English — Forum #92 (Page 16/87)

1. Issues regarding the material and manufacturing standards of forged pipe fittings - HCBBS Forum
2. 【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2024 to 2028, Longkou’s large-diameter steel pipelines for LNG, equipped with photosensitive fiberglass lining for corrosion protection, have filled a gap in China’s industry - HCBBS Forum
3. Pipeline design pressure issue - HCBBS Forum
4. 【Ten Years of Rapid Development in Chemical Engineering Equipment】2016 – Successful development of straight-seam submerged arc welded pipes for transporting supercritical carbon dioxide, with maximum pipe diameters and wall thicknesses achieved - HCBBS Forum
5. 【Ten Years of Rapid Development in Chemical Processing Equipment】Development of the first hollow-motor-type downhole flow control valve completed between 1434 and 2024 - HCBBS Forum
6. 【Ten Years of Rapid Development in Chemical Equipment】The first Φ2820x28mm spiral steel pipe was successfully produced from 2025 to 2035 - HCBBS Forum
7. Ultra-transparent valve pump tank flange leakage protection shield system - HCBBS Forum
8. Daily maintenance and troubleshooting tips for butterfly valves - HCBBS Forum
9. How to determine the pressure before and after a control valve that operates by gravity flow? - HCBBS Forum
10. 【Ten Years of Rapid Development in Chemical Processing Equipment】Domestic production of roof vent valves and safety valves for 70 million cubic meter liquefied natural gas storage tanks, 1493–2023 - HCBBS Forum
11. PN100, 300 degrees, DN100, carbon steel ball valve – is it necessary to use forged A105? - HCBBS Forum
12. Why are the internal part numbers specified in API 600 2015 trim1 and 2 considered obsolete? - HCBBS Forum
13. The manufacturing facility for ultra-long titanium alloy coiled tubing at Guangdong Zhongshan Guoyin Titanium Energy Technology has officially reached its topping-out stage - HCBBS Forum
14. Long-term use of residual oil backwash filter programmable valve packing - HCBBS Forum
15. Sulfuric acid pipeline grade - HCBBS Forum
16. Design temperature of the heat-traced pipeline - HCBBS Forum
17. Are there precision steel tubes with a diameter of 2507? - HCBBS Forum
18. Development of valve sealing technology: Latest advances in soft sealing and hard sealing technologies - HCBBS Forum
19. Questions regarding the inspection requirements for pressure pipeline welds - HCBBS Forum
20. 【Ten Years of Rapid Development in Chemical Processing Equipment】Development of High-Frequency Straight-Sew Welded Tubes for Dense/Supercritical CO₂ Transport, 2027–2035 - HCBBS Forum
21. Welding started on Bid Section 2 of the general contract for the construction of the Xinjiang Zhundong coal-to-natural gas pipeline project - HCBBS Forum
22. How are pipe layout plans, top views, and 45-degree elbows drawn? - HCBBS Forum
23. Regarding the issue of secondary anti-corrosion at the welding joint between galvanized steel pipe and flange - HCBBS Forum
24. Pipeline stress load condition problem - HCBBS Forum
25. 【Ten Years of Rapid Development in Chemical Processing Equipment】From 2023 to 2024, Shuangrui’s domestically produced low-temperature expansion joints were used for the first time on large LNG carriers - HCBBS Forum
26. Four-eccentric metal hard-sealed butterfly valve - HCBBS Forum
27. How large can a pressure relief orifice plate be? - HCBBS Forum
28. 【Ten Years of Rapid Development in Chemical Equipment】Domestic Production of NPS 42 Class150 Cryogenic Butterfly Valves for LNG Stations from 1255 to 2023 - HCBBS Forum
29. Pressure Vessel Design and Case Study Analysis* - HCBBS Forum
30. Why should double-disc gate valves be installed in horizontal pipelines with the valve stem pointing vertically upward? - HCBBS Forum
31. Insulation process requirements - HCBBS Forum
32. The large cover of the high-pressure gate valve is leaking; seeking information on its internal structure - HCBBS Forum
33. Performance comparison between floating ball valves and fixed ball valves - HCBBS Forum
34. 【Ten Years of Rapid Development in Chemical Processing Equipment】From 1552 to 2024: Domestic LNG cryogenic butterfly valves were used for the first time on large LNG carriers - HCBBS Forum
35. Are the threads on the stem of a straight-through gate valve all counter-clockwise? - HCBBS Forum
36. Looking for the fourth edition textbook on pressure pipeline training - HCBBS Forum
37. Bolt length for non-metallic flanges - HCBBS Forum
38. Is it necessary to conduct **supervised inspection** on steam temperature and pressure reducers exported abroad? - HCBBS Forum
39. Where did our xx procurement department buy the HG5010-58 flanges? - HCBBS Forum
40. How should the additional amount for corrosion or abrasion be determined when calculating the wall thickness of straight pipes? - HCBBS Forum
41. For thermal pipelines that have been operating smoothly for over a decade, is it still necessary to conduct a stress analysis? - HCBBS Forum
42. Which technological innovations in diaphragm valves have improved the efficiency of industrial processes - HCBBS Forum
43. Except,,, - HCBBS Forum
44. Problems with pipeline welding - HCBBS Forum
45. Adjustment of the pressure in the carburetor outlet line - HCBBS Forum
46. I would like to ask about the model of a safety valve with a set pressure of 15 KPa and an inlet pipe diameter of 200 - HCBBS Forum
47. The operating conditions and handling of valves should be closely integrated - HCBBS Forum
48. Jiangsu Chengde Steel Pipe has obtained a patent for “a device for flattening the ends of seamless steel pipes” - HCBBS Forum
49. There is a non-standard flange on site, and standard gaskets are required; by how much can the gasket protrude beyond the inner diameter of the pipe? - HCBBS Forum
50. What is the price difference between PN25 flanges and PN40 flanges? - HCBBS Forum
51. Fully open safety valves and slightly open safety valves - HCBBS Forum
52. Help: In which standard can I find a table showing the relationship between the wall thickness of seamless steel pipes and their pressure-bearing capacity? - HCBBS Forum
53. Are steam pipes with a design pressure of 0.8 MPa, a design temperature of 175 degrees, and a diameter of less than 150 mm considered pressure pipes? - HCBBS Forum
54. The public heating pipelines in industrial parks fall under GB2 - HCBBS Forum
55. 【Ten Years of Rapid Development in Chemical Engineering Equipment】DN2200-12.24 MPa Inlet Ball Valves for Large-Scale Pumped Storage Power Stations, 1735-2024 - HCBBS Forum
56. Urgent! Do all valves except those for remote control need to be operated manually? - HCBBS Forum
57. Does anyone know these two types of copper tubes? Are there any parameters for heat exchange efficiency? Are they all used on screw evaporators? - HCBBS Forum
58. 【Ten Years of Rapid Development in Chemical Engineering Equipment】The project ’Development and Performance Testing of Intelligent Pipe Bodies 1392-2024’ has passed the acceptance review - HCBBS Forum
59. Are there metal butterfly valves and gate valves with soft seals? - HCBBS Forum
60. Selection and installation location of valves, advantages and disadvantages of various types of valves - HCBBS Forum
61. Why, when pipes and equipment are subjected to a hydrostatic test together, the hydrostatic test pressure for the equipment is lower than that for the pipes, and it can be considered in accordance with the requirements for the equipment if it is greater than 77% of the pipes’ hydrostatic test pressure... - HCBBS Forum
62. Question: For PTFE-lined steel pipes with flanges, are additional gaskets needed during installation? - HCBBS Forum
63. Question consultation - HCBBS Forum
64. Construction of the Fujian-Guangdong gas pipeline interconnection project begins - HCBBS Forum
65. I couldn’t find any specifications regarding the valve classification levels L1, L2, L3, and L4. What do L1, L2, L3, and L4 each represent? - HCBBS Forum
66. Material of the filling strip in metal wound gaskets - HCBBS Forum
67. If the pipe designation does not include ‘s’, is it only usable for carbon steel pipes, or can it also be used for stainless steel pipes? - HCBBS Forum
68. Ensuring water resources safety: Sealing technology for water control valves - HCBBS Forum
69. The medium-pressure steam pipeline is too close to the oil pipeline; is it possible to add a water jacket to the oil pipeline? - HCBBS Forum
70. Guess what this is. Is it a valve? - HCBBS Forum
71. Do any of the more experienced colleagues know of bolt manufacturers in China that have passed Aramco’s certification? - HCBBS Forum
72. The accuracy issue of pressure gauges in the hydrostatic testing of long-distance natural gas pipeline projects - HCBBS Forum
73. Inspection standards for blast discs - HCBBS Forum
74. What are the selection principles for the last 4 digits of metal wound gaskets? - HCBBS Forum
75. Help me figure out what DIAG means - HCBBS Forum
76. If you’re not sure, ask: When this type of valve is welded to a pipe, will it damage the plastic sealing surface of the valve? - HCBBS Forum
77. Seeking purchase of a process package for annual production of 10,000 tons of zinc chloride - HCBBS Forum
78. 【Hokod Valve】Ventilation butterfly valve - HCBBS Forum
79. Welding of steel structure gaskets - HCBBS Forum
80. I’m seeking expert advice on how to select and use hydrogen fluoride cylinder connectors - HCBBS Forum
81. Gods, what kind of valve is this? - HCBBS Forum
82. Amount of insulation and auxiliary materials used - HCBBS Forum
83. What is the use of a product quality certificate for seamless steel pipes? - HCBBS Forum
84. What does it mean for a safety valve to be disconnected? - HCBBS Forum
85. Function of the 2-inch nitrogen pipeline for the LNG low-pressure pump bowl - HCBBS Forum
86. Pipe flange connection - HCBBS Forum
87. Selection of positive pressure pipes and pipe wall thickness. - HCBBS Forum
88. Ask for help from the electronic version of "Pipeline Stress Analysis and Engineering Application" from Blue Paper - HCBBS Forum
89. Detailed Explanation of Records for the Fabrication and Inspection of Pipe Fixing Brackets - HCBBS Forum
90. Gasket remarks TG PG LG RF, what do they mean? - HCBBS Forum
91. Calculation of safety valve reaction force and stress analysis - HCBBS Forum
92. What is the scientific name of the thing in the red circle, and what is its principle? - HCBBS Forum
93. Do steam pipeline standards recommend the installation of expansion joints? - HCBBS Forum
94. Correct installation method for Y-type pipe filters - HCBBS Forum
95. Design and approval personnel for pressure pipelines of categories GA, GB, and GC (including GCD) - HCBBS Forum
96. Is a pressure test required for the explosion vent? - HCBBS Forum
97. Pipe socket welding seam detection issues - HCBBS Forum
98. Soft connections are not used for the outlet pipeline of the liquid chlorine storage tank; spring supports are used instead. Is this appropriate? - HCBBS Forum
99. How to isolate areas for hot work on pipelines - HCBBS Forum
100. Fixed wall thickness inspection refers to the time interval between two thickness measurements; how long is this specific interval? - HCBBS Forum