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,
Tel:+91 44 43906588, Ext.: 588, Fax:+91 44 66840345,
Mobile Ph. No.: +91 9003010978.
From:
Sent: Monday, June 07, 2010 11:09 PM
To:
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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