English — Forum #276 (Page 8/145)

1. Equipment for grinding welds inside heat exchanger shells - HCBBS Forum
2. After the implementation of GB/T713.1-.2023, can the old standard plates still be used? - HCBBS Forum
3. So how can welding stress be eliminated in nickel-based alloys, in order to prevent stress corrosion during use? - HCBBS Forum
4. Circulating water system - HCBBS Forum
5. Who has Professor Sun Lanyi’s PPT? - HCBBS Forum
6. Application of GTS dual-power fast switching switch in school power supply systems - HCBBS Forum
7. Is it mandatory to include a QR code on the type test certificate for pressure pipeline components? - HCBBS Forum
8. Why isn’t the exhaust steam from the turbine sent directly to the boiler for heating before being used to generate power? - HCBBS Forum
9. Backside protection methods for stainless steel welding - HCBBS Forum
10. Understand the process package in one article - HCBBS Forum
11. Internal structure of coiled tube heat exchangers - HCBBS Forum
12. Are welds of categories A and B in the shell side of fixed-tube plate heat exchangers required to undergo 100% RT non-destructive testing? - HCBBS Forum
13. Issue regarding the protrusion length of nozzles on the tank roof - HCBBS Forum
14. What is a Safety Instrumented System SIS? - HCBBS Forum
15. Are gas-shielded flux-cored wires and self-shielded flux-cored wires the same thing? - HCBBS Forum
16. Analysis of the reasons for high vibration levels in diaphragm compressors and solutions - HCBBS Forum
17. Discussions on post-weld heat treatment in GB150.4-2024 - HCBBS Forum
18. What is the microstructure of precipitation-hardening stainless steels, and what materials are examples of such? - HCBBS Forum
19. What tools do people use to tighten the equipment studs of heat exchangers (the M48 studs)? - HCBBS Forum
20. Welding procedure qualification - HCBBS Forum
21. Surface treatment - HCBBS Forum
22. Special requirements for duplex stainless steel - HCBBS Forum
23. Why are hydrogen-induced cracking and hydrogen sulfide stress corrosion cracking tests conducted on steel buried pipelines? - HCBBS Forum
24. Issues regarding welding test plates for low-temperature vessel equipment, welding test plates for heads, and heat treatment test plates for base material - HCBBS Forum
25. What are the factors that affect the fatigue strength of materials? - HCBBS Forum
26. An excessive weld bead height actually reduces the service life of the container by half - HCBBS Forum
27. 13 common factors affecting the lifespan of centrifugal pumps - HCBBS Forum
28. Development trends of the non-destructive testing industry in the next five years - HCBBS Forum
29. Issues related to non-destructive testing per GB/T150-2024 - HCBBS Forum
30. Precautions before installing instruments - HCBBS Forum
31. Name of corrosion experiment and main components of solution - HCBBS Forum
32. How is the rusting grade of steel surfaces determined? How is the processing level determined? - HCBBS Forum
33. Is the size of the heat exchanger tube ports related to the flow area of the heat exchange tubes? - HCBBS Forum
34. Calculated thickness, design thickness, nominal thickness, effective thickness, steel thickness - HCBBS Forum
35. Different inspection priorities for moving and stationary equipment, as well as zero-failure equipment management - HCBBS Forum
36. Surfacing evaluation - HCBBS Forum
37. The issue of inconsistent diameter specifications at the inlet and outlet of the air buffer tank - HCBBS Forum
38. Why is it necessary to measure the diameter of long-distance pipelines? - HCBBS Forum
39. Looking for recommendations for coatings to protect flange sealing surfaces during heat treatment - HCBBS Forum
40. How to determine the mixer speed - HCBBS Forum
41. Is the straight section of an elliptical head considered part of the cylinder or of the head in terms of calculations? Is the formula for calculating the thickness of an elliptical head applicable only within the ellipsoidal surface? - HCBBS Forum
42. Common hazards of pressure vessels – stress corrosion cracking - HCBBS Forum
43. Application scope of magnetic particle testing - HCBBS Forum
44. Flange connection – why not use 304 bolts? - HCBBS Forum
45. What is OPC protection? - HCBBS Forum
46. How to weld heat-resistant steel? - HCBBS Forum
47. Analysis of the causes of packing leakage in piston compressors and solutions - HCBBS Forum
48. The purpose of studying the mechanical properties of metal materials - HCBBS Forum
49. Regulations on the Safety Supervision of Special Equipment - HCBBS Forum
50. Selection and installation of pneumatic control valves - HCBBS Forum
51. The role of manganese (Mn) in steel - HCBBS Forum
52. Engineering technology for liquefied hydrocarbon spherical tank stations - HCBBS Forum
53. What is the material of the heat exchange tubes 13CrMo4-5 used in domestic pyrolysis gas quenching heat exchangers? ? - HCBBS Forum
54. . What’s the difference between I-beams and H-beams? - HCBBS Forum
55. Issues regarding the material of pressure vessel flanges per NB/T47021~47023 - HCBBS Forum
56. Full Life Cycle Management of Common Pumps in the Chemical Industry - HCBBS Forum
57. Key points of welding process for 12Cr1MoVG - HCBBS Forum
58. Protection against vibrations in heat exchangers - HCBBS Forum
59. Protection and inspection measures for shut-down and idle equipment in petrochemical enterprises - HCBBS Forum
60. Classification of valve operating temperatures - HCBBS Forum
61. Application of the two-in-one anti-intermittent power supply module in addressing intermittent power supply issues - HCBBS Forum
62. Heat treatment of carburized steel - HCBBS Forum
63. Principles and requirements for installing valves - HCBBS Forum
64. How to choose a mixing device - HCBBS Forum
65. 【Premium】Sinopec Static Equipment Installation Plan - HCBBS Forum
66. Is a weld procedure qualification required for the lining flange and the lining flange cover? - HCBBS Forum
67. Difference between [Notification] and [License] for special equipment - HCBBS Forum
68. How to check the leveling of shims for static equipment - HCBBS Forum
69. The official website of the National Chemical Equipment Design Technology Center is not accessible – how can this be resolved? - HCBBS Forum
70. Grain size - HCBBS Forum
71. Structural diagrams of distillation columns and packed columns - HCBBS Forum
72. Heat treatment issues for U-shaped bend heat exchangers? - HCBBS Forum
73. Are pipe fittings and pipes the same thing? - HCBBS Forum
74. Non-destructive testing of welds on flanges with necks - HCBBS Forum
75. Forging quality planning - HCBBS Forum
76. Semi-tube jacket pitch - HCBBS Forum
77. What is this device? - HCBBS Forum
78. Heat treatment of ferritic stainless steels - HCBBS Forum
79. 13 Mnemonics for Equipment Management - HCBBS Forum
80. Do hydrogen environment pressure vessels require hydrogen-resistant steel plates? - HCBBS Forum
81. Can process manholes be installed according to ASME Appendix 44 design? - HCBBS Forum
82. 【Ten Years of Rapid Development in Chemical Equipment】World’s largest MTO reactor with a diameter of 15 meters and a length of 45 meters delivered, 2021–2025 - HCBBS Forum
83. What are the differences between drum boilers and once-through boilers? - HCBBS Forum
84. Why are the valves set up this way? - HCBBS Forum
85. Beam deflection calculation - HCBBS Forum
86. The issues most easily overlooked in the piping layout design of reciprocating compressors - HCBBS Forum
87. Corrosion resistance of ferrous metals and their alloys - HCBBS Forum
88. How to choose the right valve - HCBBS Forum
89. Precautions for using magnetic drive stirrers - HCBBS Forum
90. Must non-standard containers used for highly hazardous media use WN flanges? - HCBBS Forum
91. Chinese steel grade designation method - HCBBS Forum
92. Allowed pressure drop range for fluid in pipeline - HCBBS Forum
93. Can there be excess height in the welds of low-temperature vessels? - HCBBS Forum
94. Allowable stress at the end of high-pressure cylinders - HCBBS Forum
95. Maintenance time and efficiency in equipment management - HCBBS Forum
96. Why is it necessary to blow down a boiler? - HCBBS Forum
97. expansion joint - HCBBS Forum
98. Selection of pipeline flame arresters - HCBBS Forum
99. 14 essential questions to know for equipment maintenance - HCBBS Forum
100. Should a newly built tank with ventilation holes undergo a water filling test for its roof? - HCBBS Forum