English — Forum #276 (Page 46/145)

1. For fixed-tube-sheet heat exchangers that require post-weld heat treatment, the feasibility of leaving one end of the tube end unwelded before the heat treatment and welding it afterward - HCBBS Forum
2. For fixed-tube-sheet heat exchangers, as for how to inspect the final circumferential weld, you can take a look at this diagram - HCBBS Forum
3. There is an issue with the flange determining the MAWP in PVELite container calculations - HCBBS Forum
4. Treatment of dents in the wall plates of 30,000 m3 atmospheric pressure storage tanks - HCBBS Forum
5. Seismic loads on pressure vessels - HCBBS Forum
6. Regarding scale - HCBBS Forum
7. The steel ropes used by the company for loading always damage the painted surface; please suggest some solutions - HCBBS Forum
8. Gauge calibration cost - HCBBS Forum
9. What should be done when a control valve fails? The methods here are comprehensive and extremely practical! Recommendation - HCBBS Forum
10. Seeking to purchase plastic-lined storage tanks - HCBBS Forum
11. Patterns of localized corrosion in stainless steel - HCBBS Forum
12. [Interpretation of the Special Equipment Safety Law] Article 94 - HCBBS Forum
13. A spherical tee is also known as a spherical elbow - HCBBS Forum
14. What is the difference between moment, torque, and rotational force? - HCBBS Forum
15. Do the welds between the reducer support ring and the upper head belong to category E or category D? - HCBBS Forum
16. The minimum thickness of the shell after machining, excluding the corrosion allowance - HCBBS Forum
17. Methods for analyzing the causes of mechanical failures - HCBBS Forum
18. Replacement material for manhole studs - HCBBS Forum
19. Low-strength matching characteristics of welded joints - HCBBS Forum
20. Why is the effect of seismic loads not taken into account when calculating the combined stress on the tower during hydrostatic testing? - HCBBS Forum
21. Regarding the design, manufacturing, supervision, and inspection of skid-mounted equipment, take a look at the official answers and our own thoughts - HCBBS Forum
22. The New Year is almost over; precautions for starting air compressors - HCBBS Forum
23. The drawings specify a minimum forming thickness; how is the thickness of the steel determined in practice? - HCBBS Forum
24. Why are expansion joints installed in heat exchangers? - HCBBS Forum
25. Electrochemical-vacuum trinity deaerator - HCBBS Forum
26. Dear seniors, can we eliminate the reinforcing ring on circular flat-head end caps and use reinforcements instead? What are the consequences of doing so? - HCBBS Forum
27. The fact that no evidence collection is required does not mean that no training is needed - HCBBS Forum
28. Foundation issues for vertical atmospheric storage tanks - HCBBS Forum
29. I want to add a visible float in the middle of the glass tube of the glass plate level gauge - HCBBS Forum
30. General Process Guidelines for Nitrogen Protection of Pressure Vessels - HCBBS Forum
31. I’d like to ask gently: are only the components listed in the table below subject to type testing, and are none of the others tested? - HCBBS Forum
32. Requirements for compressed air quality during pressure testing of propane storage tanks and propylene storage tanks - HCBBS Forum
33. Design specifications for Class III pressure vessels and high-hazard medium applications - HCBBS Forum
34. Principles that must be followed in the design and use of gas-liquid separators - HCBBS Forum
35. Regarding the reinforcement ring - HCBBS Forum
36. What does C.L-T.L mean in pressure vessel drawings? - HCBBS Forum
37. Regarding the insulation and waterproofing along the storage tank - HCBBS Forum
38. Pilot-scale static melt crystallizer - HCBBS Forum
39. Difficulties in stainless steel welding and an introduction to the use of materials and equipment - HCBBS Forum
40. Mesh door for skirt seat inspection hole - HCBBS Forum
41. 35% sulfuric acid solution, 110℃ high temperature, what metal material should be used to resist corrosion? - HCBBS Forum
42. Does the DN65 interface need to be reinforced? - HCBBS Forum
43. What are the materials and types of heat transfer oil coolers that people use? - HCBBS Forum
44. Selection of pressing methods for duplex steel heads - HCBBS Forum
45. [Interpretation of the Special Equipment Safety Law] Article 85 - HCBBS Forum
46. Welding 304 steel plates onto the cylinder of 14Cr1MoR equipment - HCBBS Forum
47. Provisions regarding the applicable situations of the pressure area reinforcement method - HCBBS Forum
48. Total heat transfer coefficient of parallel heat exchangers - HCBBS Forum
49. Comprehensive Catalog of Static Equipment 7.1 [Industrial Furnaces] List (no attachments) - HCBBS Forum
50. Comprehensive Guide to Steel Pipe Classification - HCBBS Forum
51. intergranular corrosion - HCBBS Forum
52. Are there specific regulations regarding the installation of pressure gauges on pressure vessels at the site? - HCBBS Forum
53. Animated video: 37 principles of chemical reactions and their dangers – The universe within a light bulb - HCBBS Forum
54. Animated video: 37 principles of chemical reactions and their dangers – dry ice and magnesium - HCBBS Forum
55. Design and process requirements for ceramic elbow manufacturers - HCBBS Forum
56. Does the outlet of an oxygen storage tank designed for a pressure of 0.6 MPa and a temperature of 40°C require an ASME U stamp? - HCBBS Forum
57. Lifting weight of eye screw - HCBBS Forum
58. On-site construction plan for vertical circular storage tanks - HCBBS Forum
59. Motor operating temperature - HCBBS Forum
60. Issues related to equipment flanges - HCBBS Forum
61. Questions regarding the use of pipe materials - HCBBS Forum
62. Causes of vibration and noise in shell-and-tube heat exchangers and preventive measures - HCBBS Forum
63. A new type of solid particle cooler - HCBBS Forum
64. [Interpretation of the Special Equipment Safety Law] Article 74 - HCBBS Forum
65. Summary of technical requirements for liquid ammonia pressure vessels - HCBBS Forum
66. The heat exchange tube material BFe10-1-1, why is the linear expansion coefficient 0 at -40°? - HCBBS Forum
67. How to calculate the saddle support of a vertical container - HCBBS Forum
68. Department that submits the material substitution form - HCBBS Forum
69. Recrystallization - HCBBS Forum
70. Explanation regarding the bolted deck - HCBBS Forum
71. In the procurement of tower internals, who will supply the supporting components for these internals? - HCBBS Forum
72. GB_T 28712.3-2012 Types and basic parameters of heat exchangers – Part 3: U-tube heat exchangers - HCBBS Forum
73. Basic Knowledge of Corrosion Prevention in Petrochemical Industry - HCBBS Forum
74. Handling of common faults in mechanical seal operation - HCBBS Forum
75. There is a need for a set of natural gas processing skid-mounted equipment - HCBBS Forum
76. Pressure vessel maintenance - HCBBS Forum
77. 98% concentrated sulfuric acid - HCBBS Forum
78. Welds between the flat cover and the cylinder body - HCBBS Forum
79. Calculation of safety valves using superheated steam as the medium - HCBBS Forum
80. Is there any standard that specifies the required number of ladders when joint platforms are created between storage tanks? Thank you - HCBBS Forum
81. Equipment oil change standards - HCBBS Forum
82. In what situations are hardness tests required for pressure vessels? - HCBBS Forum
83. Which standard does 1Cr18Ni9Ti comply with? - HCBBS Forum
84. Seek drawings for the static and dynamic rings of silicon carbide machine seals - HCBBS Forum
85. General requirements for materials under Article 2.1 of the new regulatory standards - HCBBS Forum
86. HG/T20582-2020 - HCBBS Forum
87. Difficulties in welding austenitic stainless steel and countermeasures - HCBBS Forum
88. Heat exchanger shell side anti-scour plate - HCBBS Forum
89. Issues regarding the selection of welding materials for S22053 - HCBBS Forum
90. Register of special equipment operators - HCBBS Forum
91. How to achieve floor-penetrating sealing isolation for vertical containers - HCBBS Forum
92. Does anyone have a workflow card for manufacturing welding evaluation test plates or product welding test plates? - HCBBS Forum
93. Calculation of negative pressure in pressure vessels - HCBBS Forum
94. Animated video: 37 principles of chemical reactions and their dangers – Little Bear Candy Volcano - HCBBS Forum
95. Protection and inspection of shut-down and idle equipment - HCBBS Forum
96. Why is reinforcement needed after the pressure vessel is opened? - HCBBS Forum
97. The world’s first detachable closed-cycle cooling tower! - HCBBS Forum
98. Regarding design changes to pressure vessels - HCBBS Forum
99. Can pure argon arc welding replace argon-electric hybrid welding? - HCBBS Forum
100. Mechanical Knowledge Question Bank (3) - HCBBS Forum