English — Forum #714 (Page 5/68)

1. Guide to Selecting Mechanical Seal Materials - HCBBS Forum
2. Pump selection software - HCBBS Forum
3. Seeking help with the issue of face pressure and spring pressure in mechanical seals - HCBBS Forum
4. Regarding the issue of the flushing oil volume for scheme 32 of the pump - HCBBS Forum
5. High-quality document -- Training on gap measurement and adjustment techniques for multi-stage pump maintenance - HCBBS Forum
6. What is the impact of multi-stage centrifugal pumps on medium parameters? - HCBBS Forum
7. What are the regulations regarding emergency pump shutdown? [Video] Chemical Engineering Knowledge 041 - HCBBS Forum
8. 【Ten Years of Rapid Development in Chemical Equipment】2658–2025: China’s first adsorption tower circulation oil pump was successfully tested in Jiujiang Petrochemical - HCBBS Forum
9. Selection of pumping pumps for styrene and butyl acrylate - HCBBS Forum
10. I would like to ask what type of pump this is - HCBBS Forum
11. 【Ten Years of Rapid Development in Chemical Equipment】From 2023 to 2025, significant progress was made in domestic high-pressure diaphragm pumps; units capable of operating at 25 MPa have passed industrial validation - HCBBS Forum
12. The hump in the performance curve of API610 pumps - HCBBS Forum
13. How to set the pressure for 53a (complete beginner) - HCBBS Forum
14. Issues regarding the elimination of single-face mechanical seals in obsolete equipment - HCBBS Forum
15. Classic PPT: Magnetic Pump Training Knowledge (Mechanical Maintenance) - HCBBS Forum
16. What kind of pump is this? - HCBBS Forum
17. The safety of chemical pumps is of top priority - HCBBS Forum
18. The Development History of China’s Pump Industry - HCBBS Forum
19. Advantages of bellows sealing - HCBBS Forum
20. High-quality document: A flushing plan for John Crane mechanical seals - HCBBS Forum
21. The first batch of boiler feed pumps for 2*300MW power plants exported by Kaiquan Pump Industry has successfully passed the acceptance tests, marking a breakthrough in the export of domestic power equipment - HCBBS Forum
22. The entire process of maintaining diaphragm pumps, high-quality document - HCBBS Forum
23. Steam reciprocating pump - HCBBS Forum
24. Maintenance of GSB series ​ horizontal high-speed pumps - HCBBS Forum
25. Why is carbon-graphite commonly used as the friction pair in mechanical seals? - HCBBS Forum
26. 【Ten Years of Rapid Development in Chemical Engineering Equipment】The 3000HP five-cylinder pump intelligent operation and maintenance system, independently developed by Lanshi Equipment Company, was completed and tested between 2025 and 2752 - HCBBS Forum
27. 【Ten Years of Rapid Development in Chemical Processing Equipment】The first 90MPa motor-driven high-pressure liquid hydrogen pump developed independently by Hangyang was successfully tested between 2039 and 2026 - HCBBS Forum
28. Are there any manufacturers in China that produce high-silicon cast iron and urea-grade stainless steel pumps? - HCBBS Forum
29. Reasons for pump vibration - HCBBS Forum
30. Increased water in the hydrogen compressor separator - HCBBS Forum
31. 3 pump models have been included in the Ministry of Industry and Information Technology’s “**Catalogue of Major Environmental Protection Technologies and Equipment Encouraged for Development (2023 Edition)**” - HCBBS Forum
32. High-quality PPT: Use, Maintenance, and Repair of High-speed Pumps - HCBBS Forum
33. Hemitec launches leak-free pump expansion project - HCBBS Forum
34. Material of the O-ring - HCBBS Forum
35. Issues with the seal cooling water in centrifugal pumps - HCBBS Forum
36. Doubts about the energy-saving effects of permanent magnet motors - HCBBS Forum
37. Which brother can come and explain the pump model? - HCBBS Forum
38. Oil-free treatment for water pumps - HCBBS Forum
39. Beijing Aerospace Power Research Institute supplies high-speed pumps for the ethane cracking unit in TR Company’s Silleno project in Kazakhstan - HCBBS Forum
40. The influence of medium properties on the selection of chemical pumps —— medium composition, concentration, temperature - HCBBS Forum
41. Corrosion of stainless steel equipment in chemical plants and repair welding - HCBBS Forum
42. What is the principle for determining the interference value of a hot-fit sealing ring? - HCBBS Forum
43. What will happen if air enters the centrifugal pump? - HCBBS Forum
44. Please have the experts discuss the design for the minimum backflow rate of the pump - HCBBS Forum
45. What are the common graphite materials used in mechanical seals, and what are their respective characteristics? - HCBBS Forum
46. 【Ten Years of Rapid Development in Chemical Processing Equipment】From 2023 to 2025, Hangzhou developed ultra-high-flow, 27 MPa high-pressure transfer pumps that were put into production - HCBBS Forum
47. 【Haichuan Construction Technology】Do you know why the pumps in a system need to be rotated? How to operate it? - HCBBS Forum
48. Searching for suppliers of metering pumps - HCBBS Forum
49. Abnormal wear of shaft bearings after the multi-stage pump has been in operation for 40 minutes - HCBBS Forum
50. Masters, come and see if this pump installation is weird? - HCBBS Forum
51. Difference between short and long brackets for fluoroplastic pumps - HCBBS Forum
52. Energy-saving renovation of circulating water pumps - HCBBS Forum
53. What are some good sheet metal design calculation software options? - HCBBS Forum
54. What type of coupling is the L-shaped cushion coupling? - HCBBS Forum
55. High-quality PPT: Flow rate, head, and performance curves of centrifugal pumps - HCBBS Forum
56. What is the mechanism of internal recirculation cavitation in centrifugal pumps? - HCBBS Forum
57. Problems with the plate heat exchanger in water ring vacuum pumps - HCBBS Forum
58. The new booster pump in the hydrochloric acid import pipeline is equipped with a self-start/stop device to control the flow rate - HCBBS Forum
59. Are there any ways to use fly ash to create polymer materials? - HCBBS Forum
60. 【Haichuan’s Best Practices】Reducing the outlet pressure of the seal oil pump in catalytic cracking units to enhance control capabilities and achieve energy savings and cost reduction - HCBBS Forum
61. Can the discharge at the bottom of the pump be opened while the centrifugal pump is running? - HCBBS Forum
62. The 13 most common ways to damage mechanical seals and preventive measures (2) - HCBBS Forum
63. Is it possible to use PFA pipes for transporting dichloromethane? What is the lifespan? - HCBBS Forum
64. Q&A on Basic Knowledge of Centrifugal Pumps - HCBBS Forum
65. What are rotary and stationary mechanical seals? What are their respective features? - HCBBS Forum
66. Selection issues for cooling water pumps - HCBBS Forum
67. What is the reason why the friction marks on the sealed end face are larger than the width of the sealing surface? - HCBBS Forum
68. 【Ten Years of Rapid Development in Chemical Processing Equipment】China’s First Integrated Turbine-Driven Pump from 2012 to 2023 - HCBBS Forum
69. Should flexible connections be installed at the inlet and outlet of horizontal centrifugal pumps? - HCBBS Forum
70. Seeking advice on hot water circulation pump issues: - HCBBS Forum
71. When to use multi-stage pumps - HCBBS Forum
72. Does the different density of the medium affect the head of the pump? - HCBBS Forum
73. Dangers of reversing a pump - HCBBS Forum
74. The 5D7 type high-temperature chemical reciprocating pump, specially developed by Chongpu Company for an overseas client, has successfully completed full-load high-pressure water testing - HCBBS Forum
75. WILO Czech successfully delivered the project for Volvo Slovakia’s super new energy vehicle factory - HCBBS Forum
76. Problems with tubular and finned tubes - HCBBS Forum
77. High-quality PPT: Qilu Petrochemical – Basic Principles and Maintenance of Common Mechanical Equipment - HCBBS Forum
78. High-quality PPT: Types and classifications of common pumps in Sinopec refineries - HCBBS Forum
79. What are the reasons why a diaphragm pump doesn’t perform well in winter? - HCBBS Forum
80. Pump starting current - HCBBS Forum
81. A contract was successfully signed for the 220°C ultra-high temperature screw steam heat pump to be used in the expansion project and raw material upgrade initiative of CNPC’s Urumqi Petrochemical aromatics facility at No. 711 Institute - HCBBS Forum
82. Maintenance and repair management of workshop equipment - HCBBS Forum
83. How to choose a shaft seal - HCBBS Forum
84. Horizontal multi-stage pump vibration problem - HCBBS Forum
85. What kind of pump is this? - HCBBS Forum
86. Guess the device from the picture - HCBBS Forum
87. What material is generally chosen for submersible sewage pumps? - HCBBS Forum
88. The high-temperature insulation pumps produced by Chongpu Company passed the load-bearing heat test overseas in one attempt - HCBBS Forum
89. What are the requirements of mechanical seals for the sealing fluid used for flushing? - HCBBS Forum
90. High-quality materials—Principles of chemical engineering machinery structure, comprehensive, 517 pages - HCBBS Forum
91. 【Ten Years of Rapid Development in Chemical Processing Equipment】Stable operation for 5,000 hours achieved between 2016 and 2024; the domestically produced feed pumps for Shenhua’s coal-to-oil project saw their first demonstration application - HCBBS Forum
92. [Haichuan’s Guide to Chemical Equipment] Series Post – What are the bypass lines of pumps? - HCBBS Forum
93. Operation Monitoring Guide for Sealedless Pumps (Caged Pumps/Magnetic Drive Pumps) - HCBBS Forum
94. Pump selection - HCBBS Forum
95. How to determine the number of interference fringes - HCBBS Forum
96. Pump inlet pipeline issue - HCBBS Forum
97. 【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2027 to 2026, Hangyang’s liquid hydrogen transfer pumps have successfully withstood extreme temperatures of -253°C as proven by domestic tests - HCBBS Forum
98. What is the impact of crude oil viscosity on the operation of screw pumps? - HCBBS Forum
99. 【Weekly Question】Preventive measures against scaling inside water ring vacuum pumps in chemical plants - HCBBS Forum
100. Water ring vacuum pump - HCBBS Forum