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Determining the Welding Profile specified on WPS for Pipeline

Determining the Welding Profile specified on WPS for Pipeline

Determining the Welding Profile specified on WPS for Pipeline

(OP)
Dear Welding and piping expert.

it is whom responsibility to determine the type of pipe/piping welding profile " Root depth, Spacing , Bevel angle and shape Single or double grooving , V or J type ?

On what basis these parameters " Type of profile , dimensions along with Welding electrode type [ root , hot , filling and cap ] " are selected ?

is there any engineering software to select or design the welding joint for pipe/piping ?

Regards,

Tarek

RE: Determining the Welding Profile specified on WPS for Pipeline

Under ASME Codes, the Manufacturer/Contractor makes those judgments. The Code does provide for maximum reinforcement

RE: Determining the Welding Profile specified on WPS for Pipeline

(OP)
Dear weldstan

is there any min. requirement ?
What is driving contractor selection to choice between J and V profile ?
the contractor might formulate a profile providing him less metal deposit rate , or cheaper welding electrode , so what would be controlling such action ?

RE: Determining the Welding Profile specified on WPS for Pipeline

Joint design is primarily driven by welding process (manual/machine), costs and the weldability of the alloy.

RE: Determining the Welding Profile specified on WPS for Pipeline

"the contractor might formulate a profile providing him less metal deposit rate , or cheaper welding electrode , so what would be controlling such action ? "

Provided the fabricator meets all of the design/Code requirements, optimizing these variables is what can make a fabricator profitable. If the Designer has specific concerns over weld joint selection, he can certainly impose such limitations in the design drawings/contract.

Just to add an additional variable, skill of the craft also plays an important role, both in the ability to make a sound weld deposit, as well as the ability of the pipefitters to satisfactorily fit up the joint.

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