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Recent content by qalab

  1. qalab

    Narrow Groove welding technical details.

    Thanks for the reply. I'm using Submerged arc wekding for the welding of shell. Plate matl.:- sa 516 Gr. 70 Thickness :- 100 mm As mentioned by Carburize i don't have the following book. "Developments in Pressure Vessel Technology-3" Edited by R W Nichols - Applied Science Publishers - London...
  2. qalab

    Narrow Groove welding technical details.

    thanks for the reply. Well the thickness of the vessel as mentioned above is 100mm and materail of const. SA 516 Gr. 70. I don't have the copy mentioned by Carburize' "Developments in Pressure Vessel Technology-3" Edited by R W Nichols - Applied Science Publishers - London I would be using...
  3. qalab

    Narrow Groove welding technical details.

    Hello, I'm working on Narrow Groove Welding of Carbon Steel for pressure Vessels (SA 516 Gr. 70) I donot want to go for Backing strip method. Hence prefer the Back gouging method. Wanted to know from where can i get the Groove design detail and the consumable detail along with the current and...
  4. qalab

    submerged arc wire comparisons

    Right now i am working on Narrow groove welding of Carbon Steel (SA 516 Gr. 70) for 100 mm and above. I donot want to go for Backing strip method. Hence prefer the Back gouging method. Wanted to know from where can i get the Groove design detail and the consumable detail along with the current...
  5. qalab

    projection welding of ss 409 to sa 213 t11

    please can anybody help me with the parameter setting for projection welding of SS409 to SA213 T11 fin thiclness - 2 mm tube thickness - 4 mm
  6. qalab

    welder performance qualification as per ASME SECTION IX

    As per earlier code, when welder was qualified on 3/4" and above,base metal thickness qualified was max. to be welded. Now as per latest code ,if welder welds 1/2" and above, qualification range is maximum to be welded. if we have qualified welder on 16 mm thick plate before the new code came...
  7. qalab

    What is a Fluidised Bed Boiler?

    hi, fbc boiler are the ones which use the property similiar to boiling water. when a jet of air is passed through a layer of sand, the sand starts bubbling like boiling water. this technic is used for the combustion of soild fuels like coal,wood, husk etc.

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