【Daily Question】20160421 Coating thickness of composite tube sheets (top 50 participants + 2 bonuses)
Thread Content
This post was last edited by humanrzm on 2016-4-25 08:38. To increase the popularity of the heat exchange forum, 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, for composite tube sheets welded to heat exchange tubes, the thickness of the coating layer should not be less than 3 mm. ( ) Answer: Correct; for details, see GB/T151-2014, clause 7.4.2.3. Other content: AC version of heat exchange equipment – “One question per day” competition post (prizes for participation; valid indefinitely) http://bbs.hcbbs.com/thread-1320941-1-1.html “【Mechanical Section】Recruitment for moderators & technicians; applications and referrals are welcome【Valid indefinitely】If you’re interested, come ahead! 】http://bbs.hcbbs.com/thread-1568748-1-1.html 【Mechanical Section】Call for collection of essential knowledge articles http://bbs.hcbbs.com/thread-1389197-1-1.html Haichuan’s “Thanksgiving Season” sharing event http://bbs.hcbbs.com/thread-1579172-1-1.html
True or False: Standards specify that for composite tube sheets welded to heat exchange tubes, the thickness of the coating layer should not be less than 3 mm. (Incorrect) Please refer to 6.6.3.2 and 6.6.3.3 in GB/T151-2014; this requirement applies only when expansion joints are used for strength welding.
True or False: Standards specify that for composite tube sheets welded to heat exchange tubes, the thickness of the coating layer should not be less than 3 mm. ( √ ) For details, see Clause 7.4.2.3 of GB/T151-2014.
The standards specify that for composite tube sheets welded to heat exchange tubes, the thickness of the coating shall not be less than 3 mm. (Correct)