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As stated in the ASTM A380; stainless steel has a very thin and stable oxide film rich in chrome. This film reforms rapidly by reaction with the atmosphere if damaged. If stainless steel is not adequately protected from the atmosphere during welding or is subject to very heavy grinding...

Pipes will be according to ASME B31.3. Diameter is varies between 1/2" to 20". Could find specificly for inside weld, thats why I opened a new topic. Thanks,

There is no specific extra standard other than internation ones. Yes we will visually inspect all welds. For inside of pipe, isnt natural oxidation is enough, do we need passivation treatment. Could you give me the section from ASME BPE, couldnt find specific detail for that. Thanks,

Dear experts, My question is, after welding our clint wants us to do pickling and passivation on the welded A312 TP316L stainless steel. But they want to do pickling on the inside of pipe as well (weld area). The thing is we are purging weld from inside until weld is finished and cooled down...

Dear experts, My question is, after welding our clint wants us to do pickling and passivation on the welded A312 TP316L stainless steel. But they want to do pickling on the inside of pipe as well (weld area). The thing is we are purging weld from inside until weld is finished and cooled down...

Dear all, I checked the API 1104 but couldnt find anything explains this directly. Normally in ASME Sec.IX when you ran a PQR with butt weld you are qualified to fillet welds also. But in API 1104 in essential variables section code only states joint design like V to U bevel. Is there any...

It should be 7010-G, not 7018. my bad.

For X60 material, how about E6010 root then 7018 fill&cap. Other than good penetration is there other pluses to use 6010?

denlow60, Pipe is 20 inch probably standard sch. 9.53mm. X60 material. Regards,

Yes denlow60, Their mechanical strenghts are different and normally I wouldn't prefer to use SFA 5.1 on X60 pipe. But due to the procurement issues this was my only choice and looks like API 1104 allows it. Regards,

Good morning, I am working with piping company which specialized on only aboveground pipeworks. And there is an upcoming pipeline work that we will possible get awarded. Our old procedures are outdated, could anyone explain me current pipeline works. I mean is 2-3 group stick SMAW welding...

Good morning, I am working with piping company which specialized on only aboveground pipeworks. And there is an upcoming pipeline work that we will possible get awarded. Our old procedures are outdated, could anyone explain me current pipeline works. I mean is 2-3 group stick SMAW welding...

Thank you, mine is X60 material so I can change electrode in same group.

Good evening, I have a procedure based on stick SMAW electrode E7018-G-H4R SFA 5.5 numbered. Am I allowed to use SFA 5.1 numbered E7018-1 H4 electrode instead. Is it strictly essential variable or are there some variations. Code is API 1104, but couldnt find in it. Thanks,

Dear all, Im kinda stuck at welder qualification of branch welds. We have a nipoflange which connects to pipe's surface directly (with bevel and full penetration) but since it is not a butt weld and has nearly 20mm thickness I couldnt find anything related to this in ASME SecIX. Is this...

Yes, both materials requires same filler material. Thanks for the reply.

Dear all, I have a question regarding P45 materials welding. I have a qualified WPS that made with UNS N08020 (SB729) PQR. And I want to use this procedure on Alloy 20 which is UNS N08825 numbered material. According to ASME you can weld the materials that are in the same P number and G number...

Thanks for the tips, I argued with them about this because our welders already have certificates from third party company about what material or SDR they can weld. I think what they really mean is first production test. Regards,

Thanks for the responses, The thing is our HDPE welding machine is not automatic (butt fusion type), welder is cutting and heating the surfaces by himself. And our client considers them as a welder not as an operator. I couldnt find anything related to this in internet. And they want to...

Good morning, I have a question regarding welder qualification (performance records) procedures for HDPE pipe electrofusion butt weld. I couldnt find any reference in ASME standards for; - After welder test, qualified diameters, thickness range - Qualified materials (I will use HDPE PE 100 SDR...