English — Forum #92 (Page 2/86)

1. Steam trap management - HCBBS Forum
2. In a 1-cubic-unit vacuum tank, if a hole of 1 square centimeter is made, how long will it take for the pressure inside the tank to return to normal? - HCBBS Forum
3. Are there any ** or industry standards for PP exhaust pipes? - HCBBS Forum
4. Seeking advice on steam pipeline issues - HCBBS Forum
5. Is heat treatment required after welding GD1 pipes, and what are the relevant standards? - HCBBS Forum
6. How much pipe length is required for two different liquids to mix thoroughly when they enter the same pipe? - HCBBS Forum
7. The steel pipe material is X52; what is the corresponding flange material? - HCBBS Forum
8. Issues with 3.5D elbows in refrigeration pipes - HCBBS Forum
9. 【Ten Years of Rapid Development in Chemical Equipment】The 2834-2025 intelligent pipeline full-position welding robot has been put into use - HCBBS Forum
10. GB/T 20801-2025 was released. To be implemented on May 1, 2026 - HCBBS Forum
11. Problems encountered in inquiries for ball valves - HCBBS Forum
12. The fourth edition (Volume 1 and Volume 2) of the valve product catalog is no longer available for download; thank you all - HCBBS Forum
13. Material matching issues for pipes and fittings - HCBBS Forum
14. Selection of four-way valves for delayed coking - HCBBS Forum
15. Do you know what this thing does? - HCBBS Forum
16. Understanding the requirements for American standard steel pipes - HCBBS Forum
17. Can stainless steel gaskets be used with carbon steel flanges? - HCBBS Forum
18. Can valves made of F11 material be welded to pipes made of 15CrMo? - HCBBS Forum
19. Insulated ceramic wear-resistant elbow inspection method - HCBBS Forum
20. Size of the storage tank foundation - HCBBS Forum
21. The ball valve is stuck due to the accumulated slurry - HCBBS Forum
22. Nitrogen sealing system - HCBBS Forum
23. I’ve always thought that pipe caps are made from steel plates; I’m not sure if that’s correct - HCBBS Forum
24. What diameter of pipe can be bent using a pipe bender? - HCBBS Forum
25. Issues related to pipeline outer diameter series - HCBBS Forum
26. 【Ten Years of Rapid Development in Chemical Equipment】2891-2025: Filling Technical Gaps! ! ! Our country conducted the first full-scale test of leak jet fire in a high-pressure pure hydrogen pipeline - HCBBS Forum
27. What kind of valve is this? - HCBBS Forum
28. Pneumatic actuator demonstration animation -- Valve knowledge lecture - HCBBS Forum
29. PipeFlow Wizard pipeline fluid dynamics analysis - HCBBS Forum
30. Selection of bolt and nut materials - HCBBS Forum
31. What material are the pipelines used for oxygen supply in hospitals? What are the requirements for cleanliness? - HCBBS Forum
32. Difference between flange, TH, and PAD - HCBBS Forum
33. I’d like to ask the experts: what kind of valve is this? - HCBBS Forum
34. I have a question: what is this hole for? - HCBBS Forum
35. Problems with solenoid valves - HCBBS Forum
36. Manufacturing method and principle of pressure-bearing hole opening and sealing equipment - HCBBS Forum
37. Do you know any testing institutions for valve performance in high-temperature environments, both domestically and internationally? - HCBBS Forum
38. For thermal pipelines that have been operating smoothly for over a decade, is it still necessary to conduct a stress analysis? - HCBBS Forum
39. Does anyone have the second edition of the book on pressure pipeline technology? I would like to buy one - HCBBS Forum
40. I have some questions regarding the design of steam ducts; I hope experts can help answer them - HCBBS Forum
41. Looking for an imported valve - HCBBS Forum
42. What is internal pressure imbalance force, and what is the internal pressure thrust of an expansion joint? - HCBBS Forum
43. Jinsteel Holdings partners with Juncheng Industry to develop a million-ton high-end energy pipeline project - HCBBS Forum
44. Pipe heat dissipation - HCBBS Forum
45. Lens pad - HCBBS Forum
46. For a solution at 100°C with PH=10, carbon steel is used – is post-weld heat treatment required? - HCBBS Forum
47. The impact of internal valve leakage on thermal power plants - HCBBS Forum
48. 【Ten Years of Rapid Development in Chemical Equipment】Betel’s first domestically produced compressor anti-surge valves were successfully put into use between 2025 and 2955 - HCBBS Forum
49. How to switch a three-way valve - HCBBS Forum
50. Calculation of pipeline service life - HCBBS Forum
51. Soda mixing station—Spishak - HCBBS Forum
52. Can cast iron valves be pressure-tested with gas? - HCBBS Forum
53. I would like to ask the experts about the connection methods for gate valves - HCBBS Forum
54. Pipeline plan view symbol issues - HCBBS Forum
55. Can valves with soft seals and PTFE packing meet the requirements for fire resistance testing? - HCBBS Forum
56. 【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2023 to 2025, China’s oil and gas pipeline construction is entering the era of \"all-terrain automatic welding\" - HCBBS Forum
57. Problems with the strainer - HCBBS Forum
58. Natural gas pipeline crossing issues - HCBBS Forum
59. Could the experts please take a look and see if the graphite gasket for my autoclave can provide a proper seal? - HCBBS Forum
60. Regarding fixed welding - HCBBS Forum
61. Material selection for high-temperature oxygen pipelines - HCBBS Forum
62. Quick-connect methods for Class A and B process pipelines - HCBBS Forum
63. Please, dear experts, help give some advice regarding the issue of pipeline flow velocity - HCBBS Forum
64. A opening and closing device that can fit against the tank wall (similar to a louver valve) - HCBBS Forum
65. Predefined spring problem - HCBBS Forum
66. I earnestly ask experts to identify the brand of this ball valve, as shown in the picture! ! ! - HCBBS Forum
67. The medium is hydrochloric acid; what type of valve should be chosen? - HCBBS Forum
68. KITZ Valves Section - HCBBS Forum
69. Has anyone used this Nuoguan solenoid valve? - HCBBS Forum
70. Pneumatic valve failure - HCBBS Forum
71. Tantalum: The “versatile material” for high-end devices – another breakthrough in etching technology! - HCBBS Forum
72. Are carbon steel pipes painted before leaving the factory? - HCBBS Forum
73. Distance between steam pipes and cable trays on the pipe tray - HCBBS Forum
74. Yamatake regulating ball valve V type - HCBBS Forum
75. Frequent chloride corrosion? How should materials be selected for valves? - HCBBS Forum
76. Selection of jacketed tee fittings - HCBBS Forum
77. New option for corrosion protection in pharmaceutical/chemical mixers: Analysis of the application of tantalum surface alloy layers - HCBBS Forum
78. Problems with the newly purchased safety valves - HCBBS Forum
79. Requirements for fire resistance testing of valves - HCBBS Forum
80. 【Process Engineering Division – Pipeline and Valve Technology Exchange Section – Daily Question – Questions 05-06】 - HCBBS Forum
81. Is the valve stem of the outlet gate valve for the low-temperature pipeline safety valve installed horizontally? ? ? - HCBBS Forum
82. Why are materials of the 13Cr type not allowed to be directly weld-on to valve bodies for valves such as gate valves and stop valves? - HCBBS Forum
83. I would like to ask what DJ61f means; which manufacturer makes the low-temperature valves of DN150 that are of better quality (domestic brands)? - HCBBS Forum
84. [Ten years of major development in chemical equipment] 1226-2023 The first domestic hydrogen-doped natural gas pipeline discharge jet fire test - HCBBS Forum
85. What kind of valve is this? - HCBBS Forum
86. Ventilation disc valve, air damper, - HCBBS Forum
87. Is there a CRACK for solidplant2018? - HCBBS Forum
88. Seeking the international standard corresponding to GB/T 16675.1-2012 - HCBBS Forum
89. Dynamic video of the working principle of V-type ball valves - HCBBS Forum
90. The material being pumped using a pump with a stainless steel jacketed tube gets flattened; please help analyze this issue - HCBBS Forum
91. Which manufacturers produce such low-temperature solenoid valves? - HCBBS Forum
92. How to determine valve packing size - HCBBS Forum
93. Manufacturer of tube sheets for heat exchanger and condenser units made of 304L and 316L stainless steel - HCBBS Forum
94. How is the flange size determined for a DN50 pipe? - HCBBS Forum
95. Are there any special requirements for the automatic control valves on the natural gas pipeline in the startup furnace? - HCBBS Forum
96. Regarding the installation sequence of various valves in gas pipelines - HCBBS Forum
97. What is the material of the sealing ring for three-eccentric butterfly valves under low-temperature conditions? - HCBBS Forum
98. Height issue of combustible gas exhaust outlets - HCBBS Forum
99. Which connection method is correct? - HCBBS Forum
100. Selection of liquid nitrogen pipeline materials - HCBBS Forum