End Closure For Plastic Pipes
Engineered for sealing pipe samples during hydrostatic fluid and
bursting pressure testing.
Product Overview
The DN450mm high-pressure end caps, tailored for hydrostatic and
bursting tests, are engineered and fabricated specifically to
support internal hydrostatic pressure and bursting performance
evaluations of pipes and pipe fittings. These specialized
components deliver reliable airtight sealing for test specimens,
enabling the controlled buildup of internal pressure required to
complete rigorous hydrostatic and bursting test procedures.
Structural Composition
This Casting A-type structural fixture adopts a rod-free
intermediate configuration, endowing it with superior
pressure-bearing capacity to withstand ultra-high test pressures.
The fixture is composed of a suite of precision-engineered
components, including:
- Semi-circular base
- O-type silicone rubber sealing ring
- Pressure ring
- Fastening clamp
- Fastening bolts
- Compression bolts
- Vent valve
Each part works in tandem to ensure airtight sealing and stable
structural performance during high-pressure testing procedures.
Applications
These specialized DN450mm high-pressure end caps are typically
deployed to seal pipe specimens of PVC, PE, PP-R, ABS, and
composite materials. They facilitate a wide range of pressure-based
performance assessments, including:
- Hydrostatic pressure tests
- Bursting strength tests
- Negative pressure tests
Compliance Standards
GB/T 6111, GB/T 18252, GB/T 15560, EN921, ISO1167, ASTM D 1598/1599
Available Models
φ8, φ10, φ16, φ25, φ32, φ40, φ50, φ63, φ75, φ90, φ110, φ125, φ140,
φ160, φ180, φ200, φ225, φ250, φ280, φ315, φ355, φ450, φ500, φ560,
φ630, φ710mm, and other specifications.
Technical Parameters
| Product Name | Stainless steel caps |
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| Color | Silvery white |
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| Outline Dimension | φ700*340mm |
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| Applicable Pipe Diameter | φ450~φ455mm |
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| Max. Pressure | 4MPA |
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| Seal Ring Size | φ445*15mm |
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| End Cap Connector | M12*1.25, 1/4'', 3/8" (customizable) |
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| Type | Type A |
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| Packing | Standard export wooden |
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| Certificate | ISO |
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| Delivery Time | 7 days |
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Frequently Asked Questions
Q1: What is the maximum pressure resistance rating of the fixtures
for pipe hydrostatic testing machines?
A1: The fixtures are engineered with a robust structural design to
withstand ultra-high test pressures, with a maximum pressure
resistance of up to 20 MPa (200 bar). This performance enables them
to support rigorous bursting tests and long-term hydrostatic
pressure tests for high-strength pipe materials such as PE and
composite pipes.
Q2: What range of pipe diameters can these hydrostatic testing
fixtures accommodate?
A2: The fixtures offer broad compatibility with pipe diameters
ranging from DN20 to DN450, covering most common specifications of
plastic pipes, composite pipes, and pipe fittings. Customized
fixture sizes can also be provided to match non-standard pipe
dimensions.
Q3: What material is used for the sealing components of the
fixtures, and what is their temperature resistance range?
A3: The sealing components adopt high-performance O-type silicone
rubber sealing rings, which can maintain excellent airtightness
within a temperature range of 15-95℃. For high-temperature testing
scenarios, fluororubber sealing rings can be customized to
withstand temperatures up to 150℃.
Q4: What structural features do the fixtures have to ensure stable
performance during testing?
A4: The fixtures adopt a casting A-type rod-free structure,
eliminating intermediate tie rods that may cause stress
concentration. They are assembled with precision components
including pressure rings, fastening clamps, and vent valves, which
not only enhance pressure resistance but also ensure uniform force
application to avoid specimen deformation during testing.
Q5: How long does it take to install and disassemble the fixtures,
and is the operation process convenient?
A5: The fixtures are designed with a quick-release fastening bolt
system, which allows a single operator to complete the installation
and disassembly of a pipe specimen within 3-5 minutes. The
integrated vent valve also simplifies the air exhaust process
before testing, effectively improving the overall testing
efficiency.
Q6: Do the fixtures comply with international testing standards,
and what types of tests are they applicable to?
A6: The fixtures fully comply with ISO, ASTM, and GB standards for
pipe hydrostatic testing. They are applicable to a variety of test
types, including internal hydrostatic pressure tests, bursting
strength tests, long-term pressure endurance tests, and negative
pressure tests for PVC, PE, PP-R, ABS, and composite pipe
specimens.
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