179 
Seamless Cold Drawn Steel Tubing , Heat Exchanger & Condenser Tubing  Covers minimum wall thickness, seamless cold drawn low carbon steel tubes for Tubular heat exchangers, condensers, and similar heat transfer apparatus Sizes covered are 1/8" to 3" (Thickness Comp:Sain)
ASTM A213/213M-10
Seamless Intermediate Alloy Steel Tubes for Refinery Service Ferritic & austenitic steel boiler, superheater & Heat Exchanger
Formerly A199 & A200 Covers seamless ferritic and austenitic steel boiler, superheater, and heat Exchanger tubes. Also possible grade with H specs for higer creep-rupture Strength.
Grades T2, T5,T11,T12,T22
Size 1/8" to 5" (Thickness 0.4 to 12.7 mm)
Comp Sain
ASTM 249 
Welded Austenitic Steel Boiler Superheater and Heat Exchange Tubes U Bending available Grades TP 304/304L , TP 316/316L, TP 321, TP 347 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb, TP316, TP321, TP347, and TP348

B 161
Seamless Nickel and Nickel Alloy, Condenser and Heat Ex-changer Tubes  UNS NO2200 & UNS NO2201
ASTM B163
08 Standard Specification for Seamless Nickel and Nickel Alloy Condenser.
ASTM B111 / B111M -09
Standard Specification for Copper and Copper-Alloy Seamless Condenser, evaporators, heat exchanger Tubes and Ferrule Stock
Covers seamless tube and ferrule stock of copper and various copper alloys for Use in surface condensers, evaporators, and heat exchangers. Grades C44300, C44400, C68700, 70600, 71500

179 
Seamless Cold Drawn Steel Tubing , Heat Exchanger & Condenser Tubing  Covers minimum wall thickness, seamless cold drawn low carbon steel tubes for Tubular heat exchangers, condensers, and similar heat transfer apparatus Sizes covered are 1/8" to 3" (Thickness Comp:Sain)
ASTM A213/213M-10
Seamless Intermediate Alloy Steel Tubes for Refinery Service Ferritic & austenitic steel boiler, superheater & Heat Exchanger
Formerly A199 & A200 Covers seamless ferritic and austenitic steel boiler, superheater, and heat Exchanger tubes. Also possible grade with H specs for higer creep-rupture Strength.
Grades T2, T5,T11,T12,T22
Size 1/8" to 5" (Thickness 0.4 to 12.7 mm)
Comp Sain
ASTM 249 
Welded Austenitic Steel Boiler Superheater and Heat Exchange Tubes U Bending available Grades TP 304/304L , TP 316/316L, TP 321, TP 347 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb, TP316, TP321, TP347, and TP348

B 161
Seamless Nickel and Nickel Alloy, Condenser and Heat Ex-changer Tubes  UNS NO2200 & UNS NO2201
ASTM B163
08 Standard Specification for Seamless Nickel and Nickel Alloy Condenser.
ASTM B111 / B111M -09
Standard Specification for Copper and Copper-Alloy Seamless Condenser, evaporators, heat exchanger Tubes and Ferrule Stock
Covers seamless tube and ferrule stock of copper and various copper alloys for Use in surface condensers, evaporators, and heat exchangers. Grades C44300, C44400, C68700, 70600, 71500