Saturday, August 20, 2011

Re: [MW:12285] ASTM A 193 Gr B7 to B16

Mr Samir,
The shell side and tube side pressures are 37/39 kg/cm2
Temperature on shell side in/out: 246/120 deg C
Tube side in/out: 101/229 deg C
This exchanger is a U-tube bundle exchanger
Thickness of tube sheet is 210 mm,1290 OD, weight: 1490 kgs
Thickness of channel flange: 190mm
Thickness channel bonnet:  36/32
Weight of channel bonnet is 1820 kgs.
regards


From: "SAMIR THAKKAR" <prabhasteel.samir@rediffmail.com>
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: 08/17/2011 12:57 PM
Subject: Re: [MW:12246] ASTM A 193 Gr B7 to B16





Mr.Prasad,
may i know what is the pressure in HE.??? AND what is the thickness of CH. cover ???

SAMIR THAKKAR
(PRABHA STEEL IND.)


From: M S R K S Prasad <MSRKSPrasad@nagarjunagroup.com>
Sent: Sat, 13 Aug 2011 16:53:57
To: materials-welding@googlegroups.com
Subject: [MW:12205] ASTM A 193 Gr B7 to B16

Dear members,

I am thinking of changing MOC of one of the exchanger channel cover bolts from B7 to B16 as the exchanger channel cover is leaking very frequently. Whenever it leaks we tighten it manually the leak minimizes after few days it
resurfaces.In each tightening  the nuts are moving by about 10 to 15 deg.

I request members to suggest whether the choice of B16 is OK are any other bolting material is better than B16 is available.

with regards

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No comments:

[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

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