Dear Ramon Kondori Sir.
Earlier I was believing the same what you wrote in the reply.
Regarding the 3rd point u mentioned needs more clarification.,because no microstructure changes during pwht as pwht temperature is below the lower critical temperature of the metal but brittleness/hardness changes.
Please clarify your 3rd point
Sandeep.M.V
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Dear sir
Thanks for your reply and I understand your explanations.
But now please clarify how does the brittleness changes after pwht?
I think no physical properties will change without change in chemical properties.
Sandeep.m.v
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It means the reinforcement must be greater than the pipe surface n less than 1.6 mm. If it is greater than 1.6mm u can grind it for a little circumferential length, but normally the client will not allow..n itz not a good practice too..so insist the welders to weld with a reinforcement below the specified.
Binu valiyaveedu
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Dear Experts,
I am working to fabricate tie-in spools for pipeline and applicable standard is API 1104
As per API 1104: 7.8.2 Filler and Finish Beads : At nopoint shall the crown surface fall below the outside surface ofthe pipe, nor should it be raised above the parent metal bymore than 1/16in. (1.6 mm).
This means : Weld metal: the external reinforcements must not exceed the indicated dimensions ( 1.6 mm) /therefore, if external reinforcement exceed 1.6 mm, The external reinforcement must be removed to below 1.6 mm as API 1104 required.
Please help me to clarify this doubt/
Thanks/
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Dear Member(s),
Please clarify the clause of API 5L (1.3 Grades) as mentioned 'Pipe manufactured as Grade X60 or higher shall not be substituted for pipe ordered as Grade X52 or lower without purchaser approval.'
Why purchaser approval required????
Your kind opinion with justification will be highly appreciated.
B.R.Meghwal
Dy. Manager-QA/QC(ASNT Level 3,AWS-CWI & CSWIP3.1)
FERNAS Construction India Pvt. Ltd.
(A wholly owned Subsidiary of FERNAS Construction Company Inc., Turkey)
Cyber Terrace, 16th Floor, Tower – B, Building No. 5, DLF Cyber City, Phase – 3
Gurgaon – 122 002, Haryana, INDIA.
(: +91 124 4937984 (M) : +91 8860651934
Life is not about what you couldn't do so far, It's about what you still can...........
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Thanks & Regards,
?
Joydev Dalai
Sr.Engineer (QA/QC)
| P-Numbers | Base Metal (Typical or Example) |
| 1 | Carbon Manganese Steels (four Group Numbers) |
| 2 | Not Used |
| 3 | Half Molybdenum or half Chromium, half Molybdenum (three Group Numbers) |
| 4 | One and a quarter Chromium, half Molybdenum (two Group Numbers) |
| 5A | Two and a quarter Chromium, one Molybdenum |
| 5B | Five Chromium, half Molybdenum or nine Chromium, one Molybdenum (two Group Numbers) |
| 5C | Chromium, Molybdenum, Vanadium (five Group Numbers) |
| 6 | Martensitic Stainless Steels (Grade 410, 415, 429) (six Group Numbers) |
| 7 | Ferritic Stainless Steels (Grade 409, 430) |
| 8 | Austenitic Stainless Steels
|
| 9A, B, C | Two to four Nickel Steels |
| 10A, B, C, F | Various low alloy steels |
| 10H | Duplex and Super Duplex Stainless Steel (Grades 31803, 32750) |
| 10I | High Chromium Stainless Steel |
| 10J | High Chromium, Molybdenum Stainless Steel |
| 10K | High Chromium, Molybdenum, Nickel Stainless Steel |
| 11A | Various high strength low alloy steels (six Group Numbers) |
| 11B | Various high strength low alloy steels (ten Group Numbers) |
| 12 to 20 | Not Used |
| 21 | High Aluminum content (1000 and 3000 series) |
| 22 | Aluminum (5000 series - 5052, 5454) |
| 23 | Aluminum (6000 series – 6061, 6063) |
| 24 | Not Used |
| 25 | Aluminum (5000 series - 5083, 5086, 5456) |
| 26 to 30 | Not used |
| 31 | High Copper content |
| 32 | Brass |
| 33 | Copper Silicone |
| 34 | Copper Nickel |
| 35 | Copper Aluminum |
| 36 to 40 | Not Used |
| 41 | High Nickel content |
| 42 | Nickel, Copper - (Monel 500) |
| 43 | Nickel, Chromium, Iron - (Inconel) |
| 44 | Nickel, Molybdenum – (Hastelloy B2, C22, C276, X) |
| 45 | Nickel, Chromium |
| 46 | Nickel, Chromium, Silicone |
| 47 | Nickel, Chromium, Tungsten |
| 47 to 50 | Not Used |
| 51, 52, 53 | Titanium Alloys |
| 61, 62 | Zirconium Alloys |
Dear Sir,Good Day !Kindly Guide me whether the below mentioned ASME P NO's corresponds to respective Steel Types, Corrections in error if any is most thankful.This will help me in selecting Proper SFA as Per ASME section II Part C.
Steel Type P NUMBER Carbon Steel 1 Low-Alloy Steel 3,4,5A,5B,5C,6,7,8,9A,9B,9C,11A,11B,10A,10B,10C,10F Stainless Steel 6,7,8,10H,10I,10J,10K ![]()
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Dear sir According to the below statement, the crown shall be between 0mm -1.6 mm.which means the highest is 1.6mm. If its 1.6mm you may leave it, its not necessary to reduce the reinforcement. Thanks Sent from Yahoo! Mail on Android |
Dear Experts,
I am working to fabricate tie-in spools for pipeline and applicable standard is API 1104 As per API 1104: 7.8.2 Filler and Finish Beads : At nopoint shall the crown surface fall below the outside surface ofthe pipe, nor should it be raised above the parent metal bymore than 1/16in. (1.6 mm).
This means : Weld metal: the external reinforcements must not exceed the indicated dimensions ( 1.6 mm) /therefore, if external reinforcement exceed 1.6 mm, The external reinforcement must be removed to below 1.6 mm as API 1104 required.
Please help me to clarify this doubt/
Thanks/ --  To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. |
Dear Member(s),
Please clarify the clause of API 5L (1.3 Grades) as mentioned ‘Pipe manufactured as Grade X60 or higher shall not be substituted for pipe ordered as Grade X52 or lower without purchaser approval.’
Why purchaser approval required????
Your kind opinion with justification will be highly appreciated.
B.R.Meghwal
Dy. Manager-QA/QC
(ASNT Level 3,AWS-CWI & CSWIP3.1)
FERNAS Construction India Pvt. Ltd.
(A wholly owned Subsidiary of FERNAS Construction Company Inc., Turkey)
Cyber Terrace, 16th Floor, Tower – B, Building No. 5, DLF Cyber City, Phase – 3
Gurgaon – 122 002, Haryana, INDIA.
(: +91 124 4937984 (M) : +91 8860651934
Life is not about what you couldn’t do so far, It’s about what you still can...........
Lütfen bu e-postayı yazdırmadan önce çevrenizi düşünün. | Before printing this e-mail ask yourself: "Do I need a hard copy?"
Confidentiality Notice
This e-mail and the accompanying document(s) contain confidential information which is privileged and intended only for the addressee here of. If you are not the intended recipient, you are here by notified that any disclosure, copying, distribution or use of this e-mail and/or accompanying document(s) is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender at the above e-mail address.
Dear Experts,
I am working to fabricate tie-in spools for pipeline and applicable standard is API 1104
As per API 1104: 7.8.2 Filler and Finish Beads : At nopoint shall the crown surface fall below the outside surface ofthe pipe, nor should it be raised above the parent metal bymore than 1/16in. (1.6 mm).
This means : Weld metal: the external reinforcements must not exceed the indicated dimensions ( 1.6 mm) /therefore, if external reinforcement exceed 1.6 mm, The external reinforcement must be removed to below 1.6 mm as API 1104 required.
Please help me to clarify this doubt/
Thanks/
Sandip,
PWHT is a broad based term which applies to all welds. For C.S and LAS the PWHT's involved in common fabrication are :-
|
