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A steel pipe with a prototype cross section is called a circular pipe. Round pipe is divided into welded round pipe and seamless steel pipe according to production process. Welded steel pipe can be divided into spiral welded pipe and straight seam welded pipe.
Seamless steel tube for boiler, application is : High, medium and low pressure boilers and pressure bearing.
Typical grade |
Specification |
Delivery condition |
Surface treatment |
ASTM A178/A178M |
Annealing, normalizing, |
Oil immersion, painting, |
|
ASTM A192/A192M |
|||
320 CFS,360, 440, 243, |
BS3059 |
||
P195TR1/P195TR2, |
EN10216 |
||
ST35.8, ST45.8 |
DIN 17175 |
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ST37.0, ST44.0, ST50.0 |
DIN 1629 |
||
JIS G3454 |
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JIS G3461 |
Tubes for heat exchangers and condensers whose application is : Heat exchanger, condenser, superheater or similar heat transfer equipment.
Typical grade |
Specification |
Delivery condition |
Surface treatment |
ASTM A179 |
ASTM A179/A179M |
Annealing, normalizing, |
Oil immersion, painting, |
Oil casing, oil pipeline pipe whose application is :Pipelines for gas, water and oil transmission in the petroleum and natural gas industries steel pipes for casing or tubing of oil and gas wells
Typical grade |
Specification |
Delivery condition |
Surface treatment |
PSL1 L175/A25, |
API 5L |
Annealing, normalizing, |
Oil immersion, painting, |
PSL1, PSL2, PSL3, |
API 5CT |
Seamless steel pipe for fluid transportation whose application is : For conveying fluid
Typical grade |
Specification |
Delivery condition |
Surface treatment |
ASTM A106/A106M |
Annealing, normalizing, |
Oil immersion, painting, |
|
A53 Grade A,B |
ASTM A53/A53M |
Precision seamless steel pipe for machinery and automobile, whose application is : Automobile half shaft sleeve and drive axle housing shaft tube Processing and manufacturing of precision equipment, instruments and structural parts
Typical grade |
Specification |
Delivery condition |
Surface treatment |
St35,St45,St52 |
DIN2391 |
Annealing, normalizing, |
Oil immersion, painting, |
ASTM A519 |
|||
1010, 1020, 1025, 1035, 1040 |
ASTM A513 |
||
CFS,CFS3A,CFS4-11 |
BS6323 |
||
E215,E235,E355 |
EN10305-1 |
||
SCM415TK, SCM 430 TK, |
JIS G 3441 |
Shipbuilding pipe whose application : It is used for manufacturing seamless steel pipes for marine boilers, superheaters and class I and II pressure pipe systems
Typical grade |
Specification |
Delivery condition |
Surface treatment |
320,360,410,460,490 |
DNV-GL,LR,ABS, |
Annealing, normalizing, |
Oil immersion, painting, |
Alloy material tube whose application is : Boilers, superheaters and heat exchangers
Typical grade |
Specification |
Delivery condition |
Surface treatment |
ASTM A213/A213M, |
Annealing, normalizing, |
Oil immersion, painting, |
|
|
|||
T11, T22, T5 |
ASTM A199/A199M |
||
ASTM A209/A209M |
|||
10CrMo5-5, 11CrMo9-10, |
EN10216-2 |
||
JIS G3462 |
Internally threaded pipe whose application is : Boiler, chemical industry, electric power and other industries are applied to the water wall of subcritical and supercritical boilers above 300000 kW
Typical grade |
Specification |
Delivery condition |
Surface treatment |
ASME SA210/SA210M |
Cold drawing, normalizing |
Oil immersion, painting, |
|
ASME SA213/SA213M |