Hot rolled seamless (HRS) tube (also known as HFS or Hot finished seamless) is a lower-cost product than CDS tube and is a good material for applications that do not require the close dimensional tolerances and quality of surface finish that CDS tube provides. If tight tolerances are required, machining is used to finish the product to exact specifications. Hot finished seamless tubing is easy to machine to meet any requirements. HRS is used for products that require a thicker wall and a high strength material.
Made from 1026 Steel
Meets ASTM A519 (Hot Finished)
Hot rolled mechanical tubing is produced by heating a solid billet or bloom and then rotary piercing, plug, or Assel mill rolling it, and then final processing through multiple pass size-reducing mills. Tolerances and finish are similar to other hot worked steel products. Range of sizes and grades are more restricted than cold finished by the nature of the process involved. This tubing is used where dimensional accuracy and surface finish are unimportant or secondary, or where desired tolerances, finish, and final mechanical properties are to be attained by machining and heat treatment. HRS tubing is manufactured to outside diameter (OD) and wall thickness (W) dimensions.
Determining the proper tube size is essential when producing a machined part from seamless mechanical tubing. To calculate the tube size needed to machine a given part, several important points should be considered:
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