Welding symbols

This engineering drawing present weld type symbols and fillet weld symbols.
The weld type symbol is typically placed above or below the center of the reference line, depending on which side of the joint it's on. The symbol is interpreted as a simplified cross-section of the weld.
"Fillet welding refers to the process of joining two pieces of metal together whether they be perpendicular or at an angle. These welds are commonly referred to as Tee joints which are two pieces of metal perpendicular to each other or Lap joints which are two pieces of metal that overlap and are welded at the edges. The weld is aesthetically triangular in shape and may have a concave, flat or convex surface depending on the welder’s technique. Welders use fillet welds when connecting flanges to pipes, welding cross sections of infrastructure, and when fastening metal by bolts isn't strong enough." [Fillet weld. Wikipedia]
The engineering drawing example Welding symbols is included in the Mechanical Engineering solution from Engineering area of ConceptDraw Solution Park.

Welding joint symbols

Used Solutions

Engineering >

Mechanical Engineering

Elements location of a welding symbol

"The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers. The US standard symbols are outlined by the American National Standards Institute and the American Welding Society and are noted as "ANSI/ AWS".
In engineering drawings, each weld is conventionally identified by an arrow which points to the joint to be welded. The arrow is annotated with letters, numbers and symbols which indicate the exact specification of the weld. In complex applications, such as those involving alloys other than mild steel, more information may be called for than can comfortably be indicated using the symbols alone. Annotations are used in these cases." [Symbols and conventions used in welding documentation. Wikipedia]
The example chart "Elements of welding symbol" is redesigned using the ConceptDraw PRO diagramming and vector drawing software from the Wikipedia file: Elements of a welding symbol.PNG.
[en.wikipedia.org/ wiki/ File:Elements_ of_ a_ welding_ symbol.PNG]
The diagram example "Elements location of a welding symbol" is contained in the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.

Welding joint symbol chart

Used Solutions

Engineering >

Mechanical Engineering

Design elements - Welding

The vector stencils library "Welding" contains 38 welding joint symbols to identify fillets, contours, resistance seams, grooves, surfacing, and backing.
Use it to indicate welding operations on working drawings.
"Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. This is in contrast with soldering and brazing, which involve melting a lower-melting-point material between the workpieces to form a bond between them, without melting the workpieces.
Many different energy sources can be used for welding, including a gas flame, an electric arc, a laser, an electron beam, friction, and ultrasound.
Welds can be geometrically prepared in many different ways. The five basic types of weld joints are the butt joint, lap joint, corner joint, edge joint, and T-joint (a variant of this last is the cruciform joint). Other variations exist as well - for example, double-V preparation joints are characterized by the two pieces of material each tapering to a single center point at one-half their height. Single-U and double-U preparation joints are also fairly common - instead of having straight edges like the single-V and double-V preparation joints, they are curved, forming the shape of a U. Lap joints are also commonly more than two pieces thick - depending on the process used and the thickness of the material, many pieces can be welded together in a lap joint geometry." [Welding. Wikipedia]
The shapes example "Design elements - Welding" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.

Welding joint symbols

Used Solutions

Engineering >

Mechanical Engineering

This solution extends ConceptDraw PRO v.9 mechanical drawing software (or later) with samples of mechanical drawing symbols, templates and libraries of design elements, for help when drafting mechanical engineering drawings, or parts, assembly, pneumatic,

Welding - Vector stencils library

The vector stencils library "Welding" contains 38 welding joint symbols to identify fillets, contours, resistance seams, grooves, surfacing, and backing.
Use it to indicate welding operations on working drawings in the ConceptDraw PRO diagramming and vector drawing software extended with the Mechanical Engineering solution from the Engineering area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ engineering-mechanical

Additional arrow

Text block

Fillet

Slot / plug

Stud

Resistance seam

Backing

Surfacing

Flange corner

Flange edge

Square groove

V-groove

Bevel groove

U-groove

J-groove

Flare V groove

Flare bevel groove

Scarf

Melt through weld

Field weld

Backing / spacer

Insert

Arrow with bend

Arrow with bend, tail

Arrow with bend, circle

Arrow with bend, circle, tail

Arrow

Arrow, tail

Arrow, circle

Arrow, circle, tail

Spot

Projection weld

Contour, concave

Contour, convex

Contour, flush

Contour angled, concave

Contour angled, convex

Contour angled, flush

Square butt weld

Closed square butt weld

Single-bevel butt weld

Double-bevel butt weld

Single-V butt weld

Double-V butt weld

Single-J butt weld

Double-J butt weld

Single-U butt weld

Double-U butt weld

Flange butt weld

Tee butt weld

Flare butt weld

Square butt joint

Single V preparation joint

Lap joint

T-joint

Butt weld

Butt weld, single-V

Bilateral lap weld

Tee weld

Angular weld

Mechanical weld

Used Solutions

Engineering >

Mechanical Engineering

Valves and fittings - Vector stencils library

Electrically bonded

Bursting disc

Flame arrester

Strainer

Separator

Exhaust silencer

Bell mouth

Exhaust head

Hydrant

Drain silencer

Liquid seal open/closed

Y strainer

Gate valve

Globe valve

Globe valve 2

Globe valve 3

Screw-down valve

Lock-shield valve

Reel valve

Check valve

Check valve 2

Check valve 3

Screw-down check valve

Stop check valve

Diaphragm valve

Diaphragm valve 2

Diaphragm valve 3

Powered valve

Powered valve 2

Powered valve 3

Needle valve

Needle valve 2

Needle valve 3

Relief valve

Relief valve 2

Relief valve 3

Angle valve

Angle valve 2

Angle valve 3

Angle valve 4

Float operated valve

Float operated valve 2

Flanged valve

Butterfly valve

Butterfly valve 2

Wedge gate valve

Parallel slide valve

Ball valve

Ball valve 2

Ball valve 3

Relief angle valve vacuum

Relief angle valve pressure

Reducing valve

Reducing valve 2

Plug valve 3 way

Plug valve L point

Plug valve 2

Plug valve

Plug valve straight through

Plug valve T point

3-way plug valve

3-way plug valve 2

3-way plug valve 3

Mixing valve

Valve Manifold

Characterized port valve

Reducer

Reducer 2

General joint

Butt weld

Butt weld 2

Butt weld 3

Butt weld 4

Flanged/ bolted

Soldered / solvent

Soldered / solvent 2

Screwed joint

Screwed joint 2

Screwed joint 3

Socket and spigot

Socket and spigot 2

Socket and spigot 3

Sleeve

Sleeve 2

Screwed sleeve

Screwed sleeve 2

Socket weld

Socket weld 2

Swivel joint

Swivel joint 2

Swivel joint 3

End cap

End cap butt welded

End cap screwed

End cap socket and spigot

End cap fillet welded

End cap screwed and plugged

End cap quick release

End cap flanged and bolted

End cap flanged and bolted 2

Electrically insulated

Tundish

Syphon drain

Open vent

Used Solutions

Engineering >

Chemical and Process Engineering

Design elements - Valves and fittings

The vector stencils library "Valves and fittings" contains 104 symbols of valve components.
Use these icons for drawing industrial piping systems; process, vacuum, and fluids piping; hydraulics piping; air and gas piping; materials distribution; and liquid transfer systems.
"A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically valves fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure.
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. ...
Valves are found in virtually every industrial process, including water & sewage processing, mining, power generation, processing of oil, gas & petroleum, food manufacturing, chemical & plastic manufacturing and many other fields. ...
Valves may be operated manually, either by a handle, lever, pedal or wheel. Valves may also be automatic, driven by changes in pressure, temperature, or flow. These changes may act upon a diaphragm or a piston which in turn activates the valve, examples of this type of valve found commonly are safety valves fitted to hot water systems or boilers.
More complex control systems using valves requiring automatic control based on an external input (i.e., regulating flow through a pipe to a changing set point) require an actuator. An actuator will stroke the valve depending on its input and set-up, allowing the valve to be positioned accurately, and allowing control over a variety of requirements." [Valve. Wikipedia]
The example "Design elements - Valves and fittings" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Engineering area of ConceptDraw Solution Park.

Valves and fittings symbols