Seeking standards for the small outer diameter series of pipes and pipe fittings
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As recent projects have involved the use of pipes and fittings with a small outer diameter series, the company does not have any standards or specifications for this purpose. I hope Haiyou can provide some help. I am extremely grateful.
Pipe size series standards (HG20553): Series A belongs to the “large outer diameter series”, while Series B belongs to the “small outer diameter series”. In the standard system for use in the machinery industry, pipe sizes generally fall under the “small outer diameter series”. In the standard system for use in the petrochemical industry, the pipe size series standards (SH3405) mostly belong to the “large outer diameter series””
I am also involved in this; I hope experts can share the standards or guidelines
In the thread titled “Who has the specific data for GB/T8163 A/B series?”, there is information related to tubes with large outer diameters/small outer diameters; it can be found at http://bbs.hcbbs.com/viewthread.php?tid=411794&page=1#pid2199903. I’ve posted it here for your convenience, hoping it will be helpful to you. Units below: mm. DN 6, 8, 10, 15, 20, 25, 32 – Outer diameter of pipe: Series A: 10, 14, 17, 22, 27, 34, 48; Series B: 18, 25, 32, 45. DN 40, 50, 65, 80, 100, 125, 150 – Outer diameter of pipe: Series A: 48, 60, 76, 89, 114, 140, 168; Series B: 45, 57, 76, 89, 108, 133, 159. DN 200, 250, 300, 350, 400, 450, 500 – Outer diameter of pipe: Series A: 219, 273, 325, 356, 406, 457, 508; Series B: 219, 273, 325, 377, 426, 480, 530. DN 550, 600, 700, 750, 800, 900 – Outer diameter of pipe: Series A: 559, 610, 711, 762, 813, 914; Series B: 630, 720, 762, 820, 920. Last edited by *ao*a206 on 2009-3-11 at 21:58.]
Refer to GB12459–2005 for large-diameter welded pipe fittings, GB13401–2005 for pipeline standards, and GB8163–2008, which came into effect on April 1 of this year
I need to use it now too; I hope someone will reply as soon as possible.