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  • Users: vks1986
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  1. vks1986

    stress strain behavior of stainless steel weld

    why ASME Sec II, Part C, Sfa 5.4 not define the minimum required yield strength for stainless steel weld but minimum required y.s. for base metal is define in Asme sec II,part A.
  2. vks1986

    Classification of ss saw flux wire combination

    Hi... Why stainless steel saw flux and wire not classifed such as f7p2/a2 in aws 5.9. What is reason behind this.
  3. vks1986

    Back purging criteria in gtaw welding

    Hello, For Gtaw of cr-mo steel, is there back purging required for p11(1% Cr) and P22(2.25%Cr) cr-mo steel because customer spec. say above 4% Cr required back purging. At which minimum % of Cr it is required.
  4. vks1986

    pwht required for min. thickness

    Dear All, Base on which criteria to decide unasigne material required pwht equal or above minimum thickness. i.e. cs required pwht equal or above 19mm thick and below not required as per asme 31.3 i have wp36 hsla steel which is unasigne in asme. plz guide.
  5. vks1986

    PWHT TEMPERATURE DETERMINE

    Hi, How determine pwht temperature and soaking time of unasign p number material.
  6. vks1986

    welding pass is essential variable

    Hello, i have qualified wps of thickness range 16-50mm with multipule pass. actual pqr on thickness 25mm with impact test , single v groove, i have required 9 pass to fill 25mm thickness, so according to wps thickness range i have to weld 40mm thick but it may required 15 passes . so increase...
  7. vks1986

    BEAD HEIGHT PROBLEM

    Dear All, we manufacturing double side(internal and external) saw tandam arc(three) of pipe as per api 5l. pipe length is 12.300meter automatic saw welding.. external and internal saw start from f-end and stop at t-end in pipe. problem is starting of welding up to 1meter bead height coming...
  8. vks1986

    root cause for failure of bend test

    Hello, what is possible root cause for failure of bend test from haz(crack parallel to weld seam). bend sample taken from tranverse to weld seam in api 5l x52 material..
  9. vks1986

    differance between gmaw stt and pulse mode of transfer

    hello, any material available on difference between gmaw stt and pusle mode of metal transfer and also how select or decide mode of metal transfer in gmaw.
  10. vks1986

    straight HAZ

    Dear all, how can get straight haz in smaw and gmaw weldability test of api 5l X70M pipe in 5G position (circumference joint) we have prepare half "K" joint geometry with root gap 14mm with baking. so what is secrets behind to get straight haz. if any material to study..
  11. vks1986

    SMAW ELECTRODE FOR HIGH STRENTH LOW ALLOY STEEL

    Any suggested smaw electrode instead of E8018G,E9018G and E7018G for high strenth low alloy steel such as Api 5l X52 to X70. considering low hydrogen,good strength and toughness of weld metal
  12. vks1986

    Weld porosity problem

    Dear welding experts, we are manufacturing longitudinal saw weld pipes of api 5l weld groove: double v(internal saw and external saw) recently we have weld 50 nos(12.2Meter length)of pipe of size dia.32"Xthi.39mm we have done 100% Rt of each pipe & results no any porosity found. but after few...
  13. vks1986

    solidifiction crack and lower impct value

    Hello all, now i have facing problem of solidiction crack and lower impact value. we have pipe order of 36inch dia and 44mm thickness . our process of sawpipe welding is first doing gmaw on od longitudinaly then three wire tandam saw welding in inside and then outside of pipe longitudinally...

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