INSTRUCTIONS FOR STEER CRP PIPE BENDER
Select correct size former for pipe to be bent
Fit to jack.
Place Pipe rollers and pins into correct hole position on frame. Ie 2" pipe use 2" holes (outermost) Use support brackets over 32NB pipe.
Using list below for pipe gain. When bending calculate length of pipe required then subtract this amount off for each bend. Example: To make a gate 3600 x 1000 high from 25nb pipe, the frame would be 5600 less twice 180mm, Cut size would be 5240mm. This applies to each size pipe.
Set your stop to the finished height less half the bend allowance eg 1000 less 90mm = 910mm
When making the second bend be sure to see that the first bend is parallel to the bend being made. This can be done with a spirit level or simple jig, otherwise the frame will need to be checked on a bench prior to welding to see that it lays flat.
BENDING ALLOWANCE CHART FOR PIPE SIZES
- 15NB ---------------------- 90mm
- 20NB ---------------------115mm
- 25NB ---------------------180mm
- 32NB ---------------------190mm
- 40NB ---------------------200mm
- 50NB ---------------------250mm
CARE AND MAINTENANCE OF BENDING MACHINE
Store upright when not in use.
Do not overtighten release valve.
Use hydraulic oil SAE 22
Do not use brake fluid.
Do not hammer formers off pipe, Bump them off.
Use rollers in correct hole positions for each pipe size.
Support brackets must be used over 32NB pipe.
Tighten top nut if oil shows around the base.
Do not use smaller former on larger pipe.
Pipe quality varies greatly test a sample piece before purchasing stock to avoid disappointment.
Turn release valve four turns anti clockwise to return ram to start position.
Maximum pipe thickness is 2.9mm above 32NB pipe.
CHOOSING THE CORRECT PIPE
- Pipe is available in many sizes and varying wall thicknesses, in either black painted or galvanised finish.
- Pipe is ordered by using the NOMINAL BORE dimension. This is not an exact size but a neat round figure.
NOMINAL BORE (N.B.)
All the pipe has the same outside diameter (OD). Because of varying wall thickness the inside diameter is different. We can save confusion by describing the pipe using NOMINAL BORE and WALL THICKNESS.
PIPE STRENGTHS
The most common type of pipe you will use will be either mild steel or high strength steel. Modern steel mill processes allow high strength pipe with a lighter wall to be made thus enabling savings to be made. All tubeline pipe is manufactured by the ERW process providing a good clean surface finish with close tolerances on dimensions plus a high tensile strength of up to 350 mpa
When choosing pipe for a particular application it is not always best to have a heavy walled pipe. In many instances lighter wall with a higher strength will suffice thus saving money.
STANDARD PIPE SIZES
|
NOMINAL BORE |
OUTSIDE DIAMETER |
WALL THICKNESSES
XL LIGHT-LIGHT-MEDIUM- HEAVY |
NOMINAL BORE IMPERIAL |
|
20 |
26.9 |
2.0* |
2.3* |
2.6* |
3.2* |
3/4" |
|
25 |
33.7 |
2.0* |
2.6* |
3.2* |
4.0 |
1" |
|
32 |
42.4 |
2.0* |
2.6* |
3.2 |
4.0 |
1 1/4" |
|
40 |
48.3 |
2.3* |
2.9* |
3.2 |
4.0 |
1 1/2" |
|
50 |
60.3 |
2.3* |
2.9* |
3.6 |
4.5 |
2" |
Sizes marked * above are suitable for use with STEER pipe benders.
Other sizes will void warranty.