Hydraulic Pressure Pipe
Hydraulic Pressure Pipe
Hydraulic Pressure Pipe Supplier
Hydraulic pressure seamless steen the aerospace industry,in the aerospace industry,in the oil and gas sector,in the industrial manufacturing field.Their unique material properties, precise manufacturing process, diverse applications, and outstanding performance make them an irreplaceable part of modern engineering and manufacturing.
The seamless nature of these pipes is a major advantage. Without weld seams, there are no potential weak points, which significantly reduces the risk of leaks and failures under high pressure.
This high - pressure tolerance enables hydraulic systems to operate efficiently even in the most challenging circumstances. The smooth inner surface of seamless steel pipes minimizes fluid friction. REHOND is your best choice.
Hydraulic Pressure Pipe Specification
| Product Name | Hydraulic Pressure Seamless Steel Pipe |
|---|---|
| Manufacturing Standard | ASTM A106, ASTM A53, ASTM A179, DIN2391, EN10216, JISG3454, JISG3441 etc. |
| Steel Grade | GR.A, GR.B, GR. C, 10#, 20#, 35#, 45#, STK 500, STK540, STK 500, SPTG370, STPG410, STS370/410/480, 1008, 1020, 1013, 4140, 5130 etc. |
| Product Types | Engineering Pipe, Tubing and Casing, Roller Pipe, Drilling Pipe, Automobile pipe, etc. |
| Outer Diameter | 10 - 120mm |
| Wall Thickness | 0.5mm ~ 20mm |
| Length Range | 0.5 - 12M |
| Pipe Coating | Oiling, Lacquering, Hot-Dip Galvanizing, Powder Painted, Electro-Galvanized |
| Pipe End Type | Square End, Bevelled End, Threaded End, Grooved End, Shouldered End |
Supply Condition
| Cold drawn / hard (+C) | No heat treatment after last cold forming process. |
|---|---|
| Cold drawn / soft | After last heat treatment there is a light finishing pass (cold drawing). |
| Cold drawn (+SR) | After the final cold forming process the tubes are stress relieve annealed. |
| GBK (+A) | After the final cold forming process the tubes are annealed in a controlled atmosphere. |
| NBK (+N) | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. |
Hydraulic Pressure Test for Seamless Steel Pipes
Hydraulic pressure testing is a fundamental and crucial quality assurance measure for seamless steel pipes. It serves to verify that the pipes can safely and reliably withstand the internal pressures they are designed for during actual service.
Hydrostatic Test Procedure
Establish the supply system and connect a high-precision pressure-generating device, such as a calibrated high-pressure pump.
The pipes are gradually filled with water (hydrostatic medium) to completely expel all internal air, ensuring an incompressible test environment.
Internal pressure is slowly increased at a strictly controlled rate to avoid sudden shock or mechanical stress peaks.
Once the specified test pressure is reached, it is held constant for a mandatory period to inspect for micro-leaks or structural deformations.
After successful verification, the pressure is gradually released in a controlled manner to safely return the pipe to ambient state.
Seamless Pipe vs. Welded Pipe Comparison
Seamless Pipe
• Higher investment cost than welded pipe
• No welding seam on the entire tube body
• Made of solid round steel bars
• High OD and ID tolerance for hydraulic fittings
• Can bear extreme high-pressure surges
• Thickness tolerance is stable and accurate
Welded Pipe
• Cheaper option compared to seamless pipes
• Notable welding seam present on tube
• Main raw material is steel coils and strips
• High production efficiency
• Thickness tolerance is moderately precise
• Suitable for low to medium pressure applications only
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