English — Forum #92 (Page 70/87)

1. Calculate the pressure after the flow-limiting orifice plate - HCBBS Forum
2. How to connect a 6-inch US standard pipe to a 5-inch metric pipe? - HCBBS Forum
3. The electric heater heats the air to 250°C, with a flame arrester installed after the electric heater - HCBBS Forum
4. Pipe heat dissipation - HCBBS Forum
5. The main pipeline with a DN800 diameter has a flow rate of 20 m/s; it splits into three branch pipelines with a DN300 diameter, which then converge to form a pipeline with a DN500 diameter. What is the flow rate in each of these pipelines? - HCBBS Forum
6. Why are materials of the 13Cr type not allowed to be directly weld-on to valve bodies for valves such as gate valves and stop valves? - HCBBS Forum
7. Can factory engineers obtain a pressure pipeline design certificate? - HCBBS Forum
8. Green rust spots and yellow rust spots appear on the surface of Hastelloy. Has anyone seen it? Can you please explain? - HCBBS Forum
9. Are carbon steel pipes painted before leaving the factory? - HCBBS Forum
10. Shell test of high-pressure gas for valves - HCBBS Forum
11. Proper use of wave compensators - HCBBS Forum
12. Is a pipeline with 75% hydrogen and 24% nitrogen (both as molar fractions of the components) considered a hydrogen pipeline? - HCBBS Forum
13. [Sealing Knowledge] The history of mechanical seals - HCBBS Forum
14. Problems with the strainer - HCBBS Forum
15. Working principle of pressure relief valve - HCBBS Forum
16. Are there any special requirements for the automatic control valves on the natural gas pipeline in the startup furnace? - HCBBS Forum
17. Pipeline blockage - HCBBS Forum
18. The pipe flange is of DN300 PN2.5 European standard. How should the corresponding wound gasket be specified? - HCBBS Forum
19. Valve specification description - HCBBS Forum
20. Can stainless steel pipes be used in heat transfer oil systems? SS304 - HCBBS Forum
21. How to determine the bolt torque for flanges - HCBBS Forum
22. Request for pipeline diameter calculation - HCBBS Forum
23. Axial flow check valve Centrifugal check valve - HCBBS Forum
24. Who has the SH/T3412-2007 version? - HCBBS Forum
25. Let's all take a look at this valve - HCBBS Forum
26. Distance between steam pipes and cable trays on the pipe tray - HCBBS Forum
27. I would like to ask how the pressure for testing this steam pipe should be determined - HCBBS Forum
28. How to check whether pipeline components are installed properly? - HCBBS Forum
29. Summary of Industrial Valve Standards 2016 - HCBBS Forum
30. Help needed: protection during the maintenance and repair of chemical processing equipment - HCBBS Forum
31. Can large and small end flanges be welded directly to flat weld flanges? Is it not necessary to add a straight pipe section in the middle? - HCBBS Forum
32. Flange type of the valve - HCBBS Forum
33. The relationship between GC and GA - HCBBS Forum
34. pipeline - HCBBS Forum
35. Set pressure of the safety valve - HCBBS Forum
36. Flange welding - HCBBS Forum
37. Questions about pipeline pressure rating - HCBBS Forum
38. Air-cooled tube bank thinning - HCBBS Forum
39. Classification of steam pipes? - HCBBS Forum
40. I was wondering if anyone knows what this wire on the blast disc is for - HCBBS Forum
41. The content is as shown in the figure below - HCBBS Forum
42. Selection of insulation materials for reaction vessels - HCBBS Forum
43. Does a ball valve require a Cv value? - HCBBS Forum
44. Is an O-type control ball valve what we commonly refer to as a on/off valve? - HCBBS Forum
45. Issues with flame arresters on hydrogen pipeline vent lines - HCBBS Forum
46. Are there any manufacturers that produce imported plug valves and rotary valves? - HCBBS Forum
47. The application of industrial endoscopes in the inspection of pipeline welding quality - HCBBS Forum
48. Flue gas pipes require welded lining plates at the joints; what is the function of these plates? - HCBBS Forum
49. Looking for manufacturers of high-temperature, high-pressure small-diameter stop valves and ball valves - HCBBS Forum
50. A set of standards is missing; I earnestly ask experts for their help - HCBBS Forum
51. HG/T20613-2009 PN series bolt length lookup tool - HCBBS Forum
52. Size: 2” – Bore: 27 mm (1.06”) Is this full bore or reduced bore? - HCBBS Forum
53. What conditions are required for welding when making holes under pressure using 3° water and -15° water? - HCBBS Forum
54. What is this tube called? - HCBBS Forum
55. Selection, use and installation requirements of metal spiral wound gaskets - HCBBS Forum
56. New American standard micro-leakage standards API624 API641 - HCBBS Forum
57. Operation of the pipe force valve - HCBBS Forum
58. Calculation of the intermittent thermal expansion amount between the valve body and seat of a high-temperature ball valve, seeking help - HCBBS Forum
59. I’d like to ask the experts: what kind of valve is this? - HCBBS Forum
60. Are there any scalding issues with the pipe insulation supports? - HCBBS Forum
61. Precautions for installation of soft seal telescopic butterfly valve - HCBBS Forum
62. What should be considered when passivating steam pipes? - HCBBS Forum
63. When should pipe supports be used? - HCBBS Forum
64. PTA product filtration - HCBBS Forum
65. Whether the gasket can be used is shown in the diagram - HCBBS Forum
66. How to check for leaks in various sections of the pipeline? - HCBBS Forum
67. Regulating valve impact noise - HCBBS Forum
68. Valve flow and flow resistance testing - HCBBS Forum
69. Is it acceptable to add supports at the pipe expansion joints? - HCBBS Forum
70. What are the regulations for pipelines carrying flammable liquids crossing railway sidelines? - HCBBS Forum
71. The issue of the minimum wall thickness of gate valve bodies - HCBBS Forum
72. Expander high-pressure throttle valve - HCBBS Forum
73. Pressure drop and \"surge\" problems in float-type steam traps - HCBBS Forum
74. Which software is more practical for 3D design of ball valves? - HCBBS Forum
75. Questions regarding PE flange sleeves - HCBBS Forum
76. Requirements for stainless steel material - HCBBS Forum
77. Could everyone please help me check whether this valve installation is reasonable? - HCBBS Forum
78. Is there a way to import NWD into PDMS? - HCBBS Forum
79. The calculation issue of negative deviation in pipe wall thickness - HCBBS Forum
80. Selection of the electric actuator for electric valves - HCBBS Forum
81. Regarding the issue of the short and long radii of pipe elbows - HCBBS Forum
82. The issue between the nominal pressure of the pipe and the maximum allowable pressure of the fittings (common problem) - HCBBS Forum
83. Meaning of letters and numbers on the valve body - HCBBS Forum
84. Power pipeline - HCBBS Forum
85. What causes welding cracks in elbows? - HCBBS Forum
86. Standards for sanitary-grade pipe valves - HCBBS Forum
87. Some questions about valves at 200°C - HCBBS Forum
88. Why is babbitt alloy generally chosen for the sealing surfaces of ammonia valves? - HCBBS Forum
89. The reflux ratio controller is broken and remains in full extraction mode - HCBBS Forum
90. Is pipe water hammer related to pipe length? - HCBBS Forum
91. How long will it take to set up two 260-unit boilers and one 50,000-unit unit? - HCBBS Forum
92. A brief discussion on the intelligent defects of electronically controlled valves - HCBBS Forum
93. Quality issues in dissimilar metal welding of carbon steel and stainless steel - HCBBS Forum
94. Explanation of the gate valve model numbering method - HCBBS Forum
95. For a 325 pipe with an elevation difference of 80 mm, elbows are used for connection; I need help in calculating the angle at which the elbows should be cut - HCBBS Forum
96. Code explanation for needle valve J13H-160III - HCBBS Forum
97. For gas pipelines, when the pressure in a branch pipe is lower than that in the main pipe, can an elbow tee be used to connect the branch pipe to the main pipe? - HCBBS Forum
98. Process for rolling large-sized ends from steel plates - HCBBS Forum
99. Experts, what material should be used for acetic acid pipelines to prevent corrosion? - HCBBS Forum
100. Valve selection for 60% concentration calcium chloride - HCBBS Forum