How to Bend light wall high strength pipe |
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GALTUBE* ULTRA, EXTRA LIGHT
CHOOSE THE CORRECT PIPE
A simple guide to choosing the correct pipe.
Sheepyard Gates (under 900 wide)
20NB Galtube* Ultra frame
Sheepyard Gates (under 900 wide)
25NB Galtube* Ultra frame
Farm gates (all sizes)
25NB Galtube* Ultra frame
Cattle yard gates (all sizes)
32NB Galtube* Ultra frame
THE RIGHT FORMER
The choice of the right former is important. Light walled pipe needs support during bending. Special Galtube* Ultra and Extra light formers are available from your nearest Metaland outlet.
Galtube* Ultra formers have a larger radius than used on mild steel pipes (see diagrams)
The Galtube* Ultra formers also squeeze the pipe during bending to help support the wall.
PIPE BENDERS
You can use a hand operated bender or a power hydraulic bender. The important points to consider are;
1. You need a different former for each pipe size.
2. The stops have to be matched with the pipe size.
3. When the stops are too close you will jam the pipes.
4. When the stops are too wide you will lose support for bending the pipes.
NOTE: IF THE CORRECT FORMER IS NOT USED CRUSHING ON THE BENDS CAN OCCUR.
When the pipe is bent, the round corner plays games with simple calculations. For each bend there is a difference between outside measurements and total straight pipe length.
STEP 1
Take a 2 metre (2000mm) length of 25NB Galtube* Ultra pipe. Make a point from each end.
STEP 2
After choosing the correct former bend the pipe at each mark. To form a right angle you may need to try a few times. You will have to overbend Galtube* Ultra as it will spring back when the pressure is released.
You now have a gate frame but the dimentions are not the same as the marks you have made. (example only)
CALCULATIONS
You should now record these differences. The difference in leg length should be recorded as (X) and the total differences (both legs plus width) recorded as (Z).
In the example X=45mm Z=205mm (45+115). (These dimentions X and Z are used in later work sheets).
You need to make these calculations for each former size. They will remain unchanged for your pipe bender with the stops chosen to suit the pipe size.
These dimentions are used in later worksheets. You can now use them to design gates to suit your special needs. See worksheet No.3 for step instructions on building a 3 metre gate.
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