Hi MOHAMMED too you can use Root pass with E7010A1 and rest by E8018G by uphill progression, We welded with it welding procedure.the 7018 stress is very close the base metal stress, is better use 8018.Agustin
De: Prabhu Kumar L <l.prabhukumar@saipem-india.com>
Para: materials-welding@googlegroups.com
Enviado: mar, junio 8, 2010 3:37:30 AM
Asunto: [MW:5463] RE: 5437] welding Pipe API 5LX52 to Flange ASTM A105
Dear Mohammed,
You can follow any one of the option for welding of X52 to A105.
- Root pass with E6010 and rest by E7010 by uphill or dollymix (root-uphill and rest-downhill) progression.
- Root pass with E6010 and rest by E7018 by uphill progression
No restriction on use of cellulosic or low hydrogen electrodes for welding of pipe to fittings/ flanges. However, for any repair welding, it is recommended to use low hydrogen electrodes in order to reduce hydrogen induced cracking problems.
Regards,
L. Prabhu kumar,
Sr. Principal Engineer,
Equipments & Materials Dept.,
Saipem India Projects Limited,
Nungambakkam High Road, Chennai - 600 034, India .
Tel:+91 44 43906588, Ext.: 588, Fax:+91 44 66840345,
Mobile Ph. No.: +91 9003010978.
From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of mohammed helal
Sent: Monday, June 07, 2010 11:09 PM
To: materials-welding@googlegroups.com
Subject: [MW:5437] welding Pipe API 5LX52 to Flange ASTM A105
For welding Pipe API 5LX52 to Flange ASTM A105 in a pipe line project we should use 7018 or 7010 is enough to give us the desired quality.( i think that fitting to fitting we have use 7018 but fitting to pipe, can we use 7010)
Eng.MOHAMMED ABD EL-AZIM HILAL
MECHANICAL ENGINEER
CSWIP 3.1 - NDT (RT- MT - PT)
OTISHAN CONSULTANT ENGINEER
00966-502612218 - 0020103124557
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