seamless tubes,boiler tubes, heat exchanger tubes

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A**2/A**2M**1(***6) Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service
A**9 A**9/A**9M**8 Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Super heater Tubes
A**0 A**0/A**0M**6 Specification for Seamless Medium-Carbon Steel Boiler and super heater Tubes
A**0 A**0/A**0M**5 Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and super heater Tubes
ASTM B**2 Seamless ferritic and austenitic alloy-steel boiler, super heater, and heat-exchanger tubes
A**3 A**3/A**3M**9a Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, super heater, and Heat-Exchanger Tubes
A**9 A**9/A**9M**8e1 Specification for Welded Austenitic Steel Boiler, super heater, Heat-Exchanger, and Condenser Tubes
low carbon steel tubes for heat exchanger and boilers
ASTM A**9, DIN****5, BS***2, NFA A****5, JIS G ***1, A**2, A**0 Grade A1,A**0 Grade C, ASTM A**6, A**4, DIN****7, BS ***9, NFA A****2, JIS G***1, A**6, GB***7, GB***0, ASME SA**6, ASME SA**3, ASME SA**5, DIN****5, EN******2

Alloy steel tubes for heat exchanger and boilers
ASTM A**9, T1,T1A, T1b
ASTM A**9,T4,T5,T9,T*1,T*1,T*2,T*1
ASTM A**3,T2, T5,T5b,T5c, T9, T*1, T*2, T*7,T*1,T*2,T*1,T*2
ASTM A**4, Grade1,3,6,7,8,*1,**2. DIN****3, BS***3, JIS G***4
BS***6, JIS G***2
DIN****6, BS***4
ASME SA **3: SA**3 Grade1, SA**3 Grade 6
ASME SA**5: SA**5 P*1, SA**5 P*2, SA**5 P*2, SA**5 P5, SA**5 P1, SA**5 P9,
*4MoV**3, X*0CrMoVNb**1">DIN ****5: St*5.8, *5Mo3, *6Mo3, *3CrMo*4, *0CrMo**0, *4MoV**3, X*0CrMoVNb**1 = T*1 / P*1
JIS G***1: STB **0, STB **0
EN ******1: P**5 TR1, P**5 TR2