English — Forum #276 (Page 7/145)

1. Handbook of Hardware Tools (2nd Edition) - HCBBS Forum
2. Requirements for static grounding of pipelines - HCBBS Forum
3. Why is it necessary to increase ferrite testing after cold forming of austenitic stainless steel heads? - HCBBS Forum
4. Leveling of elevator steel columns in the boiler industry - HCBBS Forum
5. The hazards of false water level in steam boilers to the boiler itself - HCBBS Forum
6. Nantong Hongde Heavy Industry Co., Ltd. has applied for a patent titled “An Online Detection System for the Deformation of Pressure Vessels” - HCBBS Forum
7. 【History of Haichuan Chemical Industry】The most comprehensive illustrated guide——Jinxi Chemical Machinery Factory: The cradle of chemical machinery manufacturing in China - HCBBS Forum
8. Wuhan No.1 Metallurgical Plant and others have applied for a patent for an overall heat treatment method for large-scale buried storage tanks - HCBBS Forum
9. Calculated thickness of the head under external pressure - HCBBS Forum
10. With the existing standards in place, why are 20801.2, 20801.3, and 20801.4 being established? Is it because those existing standards are about to be repealed? The technical standards specified in TSG31 still reference 32270. - HCBBS Forum
11. 【2026 Vertical Equipment】The core principle behind vacuum distillation towers is their gourd-shaped structure, which is narrow at both ends and wider in the middle - HCBBS Forum
12. Launch of the first LNG membrane-type full-volume tank project - HCBBS Forum
13. Has anyone built a three-chamber storage tank? - HCBBS Forum
14. Horizontal tank saddle support - HCBBS Forum
15. Regarding the issue of heating the furnace - HCBBS Forum
16. Bolt tightening requirements - HCBBS Forum
17. “Cyclone” — The principle of the vortex tube and its applications - HCBBS Forum
18. 【Haichuan Equipment Guessing Game】What kind of pipes need to be so prominently displayed? - HCBBS Forum
19. Lu’an Huaji delivered the first batch of liquid carbon dioxide storage tanks for Huadian Mulei’s 1 million kilowatt carbon dioxide compressed air energy storage demonstration project - HCBBS Forum
20. GB/T150.4-6.4.1 Distance L between the centerlines of butt welds - HCBBS Forum
21. The characteristics of concentrated sulfuric acid media are classified in accordance with the Guidelines for Classifying the Hazards of Media in Pressure Equipment GBT42594-2023; what should be specified regarding the characteristics of the media? - HCBBS Forum
22. The exhibition area of the “Joint Laboratory for Intelligent Health Monitoring and Self-Healing of Petrochemical Equipment” at Tianhua Institute has been completed and put into use - HCBBS Forum
23. How to remove rust, dust, and improve brightness from mechanical equipment and precision parts in acidic environments - HCBBS Forum
24. Hailu Chemical has obtained a patent for a modular feed pipe structure for concentrated sulfuric acid storage tanks, which is simple to construct, install, and maintain - HCBBS Forum
25. 【Ten Years of Rapid Development in Chemical Equipment】2547-2025: Shangguo’s Taonan Wind Power-Coupled Biomass Green Methanol Integration Demonstration Project – 2000 m³ Medium-Pressure Hydrogen Spherical Storage Tank - HCBBS Forum
26. What has been the common design for the central drainage systems in large crude oil storage tanks over the past 5 years? - HCBBS Forum
27. 25.286m³ volume gauge - HCBBS Forum
28. What is the practical significance of the nominal thickness of steel pipes? - HCBBS Forum
29. A simple understanding of the water hammer effect - HCBBS Forum
30. The lifting of the entire chlorination reactor by Lubei Engineering Company was successfully completed - HCBBS Forum
31. The design pressure is 1.0 MPa and the operating pressure is 0.8 MPa; is the maximum allowable operating pressure therefore 0.8 MPa? What is the meaning of the indicated working pressure? - HCBBS Forum
32. Rongsheng Petrochemical’s super-large EO reactor shipped - HCBBS Forum
33. Please provide API Spec 5L, the specification for pipeline steel pipes. Thank you - HCBBS Forum
34. Causes of heat exchanger failures and troubleshooting methods - HCBBS Forum
35. 【Ten Years of Rapid Development in Chemical Processing Equipment】From 2014 to 2025, ANGANG Group achieved the world’s first application of AG785 spherical tank steel, a high-strength, high-toughness, and high-pressure-resistant material suitable for use in deep-sea applications, at 785 MPa - HCBBS Forum
36. Selection of welding materials for Q245R and Q345R - HCBBS Forum
37. Heating furnace technical questions and answers - HCBBS Forum
38. Bike Energy has obtained a patent for a pipeline-integrated containerized storage tank that increases the capacity of storage tanks within standard containers - HCBBS Forum
39. Dalian Heavy Industry successfully delivered the first domestically produced million-ton-class methanol synthesis reactor - HCBBS Forum
40. The top 10 issues most easily overlooked in welding - HCBBS Forum
41. Knowledge of the “9 days work, 5 days off” schedule in petrochemical engineering - HCBBS Forum
42. What about the selection of large gaskets for glass-lined reactors? - HCBBS Forum
43. After the surface of stainless steel equipment is ground, the grinding marks remain even after pickling; how to deal with this? - HCBBS Forum
44. Welcome [Yitailong'er] as the head of the Machinery Equipment region - HCBBS Forum
45. What are flooding, tower submersion, and tower washing? Why? How to do it? - HCBBS Forum
46. Independent and non-independent operation of jacketed vessels - HCBBS Forum
47. Conversion between pressure units such as MPa, bar, kgf/cm2, mmH2O, and mmHg - HCBBS Forum
48. What are ppm, ppb, and ppt? - HCBBS Forum
49. Safety devices for storage tanks - HCBBS Forum
50. Definition of off-spec pressure vessels - HCBBS Forum
51. The rigor issues described in the GB150 standard - HCBBS Forum
52. Old version JB 4732-1995 Steel Pressure Vessels – Analysis and Design Standards - HCBBS Forum
53. What Do You Know About TIG Welding Details? - HCBBS Forum
54. What is UCS-66 indicating? Impact exemption for components or welded joints? - HCBBS Forum
55. Welding of nickel and nickel alloys - HCBBS Forum
56. Design specifications for turbine burst plates - HCBBS Forum
57. Principle of the nitrogen purging system for piston compressor seals - HCBBS Forum
58. Aluminum alloy material - HCBBS Forum
59. Stepper motor selection - HCBBS Forum
60. The respective characteristics of the reaction equipment - HCBBS Forum
61. Hydrogen-induced cracking in HF environments and stress-guided hydrogen-induced cracking HIC/SOHIC-HF - HCBBS Forum
62. Reboiler sealing issue - HCBBS Forum
63. Surface flaw detection of equipment made from 15CrMoR material - HCBBS Forum
64. Inspection cycle for gas cylinders filled by enterprises - HCBBS Forum
65. stainless steel welding rod - HCBBS Forum
66. Corrosion margin of the container - HCBBS Forum
67. Mobile Container Inspection Certificate - HCBBS Forum
68. What should be done if a regular dual-power switch ATS cannot ensure that sensitive loads continue to operate without shutting down during power fluctuations? - HCBBS Forum
69. Safety Operating Procedures for Equipment Inspectors - HCBBS Forum
70. Questions about selecting allowable stress values for ASME materials? - HCBBS Forum
71. First benchmark, second benchmark, and third benchmark - HCBBS Forum
72. Material issues with methanol floating tanks - HCBBS Forum
73. Rules for selecting welding electrodes - HCBBS Forum
74. Safety Operating Procedures for Filling LPG Road Tankers - HCBBS Forum
75. Welding of medium-carbon steel and repair welding of high-carbon steel - HCBBS Forum
76. Special requirements for duplex stainless steel - HCBBS Forum
77. What are the setting pressure, adjustment pressure, and discharge pressure of a safety valve? - HCBBS Forum
78. Stellite alloys and Incoloy alloys - HCBBS Forum
79. The models of pressure sensors and the meaning of their parameters - HCBBS Forum
80. Reinforcement of jacket openings, without sleeve - HCBBS Forum
81. Hydrostatic load on the head caused by a horizontal vessel - HCBBS Forum
82. What is the difference between the stripping section and the rectifying section of a distillation column? - HCBBS Forum
83. Safety Operating Procedures for Boilers - HCBBS Forum
84. Equipment inspection - HCBBS Forum
85. How to distinguish between PB, PE, PVC, PERT, and PPR pipes - HCBBS Forum
86. SW6 indicates that the installation path of this software was not found; how to resolve this? - HCBBS Forum
87. Notice from the State Administration for Market Regulation on Accelerating the Update of Special Equipment - HCBBS Forum
88. Dear HaiChuan experts, please tell me whether it’s worth buying a lifetime membership - HCBBS Forum
89. **Response from the Market Regulation Bureau regarding the online examination for certifiers in pressure vessel design approval - HCBBS Forum
90. What could be the cause of a hole in the tank body used to store fuming sulfuric acid? - HCBBS Forum
91. The difference between confined spaces and restricted spaces - HCBBS Forum
92. I would like to ask everyone some questions regarding pressure vessels - HCBBS Forum
93. How to manage spare parts effectively? - HCBBS Forum
94. Principles for drawing pressure vessel drawings - HCBBS Forum
95. The mathematical relationship for the pitting equivalent value (PRE), also known as the pitting index: - HCBBS Forum
96. Welding cold crack - HCBBS Forum
97. Operating Procedures for Reactor Stirrers - HCBBS Forum
98. Methods for pilot-scale up - HCBBS Forum
99. Thermal displacement of the outlet of horizontal containers - HCBBS Forum
100. Key considerations in pipeline design - HCBBS Forum