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Standards
GB3087 Chinese national standard
GB5310 Chinese national standard
ASTM A106 GR.B
ASME SA210 Boiler and pressure vessel code of ASME
DINl7175 Deutsches industrial standard~

ASTM A192(Standard specification for seamless carbon steel boiler tubes for high-pressure service)
ASTM A179(Standard specification for seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes)
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 highpressure 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
102020G20MnG25MnG15CrMoG12Cr2MoG12Cr1MoVG12Cr2MoWVTiB10Cr9Mo1VNbSA210A1SA210CST45.8/15Mo313CrMo4410CrMo910etc.
 

Standard: API 5CT
Steel Grade: J55, K55, N80
Outside Diameter: 33.4-273 mm
Wall Thickness: 4-20 mm

Standard: ASTM/ASME A213,ASTM A333,ASTM A335
Steel Grade: T11, T12, T22, T91, TP304, TP304L, TP316, TP316L, TP347
Outside Diameter: 5-90 mm
Wall Thickness: 0.5-15 mm

Standard: ASTM/ASME A312/ASTM A269
Steel Grade: TP304, TP304L, TP310S, TP316, TP316L, TP321, TP347, TP347H
Outside Diameter: 6-630 mm
Wall Thickness: 1-30 mm

Standard: ASTM/ASME A519
Steel Grade: 1010, 1020, 1035, 4130
Outside Diameter: 10-114 mm
Wall Thickness: 1-20 mm

Standards
GB,81 62 Chinese national standard
ASTM A53 Standard of American Society of Testing Materials
ASME SA53 Boiler and pressure vessel--c-Ojrde of ASME
Application
Seamless steel tubes for manufacturing pipelines.vessels,equipment and mechanical structures
Models of major steeI tubes
1 0,20,3545,Q345,1 5CrMo,1 2Crl MoV,A53A,A53B,SA53A,SA53B, etc.

Standard
GBT8163 Chinese national standard
Application
General seamless steel tubes for conveying fluids
Models of major steel tubes
10.20,Q345,etc.

Standard
API SPEC 5LAPI Standard
GB/T9711.2CNS
Outside Diameter:20mm to 630mm
Use
Used as oxygen, water, and oil delivery pipe in oil and natural gas industry.
Main Steel Pipe Model
B,X42,X52,X60,X65,X70,ST 52.3/S355J2H/E355/FE510