Welding Drawing Notation

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Welding Drawing Notation. Relevant weld process code is listed in BS EN ISO 4063. Compare these two symbols.

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A perfect example would be E70. The weld symbol is the little icon that is drawn on the reference line of the welding symbol. Compare these two symbols.

Relevant weld process code is listed in BS EN ISO 4063.

The arrows of the symbol between the two letters indicate that a weld needs to run the full length between the two marks. Welding is a fabrication or sculptural process that joins materials usually metals or thermoplastics by causing coalescence. When fillet welds are indicated on both sides of a joint and a general note governing the dimensions of the welds appears on the drawing neither weld need be dimensioned. BS 499 and AWS require symbols to be placed above the reference line which indicate the other side or below the reference line indicating the arrow side of the joint.