6-813mm Outer Diameter 321 Stainless Steel Seamless Pipe for High Pressure Hydraulic System
Price:
USD 3400-4400 / Ton
MOQ:
1 Ton
Delivery Time:
7-15 working days
Brand:
TISCO
Product Description
6-813mm Outer Diameter Stainless Steel Seamless Pipe 321 for High Pressure Hydraulic System
This titanium-stabilized 321 (1.4541) seamless stainless steel pipe is engineered for high pressure hydraulic and pneumatic systems that operate across a broad temperature range. The addition of titanium stabilizes the alloy against chromium carbide precipitation, giving the pipe excellent resistance to intergranular corrosion and outstanding high-temperature strength up to approximately 800 degrees Celsius in continuous service.
Its seamless construction delivers uniform wall thickness and a homogeneous grain structure, both of which are essential for withstanding the cyclic pressures and vibration found in hydraulic circuits. Available in an outer diameter range of 6 mm to 813 mm with wall thicknesses from 0.5 mm to 60 mm, the pipe is produced in standard 6-meter lengths and can be cut to precise project dimensions.
Key Features
- Titanium Stabilized 321: resists intergranular corrosion and retains strength at elevated temperatures.
- High Pressure Capable: seamless homogeneous structure withstands cyclic hydraulic pressure.
- Wide Diameter Coverage: outer diameters from 6 mm to 813 mm cover small and large bore systems.
- Dimensional Precision: cold drawn processing achieves tight tolerances for reliable fitting.
- Vibration Resistant: uniform wall and grain structure reduce fatigue failure risk.
- Full NDT Inspection: ultrasonic, eddy current, and hydrostatic testing on every batch.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | 321 (1.4541) Stainless Steel |
| Type | Seamless |
| Technique | Cold Drawn / Hot Rolled |
| Outer Diameter | 6-813 mm |
| Wall Thickness | 0.5-60 mm |
| Length | 6 m standard, custom cut |
| Standard | ASTM A312, A213, GB/T 14976 |
| NDT | UT, ET, HT |
| Surface Finish | Annealed, pickled, bright annealed |
| Application | High Pressure Hydraulic System |
Applications
The 321 seamless stainless steel pipe is widely used in high pressure hydraulic systems, pneumatic circuits, and high-temperature fluid transport across aerospace, power generation, and heavy industry. Its titanium-stabilized chemistry makes it the preferred grade for applications where the pipe is exposed to sustained heat, such as exhaust systems, heat exchangers, and turbocharger oil lines.
In hydraulic power units and industrial machinery, the pipe reliably carries pressurized oil and fluid under demanding duty cycles without leaking or fatiguing. The seamless construction provides a clean, smooth interior that minimizes turbulence and pressure drop, contributing to overall system efficiency. This combination of temperature stability, corrosion resistance, and mechanical strength makes it a versatile solution for mission-critical installations.
Packaging & Quality Assurance
Each pipe is protected with plastic end caps and wrapped in corrosion-inhibiting film before being bundled with steel straps or packed into seaworthy wooden cases. This packaging safeguards the pipe surface and ends during ocean and road transport.
Complete mill test certificates, covering chemical composition, mechanical properties, and NDT results, are provided with every order. Manufacturing is performed under an ISO 9001:2015 certified quality system, and third-party inspection by SGS or BV is available upon request.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
ShanXi TaiGang Stainless Steel Co.,Ltd
Location
Room G001-A, No. G001e, 2310 Floor 23, Building A, Zhonghai International Center, Jinci Road,Taiyuan,Shanxi,China
Contact Person
Johnny