DIN2391 ST37.4 ST52.4 hydraulic pressure line cold drawn seamless pipe
DIN2391 ST37.4 ST52.4 hydraulic pressure line cold drawn seamless pipe mainly used in pressure line ,
can bear high pressure ,also can bend in various shape of tubes.
DIN is a Germany standard.
Bright annealing seamless precision steel tubes is our main product,Torich keep various sizes of high pressure
seamless Steel tubes and Galvanizing tubes,so small quantity is also available and can be quick deliver to your side.
What we can support is that no any corrision after 120 hours' salt spary test.Cold galavanized(eletrogalvanizing)in bright pipe.
It will be strong anti corrosion & rust when passivated in zinc coating.
Torich’s target is make you easy to buy precision seamless steel tubes from China easy.
Reasonable price with good quality in efficient way.
Tolerance
Name | Scope mm | DIN seriesmm |
| OD | 04-30 | ±0.08 |
| OD | 31-40 | ±0.15 |
| OD | 41-50 | ±0.20 |
| OD | 51-60 | ±0.25 |
| Wall | 0.5-7 | ±10% |
Chemical Composition
| Steel grade | C
max. | Si
max. | Mn
max. | P
max. | S
max. | Altot
min. |
| Name | Number |
| E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.015 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | -- |
| E355 | 1.0580 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | -- |
Surface:
NBK
Galvanization/Galvanized/Zinc Coated
Blue White Zinc (Trivalent Chromium Passivation)
Plating Colour Zinc(Trivalent Chromium Passivation)
Yellow, Army-Green
Phosphated/Black Phosphated
Surface quality
Without oxidization
No crack
No fold
No rolling fold
No scar
No laminar defect
What we can do in our testing center
Physis laboratory
Chemical spectrometer
Pressure blasting machine
Metallographic analysis
Salt Spray Test
Stock size list.
| ODmm | WT mm |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 6 | 1.5 |
| 8 | 1 |
| 8 | 1.5 |
| 10 | 1 |
| 10 | 1.5 |
| 10 | 2 |
| 10 | 2.5 |
| 12 | 1 |
| 12 | 1.5 |
| 12 | 2 |
| 12 | 2.5 |
| 12 | 3 |
| 12.7 | 1.63 |
| 14 | 1 |
| 14 | 1.5 |
| 14 | 2 |
| 14 | 2.5 |
| 14 | 3 |
| 15 | 1 |
| 15 | 1.5 |
| 15 | 2 |
| 15 | 2.5 |
| 15 | 3 |
| 15.88 | 1.63 |
| 15.88 | 2.03 |
| 16 | 1 |
| 16 | 1.5 |
| 16 | 2 |
| 16 | 2.5 |
| 16 | 3 |
| More sizes are available, pls email me for details. | |
Key words
Precision Steel Tubes
Precision Seamless Steel Tubes
Precision Welded Steel Tubes
Precision DOM Steel Tubes
High Precision Seamless Steel Tubes/Pipe
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