Welding Symbol

Build or read a BS EN ISO 2553 weld symbol in plain English

Symbol as drawn (ISO 2553, system A)

Weld type

Which side of the joint

Size given as

Size

Reading 6 mm

Weld length (0 = full length)

Reading 0 mm

Pitch between welds (0 = continuous)

Intermittent welds are written n × l (e): number, length, gap.

Number of welds (intermittent)

Reading 1

Surface contour

Weld all round

Site weld

Process in the tail

Results

Reads as

z6 fillet

In plain EnglishFillet weld on the arrow side, leg length 6mm (throat ≈ 4.2mm), full length of the joint.

Side rule (ISO 2553 system A)Symbol on the continuous reference line = arrow side; on the dashed identification line = other side.

Dimension lettersz leg · a throat · s penetration · n × l (e) intermittent

Contouras welded

Estimates use standard UK trade rules of thumb. Always check the bag/spec on the day.