Saturday, September 18, 2010

Re: [MW:7083] Tube sheet to tube joint

Hi,
I said in this case with tube expansion with seal weld no need to do mockup test.still u want to do mockup then u use the actual tubesheet thickness plate with the tube and follow QW193.
 
Thanks & regards.
 
(Karthik)

Karthikeyan.S
QA/QC Manager
Getabec Energy Co.,Ltd.
379,Moo6,Soi8,Nikhomphatana,
Rayong-21180,
Thailand.
Phone: 0066 38 897035-8 (Off)
Fax: 0066 38 897034
Hand Phone: 0066 892512282


--- On Sat, 9/18/10, waman nilesh <wamannp@gmail.com> wrote:

From: waman nilesh <wamannp@gmail.com>
Subject: Re: [MW:7076] Tube sheet to tube joint
To: materials-welding@googlegroups.com
Date: Saturday, September 18, 2010, 10:15 PM

Hello Karthik,

Thanks for the reply but
1) I want to know where mock-up test are necessary & how it be done.
2) To maintain the tube expansion  percentage how much torque is require.
   Size of Tube 19.05 OD X 1.651 thk
   Thk of tube sheet is 75 mm.

With Regards,
Nilesh Waman 

On Sat, Sep 18, 2010 at 6:56 AM, Karthik <karthik6684@yahoo.com> wrote:
Hi,
You can use the existing WPS for the proposed one,since the P.Number and Group number are same.For seal weld (Tube expansion+seal weld) no need mock-up test).
Tube expansion percentage:
Light Expansion - 3% to 5%
Heavy Expansion - 8% maximum.
 
Thanks & Regards,
 
(karthik)

Karthikeyan.S
QA/QC Manager
Getabec Energy Co.,Ltd.
379,Moo6,Soi8,Nikhomphatana,
Rayong-21180,
Thailand.
Phone: 0066 38 897035-8 (Off)
Fax: 0066 38 897034
Hand Phone: 0066 892512282


--- On Sat, 9/18/10, waman nilesh <wamannp@gmail.com> wrote:

From: waman nilesh <wamannp@gmail.com>
Subject: [MW:7061] Tube sheet to tube joint
To: materials-welding@googlegroups.com, materials-welding@goolegroups.com
Date: Saturday, September 18, 2010, 12:18 AM

I have WPS qualify for plate( SA 240 TYPE 304 ) can i used for tube sheet ( SA 965 F 304L ) to tube joint with seal weld
& is it mandatory to do mock up for the same.
What percentage of expansion is required for tube ( SA 249 TYPE 304 L ) material
Size- 19.05 OD X 1.951 thk 
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