Amardeep is a well-known manufacturer, supplier, and distributor specializing in DIN
2393 Stainless Steel Seamless Tubes engineered for pressure-centric applications. This specific
category of stainless steel seamless tubing assumes a pivotal role in environments characterized by
extreme conditions, where ensuring the safety of individuals and the uninterrupted functioning of
machinery takes precedence.
These tubes are meticulously designed to endure intense heat, high-pressure scenarios, and exhibit
remarkable resistance to both acids and corrosion. The production process for DIN 2393 Pipes or
tubes is an intricate one, comprising more than 100 production stages, ensuring the highest
standards of quality and performance.
They prove indispensable in applications such as sewage disposal and water supply systems, where they
must withstand internal and external pressure forces. DIN 2393 BK Precision Welded Steel Tubes are
available in various configurations, including thin-wall tubes in both seamless and welded redrawn
conditions, as well as seamless thick-wall tubes. Additionally, these tubes offer versatile coating
options to cater to a wide array of environmental and operational prerequisites.
DIN 2393 Grade St 44-2 represents a type of low carbon alloy steel primarily designed for structural
purposes. It is commonly employed in conjunction with the standard DIN 2393 to manufacture a diverse
range of seamless and welded tubes.
This steel can be equated to EU S275JR, EN 1.0044, A283 Gr D, A529 Gr D, DIN RSt42-2, JIS SS400, AFNOR
E28-2, EN Fe430B, UNI Fe430B, GB Q225A, GB Q275Z, SS 1411, SS 1412, NS12142, GOST St4ps, GOST St4sp, ISO
E275B, and IS2062.
DIN 2393 St 44-2 BK exhibits a higher level of precision, ensuring a snug fit when employed in various
applications. As a result, DIN 2393 St 44-2 BK enhances the functionality of the intended application.
DIN 2393 St 52.3 is utilized for machinery components, mobile equipment, cranes, booms, chassis,
buildings, bridges, and a wide array of structural activities.
DIN 2393 St 52.3 NBK, on the other hand, is characterized by its low alloy composition and high
structural strength, making it readily weldable with other suitable steels. Its low carbon content
imparts favorable cold-forming properties, and it can be provided in either a normalized or
control-rolled condition.
DIN 2393 St 34-2 BK is ideal for manufacturing thin-walled precision constructional elements known for
their excellent surface quality.
DIN 2393 St 44-2 Precision welded steel tubes possess unique technical characteristics that determine
their suitability for a wide range of applications. These tubes find utility in diverse sectors,
including metal carpentry, automobile components, structural frameworks, agricultural machinery, gates,
and protective barriers.
DIN 2393-2 Grade St 44-2 bright drawn tubes begin as black steel tubes and undergo additional processing
in cold reduction mills. This process involves cooling the material to room temperature, followed by
annealing or temper rolling. The outcome is improved dimensional precision and an expanded array of
surface finishes.
DIN 2393 Welded Precision Steel Tubes find applications in hydraulic system steel tubes, shock absorbers
for automobiles and motorcycles, the electric industry, construction machinery, gas springs, heat
exchangers, and condensers.
DIN 2393 Grade St 44-2 is categorized as structural steel. Its mechanical properties include a yield
strength exceeding 275MPa and a tensile strength in the range of 430-560MPa. It is primarily employed
for welding, riveting, and bolting purposes. Structural Steels like ST 44-2 are in demand across a
variety of industries, including civil and industrial engineering, due to their combination of excellent
welding characteristics and guaranteed strength.
DIN 2393 St 37-2 BK is a type of low carbon steel with a carbon content of approximately 0.20%, similar
to S235JR or Q235. Due to its chemical composition, it lacks corrosion resistance. Therefore,
pre-painting or hot-dip galvanizing is often employed to protect it from corrosion.
Material Grade: St28, St34.2, St37.2, St44.2, St52.3
Surface Condition: Polished, brightness, metallic color
Size: OD 6mm-65mm,WT 1-8mm
Length: Random 10-12000mm, custom-made as well
Tolerance: +/-0.05mm. Special tolerance:+/-0.03mm
Grade and Chemical Composition
DIN 2393 Welded Precision Steel Tubes in Condition Cold Finished (Hard) - BK, Cold Finished & Stress Relieved - BKS, Annealed - GBK, Cold Finished (Soft) - BKW, Normalized - NBK
| Grade | C max | Si max | Mn min | P max | S max | Ni | Cr |
| St52.3 | 0.22 | 0.55Max | 1.60Min | 0.040 | 0.040 | ||
| St28 | 0.13 | 0.50 | 0.50 | ||||
| St34.2 | 0.15 | 0.50 | 0.50 | ||||
| St37.2 | 0.17 | 0.50 | 0.50 | ||||
| St44.2 | 0.21 | 0.50 | 0.50 |
| Steel Grade | Tensile Strength, N/mm2 (min) | Предел текучести, N/mm2 (min) | Elongation, % (min) |
| NBK - normalized | |||
| RSt 34-2 | 340 - 470 | 235 | 25 |
| RSt 37-2 | 440 - 570 | 255 | 21 |
| St 44-2 | 560 - 630 | 355 | 22 |
| BK - without heat treatment | |||
| RSt 34-2 | 480 | - | 6 |
| RSt 37-2 | 580 | - | 5 |
| St 44-2 | 640 | - | 4 |
| GBK - annealed | |||
| RSt 34-2 | 315 | - | 28 |
| RSt 37-2 | 390 | - | 25 |
| St 44-2 | 490 | - | 21 |
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