denil
Mechanical
- Sep 6, 2004
- 3
Dear All,
In our spec. for VHS requirement (Press.=117 Barg, Temp.=519 deg. C), we need heavy wall thickness pipe Forged & Bored, BE, ASME B36.10M, ASTM A369 Grade FP22, with thickness and size :
* NPS 30" , thickness = 63.5 mm
* NPS 36" , thickness = 76.2 mm
There is one Bidder who was offering us an option as below :
* Pipe EFW, ASTM A691 Grade 2-1/4 Cr, Class 22 (welded pipe with sress relieved)with thickness tolerance +/- 0.3 mm.
Anybody can help me, is it technically acceptable or not ?
I have read the ASTM A691 standard. It clearly mentioned that thickness cover up to 75 mm only.
Is there any other requirement if we accept this offered material ?
Please give me suggestion and explanation.
Thanks and regards,
Denil
(green man)
In our spec. for VHS requirement (Press.=117 Barg, Temp.=519 deg. C), we need heavy wall thickness pipe Forged & Bored, BE, ASME B36.10M, ASTM A369 Grade FP22, with thickness and size :
* NPS 30" , thickness = 63.5 mm
* NPS 36" , thickness = 76.2 mm
There is one Bidder who was offering us an option as below :
* Pipe EFW, ASTM A691 Grade 2-1/4 Cr, Class 22 (welded pipe with sress relieved)with thickness tolerance +/- 0.3 mm.
Anybody can help me, is it technically acceptable or not ?
I have read the ASTM A691 standard. It clearly mentioned that thickness cover up to 75 mm only.
Is there any other requirement if we accept this offered material ?
Please give me suggestion and explanation.
Thanks and regards,
Denil
(green man)
