几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 - 查看单个帖子 - are you specifying pipe or hss round sections

are you specifying pipe or hss round sections?
i still specify pipe at 35 ksi (astm a53 b) probably because i'm just stuck in my ways.
i'm curious if other firms have been updating their standards to incorporate a switch from pipe to hss (a500) callouts.
i have looked at threads on this site, other sites, looked at availability charts, as well as looking at the aisc web site and they all say its available for use. however, i called a few other firms and they still spec pipe at 35 ksi.
i think we'd all like to save the owner 31% steel cost in short columns ([46-35]/35). so are you specifying pipe or hss round sections?
check out our whitepaper library.
oops, i should have typed 20% savings (42-35)/35 as astm a500 b (42 ksi) is more available than astm a500 c (46 ksi)
we specify hss - based on astm a 500 grade b - 46 ksi yield.
astm a500 grade b fy=42 ksi fu = 58 ksi
astm a500 grade c fy=46 ksi fu = 62 ksi
see:
i still specify pipe - a53
arneg - you're correct that the round hss grade b is 42 ksi. i was wrongly thinking in terms of square/rectangular hss, where the grade b is 46 ksi.
thanks for the nice link.
is there a significant cost difference for manufacturing round hss versus pipe?
i don't specify pipe much at all. others at my firm use only pipe in their specs.

2009-09-07, 12:48 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	are you specifying pipe or hss round sections are you specifying pipe or hss round sections? i still specify pipe at 35 ksi (astm a53 b) probably because i'm just stuck in my ways. i'm curious if other firms have been updating their standards to incorporate a switch from pipe to hss (a500) callouts. i have looked at threads on this site, other sites, looked at availability charts, as well as looking at the aisc web site and they all say its available for use. however, i called a few other firms and they still spec pipe at 35 ksi. i think we'd all like to save the owner 31% steel cost in short columns ([46-35]/35). so are you specifying pipe or hss round sections? check out our whitepaper library. oops, i should have typed 20% savings (42-35)/35 as astm a500 b (42 ksi) is more available than astm a500 c (46 ksi) we specify hss - based on astm a 500 grade b - 46 ksi yield. astm a500 grade b fy=42 ksi fu = 58 ksi astm a500 grade c fy=46 ksi fu = 62 ksi see: i still specify pipe - a53 arneg - you're correct that the round hss grade b is 42 ksi. i was wrongly thinking in terms of square/rectangular hss, where the grade b is 46 ksi. thanks for the nice link. is there a significant cost difference for manufacturing round hss versus pipe? i don't specify pipe much at all. others at my firm use only pipe in their specs. __________________ 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]