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DIN2391/C ST37.4 Bright Precision Steel Tube Hydraulic Tube

Availability:
Quantity:
  • 6x1-42x3mm

  • Xuzhou Global

  • 73043190

Product Introduction:

Standard: GB/T3639,DIN2391/C,EN10305-1,EN10305-4

Heating treatment: NBK, GBK, BKS, BK

Surface treatment: Bright, galvanized, phosphated

Material: ST37.4,ST35,ST45,ST52,E235,E355

Size: OD 4*WT 0.5mm -OD60*WT8mm

Length: Fixed Length 6 meters or 5.8 meters, Random Length 2-12 meters or as requests of customers

Feature:

No oxide layer on both sides of tube

High pressure, no leakage

High precision, smooth surface

Cold bending without deformation

No crack during flaring and flattening

Anti-rust on inside and outside


Chemical Composition:


Steel grade Chemical composition%
C Si Mn P S
ST37.4/E235 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
ST35 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
ST45 0.17~0.23 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035
ST52/E355 0.13 〜0.19 0.20 〜0.60 1.20 〜1.60 ≤0.030 ≤0.030

Mechanical Property:


Steel grade Yield strength a Tensile strength Elongation
ReH Rm A
min. min. min.
MPa MPa %
ST37.4/E235 ≥235 340 to 480 ≥25
ST35 ≥235 340 to 480 ≥25
ST45 ≥255 410 to 520 ≥25
ST52/E355 ≥355 490 to 630 ≥22

Tolerance:

OD/mm Tolerance/mm ID/mm Tolerance/mm Straightness/mm
4~30 ±0.08 ±0.08~±0.15 0.1/1000
30~38 ±0.15 ±0.15~±0.20
38~50 ±0.20 ±0.20~±0.25
50~80 ±0.25~±0.35 ±0.25~±0.35


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The products of our company are:precision steel pipes, honed tubes & piston rods for hydraulic cylinders. As one of the leading manufacturers in China, confirming to DIN2391/C, EN10305 and SAE J524 standard.
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