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Carbon Steel
EN10305
E235 E355
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EN 10305-4 E235 E355 (+)N hydraulic black phosphate line seamless pipe manufacturer
Product Name: EN 10305-4 E235 E355 (+)N Hydraulic Black Phosphate Line Seamless Pipe
Manufacturing Standard: Compliant with EN 10305-4
Steel Grades: E235, E355 (+)N
Surface Treatment: Black Phosphate Coating
Production Method: Seamless Process
Hydraulic steel tube | |||||
Standard | Material | Delivery | Surface | Sizes | |
ASTM | A822-A450 | A822 | 1) BA 2)Black phosphating 3) Galvanizing Zinc Layer thickness more than 8um |
OD0.079-2.36 inch ×WT0.012-0.394inch | |
SAE | J524 | 1008-1015 | |||
Other steel grades also available upon request | |||||
Hydraulic steel tube | |||||
Standard | Material | Delivery | Surface | Sizes | |
DIN | 2391/1630/2445 | ST37.4 ST52.4 | NBK | 1) BA 2)Black phosphating 3) Galvanizing | OD2 -60mm × WT0.3 -10mm |
EN | 10305-4 | E235 E355 | (+)N | ||
BS | 3602 | CFS 360 | Zinc Layer thickness more than 8um | ||
Other steel grades also available upon request | |||||
SIZE TOLERANCE | |||||
NAME |
Scope (mm) |
GB Series (mm) |
DIN series (mm) | Enterprise internal control standards (mm) |
Special high-precision (mm) |
Out diameter
| 2-30 | ±0.10 | ±0.08 | ±0.05 | ±0.03 |
31-40 | ±0.15 | ±0.15 | ±0.05 | ±0.03 | |
41-50 | ±0.20 | ±0.20 | ±0.08 | ±0.03 | |
51-60 | ±0.25 | ±0.25 | ±0.08 | ±0.03 | |
Wall thickness | 0.3-10 | ±10%; MIN±0.15 | ±10% | ±10%; MIN±0.05 | ±10%; MIN±0.03 |
1. Material Selection
Premium E235/E355 steel grades are selected to ensure superior mechanical properties and structural reliability.
2. Tube Formation
Utilizing advanced hot or cold perforation technology to achieve seamless tube formation with uniform material structure.
3. Precision Sizing
Through cold rolling/drawing processes, exact dimensional specifications are achieved while maintaining optimal wall thickness consistency.
4. Surface Treatment
Black phosphating coating is applied to enhance corrosion resistance, reduce friction coefficients, and improve wear characteristics.
5. Quality Verification
Comprehensive testing protocol including:
Non-destructive eddy current examination
Hydrostatic pressure validation
Precision dimensional verification
Product Characteristics
Precision Engineering: Maintains strict dimensional and geometric tolerances per industrial standards
Advanced Materials: E235/E355 (+N) steel grades provide exceptional strength and durability
Surface Optimization: Phosphate coating ensures corrosion protection and reduced fluid friction
Application Versatility: Suitable for hydraulic systems, mechanical engineering, and precision transmission applications
Customization Capability: Available in customized dimensions and lengths to meet specific requirements
Typical Applications
Hydraulic system pipelines and pressure transmission lines
High-precision mechanical drive components
Automotive hydraulic and transmission systems
Industrial equipment requiring reliable fluid transfer
Product Summary
The E235/E355 black phosphated seamless tube represents a specialized solution for high-pressure hydraulic transmission applications. Manufactured from quality carbon/low-alloy steel and enhanced through advanced phosphating treatment, these tubes deliver exceptional corrosion resistance and wear performance, ensuring long-term operational stability in demanding hydraulic systems.
EN 10305-4 E235 E355 (+)N hydraulic black phosphate line seamless pipe manufacturer
Product Name: EN 10305-4 E235 E355 (+)N Hydraulic Black Phosphate Line Seamless Pipe
Manufacturing Standard: Compliant with EN 10305-4
Steel Grades: E235, E355 (+)N
Surface Treatment: Black Phosphate Coating
Production Method: Seamless Process
Hydraulic steel tube | |||||
Standard | Material | Delivery | Surface | Sizes | |
ASTM | A822-A450 | A822 | 1) BA 2)Black phosphating 3) Galvanizing Zinc Layer thickness more than 8um |
OD0.079-2.36 inch ×WT0.012-0.394inch | |
SAE | J524 | 1008-1015 | |||
Other steel grades also available upon request | |||||
Hydraulic steel tube | |||||
Standard | Material | Delivery | Surface | Sizes | |
DIN | 2391/1630/2445 | ST37.4 ST52.4 | NBK | 1) BA 2)Black phosphating 3) Galvanizing | OD2 -60mm × WT0.3 -10mm |
EN | 10305-4 | E235 E355 | (+)N | ||
BS | 3602 | CFS 360 | Zinc Layer thickness more than 8um | ||
Other steel grades also available upon request | |||||
SIZE TOLERANCE | |||||
NAME |
Scope (mm) |
GB Series (mm) |
DIN series (mm) | Enterprise internal control standards (mm) |
Special high-precision (mm) |
Out diameter
| 2-30 | ±0.10 | ±0.08 | ±0.05 | ±0.03 |
31-40 | ±0.15 | ±0.15 | ±0.05 | ±0.03 | |
41-50 | ±0.20 | ±0.20 | ±0.08 | ±0.03 | |
51-60 | ±0.25 | ±0.25 | ±0.08 | ±0.03 | |
Wall thickness | 0.3-10 | ±10%; MIN±0.15 | ±10% | ±10%; MIN±0.05 | ±10%; MIN±0.03 |
1. Material Selection
Premium E235/E355 steel grades are selected to ensure superior mechanical properties and structural reliability.
2. Tube Formation
Utilizing advanced hot or cold perforation technology to achieve seamless tube formation with uniform material structure.
3. Precision Sizing
Through cold rolling/drawing processes, exact dimensional specifications are achieved while maintaining optimal wall thickness consistency.
4. Surface Treatment
Black phosphating coating is applied to enhance corrosion resistance, reduce friction coefficients, and improve wear characteristics.
5. Quality Verification
Comprehensive testing protocol including:
Non-destructive eddy current examination
Hydrostatic pressure validation
Precision dimensional verification
Product Characteristics
Precision Engineering: Maintains strict dimensional and geometric tolerances per industrial standards
Advanced Materials: E235/E355 (+N) steel grades provide exceptional strength and durability
Surface Optimization: Phosphate coating ensures corrosion protection and reduced fluid friction
Application Versatility: Suitable for hydraulic systems, mechanical engineering, and precision transmission applications
Customization Capability: Available in customized dimensions and lengths to meet specific requirements
Typical Applications
Hydraulic system pipelines and pressure transmission lines
High-precision mechanical drive components
Automotive hydraulic and transmission systems
Industrial equipment requiring reliable fluid transfer
Product Summary
The E235/E355 black phosphated seamless tube represents a specialized solution for high-pressure hydraulic transmission applications. Manufactured from quality carbon/low-alloy steel and enhanced through advanced phosphating treatment, these tubes deliver exceptional corrosion resistance and wear performance, ensuring long-term operational stability in demanding hydraulic systems.
