astm a312 seamless and welded austenitic stainless steel pipe

ASTM A312 is the standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipe. The pipe is intended for high-temperature and general corrosive service. ASTM A312 covers austenitic steel pipe intended for high-temperature and general corrosive service. Several grades of austenitic steels are included. These grades are TP304, TP304L, TP316, TP316L, TP321, TP347, TP347H, TP310, and TP310S. Most austenitic steels covered by this specification are cold worked to produce higher strength and higher hardness. The most common process is cold drawing, but some sizes are cold drawn and then heat treated to produce a higher strength product.

ASTM A312 is usually furnished in the annealed and pickled condition but it can also be furnished in the heat treated condition. Heat treated condition is covered in a separate specification, ASTM A312/A312M. The heat treated grades are TP304H, TP304LH, TP316H, TP316LH, TP321H, TP321LH, TP347H, TP347LH, and TP310H. The heat treated grades are generally used in higher temperature and corrosive service.

ASTM A312 is also available in duplex stainless steel grades. The duplex grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The duplex grades are TP304D, TP316D, and TP321D.

ASTM A312 is also available in super duplex stainless steel grades. The super duplex grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The super duplex grades are TP304SD, TP316SD, and TP321SD.

ASTM A312 is also available in austenitic-ferritic stainless steel grades. The austenitic-ferritic grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The austenitic-ferritic grades are TP304F, TP316F, and TP321F.

ASTM A312 is also available in high-temperature service grades. The high-temperature grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The high-temperature grades are TP304HT, TP316HT, and TP321HT.

ASTM A312 is also available in explosive welded grades. The explosive welded grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The explosive welded grades are TP304EW, TP316EW, and TP321EW.

ASTM A312 is also available in corrosion resistant grades. The corrosion resistant grades are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated grades are covered in a separate specification, ASTM A312/A312M. The corrosion resistant grades are TP304CR, TP316CR, and TP321CR.

ASTM A312 is also available in welded and unwelded condition. The welded condition is covered in a separate specification, ASTM A312/A312M. The unwelded condition is available in grades TP304, TP304L, TP316, TP316L, TP321, TP347, TP347H, TP310, and TP310S.

ASTM A312 is also available in heat exchanger and condenser tubes. The heat exchanger and condenser tubes are generally furnished in the annealed and pickled condition but they can also be furnished in the heat treated condition. The heat treated condition is covered in a separate specification, ASTM A312/A312M. The heat exchanger and condenser tubes are TP304H, TP304LH, TP316H, TP316LH, TP321H, TP321LH, TP347H, TP347LH, TP310H, and TP310S.

ASTM A312 is also available in thin wall stainless steel grades. The thin

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