Container and Storage Devices Section: [Daily Question] 2011.05.03

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This post was last edited by salesment on 2011-5-3 07:54. 1 Multiple-choice question. GB150 specifies that in ( ) situations, the corners of the inner diameter of the plug-in fitting should be rounded off. A. High-pressure vessels B. Pressure vessels subjected to fatigue loads C. Cryogenic pressure vessels D. Vessels with a standard tensile strength limit of σb > 540 MPa. 2. Multiple-choice question: For a pressure vessel designed for a temperature of -50°C, which steel grades can be used for its shell? ( ) A. 16MnDR B. 09MnNiDR C. 15MnNiDR Answer: 1. B, C, D 2. B. 1: Those who participate and answer correctly will receive a reward; the maximum number of points awarded is 50. Reply ； 2: Please hide your replies. The method for hiding them is: http://bbs.hcbbs.com/thread-492556-1-1.html. Those who do not hide their replies or edit them after posting will not be awarded a reward ； 3: Please actively provide one question per day at http://bbs.hcbbs.com/thread-781748-1-1.html