Cold Drawn Seamless (CDS) and Hot Finished Seamless (HFS). Both CDS and HFS steel tubes provide strength and durability, but the process used to create each type of tubing provides slightly different advantages. Deciding whether Cold Drawn Seamless or Hot Finish Seamless is best will depend on how you plan to use the tubing for your application.
Cold Drawn Seamless mechanical tubing is created by hot rolling SAE 1018 carbon steel, then drawing it at room temperature. During the drawing process, the pointed end of the tube is passed through a die. Force is used to stretch the steel into the desired thickness and shape and smooth the surface. This type of steel tubing meets ASTM A519 standards. It provides high yield strength, close tolerances and a smooth finish that is preferable for many mechanical applications.
Permanent Steel Manufacturing Co.,Ltd offers Cold Drawn Seamless and Hot Finished Seamless mechanical steel tubing manufactured to ASTM A519, in a variety of configurations.
Carbon Specifications and Grades:
ASTM A519 1010 - 1045
ASTM A519 Hot Finish and Cold Drawn
ASTM/ASME A/SA106 B/C
ASTM/ASME A/SA 333 1/6
Quenched and Tempered
Normalized, Quenched and Tempered
Stress Relieved Annealed
Hot finish mechanical 2" - 26" OD and up to 4" walls
Cold drawn mechanical 0.875" - 12" OD and 0.083" - 1.375" walls
ASME Carbon pipe OD's, non-schedule walls 2.50" - 26" nominal and up to 4" walls
Hydraulic componentsAutomotive parts
Hot Finish Seamless steel tubing: