English — Forum #723 (Page 426/642)

1. Seeking advice: which company in China is the best for producing electric heating heat transfer oil furnaces? - HCBBS Forum
2. 【Weekly Topic】Topics on welding - HCBBS Forum
3. 【Daily Question No. 42】December 08, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
4. Certification for special equipment - HCBBS Forum
5. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 391 - HCBBS Forum
6. For example, after the cylinder is cold-rolled, heat treatment is required to restore its properties, and test plates are needed; where should samples be taken from these test plates? Is it in... - HCBBS Forum
7. Metering pump flow control - HCBBS Forum
8. How to reduce nickel levels in electroplating wastewater to below 0.5PPM? How to break down complexes in nickel-containing wastewater? - HCBBS Forum
9. Regarding the translation of Rundown in sentences (hydrocracking) - HCBBS Forum
10. Issues regarding the inlet of heat exchangers designed per ASME standards - HCBBS Forum
11. Seeking help with a reactor level gauge - HCBBS Forum
12. Plan for replacing the lower head of a packed tower - HCBBS Forum
13. The biodegradability of formaldehyde wastewater is less than 0.1, and biological treatment in the aerobic stage as well as the Fenton process are ineffective. . What should I do? - HCBBS Forum
14. Which MTBE plants still use alkali scrubbing tanks? - HCBBS Forum
15. 【Daily Question】December 6, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
16. What type of level gauge is most suitable for installation in small cement plants? - HCBBS Forum
17. Polyurethane materials for use in automobiles are seeing rising demand, with the highest requirements applied to ceiling materials - HCBBS Forum
18. A metallurgy question - HCBBS Forum
19. Why are devices such as waste heat boilers and propylene cryocoolers fed from the top rather than from the bottom? - HCBBS Forum
20. Activity point trading problem - HCBBS Forum
21. Plate heat exchanger for heating ethylene glycol - HCBBS Forum
22. What are the major manufacturers of analytical instruments for domestic wastewater treatment? - HCBBS Forum
23. The heating medium in the reboiler has been changed to heat transfer oil - HCBBS Forum
24. Could everyone please help recommend two manufacturers that produce saltwater evaporation equipment? - HCBBS Forum
25. Calculation of furnace gas temperature at the outlet of the first-stage power wave in sulfuric acid purification - HCBBS Forum
26. Do weld evaluations that meet NB/T47014 necessarily apply to pipelines? Are the thicknesses different? - HCBBS Forum
27. Issues with the shaft vibration signals of the compressor? - HCBBS Forum
28. Purchase 6 gas boilers capable of producing 6.3 MPa steam at 30 MW each - HCBBS Forum
29. Installation of the level gauge in the liquid-liquid extraction tower - HCBBS Forum
30. Have there been any recent job openings in the field of polycrystalline silicon cold hydrogenation? - HCBBS Forum
31. The sludge concentration is low, with SV30=30 (1000 ML). How can the sludge be cultivated properly? - HCBBS Forum
32. Orifice plate flow meter - HCBBS Forum
33. Cost control and green environmental protection in stamping processes - HCBBS Forum
34. Fuzzy PID - HCBBS Forum
35. Who has experience with noise reduction for Roots blowers? Please give some advice. - HCBBS Forum
36. I’m new here in Haichuan; please give me a lot of support - HCBBS Forum
37. 【First in the country】Dezhou summoned by the Ministry of Environmental Protection for inadequate emergency response to severe pollution - HCBBS Forum
38. 【Daily Question】Reissued on 12.11 – Multiple-choice question: For containers whose working medium is toxic or flammable gases, which option should be chosen? - HCBBS Forum
39. The results are usable, but there have been two errors consistently; I seek the expertise of experts to point out these errors. Thank you - HCBBS Forum
40. Summary post: Articles and drawings on environmental protection and energy conservation contributed by Haiyou - HCBBS Forum
41. Improvement in safety - HCBBS Forum
42. Can sewage be discharged directly into the cleaning port? - HCBBS Forum
43. Stainless steel pipes for oil use - HCBBS Forum
44. Selection of pipe flanges for non-ferrous metal pressure vessels - HCBBS Forum
45. How to clean the residue of glue in the electrolyzer frame more quickly - HCBBS Forum
46. Division of stress pipes - HCBBS Forum
47. Questions about blast cleaning? - HCBBS Forum
48. How to set up a mixed gas alarm - HCBBS Forum
49. Increase on the pump - HCBBS Forum
50. Does a DN300 elbow require a supervision certificate? - HCBBS Forum
51. Design principles for SIS safety instrumented systems (**under the guidance of Document No. 116 issued by the State Administration of Work Safety) - HCBBS Forum
52. Adjusting the pH value of wastewater containing high levels of calcium and chloride ions - HCBBS Forum
53. Paint brands - HCBBS Forum
54. What is the ranking of domestic thin-film evaporator manufacturers? - HCBBS Forum
55. 【Daily Question】Chemical Engineering Principles 256: Temperature (December 7) - HCBBS Forum
56. Dell R710 server shuts down without reason - HCBBS Forum
57. Consultation on Sulzer pump speed - HCBBS Forum
58. 【Daily Question】12.13 Short Answer: What precautions should be taken when installing a centrifugal pump? - HCBBS Forum
59. Centrifugal compressor bearings - HCBBS Forum
60. Approval granted for water resources for the top 10 coal chemical projects in 2015 - HCBBS Forum
61. Fluorinated check valve - HCBBS Forum
62. Registered Firefighter Exam - HCBBS Forum
63. Where can toxic gas detectors be tested? Beijing-Tianjin-Hebei region or nearby - HCBBS Forum
64. Weekly Topic December 14, 2015 - HCBBS Forum
65. Construction method for large double-shell low-temperature storage tank (120,000 cubic meters) - HCBBS Forum
66. 【Daily Question】Question from Issue 20151207 - HCBBS Forum
67. How can I change my username? - HCBBS Forum
68. One question per day--Fill in the blanks - HCBBS Forum
69. 【Picture of the Day】12.16 Let’s go with something simpler – everyone knows what the device shown in this picture is called, right? - HCBBS Forum
70. Looking for the 3rd edition of the textbook for the Professional Qualification Examination for Registered Public Equipment Engineers in the Power field - HCBBS Forum
71. The role of isolated nitrogen in reciprocating-piston compressors - HCBBS Forum
72. How to calculate the amount of corrosion inhibitors and antifreeze additives to use? - HCBBS Forum
73. The grades of the main pipe and branch pipes - HCBBS Forum
74. Two questions about pressure vessels - HCBBS Forum
75. Looking for information - HCBBS Forum
76. Alloy steel pipe - HCBBS Forum
77. 1212 Supermarket offers great discounts - HCBBS Forum
78. For equipment lined with PTFE (tetrafluoroethylene), if part of the fluorine lining is damaged, how can it be repaired? - HCBBS Forum
79. Your affair has something to do with me - HCBBS Forum
80. Damn it, let’s analyze what could be the reason - HCBBS Forum
81. Uncertainty of flow measurement and accuracy class of the flow meter - HCBBS Forum
82. December 6th, Boiler Foundation Question 112: (A certain score will be given to the top 50) - HCBBS Forum
83. Sign-in record post dated December 16, 2015 - HCBBS Forum
84. 15 pages of technical practice for Level 1 fire engineer exam - HCBBS Forum
85. 【Daily Question】Question for 20151208 - HCBBS Forum
86. Flaw detection after pipeline welding - HCBBS Forum
87. Consultation on material selection for drum manway gaskets - HCBBS Forum
88. The approval for the site selection plan of Anhui Energy Group’s coal-to-natural gas project has been granted by the Anhui Provincial Department of Housing and Urban-Rural Development - HCBBS Forum
89. Insulation for gasoline storage tanks - HCBBS Forum
90. Minimum flow requirement for Coriolis mass flow meters - HCBBS Forum
91. Why does the hot water pipe make a \"clicking\" noise? - HCBBS Forum
92. What should I do if I accidentally pressed report while rating? - HCBBS Forum
93. I would like to ask everyone: does the Siemens system of the syngas compressor need to be upgraded? - HCBBS Forum
94. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-12-16) — Points are awarded for participation - HCBBS Forum
95. Learned the ten safety rules and created a catchy rhyme about them. - HCBBS Forum
96. Service life of methanol catalyst - HCBBS Forum
97. Foxboro float level gauge - HCBBS Forum
98. Product features of plastic packaging bags and the market prospects for aluminum-plastic bag washing worldwide - HCBBS Forum
99. Welded valves with built-in straight pipe sections - HCBBS Forum
100. Latest news on Emerson 375, 475 - HCBBS Forum