English — Forum #92 (Page 7/86)

1. European flanges and American flanges - HCBBS Forum
2. A guide for selecting new control valve manufacturers – this post provides information on how to choose control valves, the appropriate accessories to use, and the functions they can perform - HCBBS Forum
3. Can flanged stainless steel flexible connectors be used with gasoline? - HCBBS Forum
4. When is the safety valve inlet check valve used? - HCBBS Forum
5. Fluorinated acid-base valve - HCBBS Forum
6. High-quality domestic 35MPa high-flow pneumatic control valves – seeking recommendations from those with more experience - HCBBS Forum
7. Why are valves subjected to salt spray testing? - HCBBS Forum
8. Safety first, corrosion resistance as a safeguard: Challenges with corrosion in chemical reactors? Detailed explanation of the tantalum-coated “skin” upgrade solution - HCBBS Forum
9. What should be considered when passivating steam pipes? - HCBBS Forum
10. Pressure vessel, nozzle specifications - HCBBS Forum
11. What are the requirements regarding the distance between the installation location of pressure pipeline supports and hangers and the pipeline welds? - HCBBS Forum
12. Do spring supports and hangers used on pipelines need to undergo any tests? - HCBBS Forum
13. New American standard micro-leakage standards API624 API641 - HCBBS Forum
14. Insulation and heat retention issues - HCBBS Forum
15. Number of thermocouples required for heat treatment of welded joints in heat-resistant steel pipes - HCBBS Forum
16. Regarding the requirement to provide a manufacturing supervision and inspection certificate for pressure pipeline components - HCBBS Forum
17. Question: What standards should be referred to when selecting the grade of welding electrodes (or welding wire) for welding pipes? - HCBBS Forum
18. Trough graphite gasket code - HCBBS Forum
19. Help, what kind of valve is this? - HCBBS Forum
20. Piping model problem - HCBBS Forum
21. Design for open-air long-distance natural gas transmission - HCBBS Forum
22. Regarding the issue of installing protective sleeves on valve seats for pipeline purging and welding - HCBBS Forum
23. Issues with cartridge ball valves; seeking expert assistance - HCBBS Forum
24. Where can I order the new version of the HG/T21629 standard drawings for pipe racks? - HCBBS Forum
25. How should this sentence be translated in chemical engineering English? I earnestly beg experts to provide an answer - HCBBS Forum
26. What type of gasket is this? Urgently need an expert to translate it - HCBBS Forum
27. Valve model - HCBBS Forum
28. Flow rate issues in fluorine gas pipelines - HCBBS Forum
29. Selection of the discharge valve at the bottom of polyacrylamide - HCBBS Forum
30. Oil heating - HCBBS Forum
31. 【Ten Years of Rapid Development in Chemical Engineering Equipment】From 1950 to 2024, domestically produced CRA fully automatic welding equipment was successfully used for the first time in submarine pipeline installation - HCBBS Forum
32. When are asbestos gaskets used on chemical plant equipment? What’s the use of a metal pad? - HCBBS Forum
33. Where can big shots buy this type of chain handwheel? - HCBBS Forum
34. Manufacturers of large-diameter DN350/DN300 explosion-proof IIC flame arresters - HCBBS Forum
35. How to calculate the steam production rate of a pure steam generator - HCBBS Forum
36. Does a ball valve require a Cv value? - HCBBS Forum
37. What does NGBPR mean? Some valves are labeled GBPR – by the way, what is the difference between them? - HCBBS Forum
38. Discussion on pipeline design pressure - HCBBS Forum
39. Pressure pipelines - HCBBS Forum
40. Online assistance for flange selection or design - HCBBS Forum
41. What type of valve is this? - HCBBS Forum
42. What does the sealing type of a valve flange depend on? - HCBBS Forum
43. Why can’t a large-diameter butterfly valve be opened? What should I do? - HCBBS Forum
44. What is the minimum flow velocity for a check valve? - HCBBS Forum
45. A coding issue with Neway valves - HCBBS Forum
46. How to flexibly connect storage tanks - HCBBS Forum
47. 【Ten Years of Great Development in Chemical Equipment】Major breakthroughs from 2577 to 2025! The DN2200 large-diameter, extra-large and extra-long spray-coated wrapped insulation pipe has been successfully produced - HCBBS Forum
48. 【Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 03–19】 - HCBBS Forum
49. Why does boiler water need to be softened for electric thermostatic valves? - HCBBS Forum
50. Consult about the material of small-diameter butt-welded pipe caps - HCBBS Forum
51. How to check for leaks in various sections of the pipeline? - HCBBS Forum
52. 【Haichuan Equipment Guessing Game】It has no top and no bottom! - HCBBS Forum
53. Seeking help regarding the testing method for float-type steam traps - HCBBS Forum
54. Weld flaw detection ratio - HCBBS Forum
55. Questions about the J-T valve - HCBBS Forum
56. Why are dual-site level gauges used in steam flash tanks? - HCBBS Forum
57. How to handle welding-induced damage to the flange surface of a steel-lined fluoroplastic ball valve so as to prevent leakage of the medium? - HCBBS Forum
58. At the final stage of project construction, can pipeline and equipment pressure testing and leak checking be skipped, and production started directly with materials fed in? - HCBBS Forum
59. What kind of valve is this? What is it mainly used for? - HCBBS Forum
60. Which domestic manufacturers are quite outstanding in the field of cryogenic and ultra-low temperature valves? - HCBBS Forum
61. Reason why valves are harder to open and close at high pressure than at low pressure - HCBBS Forum
62. I’m confused between the PN series and the CLASS series; please help me, friends - HCBBS Forum
63. Regarding the pipe fitting wall thickness series - HCBBS Forum
64. How many fire fighters do you know who are made of pipe fittings? ? ? ? - HCBBS Forum
65. An octagonal pad that’s so hard and completely inflexible – how can it be used as a gasket? - HCBBS Forum
66. Design standards for the length of copper tubes in oxygen pipeline flame arresters - HCBBS Forum
67. What valve is suitable for preventing silica powder from sticking together? - HCBBS Forum
68. Questions regarding the valve material - HCBBS Forum
69. Factors affecting pipeline pressure difference - HCBBS Forum
70. Problem with gaskets; please ask an expert to help solve it - HCBBS Forum
71. Help! Meaning of the ball valve model Q35HR-J162 - HCBBS Forum
72. 6 ways to address clogging in self-acting control valves - HCBBS Forum
73. Solve it – what does sch20 mean in the diagram? - HCBBS Forum
74. What material should be used for the outlet pipes in a laboratory? - HCBBS Forum
75. 【Ten Years of Rapid Development in Chemical Engineering Equipment】X80 grade 1219x40 straight-seam submerged arc welded pipes for oil and gas transmission, 2017–2023 - HCBBS Forum
76. Reasons for internal leakage in valves - HCBBS Forum
77. Does the process vent pipe fall under the category of pressure pipelines? - HCBBS Forum
78. Licensing rules for special equipment production and filling units - HCBBS Forum
79. How to design a negative pressure pipeline? What design standards to follow - HCBBS Forum
80. Octagonal pad specifications - HCBBS Forum
81. Analysis of the advantages and disadvantages of linear stroke control valves and angular stroke control valves - HCBBS Forum
82. Selection of Materials for Pressure Piping Design and Examples of Piping Design - HCBBS Forum
83. Ball valve partially open - HCBBS Forum
84. Four common application guidelines to note when using a breathing valve with dual connections - HCBBS Forum
85. I need help determining what kind of pipes and valves to use - HCBBS Forum
86. Precautions for installation of soft seal telescopic butterfly valve - HCBBS Forum
87. How to clean the liquid medium inside pipes? - HCBBS Forum
88. The double-headed snake in the piping system - HCBBS Forum
89. I would like to ask experts and seasoned professionals about the wall thickness range for welding procedure qualification - HCBBS Forum
90. Typical applications of ultra-high pressure, high-frequency, zero-leakage solenoid valves - HCBBS Forum
91. Pipeline Stress Analysis and Calculation—a classic book that provides very detailed explanations on the fundamental calculations related to pipeline stress - HCBBS Forum
92. corrosion allowance - HCBBS Forum
93. The issue with the elbow part number - HCBBS Forum
94. Pressure pipes and fittings are required to have TS marked on their certificates after 2014 - HCBBS Forum
95. What kind of valve is this? - HCBBS Forum
96. Common valve installation knowledge and applications - HCBBS Forum
97. What is the safe distance between Class A tank areas and pipe rack structures? Could some expert help explain this? - HCBBS Forum
98. China’s first standard for steel pipes used in hydrogen storage and transmission pipelines, **“Steel Pipes for Hydrogen Storage and Transmission Pipelines” (GB/T 46599—2025)**, has been released - HCBBS Forum
99. [2026 New Regulation Warning] Micro-opening safety valves are strictly prohibited for use with gaseous media (TSG 92-2026) - HCBBS Forum
100. Precious---Display of the double-eccentric ball valve structure and its working principle - HCBBS Forum