Personnel
Foreword
1 History of aluminum pipe welding
2 Aluminum pipe alloys and their characteristics
3 Welding characteristics of aluminum
3.1 Aluminum oxide
3.2 No color change
3.3 High heat conductivity
3.4 High coefficient of expansion
3.5 Weldability of aluminum alloys
4 Welding processes and equipment
4.1 Alternative current gas tungsten arc welding
      (GTAW)
4.2 Direct current electrode negative (DCEN)
4.3 Gas metal arc welding (GMAW)
4.4 Automatic welding
5 Welding materials
5.1 Gas nozzles - GTAW
5.2 Tungsten electrodes
5.3 Filler metals
5.4 Inert gas
6 Welding preparation
7 Welding conditions
7.1 Machine settings and other variables
7.2 Edge preparation
8 Weld backing
8.1 Permanent backings
8.2 Removable backings
9 Welding technique
9.1 Gas tungsten arc welding (manual welding)
9.2 Gas metal arc welding
10 Heat treatment
10.1 Preheating
10.2 Postweld heat treatment
11 Code requirements - welding qualifications and
      design
12 Safe practices
Appendices
A Nominal composition of wrought alloys
B Pipe diameters, wall thickness and weights
C Safety and health
D Document list
Tables
1 Guide to choice of filler metal for welding
      aluminum pipe
2 Gas tungsten arc welding - alternating current in
      the horizontal rolled position (with backing)
3 Gas tungsten arc welding - alternating current in
      the horizontal fixed position (with backing)
4 Gas tungsten arc welding - alternating current in
      the vertical position (with backing)
5 Gas tungsten arc welding - alternating current in
      the horizontal rolled position (without backing)
6 Gas tungsten arc welding - alternating current in
      the horizontal fixed position (without backing)
7 Gas tungsten arc welding - alternating current in
      the vertical position (without backing)
8 Gas tungsten arc welding - direct current, DCEN,
      horizontal roller position
9 Gas tungsten arc welding - direct current, DCEN,
      horizontal fixed position
10 Gas tungsten arc welding - direct current, DCEN,
      vertical position
11 Gas metal arc welding - in the horizontal rolled
      position
Figures
1 Standard V-groove bevels
2 Pipe end preparation for U-groove
3 Finished weld in U-groove
4 Possible backing arrangement for use with V-groove
      welds
5 Gas tungsten arc welding torch directions,
      horizontal fixed position