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Seamless Carbon Steel Boiler Tubing / tube / tubes,DIN2391 ST37.4 NBK

Categories Boiler Tube
Brand Name: YUHONG
Model Number: ST37.4, ST52.4
Certification: ISO9001-2008, API 5L, API 5CT
Place of Origin: CHINA
MOQ: 100KGS
Payment Terms: L/C, T/T
Delivery Time: 7DAYS
Packaging Details: PLYWOOD CASE,BUNDLE,PALLET
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)
LENGTH: 6000MM,6096MM,SRL,DRL
MATERIAL: ST37.4, ST52.4
USAGE: Heat Exchanger Tube, Boiler Tube
STANDARD: DIN 2391C NBK
Company Info.
Yuhong Group Co.,Ltd
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Seamless Carbon Steel Boiler Tubing / tube / tubes,DIN2391 ST37.4 NBK

Seamless Carbon Steel Boiler Tubing / tube / tubes,DIN2391 ST37.4 NBK


DIN2391 Precision Cold Drawn Seamless Pipes and Tubes, Gr St35 St45 St52 St37.4, Cold Finished Seamless Pipe use for Hydraulic and Pneumatic.

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


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-

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