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what is the procedure for welding permnant clamp or patch plate in maintinance piprline and what is the time i can replace part or spool of pipeline ?

can we weld pipes api 5l grade b to pipes api 5l x52 ?

I WANT ANYTHING ABOUT MAINTENANCE AND DESIGN OF GRE PIPES

THERE IS PIPELINE OF MATERIAL API 5L GR B AND WE WANT TO CHANGE SOME OF PIPES BUT WE HAVE PIPES API 5L X52 ONLY, CAN WE USE IT? WHAT ABOUT WELDING OF PIPES WITH DIFFERENT STRENGTH ?

Slip on flange

Can I do RT test after welding pipe to flange 30 inch diameter? If yes what is the procedure and method?

Pipes of 48m length and 30inch diameter is buried in sand how can I make cathodic protection on it and how many no of sacrificial anodes?

How can tow pipes of 30inch diameter with different wall thickness(9.5mm,13mm)be welded and what's the procedure for welding?

There is pipeline of 30inch diameter buried not ( not insulated and no cathodic protection on it) and there are electrical cables beside it Is there effect of electrical cables on corrosion rate of pipeline and how can this pipeline be repaired when leak happen what is the recommended practices ?

Thanks a lot terry can you explain by drawing ?

Thanks tbuelna what about different thickness ,second course is double thickness of first course and,procedure of company is 1_ we will weld with electrode 2.5mm 7018 2_cold weld by material like epoxy I don't understand this procedure ?

There are rivted tank first course is replaced and in the region of T weld will be welded by cold welding to different thickness between first course and the second?http://files.engineering.com/getfile.aspx?folder=296fb567-9e4b-4d62-afdf-85650fff317e&file=20131207_121259.jpg

I want any information about cold welding for steel and its types and procedure?

What happens if roof plates will be completely painted then welding?

Can I weld roof plates with truss and can paint roof before welding?

How can I choose filler metal for any dissimilar material welding?

How can I repair of shell pitting ?can I use welding and what's the procedure and what's the method of inspection and can rt used?

How I calculate no of sacrificial anodes and their position per any tank by equations?

What's the procedure of hydrotest on tank what's type of fluid?

What's the type of tank painting which used from inner and outer surfaces?