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Celebrating 100 years! Marmon/Keystone - a century of service

4.250 x.381 x3.488 (4.250OD 3.488ID .381W (Drawn Over Mandrel Suitable To Hone))

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LB/FT: 15.7430
ASTM A-513:
This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing. It covers round, square,rectangular, and special shapes made from hot or cold rolled steel. It covers as welded, sink drawn, mandrel drawn, and special smooth inside diameter. Common grades in warehouse stocks are 1010, 1015, 1020, 1026, and ST52.3.

12. Condition


The types and conditions of tubing covered by this specification are:

Type #CodeDescription
5M.D.mandrel drawn
6S.S.I.D.special smooth inside diameter

Thermal conditions under which tubing may be furnished are: no final thermal treatment, stress relieved, and annealed or normalized.