SPECIFICATION RW-3032 ISSUE 1 Page 3
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4.3.1 Dimensions and Longitudinal Change
Measure three 6-inch (150 mm) specimens of tubing, as supplied, for length ± 1/32 inch
(± 1 mm), and inside diameter in accordance with ASTM D 2671. Condition the specimens for 5 minutes in
a 150 ± 5°C (302 ± 9°F) oven, cool to 23 ± 3°C (73 ± 5°F) and then remeasure. Prior to and after
conditioning, the dimensions of the tubing shall be in accordance with Table 1 and the longitudinal change
shall be in accordance with Table 3. Dimensions of adhesive thickness shall be taken from specimens which
have been hung vertically in the oven during recovery. The adhesive thickness shall be the average
determined by measuring a cross section taken 1 inch from each end of the suspended specimen. Care should
be taken not to overheat the adhesive so that it drips or flows from the tubing.
Calculate the longitudinal change as follows:
C =
L
1
- L
0
L
0
x 100
Where: C = Longitudinal Change [Percent]
L
0
= Length Before Conditioning [Inches (mm)]
L
1
= Length After Conditioning [Inches (mm)]
4.3.2 Tensile Strength and Ultimate Elongation
Determine the tensile strength and ultimate elongation of the tubing in accordance with ASTM D 2671 using
1-inch (25-mm) bench marks, a 1-inch (25-mm) initial jaw separation, and jaw separation speed of 20 ± 2
inches (500 ± 50 mm) per minute.
4.4 REJECTION AND RETEST
Failure of any sample of tubing to conform to any one of the requirements of this specification shall be cause
for rejection of the lot represented. Tubing which has been rejected may be replaced or reworked to correct
the defects and resubmitted for acceptance. Before resubmitting, full particulars concerning previous
rejection and action taken to correct the defects shall be furnished to the inspector.
5. PREPARATION FOR DELIVERY
5.1 FORM
The tubing shall be supplied in lengths of 48 +1, -0 inches (1220 +25, -0 mm) unless otherwise specified.
5.2 PACKAGING
Packaging shall be in accordance with good commercial practice.
5.3 MARKING
Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer’s
identification, specification number, and lot number.
