【Daily Question】20160511: Corrosion margin for steel plates used in the containers and housings of NaOH solution media (first 50 entries + 2 bonus points)

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This post was last edited by humanrzm on 2016-5-12 at 10:05. In order to increase the popularity of the heat exchange section, a \"Question of the Day\" activity has been introduced there; this helps to foster an active atmosphere for technical exchanges while also providing members with financial rewards. 【Daily Question】True or False: According to standards, the corrosion margin for steel plates used in the construction of welded chemical process vessels made of carbon steel and low-alloy steel, which are used to contain NaOH solutions, should not be less than 3 mm. ( ) Answer: Correct; for more details, see HG/T20581-2011 7.8.1. Other information: AC version of heat exchange equipment – “One Question per Day” competition (prizes available for participation; valid on a long-term basis). http://bbs.hcbbs.com/thread-1320941-1-1.html “【Mechanical Section】Recruitment for moderators and technicians; applications and referrals are welcome. [Valid on a long-term basis] If you’re interested, come ahead!” 】http://bbs.hcbbs.com/thread-1568748-1-1.html 【Mechanical Section】Collection of Essential Knowledge http://bbs.hcbbs.com/thread-1389197-1-1.html Haichuan’s “Thanksgiving Season” Sharing Event http://bbs.hcbbs.com/thread-1579172-1-1.html Competition for “Most Active Users and Weekly Stars” in the Mechanical Section http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1482753&page=1&extra=#pid14468655