L-SEAM WELD JOINT DISTANCE

[krishna magdum]

Dear team,

pls suggest how much distance required for two L seam joint in pipe, some of people suggest for 4T 

pls suggest for ASME Standard or code

Regards 

Krishna

[SENTHILKUMAR SWAMINATHAN]

As per ASME Sec. VIII D1, UW8 - (d)

Except when the longitudinal joints are radiographed 4 in. (100 mm) each side of each circumferential welded intersection, vessels made up of two or more courses shall have the centers of the welded longitudinal joints of adjacent courses staggered or separated by a distance of at least five times the thickness of the thicker plate.

Thank you, 

Regards, 

S.SENTHILKUMAR

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