Application: Suitable for pipeline steel pipes, vessel steel pipes, and fluid pipes used in low and medium-pressure boilers.
Additional Technology: Inclusive of tensile tests, flattening tests, leak tightness tests, surface inspections, and product analyses. Options for end types include beveled end or plain end, and the pipes can be varnished or have plastic caps added based on customer requirements.
Surface: Choices include leaving the surface bare or painted, galvanized, or oiled, as per client preference.
Delivery Condition: Available in either a Hot Rolled or Cold Drawn state.
Steel Grade: Comprising St37, St44, and St52 grades.
DIN 1629 encompasses three fundamental steel grades (ST37, ST44, ST52). This standard defines Seamless Circular Tubes of Non-Alloy Steels intended for use in the construction of chemical plants, pressure vessels, pipe systems, and general mechanical and engineering applications. The primary steel grades outlined in the Din 1629 specification are suitable for various welding methods, including gas fusion welding, arc welding, flash butt welding, electric pressure welding, and gas pressure welding. A comprehensive range of products, including seamless steel pipes, welded steel pipes, and galvanized steel pipes, is readily available.
The specifications and application limits outlined in this standard generally apply, unless otherwise specified in codes of practice tailored to specific fields of application. Examples include the Technische Regeln fur Dampfkessel (TRD) (Technical Rules on Steam Boilers) or the Technische Regeln fur Druckbehalter (TRB) (Technical Rules on Pressure Vessels), as well as AD-Merkblatter (AD Instruction Sheets).
DIN 1629 Steel Pipe Chemical Composition:
Chemical Composition(%)
Steel Grade
C
Si
Mn
P
S
St37
≤0.17
-
-
≤0.035
≤0.035
St44
≤0.21
-
-
≤0.035
≤0.035
St52.0
≤0.22
≤0.55
≤1.60
≤0.035
≤0.035
DIN 1629 Steel Pipe Mechanical Property:
Mechanical Properties
Steel Grade
Tensile strength(Mpa)
Yield point(Mpa)
Elongation(%)L
Elongation(%)T
St37
350-480
≥235
≥25
≥23
St44
420-550
≥275
≥21
≥19
St52.0
500-650
≥355
≥21
≥19
DIN 1629 Steel Pipe Equivalent steel grade:
DIN 1629
EN
BS NFA 49.210/49.112
ASTM 53
Grade St 37
EN 10216.1Grade P235 T1
Grade TU 37 B TU E 220 A
Grade B
Grade St 44
EN 10216.1Grade P275T1
Grade TU 42 B TU E 235 A
Grade B
Grade St 52-0
EN 10216-3Grade P355N
NFA Grade P355N
ASME SA 381 Grade Y 52
CG Steel provides DIN1629 steel pipes available in stock or sourced from reputable steel mills. Additionally, we offer steel fabrication services, allowing steel pipes to undergo various processes such as cutting (customized to any size and shape), drilling, welding, milling, and machining, tailored to your specifications. If you're considering purchasing DIN1629 steel pipe products, feel free to reach out to us for the most up-to-date pricing. Alternatively, refer to the table below for equivalent steel grades of DIN1629.
Elevated temperature upper yield stress values of DIN 1629 Steel Pipe
Steel Grade
Yield stress value by working temperature(Thickness increasing)
