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Welding Procedure Specification for review

Welding Procedure Specification for review

Welding Procedure Specification for review

(OP)
Hello everyone, here are the variables and information about the WPS, let me know what you think: 4130 to the same.

1. Base metals: ASTM A-510-06 GRADE 4130 to the same
2. Purpose: For welding the last API flanges on a wellhead
3. filler metals: GTAW (ER80SNi-1)root and hot pass, then Flux Core (E71T-12M) fill and cap
4. Pre-heat: 300 F minimum
5. PWHT: 1250+-25F 1hr/inch of thickness, but not less than 1.5hr
6. Base metal thickness: 0.600"
7. Thickness range qualified: 0.1875" - 1.200"
8. Charpy Impact testing: None (No temperature; service or ambient is anticipated to get below -20F)
9. Position and progression: All and Upwards
10. Additional question: At what temperature and/or thickness do I worry about Charpy Impact testing for this procedures.

Thank you very much for your help!  
 

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