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Hi Guys, We have a bit of an issue regarding the interpretation of a single point in an EN standard. The detail for now in unimportant, but what I would like some clarity on, or reference to is the following. It was always my understanding that if something could be interpreted from an EN...

Hi guys, hope someone can offer some advice here. What I would like to know is if there is a limit to the amount of PQR's which can be used for a single WPS? We are doing a project for the offshore sector, and have recently had a contractor who had quite a complex weld to do. In their WPS they...

Hi Guys, just came across a strange looking defect in a weld which I have not seen before. I would be very interested to know if anyone has seen the likes of this before, or can shed some light on to what we are looking at here. A little background. The parent material is S355 TMCP steel...

Hi Guys, I know that there are plenty of threads about this subject, and probably all recommend that 304ss not be used at all. My question is relating to the use of this grade of stainless on doors in an environmentally controlled room within the topside. My own opinion is that this material...

Hi Guys, we are buying some Hang-off systems for the offshore sector. Our supplier usually sells these as galvanised finish. Now they are trying to sell us Micro zinc processed finish. We are not too familiar with this system so would like to know if anyone is familiar with it, know of...

Hi there guys, I'm not altogether familiar with mechanical testing so hoping you guys can help, it is really only a general question. We sent some welded (Sub-arc and flux-cored GMAW) samples off for mechanical testing. There is nothing too special in the materials 350MPa C-Mn Steel with...

Hi Guys, we are having a little difficulty with an interpretation of a BS EN ISO standard. I know there is a standard which determines the rules by which a standard is written and interpreted, does anyone happen to know what it is regards Declan

Guys, we are having a little debate in work with relation to weld positions. The attached doc shows the weld prep, which is a two sided butt weld, which is back-gouged after first few passes. The weld is approx 6 feet off the ground. we reckon the position is horizontal, our client reckons it...

Hi Guys, Im doing a little metallurgical research here with a 1966 version of De Ferri Metallographia and just want to get a rough comparison of the grain structures of certain steels. Obviously S355 wasn't around then, so am hoping some of you slightly more mature guys can give me a hand here...

Hi guys, Im doing a couple of jobs at the moment using some strange steel designations that I am not entirely familiar with.... Does anyone have or know where to get a full list of designations for EN Steels.ie, exactly what each designation means! I am talking specifically about the prefix...

Hi Guys, we are working on a gas line, quality management standard is 3834-2, what I would like to know is where does it say how you decide to use 3834-2, 3 or 4. I have gone through a pile of standards looking for a specific answer to this, but none can be found. Gas spec is BS EN12732 which...

Hi guys, need a little advice here. We are having a little difficulty with owners reps at the moment over the time taken from blasting sections of steel to the application of primer coat. The steel is bog standard - nothing special. Surface finish is SA2.5 The general rule of thumb (as I...

Guys, we just ran some production test plates as part of our current welding project. On one of the samples the hardness results are a little high. We have one reading (out of 45) which is 378Hv. Our max allowable is 350Hv. We are working to DNV C401. My query; There were 3 readings taken in...

Guys, can any of you recommend a reputable supplier in the UK for small bore 316 stainless. I know its pretty bog-standard stuff, but our client is very specific that none of it comes from China regards Declan

Hi guys, not sure if anyone can help here, but here goes anyway. we have been asked by a client to take ferrite readings on some duplex samples.....no problem...we have a fischer ferritescope. The client has stated that the procedure for taking ferrite readings on duplex is completely...

Guys, we recently did some PMI work on 316 stainless, and found that there was an amount of Cu in it (<1% in all samples). We didnt make a big deal, but the client queried it saying that there is not supposed to be Cu in 316 stainless and that it could causes poor surface finishes. I know...

Guys, I have this crack formation, and was wondering if anyone has seen anything comparable. I havn't had a chance to test yet, but am pretty sure its fatigue. I just havn't seen this pattern before. It is inside a cyclone, towards the top, the cyclone is anchored approx 1.5Metres below the...

Hi guys, just got asked whether accidental local overheating and quick cooling of pipe can change the structure to martensite, I said probably not, but my question to you guys is... What are the conditions ( if any ) that could possibly change a structure ( lets just assume A106 gr.B) from...

Hi guys, I have a job coming up to take a site replica of 304ss welded to x20(11Cr, 1Mo, 0.25V). I usually use vilella's for x20, p91 etc....and oxalic for 304, but have not come across two together before. Has anyone done this or something similar. I'm thinking I will probably need to take...

I wonder if anyone could offer a little advice on how to etch 304 in-situ. I need to take a surface replica on a piece of 304 welded to X20 pipe. I know that Vilella's or marbles will do the X20, but the 304 I am a little concerned about. I do a lot of lab based SS so am familiar with 10% Oxalic...