, satisfying the entry requirements of various global markets. They are suitable for demanding operating conditions in the petroleum, chemical, and energy sectors, providing customers with reliable pump solutions.
Global service coverage areas
We are a professional pump manufacturer with business covering more than 30 countries and regions worldwide, extending to core markets in Asia, Africa, Europe, and the Americas. Leveraging stable and reliable product performance and a comprehensive global service network, we provide customized pump solutions for customers in the industrial, municipal, energy, and water sectors globally. With localized response and end-to-end quality assurance, we help customers achieve efficient and stable fluid transport needs.
Global service coverage areas
We are a professional pump manufacturer with business covering more than 30 countries and regions worldwide, extending to core markets in Asia, Africa, Europe, and the Americas. Leveraging stable and reliable product performance and a comprehensive global service network, we provide customized pump solutions for customers in the industrial, municipal, energy, and water sectors globally. With localized response and end-to-end quality assurance, we help customers achieve efficient and stable fluid transport needs.
We deliver the best value for your investment through optimized production, cutting costs by up to 30%, leveraging economies of scale.
Our robust supply chain ensures consistent product availability with a 99.8% fulfillment rate, even during market fluctuations.
Our products undergo strict quality control and hold ISO 9001 and CE certifications to meet international standards.
Our customer service team, rated 9.5/10 for satisfaction, is committed to providing outstanding support from inquiries to after-sales care.
We collaborate closely with you to craft strategies that have historically increased our partners’ business growth by an average of 20% annually.
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Pristine Air Filter Production Facilities
Explore our state-of-the-art cleanroom facilities, specifically designed for optimal air filter production.
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Expert Air Filter Manufacturing Team
Our skilled professionals adhere to the highest standards, ensuring quality and precision in every air purifier we produce.
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Spacious and Organized Air Filter Storage
We boast extensive and well-organized storage capacities to ensure prompt delivery of all our air filtration solutions.
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