Vadivel,
ASME B 16.34 is the default standard for welded valves in Non Refining Industry. API has a set of standards, mainly based on ASME documents , which're used in the refinning and petrochemical industry(see the link below)
As the environments in refining/ petrochemicals are corrosive, it's often advisable to select the welding consumables of matching chemical composition, mechanical properties and thus meeting the corrosion resistance (ASTM A 262, Practice B,C,D or E etc). This applies primarily to the fluid bearing/wetted surface.
In many instances the OEM or owners' data sheet specifies the welding consumables to be used, vis a vis the corrosion resistance and corrosion testing requirements as applicable.
As you can see below the nominal grades of the stainless steel used for valves are very specific.
Welding electrodes must match the base metal, and meet the IGC test as required.
Hope it clarifies the basics.
Thanks.
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
- http://unitedvalve.com/2011/11/01/valve-standards-in-the-petrochemical-refining-industry/
- http://www.valvemagazine.com/
From: Vadivel Mahadevan [mailto:vadivelmahadev@gmail.com]
Sent: Wednesday, September 17, 2014 2:02 AM
To: pgoswami
Subject: Re: FW: [MW:21913] SS Filler wire selection
Sent: Wednesday, September 17, 2014 2:02 AM
To: pgoswami
Subject: Re: FW: [MW:21913] SS Filler wire selection
Sir,
I am from a Valve Industry, and this welding comes in retaining seat ring with the valve body and it is a fillet joint.
These valves are supplied to Relaince Industries. Our valve design doesn't speak about the welding but I feel it should follow Sec.VIII Div.1 as it is a pressure vessel. Yes to IGC test. Practice B - 60 mills /yr max.
Regards
Vadivel.M
07829007400
On Tue, Sep 16, 2014 at 5:35 PM, pgoswami <pgoswami@quickclic.net> wrote:
What's the design code? what's the process environments, what's the welding design requirements, .... Ferrite, IGC testing etc..You need to consider all these.Appreciate your inputs.Thanks.Pradip Goswami, P.Eng,IWEWelding & Metallurgical SpecialistOntario, Canada
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george.dilintas@gr.bureauveritas.com
Sent: Tuesday, September 16, 2014 7:37 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:21913] SS Filler wire selectionI do not see any reason for 309. There is no risk for low FN and hot cracking.
You may use 309, it will harm your pocket only if you have a lot of welds.
You can go with 316L with no problem
If you should weld 316L to carbon steel, then 309 would be mandatory to avoid low FN and hot cracking
best regards
Dr. Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)Vadivel Mahadevan ---16/09/2014 07:44:37---Hello Dr. Georgios,
From: Vadivel Mahadevan <vadivelmahadev@gmail.com>
To: materials-welding@googlegroups.com
Date: 16/09/2014 07:44
Subject: Re: [MW:21905] SS Filler wire selection
Sent by: materials-welding@googlegroups.com
Hello Dr. Georgios,
Can I use the same ER316L for joining, CF3 with F316L combination.
Do we call this as a Dissimilar joint?
I presume it is not, as it falls in the same P No., but some seniors in my organisation says it is a dissimilar metal, hence ER309LMo. to be used instead of ER316L.
Regards
Vadivel. M
On Wednesday, September 10, 2014 12:09:36 PM UTC+5:30, George Dilintas wrote:
I would say YESbest regards
Dr. Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)
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