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  1. Calidad

    Bolts Values for ASTM A-193 B7 in AD MERK Code

    Thanks ijzer for your promptly answer. In this we are talking about CE marking equipments and if we use european approval of material you don't have further problem, AD Merk is only a Design Code and there is no necessity to use only German Materials. But, I have no doubt about Z factors, I...
  2. Calidad

    Bolts Values for ASTM A-193 B7 in AD MERK Code

    Dear Colleagues: I have 9 years of experience designing Pressure vessels but at this moment I have Mental Lakes about values that I need to take in consideration if I use this german Code. This code in its part B7 uses Z factors as Safety Factors , well, my ethernal doubt is : Must I use K(T)...
  3. Calidad

    Bolts Equivalences

    Dear Colleagues: I'm a Mech Eng. who has 10 years experience in pressure vessels design,using ASME , ADmerk , CODAP Code but my strong labour was in ASME. Now, when I design using ADM Code, I get some troubles with Bolt K values using to determine allowable stress. In this case, I've a ASTM...
  4. Calidad

    TIG+SMAW in INOX series 300

    Hello Coleagues: I'm looking for heat input values or ranges to apply in descripts procees when we weld inox series 300 as inox 304L. Could anybody inform me about it? Best regards Calidad calidad@integasa.com
  5. Calidad

    How to determine K of bolts (AD-MERK Code)

    Dears Colleagues: I have designed a flange in accordance with Admerkblatter Code (German Code) and I'm trying to use ASTM Bolts material (A-193 Gr B7) , Could any body explain me , which is the formula to determine K for Bolts in this Code. I'm using BJAC Software but the program don't...
  6. Calidad

    Corrosion Behavior between Titanium + CuNi materials

    Hello Collegues: Thanks for your promptly answer. To complete my search, aand pay special attention to comment from MetalGuy, the referred enviroment is a heat exchanger that works in shell side (ext. of tube) with seawater at 4 barg and T aprox. 24 C degree. Thanks in advanced José Luis Gómez R.
  7. Calidad

    Corrosion Behavior between Titanium + CuNi materials

    Dear Collegues: I'm working in a project to study which it would be the effects of use in a heat exchanger bundle, tubes in CuNi (90/10) and tube for tie rods (spacers ) in Titanium mat (Class I or II) taking in account that spacers are closer to tubes (distance aprox 1 pitch = 19 mm ). Could...
  8. Calidad

    Equivalence between TTSt35N Din 17173 and Asme Mat

    Dear Collegues: Due problems with my bibliography, it is impossible to me to find an equivalent material in ASME Code, Anybody Knows this material?. I've tried with Key of Steel and its equivalent reports "SA-333 Gr1", It is a C.S. pipe but no specifically a tube , I think that is...
  9. Calidad

    Use of Europeen Materials in Asme design.

    Dear Gert: Thank's for your promptly answer. Ped can authorize me to use this material using a particular appraisal of materials, that's correct. But I refer to use of Din Mats using American Code, it is only to design (other jobs than PED's ones), the problem exist when I try to use...
  10. Calidad

    Hubbed joints. use of them

    Dear friends: I'm a mech designer that have a problems to determine when the equipments must have a hubbed joint (BEM heat exchangers shell to tubesheet joint). If my client uses 100% radiograph , it is mandatory to use them? or additionally the fluid must be lethal. Now, I'm using corner...
  11. Calidad

    Use of Europeen Materials in Asme design.

    Due problems with our suppliers, I'm usign in a ASME Design Europeen (DIN Standards) and ASTM Materials. At this moment, I'm trying to use and analogue materials in ASTM for this Din Materials. (PED cathegory IV design) I've checked in ASME section IId and Appendix 1 looks so usefull to find a...
  12. Calidad

    Equivalent pressure for bolted joint

    Hi , edemarcos: I´m a spanish Mech. Eng. and I've been working during 10 years in design of heat exchangers and Pressure vessels. Your doubt is totally clearificated in a good book called Pressure Vessel Design Manual of Robert Moss , in the applicable design chapter about the flanges. You can...

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