Welding Symbols on Drawings

Introduction......Page 7
Scope......Page 9
Standards referred to in this book......Page 10
Terms and definitions......Page 11
1: The need to specify welds......Page 15
2: The advantages of symbols......Page 17
Butt/groove welds......Page 20
Fillet and edge welds, backing run or weld, flare groove and bevel welds, and plug or slot weld......Page 23
Spot and seam welds, surfacing, and steep flanked butt welds......Page 25
Butt/groove welds......Page 27
Fillet welds......Page 28
8: Supplementary symbols......Page 30
Contours of welds......Page 31
Convex contour......Page 32
Toes blended smoothly......Page 33
Back weld and backing weld......Page 34
Consumable insert......Page 35
Peripheral welds (weld all round)......Page 36
Backing strip or backing......Page 37
Butt/groove welds......Page 38
Groove dimensions......Page 39
Length of butt/groove welds......Page 41
Fillet welds – transverse......Page 42
Double fillet welds......Page 43
Unequal leg length fillet welds......Page 44
Fillet welds – longitudinal......Page 45
Resistance spot welds......Page 48
Projection welds......Page 49
Seam welds......Page 50
13: Stud welds......Page 51
Multiple layers......Page 53
15: Process identification......Page 54
16: Non-destructive testing symbols – AWS......Page 56
Exercise 1: Flange ended pipe......Page 58
Exercise 2: Vessel......Page 59
Exercise 3: Tank......Page 60
Exercise 4: Beam......Page 61
Exercise 1 solution......Page 62
Exercise 2 solution 1......Page 63
Exercise 2 solution 2......Page 65
Exercise 3 solution......Page 67
Exercise 4 solution......Page 69