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carbon steel angle
is a-36 steel angle a good choice for round duct flanges.
the duct size is 70 1/4" o.d.
the duct is made of 1/8" thick astm 515 gr 60
the duct carries air @ 662 degrees f.
the angle size is 2" x 2" x 1/4"
check out our whitepaper library.
it would probably work but i've never heard of using a36 shapes for duct flanges.
buckhead,
you are probably using astm 515 as the duct is supposedly carrying hot air. if this is the argument, you have to use astm 515/ 516 or similar material for the flanges as well because they will also be subjected to the same (depending upon wherether the flanges can also act as fins and are in open) temperature. i am not saying a-36 wont work, only that the arguments of using different materials for ducts and stiffeners should be well found if your client is as fussy as mine usually are.
flame

2009-09-07, 10:57 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	carbon steel angle carbon steel angle is a-36 steel angle a good choice for round duct flanges. the duct size is 70 1/4" o.d. the duct is made of 1/8" thick astm 515 gr 60 the duct carries air @ 662 degrees f. the angle size is 2" x 2" x 1/4" check out our whitepaper library. it would probably work but i've never heard of using a36 shapes for duct flanges. buckhead, you are probably using astm 515 as the duct is supposedly carrying hot air. if this is the argument, you have to use astm 515/ 516 or similar material for the flanges as well because they will also be subjected to the same (depending upon wherether the flanges can also act as fins and are in open) temperature. i am not saying a-36 wont work, only that the arguments of using different materials for ducts and stiffeners should be well found if your client is as fussy as mine usually are. flame __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]