How to Read Welding Blueprint - Read Plans Like A Pro

Blueprint in Welding: Welding For Dummies

"A technical drawing of an architectural or commerce design. In welding, it includes standard welding symbols that indicate the required design, size, location, and the number of welds and other joining and inspection information". Do you are one of them who have interest to know about how to read welding blueprint.

To read the welding blueprint, you must know about the welding symbol, types and other important details.

Welding symbol:

Weld symbol differentiates between two edges of a combined using the arrow and the rooms above and underneath the allusion line. The advantage of the link to which the indicator ends is well-known as the projectile side, and that one joint completed corresponding to the orders given under the position line.

For Instance, Suppose that one fillet weld is choosing on the arrow side, and the next weld can see the actual weld and if appear on the top of the reference line so weld should be on its opposite side of the position arrow points.

How to Read Welding Blueprint

"Welding blueprint symbols are a means of communication among an upmarket, like a workshop foreman, supervisor or maybe engineer, and working welder. The type of weldings is describing as shorthand code also, its size, and other handling and concluding material. These symbols recognized by professional engineers and fabrication drawings, by which the welder refers to creating their weld".

Supplementary symbols also are given below.

How to Read Welding Blueprint

Types of Welding Symbols:

There are various types of welding symbols.

  • Fillet: The fillet weld symbol is prevalent. The corner joints, lap joints, and T-joints make by the fillet welding. It seems as a triangular shape; nevertheless, its form is not always an isosceles or right triangle".
  • Groove: The edge-to-edge joints are getting by groove welding symbol. Still, T joints, corner joints, and joints between flat and curved pieces often used.
  • Plug or Slot: Plug and slot welds used to meet the overlying portions by making holes through the drill in one of the parts. For the formation of joints, the weld metal just put down in the gaps and wraths with the base metal. 
  • Spot: Spot welding joins overlapping pieces of metal at small points by applying pressure and using electric current."
  • Seam: A seam weld is related to a spot weld. In effect, the weld projects through the top surface and melts into the other part using heat input.
  • Stud: Stud welds commonly practiced in many shops. In this process, a metal stud joined a metal workpiece by heating both parts with an arc.

Reading the blueprint for welding:

Reading the blueprints for welding is such a tricky and complicated task, but if you have a good experience understanding the blueprint of welding, it's not a big task. And in this article, we ultimately give adequate knowledge about; how to read welding blueprints?

It is significant for welders to remain talented at understanding welding symbols precisely. It permits them to create improved excellence effort in quicker time. Understanding, blueprints properly saves costs by getting projects done the right way in the first attempt."


Inappropriately, numerous welders consume a firm time interpretation plans properly. Various welders accessible in the market don't income occupational preparation. If a student that do take classes but doesn't get trained in blueprints or him committed not to pay attention to the written material. The consequence is that only a few welder students know how to read welding blueprints accurately or use them in their work".

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