-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com]On Behalf Of Aarpee
Sent: Friday, September 12, 2008 9:57 AM
To: Materials & Welding
Subject: [MW:1105] Hydrotest of Piping with valves
It is demanded to conduct a Hydrotest in assembled condition which
includes piping,Ball valves etc.What precautions need to be taken with
respect to valves during the hydrotest?.Hydrotest pressure is about
140 Kgs/sq.cms with a holding period of 4 hrs.
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