English — Forum #723 (Page 7/642)

1. Who has the \"dimethyldisulfide\" vulcanizing agent? - HCBBS Forum
2. Regarding motor shaft play - HCBBS Forum
3. XF 480.2-2004 General technical requirements for fire safety signs – Part 2: Conventional fire safety signs - HCBBS Forum
4. Environmental Protection Daily Tip 8.06: Reward for participation is 3 points, plus an additional 5 points for answering correctly - HCBBS Forum
5. What are the “mosts” of your devices? - HCBBS Forum
6. Issues with filtration and washing after the Grignard reaction - HCBBS Forum
7. I need help determining whether the channels in the trays of pumps, unit oil stations, etc. should be filled with grout - HCBBS Forum
8. My Essay on Language and Writing Standards - HCBBS Forum
9. Sign-in record post from May 3, 2016 - HCBBS Forum
10. Calculation of load cell accuracy - HCBBS Forum
11. 【Joint Study*】【Civil Engineering Version 20160201】 - HCBBS Forum
12. Should one leave the company if it’s not profitable? - HCBBS Forum
13. What material should be used for the wastewater discharge pipes in laboratory benzene analysis? - HCBBS Forum
14. (Genuine version) HG/T 21629-2021 Standard Drawings for Pipe Supports - HCBBS Forum
15. sleep - HCBBS Forum
16. Seeking advice from the teacher - HCBBS Forum
17. What is the night shift allowance at your company? - HCBBS Forum
18. 【Haichuan Chemical Joke Shop】074: If you don’t study hard, *you’ll have to sweep the streets - HCBBS Forum
19. Materials for producing heat packs - HCBBS Forum
20. 35GrMoA - HCBBS Forum
21. AMP (2-amino-2-methyl-1-propanol) - HCBBS Forum
22. Repair of mechanical seals in industrial pumps - HCBBS Forum
23. Vault tank Design pressure Test pressure - HCBBS Forum
24. Storage and Transportation Technology: [Weekly Topic] November 4-3 to 4-10 – The necessity of remote pump control and implementation methods - HCBBS Forum
25. Effect of pipe diameter change on the measurement of Yokogawa vortex flowmeters - HCBBS Forum
26. What are the key points for inspecting safety valves, glass plate level gauges, and mechanical vent valves? - HCBBS Forum
27. Various symptoms indicate excessive aeration, but the DO in the aerobic tank is below 1 mg/L, with only the end section reaching 3 mg/L - HCBBS Forum
28. 【Daily Question】2015.09.09 Fault Handling (2 Wealth points for replying; +3–8 additional Wealth points for a correct answer) - HCBBS Forum
29. What are the fire safety distance requirements between underground ethanol storage tanks and other buildings? - HCBBS Forum
30. There was an exam - HCBBS Forum
31. Online inspection of buried double-layer pipelines in gas stations - HCBBS Forum
32. I’m a beginner; please give me some guidance, experts - HCBBS Forum
33. How to calculate superheated steam and saturated fuel consumption - HCBBS Forum
34. Carbon tetrachloride consumption in R240 production - HCBBS Forum
35. How does the central control system enable the disconnection of circuit breakers in emergency situations? - HCBBS Forum
36. Seeking help with the testing of demulsifying ability of gasoline detergent - HCBBS Forum
37. How is the operating pressure of a pressure vessel determined? - HCBBS Forum
38. What is the distinction in the medium codes for steam in the process flow diagram? - HCBBS Forum
39. Differences between fluidized-bed hydrogenation and suspended-bed hydrogenation - HCBBS Forum
40. What parameters are mainly adjusted during different coking cycles? - HCBBS Forum
41. 【Daily Question】In-depth Processing 20160810 Short Answer: Why must the motor’s casing be grounded? - HCBBS Forum
42. Early autumn - HCBBS Forum
43. Advances in coal chemical gasification technology and development recommendations - HCBBS Forum
44. Happy Mid-Autumn Festival - HCBBS Forum
45. Daily Safety Technology Quiz (Single-choice Question) (2016.9.6) - HCBBS Forum
46. Seeking help regarding error codes for the speed protection card of German Braun appliances - HCBBS Forum
47. Advantages and disadvantages of oil sump lubrication and oil mist lubrication for rolling bearings - HCBBS Forum
48. Fenton questions regarding chromium-containing wastewater - HCBBS Forum
49. 【Daily Topic】【Civil Engineering Version 20160619】 - HCBBS Forum
50. Sulfur Daily Question, April 28th------5 wealth for participation, 10 wealth for correct answers - HCBBS Forum
51. Seeking an answer - HCBBS Forum
52. One question per day (1122) - HCBBS Forum
53. Weekend Summary of Shandong Local Refineries - HCBBS Forum
54. Seeking advice on the material issues of distillation towers - HCBBS Forum
55. The consulting engineer exam will be suspended for one year this year - HCBBS Forum
56. Experience and tips on the use of wireless instruments in tank areas - HCBBS Forum
57. Which evaporator is more economical for the concentration, crystallization, and separation of sodium oxalate in alkaline water? - HCBBS Forum
58. One Question per Day on Synthetic Ammonia (Series 60) - HCBBS Forum
59. Questions about MVR evaporators - HCBBS Forum
60. Which parameters need to be tested for reformed naphtha C7+ as a PX raw material? - HCBBS Forum
61. Shanghai Kent Flow Meters - HCBBS Forum
62. How to separate methanol and dimethyl ether from water - HCBBS Forum
63. Instructions for the boiler dust collector - HCBBS Forum
64. What are the common high-concentration, high-COD, and high-salt wastewaters currently used in industry? - HCBBS Forum
65. Regarding the issue of shutting down the axial flow fans in the machine room - HCBBS Forum
66. What is the function of a U-tube flow meter? What is the purpose of the U-shaped part in the U-tube? - HCBBS Forum
67. What is the optimal pH value for the phosphating wastewater treatment tank? - HCBBS Forum
68. Weekly topic: What would you like to see in the methanol sector? 2015.07.20--07.27 - HCBBS Forum
69. Regarding the steam drive and electric drive of air separation turbines - HCBBS Forum
70. Problems with using double-flange differential pressure transmitters for level measurement - HCBBS Forum
71. I would like to ask the experts about solenoid valves and emergency shut-off valves - HCBBS Forum
72. What makes imported instruments expensive? Such as Mersoniland, Adams, BETTIS - HCBBS Forum
73. For the design of saddles for horizontal vessels with high operating temperatures - HCBBS Forum
74. 【Daily Question】In-depth Processing 20160828 Short Answer Question: What does a center-opening valve in a control valve mean? - HCBBS Forum
75. 【December 30 Boiler Weekly Question】Multiple-choice question - HCBBS Forum
76. Seeking information on the process for producing methyl acetal from methanol - HCBBS Forum
77. The 3rd one produced 3 consecutive numbers - HCBBS Forum
78. How is the Haihua Alkali Plant doing? - HCBBS Forum
79. Manual grinding and mechanical planing of gas valves - HCBBS Forum
80. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 207 - HCBBS Forum
81. Environmental Protection Daily Quiz 12.27: Participate for prizes; 3 correct answers and you’ll get another 3 as a reward - HCBBS Forum
82. What are coal water slurry additives made of? - HCBBS Forum
83. Reflux ratio of the reboiler at the bottom of the distillation column - HCBBS Forum
84. Environmental Protection Daily Quiz 12.8: Participate for prizes; 3 correct answers earn an additional 3 prizes - HCBBS Forum
85. flow rate - HCBBS Forum
86. Low-temperature ball valve’s - HCBBS Forum
87. 【Weekly Topic】1.4~1.10 Why do areas where phase changes occur corrode easily? - HCBBS Forum
88. What methods can be used to prevent freezing in a vertical water storage tank that is 12 meters high and has a capacity of 50 cubic meters during winter? - HCBBS Forum
89. I still can’t figure out the difference in thickness between the tube sheet and the tube sheet flange - HCBBS Forum
90. Gasification Daily Question: 11-15-2016 – Process analysis question (5 points for participation, 10 points for a correct answer) - HCBBS Forum
91. Regarding temperature transmitters - HCBBS Forum
92. What environmental pollution issues exist in crane cabriages? - HCBBS Forum
93. The environmental damage in coal chemical industry stems from winning bids at low prices - HCBBS Forum
94. How do you deal with the pulp in the waste pulp tank? - HCBBS Forum
95. Who can recommend some flowmeters for measuring low flow rates at low velocities? - HCBBS Forum
96. Inspection of furnace tubes in coking heaters - HCBBS Forum
97. The relationship between tank truck platforms and loading/unloading stations, as well as dip pipes - HCBBS Forum
98. Regarding the storage of ethylene glycol - HCBBS Forum
99. Do you think the new search function is useful? - HCBBS Forum
100. Operating temperature of buried tanks - HCBBS Forum