English — Forum #92 (Page 19/87)

1. Is it possible to support a vertical 15-meter-long DN200 pipe in the middle using a No. 10 channel steel piece that is 3.5 meters long? - HCBBS Forum
2. What is the difference between Type A valves and Type B valves (check valves) in API 594? - HCBBS Forum
3. Can carbon steel be used for water at 120°C with 380 ppm of chloride ions? - HCBBS Forum
4. Electro-hydraulic gate valve flue gate valve flue baffle door - HCBBS Forum
5. Leak repair for small-diameter branch pipes connected to large-diameter flammable and explosive pipelines - HCBBS Forum
6. What material should be used for the outlet pipes in a laboratory? - HCBBS Forum
7. Questions regarding the selection of pipeline materials for GC1 grade - HCBBS Forum
8. Who would like to speak about the material of the valve core? - HCBBS Forum
9. When purchasing flanges, valves, etc., should casting or forging be chosen? - HCBBS Forum
10. How to design a negative pressure pipeline? What design standards to follow - HCBBS Forum
11. When connecting pipes of two different sizes to branch pipes of one size, how should one choose a tee? - HCBBS Forum
12. Who has a 3D model of the expansion joint? - HCBBS Forum
13. Xiaobai asked a question, please answer! - HCBBS Forum
14. Can pipeline designers apply to become registered chemical engineers? - HCBBS Forum
15. Which standard does this come from? - HCBBS Forum
16. Pressure pipeline registration - HCBBS Forum
17. Case Study Analysis of Engineering Problems in Pressure Pipeline Design - HCBBS Forum
18. Pipeline wall thickness inspection - HCBBS Forum
19. "Regulations on Pipe Layout and Design of Chemical Plants" (HG/T 20549) - HCBBS Forum
20. What are chemical processing units? - HCBBS Forum
21. Fasteners on pressure pipelines - HCBBS Forum
22. Fisher’s Common Questions Explained - HCBBS Forum
23. Manufacturers of high-temperature special valves and four-way valves for delayed coking - HCBBS Forum
24. Looking for finned tube manufacturers - HCBBS Forum
25. Urgently seeking carbon graphite ball valves for the PTA industry - HCBBS Forum
26. Is a needle valve suitable for sealing? For example, 12 MPa on the high-pressure side, and atmospheric pressure on the other side; for a DN20 pipe, is a needle valve suitable? - HCBBS Forum
27. What are the reasons for leakage in different types of seals used in centrifugal pumps? - HCBBS Forum
28. What causes 304 stainless steel bent pipes to turn black after acid washing? - HCBBS Forum
29. Differences and similarities between the PN series and Class series of steel pipe flanges - HCBBS Forum
30. Online valve diagnosis and performance evaluation system - HCBBS Forum
31. About ethanol breather valves? ? ? ? ? ? ? ? ? ? ? ? - HCBBS Forum
32. Is it reasonable for the requirements for steel pipe procurement to exceed those specified in GB? - HCBBS Forum
33. Classification of steam pipes - HCBBS Forum
34. Questions regarding the application for a visual kit - HCBBS Forum
35. P91 pipe cutting - HCBBS Forum
36. Which discipline is responsible for designing the electric sealing damper for the original flue? - HCBBS Forum
37. Looking for manufacturers that produce high-pressure hoses of good quality - HCBBS Forum
38. Parameter issues of control valves - HCBBS Forum
39. Issues in calibrating slightly positive pressure safety valves - HCBBS Forum
40. Who has the technical specifications for metal flexible hoses used in the unloading of mobile pressure vessels (liquid carbon dioxide)? Please share them - HCBBS Forum
41. Share a standard summary for flanges - HCBBS Forum
42. Dear sea friends, could you help check what the dimensions are for this flange and short pipe? - HCBBS Forum
43. Application Cases | Use of Spectrometers in the Valve Industry - HCBBS Forum
44. Insulation and heat retention issues - HCBBS Forum
45. Why do sanitary diaphragm valves experience air leakage? - HCBBS Forum
46. How to connect a threaded flange to a pipe - HCBBS Forum
47. Pipeline connection issues for Class A flammable gases - HCBBS Forum
48. May I ask whether a flame arrester can be used in the pneumatic testing of pipeline systems? - HCBBS Forum
49. What causes cracks to appear during the welding of stainless steel ball valves? - HCBBS Forum
50. Clamp-type connection - HCBBS Forum
51. Elephant ant legs - HCBBS Forum
52. Number of thermocouples required for heat treatment of welded joints in heat-resistant steel pipes - HCBBS Forum
53. Check valve bypass line - HCBBS Forum
54. The standard drawing for pipe racks, HG/T 21629-2021, is about to be implemented - HCBBS Forum
55. The two metering pumps, one large and one small, are connected in parallel. How do I start them? - HCBBS Forum
56. Pressure testing **standards for pressure pipeline components** - HCBBS Forum
57. Installation issues with threaded ball valves - HCBBS Forum
58. Is the determination of the liquid column height on the pump inlet side related to the medium density? - HCBBS Forum
59. Spectroscopic aspects of alloy steel supports and hangers - HCBBS Forum
60. Questions regarding the material used for steam pipes - HCBBS Forum
61. Can stainless steel be identified with a magnet? - HCBBS Forum
62. Which check valve is better for a DN10 pipeline? - HCBBS Forum
63. Gentlemen, I’d like to ask how to calculate the weight of supports and hangers? - HCBBS Forum
64. Should pipelines with a design pressure of less than 1 kilogram undergo hydrostatic testing? - HCBBS Forum
65. What certifications are available for piping engineers? - HCBBS Forum
66. Pipe plug thread - HCBBS Forum
67. Issues regarding material selection for GB3091 welded steel pipes - HCBBS Forum
68. A powerful tool for energy transmission – Staubli - HCBBS Forum
69. Is it okay to arrange the flow meter and control valve in this way? - HCBBS Forum
70. Do process valves have 3D design? - HCBBS Forum
71. Should a filter be installed in front of the mass flow meter? Why does it still not work properly after some time? - HCBBS Forum
72. I can’t understand the drawings. What are these? - HCBBS Forum
73. What material is this Buna-N O-ring made of? - HCBBS Forum
74. Seeking advice on the pressure issue downstream of a self-acting pressure control valve - HCBBS Forum
75. How many fire fighters do you know who are made of pipe fittings? ? ? ? - HCBBS Forum
76. What is the allowable stress of L245 welded pipe under high temperatures in terms of its mechanical properties? ? ? ? - HCBBS Forum
77. Analysis of the causes of vibration in control valves and solutions - HCBBS Forum
78. Valve selection software - HCBBS Forum
79. What welding electrode should be used for 24mm thick steel pipes made of 12Cr1Mo material and 304 stainless steel flanges? - HCBBS Forum
80. How to choose a valve for saline media? - HCBBS Forum
81. The dead end of the circulating water pipe with DN800 is a pipe cap; can a hole of DN150 be made in the pipe cap to connect the pipeline? - HCBBS Forum
82. Online valve processing - HCBBS Forum
83. Who can provide the dimensions of the inner and outer ring metal wound gaskets for these two models? - HCBBS Forum
84. Method for drafting, producing drawings of wear-resistant elbows - HCBBS Forum
85. Steps for re-tightening bolts under pressure - HCBBS Forum
86. There’s a leak in the weld of the stainless steel 304 sink drain; is there any glue that can be used to seal it? - HCBBS Forum
87. Why is a height difference required for east-west and north-south pipe tunnels? - HCBBS Forum
88. Animation of the working principle of a rotary pressure reducing valve - HCBBS Forum
89. May I ask how to choose the pipe material with a steel lining of PO/PE/PP/PVC/PTFE? - HCBBS Forum
90. I’m not an expert in pipeline design; could everyone please check whether it’s appropriate to use stainless steel pipes with carbon steel flanges? - HCBBS Forum
91. May I ask which company’s valve this is? - HCBBS Forum
92. Type C wear-resistant ball valve - HCBBS Forum
93. At the final stage of project construction, can pipeline and equipment pressure testing and leak checking be skipped, and production started directly with materials fed in? - HCBBS Forum
94. Video on the working principle of double-eccentric dual-direction soft-seal butterfly valves - HCBBS Forum
95. Check valve opening pressure - HCBBS Forum
96. Pressure vessel, nozzle specifications - HCBBS Forum
97. Pipeline flaw detection issues - HCBBS Forum
98. Why are bends often added to steam pipes? - HCBBS Forum
99. Issues with the installation of plant-wide pipeline drainage systems - HCBBS Forum
100. Flame arrestor, flame arrestive respirator - HCBBS Forum