Standards：
GB3087 Chinese national standard
GB5310 Chinese national standard
ASTM A179 heat exchanger tube
ASTM A192
ASME SA210 Boiler and pressure vessel code of ASME
ASME SA213 Boiler and pressure vessel code of ASME
DINl7175 Deutsches industrial standard~
Application：
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5．88Mpa and
operating temperature below 450 oc)；as the pipes on the heated sides of high•pressure boilers，economizers，overheaters，reheaters and pipes
for petrochemical industry(with the operating pressure above 9．8Mpa and operating temperature ranging between 450~C~650~C1
Specifications of ma}or steel：
10、20、20G、20MnG、25MnG、15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、10Cr9Mo1VNb、SA210A1、SA210C、SA213 T11、SA213 T12、SA213 T22、SA213 T23、SA213 T91、SA213 T92、ST45.8/Ⅲ、15Mo3、13CrMo44、10CrMo910etc.