TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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SAE J526 Welded Low Carbon Steel tube for Automotive Fuel Line
High Pressure Oil Tubes for Diesel Engine Galvanized Precision Tube , NBK Precision Steel Tube , Passivated Steel Tubes
High Pressure Oil Tubes for Diesel Engine
Production process:
Cold drawing bright heat treatment without oxidization 100%nondestructive testing inside flushing under the high pressure antirust oiling outer and inner surface.
Main Application:
to be used in hydraulic system, automobile parts and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.
Standards: DIN2391, EN10305-1, EN10305-4 etc.
Steel Grade: St37.4, St35(E235), St45(E255), St52(E355),etc.
Outer Diameter: 4-60 mm
Wall Thickness: 0.5-8mm
Chemical composition(%,max)
| Steel Grade | C | Si | Mn | Cr | Ni | Mo | S | P | Cu |
| 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | 0.15 | 0.3 | - | - | - | - |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.25 | 0.25 | - | 0.03 | 0.025 | 0.3 |
| 35 | 0.32-0.40 | 0.17-0.37 | 0.50-0.80 | 0.25 | 0.3 | - | 0.04 | 0.035 | 0.3 |
| 45 | 0.42--0.45 | 0.17-0.37 | 0.50-0.80 | 0.25 | - | - | - | - | - |
| 40X | 0.36-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | 0.3 | - | 0.035 | 0.035 | 0.3 |
| 30ХГСА | 0.28-0.34 | 0.90-1.20 | 0.80-1.10 | 0.80-1.10 | 0.3 | - | 0.005 | 0.025 | - |
Mechanical Properties:
| Steel Grade | Tensile Strength, N/mm2 (min) | Yield Strength, N/mm 2 (min) | Elongation, %(min) |
| 10 | 343 | 206 | 24 |
| 20 | 412 | 245 | 21 |
| 35 | 510 | 294 | 17 |
| 45 | 589 | 323 | 14 |
| 40X | 618 | - | 14 |
| 30ХГСА | 491 | - | 18 |
