Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

ASTM A333 GR 6 SEAMLESS PIPE for low temperature


ASTM A333 GR 6 SEAMLESS STEEL PIPE for low temperature 

 

ASME SA333 Gr. 6 Gr. 3 
Range: 15 NB UP TO 1200 NB IN SCH 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S,80, XS,

Seamless and Welded Steel Pipe for Low-Temperature Service

ASTM A333 GR 6 SEAMLESS PIPE

ASTM A333 GR6,ASTM A333 GR3,16Mn,STPL39,TT ST35N,Q345  

 GRADE

Grade 1, Grade 3, Grade 4, Grade 6

CHEMICAL COMPOSITION

STANDARD

 

GRADE

 

CHEMICAL COMPOSITION

 

C

 

Si

 

Mn

 

P

 

S

 

Cr

 

Ni

 

Cu

 

Mo

 

V

 

Al

 

ASTM A333

 

Grade 1

 

≤0.30

 

 

0.401.06

 

≤0.025

 

≤0.025

 

           

Grade 3

 

≤0.19

 

0.180.37

 

0.310.64

 

≤0.025

 

≤0.025

 

 

3.183.82

 

       

Grade 4

 

≤0.12

 

0.180.37

 

0.501.05

 

≤0.025

 

≤0.025

 

0.441.01

 

0.470.98

 

0.400.75

 

   

0.040.30

 

Grade 6

 

≤0.30

 

≥0.10

 

0.291.06

 

≤0.025

 

≤0.025

 

           
 
A333 Gr6 low temperature steel pipe can 16Mn low temperature steel pipe instead of it?
Principle it can, but within a certain range of applications can be considered alternative.
 
The low temperature steel containing nickel and non-nickel-containing steel two categories. A333 Gr6 steel pipe belonging to non-nickel steel, the low temperature toughness of an aluminum deoxidation fine grain steel. As low temperature steel pipe, its ingredients SCO must ensure that there are sufficient fracture toughness to prevent brittle fracture at low temperature use. The experiments show that the presence of impurities such as S, P, O, N, H is very clear, therefore, the adverse effect on weld toughness sure weld harmful magazine containing at least during the welding process. Better the A333.6 steel pipe welding performance, and generally does not require preheating, but when the wall thickness ≥ 25 or ambient temperature is below +5 ° C, proper warm-up measures to be taken to reduce the weld crack sensitivity, improve joints at low temperature. Instead of 16Mn still be used with caution.
In some low temperature pipe can replace each other, which mainly depend on the actual use, of course, to obtain the owner's consent.

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