How To Fit Up Pipe To Pipe

HOW TO FIT UP A FLANGE HORIZONTALLY ON AN EXISTING SPOOL
ALIGNMENT OF PIPE
Proper alignment is important if a piping system is to be correctly fabricated.
Poor alignment may result in welding difficulties and a system that does not function properly.
Welding rings may be employed to assure proper alignment as well as the correct welding gap. In addition to using welding rings, some simple procedures can be followed to assist the pipe fitter. Below and on the following page are alignment procedures commonly used by today’s craftsmen.
FLANGE-TO-PIPE
1. Bring flange to pipe end leaving small welding gap
2. Align top two holes of flange with spirit level
3. Tack weld in place
4. Center square on face of flange as shown
5. Tack weld in place
6. Check sides in same way
PIPE-TO-PIPE
1. Level one length of pipe using spirit level
2. Bring lengths together leaving only small welding gap
3. Place spirit level over both pipes as shown and maneuver un positioned length until both are level
4. Tack weld top and bottom 5. Rotate pipe 90°
6. Repeat procedure
45° ELBOW-TO-PIPE
1. Level pipe using spirit level
2. Place fitting to pipe leaving small welding gap
3. Place 45" spirit level on face of elbow
and maneuver elbow until bubble is centered
4. Tack weld in place
90° ELBOW.TO-PIPE
1. Level pipe using spirit level
2. Place fitting to pipe leaving small welding gap
3. Place spirit level on face of elbow and maneuver elbow until level 4.
TEE-TO-PIPE
1. Level pipe using spirit level
2. Place tee to pipe leaving small welding gap
3. Place spirit level on face of tee and maneuver tee until level
4. Tack weld in place
FLANGE-TO-PIPE
1. Bring flange to pipe end leaving small welding gap
2. Align top two holes of flange with spirit level
3. Tack weld in place
4. Center square on face of flange as shown
5. Tack weld in place
6. Check sides in same way
JIG FOR SMALL DIAMETER PIPING
The jig is made from channel iron 3' 9" long. Use 1⁄8" x 11⁄2" for pipe sizes 11⁄4" thru 3"; 1⁄8" x 3⁄4" for Sizes 1" or smaller.
1. Cut out 90° notches about 9" from end.
2. Heat bottom of notch with torch.
3. Bend channel iron to 90° angle and weld sides.
4. Place elbow in jig and saw half thru sides
of channel iron as shown. Repeat this
step with several elbows so jig may be used for different operations.
Cut Notch, Heat & Bend
Weld Sides
5. A used hack saw blade placed in notch as shown will provide proper welding gap.
Cut Slots Using Fitting as Guide
Cut Slots Using Fitting as Guide
Weld Sides
Weld Sides
Please share the videos with your friends. Piping, Pressure Vessels, Storage Tanks, Structural Fabrication and Erection Tutorials
HOW TO FIT UP A LARGE FLANGE ON AN EXISTING PIPE SPOOL. TUTORIAL FOR BEGINNERS.

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