Execution standard: ASTM A519;
Material: carbon or alloy;
Manufacturing processes: Hot-finished seamless or Cold-finished seamless;
Size: outside diameter ≤12 3/4 (325mm);
Common grades of carbon steel: MT 1015, MT 1020, 1026, 1035;
Common grades of alloy steel: 4130, 4140, 4150;
Coating: tubing may be coated with a rust retarding oil on the outside and inside surfaces.