DIN2391 ST37.4 High Precision Cold Drawn Seamless Carbon Steel Tube for Hydraulic Cylinders
Price:
Negotiable
MOQ:
1 ton
Delivery Time:
Within 50 days if production
Brand:
Hongbao
Product Description
DIN2391 ST37.4 OD6 High Precision Seamless Carbon Steel Tube Precision Steel Tube For Brake Pipes
Product Overview
DIN2391 E235 high precision seamless carbon steel tube for brake pipes is manufactured to precise specifications, ensuring consistent wall thickness, smooth surface, and accurate dimensions. Ideal for automotive brake systems, these tubes provide reliable and efficient fluid transfer, enhancing vehicle safety and performance.
Dimensional Tolerances
| OD | GB/T3639(GB8713) | DIN2391(EN10305) | Our Tolerance | Best Quality |
|---|---|---|---|---|
| 4-30mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.02mm |
| 31-40mm | ±0.15mm | ±0.15mm | ±0.05mm | ±0.03mm |
| 41-50mm | ±0.20mm | ±0.20mm | ±0.05mm | ±0.03mm |
| 51-60mm | ±0.25mm | ±0.25mm | ±0.08mm | ±0.03mm |
| 61-70mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| 71-160mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| Tolerance in WT | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm |
Manufacturing Processes
| Process | Diameter | Length | Precision | Inner Hole Roughness |
|---|---|---|---|---|
| Cold Rolled | 30-100mm | ≤12 m | H8-H10 | 0.4-1.6 |
| Cold Draw | 30-250mm | ≤12 m | H8-H10 | 0.8-1.6 |
| Honing | 40-500mm | ≤12 m | H8-H9 | 0.4-0.8 |
| Rolling | 40-400mm | ≤7 m | H8 | 0.4 |
Inner Diameter Tolerances
| Inner Diameter | H8 | H9 | H10 | 5-30mm |
|---|---|---|---|---|
| 30mm | ±0.033 | ±0.052 | ±0.084 | ±0.080 |
| 30-50mm | ±0.039 | ±0.062 | ±0.100 | |
| 50-80mm | ±0.046 | ±0.074 | ±0.120 | |
| 80-120mm | ±0.054 | ±0.087 | ±0.140 | |
| 120-180mm | ±0.063 | ±0.100 | ±0.160 | |
| 180-250mm | ±0.072 | ±0.115 | ±0.185 | |
| 250-315mm | ±0.081 | ±0.130 | ±0.210 | |
| 315-400mm | ±0.089 | ±0.140 | ±0.230 |
Quality Testing
- 100% PMI, Spectro Chemical Analysis Test for Raw Material
- 100% Dimension & Visual Examination
- Mechanical Properties Test including Tension Test, Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test, Reversed Flattening Test
- 100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)
Technical Specifications
Material Grade: 10#~45#, 16Mn, ST35~ST52
Length: As customer's requirement
Standard: DIN2391, EN10305, GB/T3639, GB8713
Application: Hydraulic cylinder, automobile
Heat Treatment: According to customer's requirements
Delivery Time: 30 days or according to customer requirements
Packaging Options
- Bundle packing
- Marking as per customer's requests
- Paint on the pipe as per customer request
- Pipe caps as customer required
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Company
Jiangsu Hongbao Group Co., Ltd.
Location
DAXIN TOWN,ZHANGJIAGANG,JIANGSU P.R.CHINA
Contact Person
Angela