For your Seamless PIPES, you can choose the STEEL you want:

Seamless stainless steel pipes

ASTM/ASME A/SA 312 TP 304/304L, TP 316/316l, TP 321

ASTM/ASME A/SA 269 TP 304/304L, TP 316/316L

Seamless alloy steel pipes for high temperature service

ASTM/ASME A/SA 335 P91, P9, P5, P11, P22

Seamless carbon steel pipes for low temperature service

ASTM/ASME A/SA 333 GR. 6, GR. 6/X52 modified + NACE MR0175

Seamless carbon steel pipes for high temperature service

API 5L GR. B, X42, X52 + NACE MR0175

ASTM/ASME A/SA 106 GR. B, GR. C, 53 GR. B + NACE MR0175

Seamless carbon steel material special grades

API 5L GR. X60, X65, X70 + NACE MR0175