English — Forum #276 (Page 10/145)

1. Guide to the Safe Use of Gas Cylinders - HCBBS Forum
2. Regular safety valve discharge test - HCBBS Forum
3. What are the corners that appear on the heat exchanger shell? - HCBBS Forum
4. What are triple majority, triple average, and triple two-out-of-three in a DCS system? - HCBBS Forum
5. New version GBT4732 study question 2 - HCBBS Forum
6. What are the differences and connections between the safety valve of a spherical tank, the backup safety valve, the auxiliary line, and the vent line? - HCBBS Forum
7. The hardness of the nut is slightly lower than that of the bolt – why is that? - HCBBS Forum
8. Technical requirements for HIC carbon steel and carbon-manganese steel - HCBBS Forum
9. Issues with the instrument air for purging and flame detection! - HCBBS Forum
10. Preparation work before welding aluminum and aluminum alloys - HCBBS Forum
11. Corrosion of inlet and outlet pipelines of the reconditioned regeneration caustic scrubber tower - HCBBS Forum
12. Connection between the heat exchange tubes and the tube sheet in shell-and-tube heat exchangers - HCBBS Forum
13. Why do pores always appear in gas shielded welding? - HCBBS Forum
14. Equipment selection - HCBBS Forum
15. Design of overflow pipes for atmospheric pressure tanks/containers - HCBBS Forum
16. Determination of operating pressure and design pressure for tank renovation work - HCBBS Forum
17. Design specifications for fatigue-resistant containers with proven successful application experience - HCBBS Forum
18. Process control in pressure vessel manufacturing - HCBBS Forum
19. The hydrogen crisis for metals: hydrogen embrittlement - HCBBS Forum
20. Equipment Evaluation and Management System - HCBBS Forum
21. With low and high reporting warnings, why are there also low-low and high-high warnings? - HCBBS Forum
22. Structural Innovation and Computational Analysis of Industrial Boilers - HCBBS Forum
23. Learn about the classification of petrochemical heat exchangers - HCBBS Forum
24. How to select the specifications and materials for heat exchange tubes - HCBBS Forum
25. Is an oxygen valve a special type of valve? - HCBBS Forum
26. Summary Table of Corrosion Testing Methods for Stainless Steel and Nickel-Based Alloys - HCBBS Forum
27. How should we properly handle gas cylinders? What are the hazards of gas cylinders? - HCBBS Forum
28. Benchmark - HCBBS Forum
29. How should the design service life be determined? - HCBBS Forum
30. Establishment of the Research Center for the Development of High-End Equipment Manufacturing in China’s Petroleum Industry - HCBBS Forum
31. Melting analysis vs finished product analysis - HCBBS Forum
32. Selection of surfacing material for valve sealing surfaces - HCBBS Forum
33. Tube bundle vibration in shell and tube heat exchangers - HCBBS Forum
34. Inspection regulations for safety valves of fixed pressure vessels - HCBBS Forum
35. Product welding test plate - HCBBS Forum
36. safety valve - HCBBS Forum
37. Appearance of wound gaskets - HCBBS Forum
38. Mandatory standards and recommended standards - HCBBS Forum
39. Classification of mixed media in pressure vessels – related issues - HCBBS Forum
40. Meaning of common thermocouple calibration numbers and temperature measurement ranges - HCBBS Forum
41. Fundamentals of Heat Treatment for Pressure Vessels - HCBBS Forum
42. Inspection of the furnace bricks in the four-nozzle gasification furnace and replacement with new bricks - HCBBS Forum
43. Seek drawings for a 500L high-pressure reactor - HCBBS Forum
44. The difference between Nm3 and m3 - HCBBS Forum
45. Analysis of skirt seats, saddle seats, ear seats, and leg foot bolts - HCBBS Forum
46. Precautions for lifting - HCBBS Forum
47. Selection of shell and tube heat exchangers - HCBBS Forum
48. Why do the devices keep breaking down? and fault cause analysis - HCBBS Forum
49. Principles for determining design pressure and design service life - HCBBS Forum
50. Interpretation of Laws and Regulations on Safe Production of Special Equipment - HCBBS Forum
51. How are the license levels for pressure vessel manufacturing classified? - HCBBS Forum
52. Tapered head – when is flanging necessary? Flanging thinning amount - HCBBS Forum
53. Should I choose a centrifugal pump or a positive displacement pump? How should one choose a model? - HCBBS Forum
54. The work that was just done! - HCBBS Forum
55. Argon extraction in the double-tower process - HCBBS Forum
56. What does dual-grade austenitic stainless steel mean? - HCBBS Forum
57. Guidelines for the Implementation of a Safety Risk Classification and Control System for Pressure Vessel Use, as well as a System for Identifying and Rectifying Potential Hazards - HCBBS Forum
58. Differences between carbon arc gas gouging and plasma cutting - HCBBS Forum
59. Back-and-forth oil station - HCBBS Forum
60. Surface treatment: What is Dacromet? Differences from galvanizing and chromium plating. - HCBBS Forum
61. Non-destructive testing techniques for petroleum machinery and equipment - HCBBS Forum
62. 【Ten Years of Rapid Development in Chemical Equipment】From 2042 to 2024: China National Petroleum’s first complete ethylene cracking furnace module, weighing 3,200 tons, was successfully installed - HCBBS Forum
63. Classification and functions of flow control orifice plates - HCBBS Forum
64. What should be done if the pressure in the spherical tank exceeds 6.4 MPa or if the thickness exceeds 50 mm? - HCBBS Forum
65. Austenitic stainless steel welding - HCBBS Forum
66. Why leave three threads after tightening the bolt? - HCBBS Forum
67. Sleeve anti-pullout valve, emergency shut-off valve - HCBBS Forum
68. Why are intermittent welding avoided for Class E welds on low-temperature steel (such as 09MnNiDR) equipment? - HCBBS Forum
69. 3 major mistakes in bearing lubrication - HCBBS Forum
70. After the plastic PPH storage tank is molded, what is the typical deviation in the diameter of its cylinder? - HCBBS Forum
71. Is the absence of a red line on the pressure gauge a safety hazard? - HCBBS Forum
72. Classification of refractory materials by refractoriness, shape, chemical composition, chemical properties, and bulk density - HCBBS Forum
73. What are flash point, ignition point, and autoignition? - HCBBS Forum
74. Why are the valves set up this way? - HCBBS Forum
75. What needs to be done before carrying out welding work - HCBBS Forum
76. Several holes on the safety valve body - HCBBS Forum
77. Denier to millimeter conversion - HCBBS Forum
78. Additional requirements for resistance to delamination tearing - HCBBS Forum
79. What are the standards for the flatness requirement of steel pipes after bending? - HCBBS Forum
80. Issue of the effective filtration area of the filter - HCBBS Forum
81. Composition of the numbers and names of **recommended standards for mechanical drawing** - HCBBS Forum
82. Radar level gauges and guided wave level gauges - HCBBS Forum
83. 【Ten Years of Rapid Development in Chemical Equipment】2015–2024: China’s first 120-cubic-meter large-capacity ultra-low temperature storage tank achieves international certification - HCBBS Forum
84. Does any fellow sailor know what material this is? - HCBBS Forum
85. Let’s think about it and ask everyone: is a working pressure of up to 9.5 Mpa and a design pressure of 10 Mpa acceptable? - HCBBS Forum
86. Terminology in spare parts management that equipment managers must know - HCBBS Forum
87. Regarding heat exchangers that have been stored in a warehouse for several years, how is the service life calculated? - HCBBS Forum
88. A typographical error in standard GB/T150.2-2024 - HCBBS Forum
89. Repair welding measures for stainless steel equipment - HCBBS Forum
90. It is recommended that the moderators create a new discussion forum for version 150 - HCBBS Forum
91. Equipment Inspection and Management System - HCBBS Forum
92. How to adjust the process parameters of a distillation tower? - HCBBS Forum
93. Differences between AC and DC welding and how to choose - HCBBS Forum
94. 【Ten Years of Rapid Development in Chemical Equipment】2155–2024: Mobile factory builds China’s first 680-ton DN3100 ammonia synthesis tower - HCBBS Forum
95. 【Haichuan Equipment Guessing Game】Important equipment for solving the food problem in the 1960s - HCBBS Forum
96. Issues with new GB150 steel pipes - HCBBS Forum
97. Basic knowledge of gas storage tank selection - HCBBS Forum
98. Equipment management - HCBBS Forum
99. Technical requirements for the procurement of pressure vessel heads - HCBBS Forum
100. What metal materials are used for the boiler heating surfaces? - HCBBS Forum