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  • Users: zebmahar
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  1. zebmahar

    Low temperature limits of ASTM A-106 Gr. B Pipes

    What is the minimum allowable temperature for use of ASTM A 106 Grade B. Can ASTM A 106 grad B material be used in -10 C Waiting for response Kind Regards Jahanzeb Mahar I have edited by post to make it correct "Maximum" was written by mistake. Basically i need help to know what is the...
  2. zebmahar

    Tolerance of Weld Repair of SAWH Pipes

    Hello, I have a questing regarding weld repair allowed by API 5L in Annex C, Clause C.4.3 C.4.3 The total length of repaired zone on each pipe weld shall be < 5% of total weld length for SAW and COW weld seams. Submerged Arc Welded Helical (SAWH) pipe have inside and outside welds and...
  3. zebmahar

    Change of repair welding electrode

    Hello Everyone, We are SAWH pipe manufacturer, we carryout repair welding of API 5L Gr. X-70 pipes with Electrode E-9018. Please let me know, can we use electrode E-8018 instead of E-9018 on API 5L Gr. X-70 pipes. if yes, is re-qualification required. Product standard is silent about it...
  4. zebmahar

    Management of Change procedure accroding to API Q1

    Hi everyone, I would really grateful if anyone can help me in writing the Management of Change procedure according to API Q1 or share with me the the same Basically i am writing this first time and don't any any idea about MOC. Best Regards Zebmahar
  5. zebmahar

    A question regarding tube bending

    Good day guys, Can anyone let me know, why the cold bending is preferred by the fabricators instead of hot bending? Even in the hot bending there is very little chance of cracking and tubes also get bend easily. Regards Zebmahar
  6. zebmahar

    Difference between boiler and super heater tubes

    Hello everyone I would like to know what is the difference between boiler tubes and super heater tubes, also let me know how much pressure and temperature these tubes can sustain. Kind Regards Zebmahar
  7. zebmahar

    Inspection activities for Seamless Pipe Manufacturing

    Kindly inform me that for Seamless pipe manufacturing according to API 5L, what inspection activities are compulsory from the list mentioned below:- Ultrasonic Testing (UT) Electro Magnetic Inspection (EMI) Flux Leakage Inspection Eddy Current Inspection Magnetic Particle Inspection Regards...
  8. zebmahar

    Residual Magnetism for seamless pipe

    Kindly tell me what is the requirement of residual magnetism for seamless pipe in API 5L 44th edition Regards Zebmahar
  9. zebmahar

    Yield to Tensile Ratio

    Hello Guys! We are producing 10" x 11.7 x DRL Seamless pipe in API 5L Gr. X 60, with material composition as follow:- C = 0.14 %, Si = 0.22 %, Mn = 1.33 %, P = 0.0012 %, S = 0.00062 %, Cr = 0.165 %, Ni = 0.143 %, Mo = 0.022 %, Al = 0.0241 %, Cu = 0.215 %, Co = 0.0107 %, Ti = 0.0016...
  10. zebmahar

    Yield to Tensile Ratio

    Hello Guys! We are producing 10” x 11.7 x DRL Seamless pipe in API 5L Gr. X 60, with material composition as follow:- C = 0.14 %, Si = 0.22 %, Mn = 1.33 %, P = 0.0012 %, S = 0.00062 %, Cr = 0.165 %, Ni = 0.143 %, Mo = 0.022 %, Al = 0.0241 %, Cu = 0.215 %, Co = 0.0107 %, Ti = 0.0016...
  11. zebmahar

    Calculation of Yield strength

    Hello guys I would like to ask that, what is the method of finding yield strength of the material tested on Universal Testing Machine (UTM). Due to some error our machine is not making the graph, so we have to do manual calculations for the yield strength. Someone has advised us to calculate...
  12. zebmahar

    API 5L expansion ratio

    It is written in API 5L, 44th edition Page No. 21 8.9 Cold Sizing and Cold Expansion 8.9.1 Except as allowed by 8.9.2, the sizing ratio for cold sized pipe shall not be more than 0,015, unless (a) the pipe is subsequently normalized or quenched and tempered, or (b) the entire part of the pipe...
  13. zebmahar

    API 5L expansion ratio

    It is written in API 5L, 44th edition Page No. 21 8.9 Cold Sizing and Cold Expansion 8.9.1 Except as allowed by 8.9.2, the sizing ratio for cold sized pipe shall not be more than 0,015, unless (a) the pipe is subsequently normalized or quenched and tempered, or (b) the entire part of the pipe...
  14. zebmahar

    ASME / ASTM SA/A 333 Gr. 6 Heat treatment

    Hello Guys According to ASME SA 333, Gr. 6 Product should be Quench and Tempered but we don't have the facility. Any how we do achieve the properties required by the said standard through simple heat treatment furnace. In your opinion, does our product qualify according to the standard? Regards
  15. zebmahar

    ASME SA 333 Gr. 6 Heat treatment

    Hello Guys According to ASME SA 333, Gr. 6 Product should be Quench and Tempered but we don’t have the facility. Any how we do achieve the properties required by the said standard through simple heat treatment furnace. In your opinion, does our product qualify according to the standard? Regards
  16. zebmahar

    Pipe manufacturing according to ASME codes

    Hello every one Seamless steel pipes are manufactured according to ASME section II Part A. is there any special requirement given in ASMA section I or any other section of ASME code for pipe manufacturing. as far as I know steel pipes are manufactured according to section II Part A and ASME...
  17. zebmahar

    ASME section 1 requirements for seamless pipe manufacturer

    Hello guys A customer wants to visit and check our seamless pipe manufacturing facility as per ASME section 1. According to my knowledge ASME section is the code for construction of boiler and I think it is not applicable to seamless pipe manufacturers, being a manufacturer we only manufacture...
  18. zebmahar

    which is the most frequently used test method for conducting SSC Test?

    Hello everyone NACE MR 0175 is the standard for the materials resistive to Sulfide Stress Cracking in H2S environment and for conducting SSC test there are many methods like proof ring type, four point bend type and four point deflection type methods. I would be really glade if some tell me...
  19. zebmahar

    Want to know the names of HIC &amp; SSC tests laboratories

    It would be very appreciated if some one tells me the name and web address of well known laboratory having a capability to perform Hydrogen Induced Cracking (HIC) & Sulfide Stress Cracking (SSC) Tests. Thanks Zebmahar
  20. zebmahar

    How to bring the temperature down for charpy impect test sample

    Hello every one, Please let me know is there any quick method for brining the temperature down below 0 C of carbon steel pipe specimen for Charpy Impact Test. Hoping for the quick response Kind Regards

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