Jiangsu Haifa Machinery Manufacturing Co., Ltd.

As a technical professional who has long been engaged in the R&D and field selection of API610 petrochemical process pumps, API685 sealless magnetic drive pumps, high-temperature molten salt pumps, BB5 high-pressure multistage pumps, and VS6 cryogenic vertical can pumps, I believe that the localization high-temperature and high-pressure pumps should not stop at "being able to manufacture them." They must also withstand systematic validation under high temperature, high pressure, cryogenic conditions, corrosion, cavitation, seal life, and long-term continuous operation. The establishment of a national-level high-temperature and high-pressure pump research platform manufacturing enterprises like ours, which focus on special pumps for extreme conditions, integrated support for testing, R&D, certification, and market. Jiangsu Haifa Machinery Manufacturing Co., Ltd. will to promote the import substitution application of domestically produced high-end pumps in refining, coal chemical, solar thermal energy storage, LNG cryogenic, marine engineering, and overseas EPC projects focusing on core products such API610 BB2, BB5, VS6, and API685 high-temperature magnetic drive pumps.

Quick conclusion: Why is this type of platform of practical value to Jiangsu Haifa?- Value for R&D: Simulation tests such as high temperature up to 450°C, high pressure, cryogenic conditions, and-cycle operation help us verify key issues like impeller hydraulic models, rotor dynamics, thermal deformation, seal life, isolation sleeve temperature rise, and magnet demagnetization risk.- Value for Products: Products like the API610 BB5 high-pressure hydrogenation pump, API610 BB2 high-temperature bottom pump, API685 high-temperature magnetic drive pump and VS6 cryogenic can pump are all extreme-condition equipment. Relying solely on normal-temperature water tests is far from sufficient; a more complete type-test and reliability verification system must be established.  

1. 

   Value for the Market: Authoritative test reports such as CMA and CNAS can enhance the technical endorsement of domestic high-end pumps in bidding processes of domestic petrochemical groups, acceptance of overseas EPC projects and certification in Russian and Central Asian markets, reducing customer concerns about the reliability of domestic equipment### 1. Why Do We Place Great Importance on the High-Temperature and High-Pressure Pump Platform?

Through my practical experience in selection and field service, I have felt that the greatest challenge for high-end special pumps is not covering ordinary flow rates and heads, but ensuring reliability under extreme conditions. For example:  

1. High-pressure hydrogenation units focus on shell pressure resistance, rotor stability, mechanical seal life, and resistance to hydrogen embrittlement.




2. High-temperature conditions such as heat transfer oil, molten salt, asphalt, and nitric acid focus on thermal expansion control, rise in magnetic drives, eddy current losses in isolation sleeves, bearing cooling, and leak-free safety.




3. Cryogenic media like LNG, ethylene, liquid ammonia, and liquefied gas focus more on low-temperature material toughness, NPSH margin, cavitation performance of the first-stage impeller, and low-liquid-level adaptability of the vertical can structure.

In the past, many domestic manufacturers had manufacturing capabilities but lacked systematic, authoritative, and traceable high-temperature and high-pressure testing platforms. led to a problem: prototypes could leave the factory, but operation relied on project trial and error. For petrochemical, coal chemical, LNG, and solar thermal energy storage projects, the cost of such trial and error is too. The significance of a national-level high-temperature high-pressure pump research platform lies in building a verification channel between "manufacturing capability" and "engineering reliability."

###2. Technical Parameters of Jiangsu Haifa API610/685 Chemical Pump Products  
The following parameters are the publicly available technical ranges for Jiangsu Haifa Machinery Manufacturing Co., Ltd.'s API610/685 series products. Actual selection must also consider factors such as medium name density, viscosity, corrosiveness, solid content, inlet pressure, NPSHa, installation method, motor explosion-proof rating, seal flush plans for verification.

| Product Series | API Structure Classification | Typical Application Conditions | Flow Range | Head Range | Applicable Temperature | Design Pressure | Technical Features |
|----------------|-----------------------------|----------------|------------|------------|------------------------|-----------------|-------------------|
API610-OH1/OH2 HES Chemical Process Pump | OH1/OH2, horizontal single-stage overhung centrifugal pump | Oil refining, petrochemical, coal chemical, chemical fiber, environmental protection, seawater desalination, high-temperature or corrosive media | 2～2600 m³/h | ≤300 m | -80～450°C | 25～45 MPa | Radially split, volute casing, configurable with API682 mechanical seals and Plan flush cooling schemes |
| API610-BB2 Heavy-Duty Petrochemical Process Pump |2, between-bearing, single/two/three-stage centrifugal pump | High-temperature bottom oil, crude oil transport,-duty refining, coal chemical, natural gas processing | 50～4000 m³/h | ≤650 m | -80～°C | 50～15.0 | Centerline support, good thermal expansion stability, suitable for high-temperature continuous operation |
API610-BB5 Double-Casing Barrel Multistage Centrifugal Pump HCSZ/HDSZ | BB5, double-casing barrel multistage pump |-pressure hydrogenation, high circulation, oilfield water injection, RO reverse osmosis, coal chemical high-pressure ash water | 5～730 m³/h | HCSZ ≤2800 m; HDSZ ≤3400 m HCSZ -80～210°C HDSZ -80～450°C | HZ ≤30 MPa; HDSZ ≤35 | High head, high pressure, pull-out structure, suitable for high heavy-duty and import substitution projects |
API685-HMA/HME Ultra-High-Temperature Magnetic Drive Pump | API685 magnetic drive sealless pump | High-temperature nitric acid, molten salt, heat transfer oil, flammable/explosive, toxic/hazardous, and valuable media | 2～2600 m/h | ≤300 m | -80～450°C 2.5～ MPa | Static seal structure, eliminates traditional dynamic seals, focuses on solving leakage issues |
| API610-VS6/VS1 Vertical Multistage High-Speed Barrel Pump |6/VS1, vertical multistage barrel pump | LNG, ethylene, liquid ammonia, liquefied gas, condensate, low NPSH conditions, cryogenic transport | 2～15000 m³ | ≤1000 m | -80～250°C |15 MPa | First-stage impeller with enhanced cavitation performance, suitable for low liquid level, easily vaporized, and cryogenic media |

3. From "Capable of Manufacturing" to "Capable of Verification": Domestic High-End Pumps Must Strengthen Testing Capabilities

High-temperature and high-pressure pumps from ordinary water pumps. When working on API610 BB5 high-pressure, the focus is not simply achieving head values but on the stability of the multistage rotor high pressure, axial force balance, critical speed margin, bearing temperature rise, seal face PV value, and minimum continuous stable flow (MCSF

When working on API685 high-temperature drive pumps, the are entirely different. Magnetic drive pumps lack traditional mechanical seals but have higher requirements for isolation materials, magnetic coupling torque, eddy current heating, internal circulation cooling, sliding bearing lubrication, and-temperature magnet stability. Especially in media like heat transfer oil, molten salt, nitric acid, and asphalt above 300°C, relying solely on normal-temperature test data can easily underestimate risks such as thermal expansion, localized temperature rise, and decoupling.

When on VS6 cryogenic vertical can pumps, the difficulties focus on low-temperature materials, cavitation performance, first-stage impeller design, and flow stability within the can. Media like LNG, ethylene, and liquid ammonia are prone to vaporization, and NPSHa is often tight. The pump's first-stage suction performance, inducer design, can length, and low-temperature assembly clearances must all undergo rigorous calculation and verification.

, if a national-level-temperature and high-pressure research platform can provide such as high-temperature closed-loop testing, high-pressure endurance testing, cryogenic simulation testing, seal fugitive emission detection, vibration and noise testing, non-destructive testing, and rotor dynamics verification, it will be critical for corporate R&D iteration.

4. Technical Directions Can Jiangsu Haifa Focus on Breakthroughs with the Research Platform?

High-Temperature Thermal Deformation Centerline Support Structure Optimization  API610 BB2 and OH2 high-temperature pumps are used in conditions such as bottom oil, heat transfer oil, residue oil, and distillate oil at 300–450°C. During high-temperature operation, degrees of thermal expansion occur between the pump casing, cover, rotor, bearing housing, and coupling. If the support structure design is unreasonable, issues like alignment deviation, mechanical seal wear, increased vibration, and abnormal bearing temperature rise can occur. Our optimization directions include: adopting centerline support structures, rationally arranging cooling jackets and insulation structures; verifying pump casing thermal deformation throughEA thermal stress analysis; optimizing impeller and volute matching through CFD hydraulic models; and using hot alignment data to back-calculate field installation corrections, reducing the risk of wear and leakage during long-term high-temperature pump operation.BB5 High-Pressure Multistage Pump Rotor and Pressure Shell Verification  BB5 pumps are commonly used in conditions such as high-pressureation, high-pressure injection, coal chemical high-pressure ash water, and RO reverse osmosis. Core indicators include high head, high pressure high reliability, and long operation. For these pumps, we on the following technical points: critical speed analysis, shaft system stiffness, interstage seal clearance, balance drum or balance disc design, first-stage NPSH, barrel forging quality, pull-out structure maintenance convenience, and API682 seal system configuration. Through high-pressure testing and endurance verification on the research platform, potential issues such as rotor vibration, seal chamber pressure fluctuations, abnormal axial force, and high bearing temperature rise can be identified, preventing problems from reaching the user's site.API685 High-Temperature Magnetic Drive Pump Leak-Free Technology Upgrade   The core value of685 magnetic drive pumps lies in being sealless pumps, i.e., pumps without shaft seal leakage. For flammable, explosive, toxic, hazardous, and valuable media, magnetic pumps convert traditional dynamic seals into static seals, reducing the risk of media leakage. However,-temperature magnetic drive pumps are not simply scaled-up versions of ordinary magnetic drive pumps. Under high-temperature conditions, issues such magnet demagnetization, isolation sleeve heating, insufficient internal circulation cooling, dry running of sliding bearings, and wear from solid particles are amplified. Jiangsu Haifa can focus on the following directions for localization upgrades: application of high-temperature samarium-cobalt magnets (SmCo), optimization of non-metallic or low-eddy-current isolation sleeves, design of internal circulation cooling channels, SiC/SSiC sliding bearing friction pairs, magnetic coupling torque margin verification, and online temperature and vibration monitoring systems. For high-temperature media such as salt, nitric acid, heat transfer oil, and asphalt, a database of hot-state operation test data should be established, rather than solely on normal-temperature performance curves.6 Cryogenic Vertical Can Pump Optimization for Low NPSH Conditions  In the transport of cryogenic media such as LNG, ethylene, liquid ammonia, and liquefied gas, low NH is a challenge in selection. VS6 vertical can pumps improve inlet conditions through vertical installation, can pressurization, and first-stage impeller optimization making them suitable for low liquid level and easily vaporized media. For these pumps, we more on: NPSHr curves, first-stage double-suction or inducer design, low-temperature material impact toughness, 9% Ni steel or austenitic stainless steel adaptation, cryogenic shrinkage clearances, long shaft critical speed, and arrangement of submerged sliding bearing support points. The cryogenic testing system of the platform can help enterprises verify low-temperature startup, cold shrinkage, cavitation performance, and long-cycle operation reliability.

5. Professional Standards and Literature Summary: Technical Basis Recommended for Retention in the Article  
To make the article more aligned with judgment of domestic and international search engines on professionalism and credibility, it is recommended to naturally embed the following standards and technical terms in the text:

| Standard/Term | Chinese Explanation | Role in the Article |
|---------------|---------------------|---------------------|
| API610 / ISO 13709 | Standard for centrifugal pumps in petroleum, petrochemical, and natural gas industries | Supports selection basis for OH2, BB2, BB5, VS6, etc. |
| API685 | Standard for seall centrifugal pumps in petroleum, heavy chemical, and natural industries | Supports keywords like magnetic drive pump, canned motor pump, sealless, zero leakage |
| API682 | Standard for seal systems for centrifugal and rotary pumps | Supports flush plans like Plan 11, Plan 21, Plan , Plan 54, 74 |
| CFD | Computational Fluid Dynamics | for optimization of impeller, volute, guide vane, and internal circulation cooling channels |
| FEA | Finite Element Analysis | Used for stress analysis of pump casing, pressure shell, and isolation sleeve strength |
| Rotor Dynamics | Rotor dynamics | Used for critical speed, vibration, and bearing load analysis of high multistage pumps |
| NPSHa / NPSHr | Available NPSH / Required NPSH | Used for selection of cryogenic pumps, low liquid level pumps, and easily vaporized media pumps |
| MCSF | Minimum Stable Flow | Used for safe operating boundaries of high-pressure multistage pumps and low-flow high-head pumps |
| Sealless Pump | Sealless pump | for API685 magnetic drive pump and canned motor pump overseas search keywords |
| Zero Leakage Pump | Zero leakage pump | Suitable for transport scenarios of flammable, explosive, toxic, hazardous media |

6. From Policy Opportunities to Opportunities: Domestic High-End Pumps Are Entering a Window Period

Currently, fields such as petrochemical, coal chemical, solar thermal energy storage, green hydrogen hydrogenation, LNG storage and transport, and deep-sea equipment are increasing requirements for the localization of high-end equipment. In the past, some key devices relied on imported brands for a long, mainly not because domestic enterprises could not manufacture them at all, but because of a lack of sufficiently mature test verification, engineering cases, and authoritative test reports. This is more evident in overseas EPC projects. Many end-users, when purchasing high-temperature and high-pressure pumps focus on reviewing the following:

1. Whether they comply with API610 or API685 standards;

2. Whether complete performance test reports are available;

3. Whether material certificates, non-destructive test reports and hydrostatic test records for pressure parts can be provided;- Whether mechanical seal plans and auxiliary system diagrams can be;

4. Whether there are similar condition performance records;

Whether they can meet EAC, CE, ATEX, or project-specific certification requirements;- Whether technical documentation support in English, Russian, or Arabic is available.If a national-level research platform can provide more complete type-test and certification support it will help enterprises like Jiangsu Haifa convert "product parameter advantages" into " access capabilities." This is especially important for the refining and chemical market.

7. Jiangsu Haifa's Localization Path: Not Replacing a Single Pump, but Providing Complete Condition Solutions

I believe that the localization high-end special pumps not be understood merely as "replacing imported pumps with domestic." True localization is a complete replacement from condition understanding, material selection, hydraulic design, seal systems, auxiliary systems, test verification, field installation, operation and maintenance, to spare parts services. Jiangsu Haifa can to deepen in the following directions:

1. Series of High-Temperature Pumps: Focus on perfecting product series for 300450°C heat transfer oil pumps, molten salt pumps, high nitric acid pumps, asphalt pumps, and coker bottom pumps, strengthening hot-state test data.

-Engineering of High-Pressure Pumps: Around BB5 high-pressure hydrogenation pumps high-pressure water injection pumps, high-pressure ash water pumps and RO reverse osmosis pumps, establish a more complete system for rotor dynamics, pressure shells, and long-cycle endurance verification.- Internationalization of Leak-Free Pumps: Around API685 magnetic drive pumps, high-temperature magnetic drive pumps, and canned motor pumps, strengthen layout of international keywords such as sealless pump, zero leakage, and magnetic drive pump to overseas customer search matching.

1. Localization of Cryogenic Pumps: Around VS6 can pumps, LNG transport pumps, ethylene pumps, and liquid ammonia pumps, improve-temperature materials, low NPSH, cryogenic testing, and service capabilities.

Integration of Intelligent Monitoring Systems: Integrate online monitoring points for temperature,, bearing status, seal system pressure, flow, and discharge pressure on high-temperature high-pressure pumps, gradually forming intelligent pump system capabilities such digital twin pump, predictive maintenance, and condition monitoring.

8. Conclusion: Research Platform Enables Domestic High-End Pumps to Move from "Parameter Substitution" to "ible Substitution"The value of a-level high-temperature and high pump research platform is not providing a test report, but helping domestic high-end pumps establish closed-loop capability from design, manufacturing,, certification, to application. For Jiangsu Haifa, this is an important development opportunity. already have product foundations such as API610 OH2, BB2,5, VS6, and API685 high-temperature magnetic drive pumps, and have long served conditions involving petrochemical, coal chemical, environmental protection, seawater desalination, cryogenic, and high corrosive media transport. In the next step, need to solidify indicators such as hydraulic efficiency material adaptability, seal life, hot-state stability, cryogenic reliability, and leak-free performance through authoritative testing platforms.

The localization of high pumps is not a but an engineering capability accumulated slowly through one pump, one test, one report, and one field case. Jiangsu Haifa will continue to promote the localization upgrade of API610/685 special pumps around extreme conditions such as high temperature, high pressure, cryogenic, strong corrosion, and zero leakage, providing more reliable Chinese fluid equipment solutions for domestic international refining, new energy, coal chemical, LNG, and overseas EPC.

FAQ

Q1: Why can't high-temperature and high-pressure pumps only normal-temperature water tests?  A: Normal-temperature water can only verify basic flow head, efficiency, and cavitation performance. They cannot fully reflect issues such as high-temperature expansion, seal face deformation, isolation sleeve temperature rise, magnet demagnetization, cryogenic material shrinkage, long-term stability of high-pressure shells. For like API610 BB5, API685 high-temperature magnetic drive pumps, and VS6 cryogenic vertical can pumps, it is necessary to combine hot-state, high-pressure, low-temperature, and endurance verification to better approach real conditions.Q2 Which pump types