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EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION

Brand Name YUHONG
Model Number E235+N,ST37.4,ST52.4
Certification ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin CHINA
Minimum Order Quantity 100KGS
Payment Terms L/C, T/T
Delivery Time 7DAYS
Packaging Details Plywood case,Bundle
OD 3/4" (19.05), 1"(25.4) , 1-1/4"(31.75), 1-1/2"(38.1), 2" (50.8), 2-1/2"(63.5) , 3" (76.2)
USAGE Heat Exchanger Tube, Boiler Tube
STANDARD EN10305-1
MATERIAL ST37.4, ST52.4,E235+N
WT 0.89,1,1.24,2.11MM....
Detailed Product Description

EN10305-1 E235+N NBK SEAMLESS PRECISION TUBE FOR AUTO APPLICATION​

 

Delivery Status: NBK (+N) BKW (+LC) GBK (+A) BKS (+SR) BK (+C) OD x WT = 4~120 x 0.5~15mm

DIN2391 St52.4+N Phosphated Hydraulic Tube

 

Description:
Precision steel tube
Grade:
St 30 Si / St 30 Al
/ St 35 / St37 / St37.4 / St45 / St 52 / St52.4
/ E215 / E235 / E355
Precision in size,Bright for the surface, high ability of mechanical performance
Standard: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535
 
DIN2391 Precision steel pipe
STEEL GRADE: ST30Si, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, etc
Size:(mm)
Out Dimensions: 6 mm ~ 350 mm
Wall Thickness: 0.8 mm ~30mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)

 

Final supply conditions:
 
Cold finished(hard)BK
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high
resistance to deformation.
 
Cold finished(soft)BKW
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further
processing allows a certain degree of cold forming (e.g. bending, expanding)
 
Cold finished and stress-relieved BKS
Heat treatment is applied following the last cold forming process. Subject to appropriate processing
conditions, the increase in the residual stresses involved enables both forming and machining to a certain
degree.
 
Annealed GBK The last cold forming process is followed by annealing in a controlled atmosphere.
 

 

Normalized NBK
The last cold forming process is followed by annealing above the upper transformation point in a controlled

atmosphere.

 

Chemical Composition:
Steel grade

 

Chemical composition,
as a percentage by mass

 

Symbol

 

Material
number

 

C max.Si max.Mn

 

P
max.

 

 

S
max.

 

St 30 Si1.02110.100.30<=0.550.0250.025
St 30 Al1.02120.100.05<=0.550.0250.025
St 351.03080.170.35<=0.400.0250.025
St 451.04080.210.35<=0.400.0250.025
St 521.05800.220.55<=1.600.0250.025

 

The following alloying elements may be added:
Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

 

 
Steel gradeChemical Composition(%):
Steel nameSteel numberC maxSi maxMnP maxS maxAl min
E2151.02120.100.050.700.0250.0250.025
E2351.03080.170.351.200.0250.025-
E3551.05800.220.551.600.0250.025-

 

 

Product Tags: DIN2391 Seamless Boiler Tube   Heat Exchanger Seamless Precision Tube   Galvanized Seamless Precision Tube  
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