MIL-DTL-3701F
3.6 Test date. The cylinders shall be delivered within one year of the test date stamped
on the cylinder.
3.7 Cylinder identification. Unless otherwise specified herein, markings shall be in
characters not less than 0.188 inches high for 10 cubic foot cylinders. On larger cylinders,
markings shall be in characters not less than 0.375 inches high.
3.7.1 Standard markings. Standard markings shall be plainly and permanently marked
by stamping on the shoulder of each cylinder, starting near the neck as follows:
a. "DOT-8" or "DOT-8AL" as applicable.
b. Serial number (see 6.3).
c. "US GOVT", government symbol as registered with the Department of Transportation.
d. Date of test, stamped diametrically opposite the above marking.
e. The inspector's official mark, if inspected by an organization other than the
manufacturer.
f. Manufacturer's mark, stamped near the date of test (preferably right above it).
g. The tare weight (see 3.5), stamped in a position other than in sequence with the serial
number or test date, and preceded by the letters "TW".
h. Capacity of acetylene gas in cubic feet (see 1.2), preceded by the letters "CAP".
3.7.2 Additional markings. In addition to the above markings, the cylinders shall bear
the following markings:
a. The name of the gas, stenciled on the cylinder in accordance with MIL-STD-101.
b. Decals when specified (see 6.2), affixed diametrically opposite to one another on the
sides of the cylinder, 90 degrees from the stenciled name of the gas.
3.8 Treatment and painting. The treatment and painting of cylinders shall be by any method
or system that will provide a finish that will meet the requirements of the CGA TB-17. The cylinders
shall be color coded and stenciled in accordance with the requirements of MIL-STD-101.
3.8.1 Bottom coating. Calcium sulfonate coating, such as Watson Armor Shield or an
equivalent, shall be applied to each dry, clean steel cylinder bottom and footring, when applicable, as
soon as practicable after cleaning processes are completed. Dry film thickness of the bottom coating
shall be 3.0 to 7.0 one-thousandth of an inch (mil).
3.9 Workmanship. Cylinders, valves, plugs, flanges, and caps shall be clean and free
from grit and loose scale. Edges shall be rounded or chamfered. Cylinders shall be cleaned and
free of other surface defects detrimental to the intended use.
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