How far apart should welds be?

It is recommended that distance between two spot welds should be a minimum of 10 times the material thickness. Sufficient overlap of individual sheets being spot welded is necessary to obtain adequate joint strength and for use of standard electrodes.

What is pup in piping?

Pup joints are non-standard lengths of piping used to adjust the height of full length tubing, drill pipe, line pipe, or casing strings. They are also distinguished by the nominal outside diameter of the pipe itself ranging from ¾” to 20″ or more dependent on the type of tubular goods they mate with.

What is a pressure retaining weld?

This procedure is to ensure the material joining process proposed for construction is capable of producing joints having the required mechanical properties for the intended application and produce a sound weld. …

What should be the minimum distance between welds?

Normally the minimum distance between welds shall be 1x diameter of the pipe. If this for. practical reasons is not possible the minimum distance between the welds may be reduced to. 2xWT or 50mm (between the weld caps) whichever is greatest.

What should be the spacing between butt welds?

Para 11.2 The toes of adjacent butt welds shall, whenever possible, be no closer than four times the nominal thickness of the pipe. And for attachment welds it states minimum distance between toes of welds S to be the smaller of 2 times the pipe thickness or 40mm.

What is the spacing between two welds in ug-36 ( C )?

There is no mention of distance between welds in UG-36 (c) (3). The only mention is in UW-14 (d), which says any small openings that haven’t had a reinforcing calculation must be atleast 13mm from from Catergory A, B or C welds in a shell thickness less then 38mm.

Is there Min spacing between 2 welds in ASME VIII?

ASME VIII Div 1 doesn’t address distance between welds at all. And the answer is different for every material. For instance Aluminium 5083 is not affected by welds being close together or on top of each other. Carbon steel is a different story. And then PWHT can be taken into account. Distance between welds can be a very complex topic.