Seamless pipes can be manufactured in various grades depending on the intended application and industry requirements. Some common grades for seamless pipes include:

Carbon Steel:

ASTM A106: Standard specification for seamless carbon steel pipe for high-temperature service.

ASTM A53: Standard specification for seamless and welded black and hot-dipped galvanized steel pipe.

Stainless Steel:

ASTM A312: Standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes.

ASTM A213: Standard specification for seamless ferritic and austenitic alloy steel boiler, superheater, and heat-exchanger tubes.

Alloy Steel:

ASTM A335: Standard specification for seamless ferritic alloy-steel pipe for high-temperature service.

These are just a few examples of grades commonly used for seamless pipes. The specific grade selected will depend on factors such as the material properties required, operating conditions, and the industry standards applicable to the particular application.