carbon small diameter precision seamless steel tube
Product name
Material
Standard
Size(mm)
Application
Low temperature tube
16MnDG 10MnDG 09DG 09Mn2VDG 06Ni3MoDG ASTM A333
GB/T18984- 2003 ASTM A333
OD:8-1240* WT:1-200
Apply to - 45 ℃ ~ 195 ℃ low temperature pressure vessel and low temperature heat exchanger pipe
High-pressure boiler tube
20G ASTMA106B ASTMA210A ST45.8-III
GB5310-1995 ASTM SA106 ASTM SA210 DIN17175-79
OD:8-1240* WT:1-200
Suitable for manufacturing high pressure boiler tube, header, steam pipe, etc
Petroleum cracking tube
10 20
GB9948-2006
OD: 8-630* WT:1-60
Used in oil refinery furnace tube, heat exchanger tube
Low medium pressure boiler tube
10# 20# 16Mn,Q345
GB3087-2008
OD:8-1240* WT:1-200
Suitable for manufacturing various structure of low and medium pressure boiler and locomotive boiler
General structure of the tube
10#,20#,45#,27SiMn ASTM A53A,B 16Mn,Q345
GB/T8162- 2008 GB/T17396- 1998 ASTM A53
OD:8-1240* WT:1-200
Apply to the general structure,
engineering support, mechanical processing, etc
Oil casing
J55,K55,N80,L80 C90,C95,P110
API SPEC 5CT ISO11960
OD:60-508* WT:4.24-16.13
Used for extraction of oil or gas in oil Wells casing, used in oil and gas well sidewall
Chemical Composition(%):
Standard
Steel Grade
C
Si
Mn
P
S
BS6323-4
CFS3
≤0.20
≤0.35
≤0.9
≤0.050
≤0.050
CFS4
≤0.25
≤0.35
≤1.20
≤0.050
≤0.050
CFS5
≤0.23
≤0.50
≤1.50
≤0.050
≤0.050
CFS8
0.40-0.55
≤0.35
0.50-0.90
≤0.050
≤0.050
ASTM A519
SAE 1010
0.08-0.13
/
0.30-0.60
≤0.04
≤0.05
SAE 1020
0.18-0.23
/
0.30-0.60
≤0.04
≤0.05
SAE1045
0.43-0.50
/
0.60-0.90
≤0.04
≤0.05
JIS G3445
STKM11A
≤0.12
≤0.35
≤0.60
≤0.040
≤0.040
STKM13A
≤0.25
≤0.35
0.30-0.90
≤0.040
≤0.040
DIN2391 standard steel and heat treatment process delivery conditions:
Delivery Condition
Heat Treatment Process
+C
Cold drawn / hard. After the final cold forming no heat treatment.
+LC
Cold drawn / soft. After the final heat treatment limiting deformation cold drawn, allowing a degree of cold deformation
+SR
Steel heat treatment is applied after the last cold deformation process, the result of state steel after due process, the residual stress deformation and machining makes a certain degree of difficulty increases.
+A
In the final step of the steel pipe after cold deformation, placed in a controlled atmosphere furnace for annealing.
+N
In the final step of the steel pipe after cold deformation, placed in a controlled atmosphere furnace at a temperature above the phase transition point to continue annealing.