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MANUFACTURING TOLERANCE
STEELPIPE Australia will manufacture pipe to the following dimensional tolerances which meets and exceeds
the requirements of all the pipe specifications. In general the dimensional tolerance of pipe manufactured is as
follows: |
| DIMENSION |
MANUFACTURING TOLERANCE |
| Diameter |
+_
2mm on diameter (equates to+6 mm on
circumference) |
| Ovality |
+_ 1% difference between the major and minor axis |
| Length |
+_ 1 mm per 1.0 metre of pipe |
| Straightness |
+_ 1 mm per 1.0 metre of pipe up to a maximum
of 10 mm |
|
WELDING SPECIFICATIONS
All welding will be fully compliant with the following standard: |
| SPECIFICATION |
CODE |
CATEGORY |
| Australian Standard |
AS 1554.1 |
General Purpose (GP) |
| |
|
Structural Purpose (SP) |
|
| All welds are tested to ensure a continual high standard as follows: |
| INSPECTION |
CRITERIA |
| Visual |
100% of all welds |
| Weld Profile |
Finished weld must be < 3 mmabove pipe surface |
| Etch Test |
In general 1 every 3 pipes to confirm proper fusion and internal/external
weld alignment |
| Ultrasonic/X-Ray |
Requirement and interpretation of ultrasonic or x-ray NDT is dependent on
pipe specification |
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