Recent content by 2ndchild

hi, do you know the values of the design stress given by EN material standards? thanks.

hi, The Yield strength of the ASME A106 Gr B is 240MPa (35ksi)at 120C (250F)or less??? regards

hi, The Yield strength of the ASME A106 Gr B is 240MPa (35ksi)at 120C (250F)??? regards

hi, when we use a carbone steel pipe in H2S service, the manufacturer must consider at least 10% of material available for corrosion. with regard to European standard, the corrosion allowance exists but I don t know how I can evaluate it? thanks, Leyla

In case of 100% Eddy-current testing and no RT (radiographic testing)than z=0.85 because, 100%ET is not considered as 100%NDT http://www.outokumpu.com/pages/Page____11024.aspx ???? Leyla

hi, what is the European standard which covers the H2S service? (NACE MR0175 equivalent!) and what is the added thickness in H2S service (corrosion) for carbon and stainless steel piping ? (according to EN ISO 15156 or an other Euro standard) best regards. Leyla

OK, you're always right! best regards.

I think I can also use: for high temperature,carbone steel piping: EN 10216-1 P265TR1 EN 10216-2 P265GH EN 10217-1 ... and for low temperature, carbone steel piping: EN 10216-4 P255 ... thanks, Leyla

hi, ET means Eddy-current testing In that case,I think z=0.85 because of the current testing! isn't it?

hi, have find some equivalent grades? best regards Leyla

thank you Andrei for your answer, I visited the outokumpu'site yesterday and I m really not sure, z = 1.0 ?!! regards Leyla

abbver98, when you have 100%ET + no random test or no random + single butt, z takes the value of 1.0? thanks

hi, weld factor z as regulated in EN 13480-3 clause 4.5 takes the value of: 1.0 for 100%NDT 0.85 for random NDT 0.7 when no NDT what is the value of z when we have: (100%ET + no random test) or ( no random + single butt)? (in accordance with the EuroNorm) regards,

abbver98 thank you very much for your invaluable help

I found an other formula for high tempreture e = PS*Do / [20*f*z+P*(2-z)] and for room tempreture e = PS*Do / 20*f*z i.e. the one you gave the first time?