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right but in the case of elecrode E7018 or E9015B9 ,asme sec ii,pat c has define minimum required ys and uts for weld produce by this electrode. why not define for minimum required y.s. for weld deposite by e308-15/16 .

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.

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

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.

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.

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

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...

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...

thanks to all to give your presious openian.. we are using double side welding by tandam arc saw , woldwide used for manufacturing of line pipes as per api 5l LSAW PIPE. before cut bend sample rt was clear, pipe size: 18"X17.50mm grade: api 5l x52mo hardness come in haz area was max 200hv10

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..

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.

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..

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

I have perform all action which was root cause for porosity but still I got two to three pts of poro in pipe.. I realy need more guidance...

Dear all thanks to reply... we are using saw three tandam arc automatic welding and following steps I have all ready taken... 1. baking of flux as permanufacture recommendation( same flux batch for both size) 2. I throuly clean the pipe from internal side and external side by grinding and...

Dear all, we are using saw three tandam arc automatic welding and following steps I have all ready taken... 1. baking of flux as permanufacture recommendation( same flux batch for both size) 2. I throuly clean the pipe from internal side and external side by grinding and buffing. 3. machin...

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...

Dear all, thanks for ur guidances.

we can do preheat at 125 deg c but interpass I can not achieve 200c. Because we prepare double v bevel groov so first we done inside saw three wir tandam welding and then we do outside of pipe. distance between inside and outside welding machine is 36meter. so max I can achieve is 130c.

preheat 100c and interpass 130c. we are getting depth to width ratio less than 1.