Model Number: ASTM A513 MTX1015 Key Specifications/Special Features: Product name: ASTM A513 MTX1015Size: outsidediameterform3/8to8inches (9.52to203.2mm)Wallfrom0.028to0.134inches (0.71to3.40mm)Technique:Electric-resistance-weldedtubingfromcold-rolledsteelElectric-resistance-weldedtubingfromhot-rolledsteelScope 1. This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing.2. This specification covers mechanical tubing made from hot- or cold-rolled steel.3.This specification covers round, square, rectangular, and special shape tubing.