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Plastic Pipes

Mechanical testing in the plastic pipe industry determines ring stiffness, impact resistance, and tensile performance, directly preventing pipe bursts and deformation risks. UnitedTest can cover full-dimensional mechanical testing of pipes, complies with ISO,ASTM,EN et.c, international standards, and provides customized testing solutions.

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In the construction engineering and building materials industry, mechanical testing determines the compressive and tensile properties of materials such as concrete and steel, which is core to ensuring the safety and durability of buildings. UnitedTest can cover the full range of building material mechanical tests, complies with ISO, ASTM international standards, and provides customized testing solutions for compressive, tensile, and other properties.

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Mechanical testing in the transportation industry concerns the load-bearing and fatigue resistance performance of core components such as vehicles, tracks, and containers, directly ensuring transport safety and equipment durability. UnitedTest can cover mechanical testing for all types of transportation materials, complying with national and international standards, and provides customized testing solutions including tensile, fatigue, and impact tests.

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Home >> Products >> Plastic Pipe Industry Testing >> Pipe Hydrostatic Pressure Test >> End cap of pipe pressure test

End cap of pipe pressure test

10~1600mm, 304# stainless steel end closures

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Main Structural Features of UnitedTest end cap:

Material: Typically made of 304 stainless steel, which is corrosion-resistant and has high strength.
Design: The split structure facilitates installation, achieving a sealing rate of 100%, and supports quick disassembly and assembly.

Stainless Steel End Caps For Pipe Hydrostatic Pressure and Burst Testing are designed for internal hydrostatic pressure testing of pipes and fittings. It is used to seal the sample in order to generate internal pressure in the sample, with the characters: ISO 1167 Type A structure, External type: for diameter 16mm till 2000mm, three to six petals structure(not welding), no leakage under high pressure, Nickle coating, reliable and durable, 100% success installation.

The end caps without connecting rods are used for PE, PVC, and PP pipes. The depth of the end cap from the O-ring to the internal bottom is specific, ensuring that the cap is tight when pressure is applied to the edges and oval PE pipes. The UnitedTest end cap complies with ASTM D 1598, ASTM D 1599, and ISO 1167 standards.

1, Annual production end closure tens of thousands sets to ensure our technical and quality of this important pipeline hydrostatic pressure test fixtures;;
2, We adopt raw material is 45# carbon steel or 304# stainless steel, several type end closures for pipe or pipe fitting;
3, ISO 1167 Type A structure, External type: for diameter 16mm till 2000mm, three to six petals structure(not welding), no leakage under high pressure, Nickle coating, reliable and durable, 100% success installation.

End cap of pipe pressure test

Key features

Material
Size

304# stainless steel
Cast iron for large size.

Standard dimensions: φ16, φ20, φ25, φ32, φ40, φ50, φ63, φ75, φ90, φ110, φ125, φ140, φ160, φ180, φ200, φ225, φ250,φ280, φ315, φ355, φ400, φ450, φ500, φ560, φ630, φ710, φ800, φ900, φ1000, φ1100, φ1200, φ1400, φ1600, φ1800, φ2000.

Inch size: 1/2" , 3/4" , 1" ,1-1/4" , 1-1/2" , 2" , 2-1/2" , 3" , 4" , 5" , 6" , 8" , 10" , 12" , 14" , 16" , 18" , 20“, 24"

Main technical specification

Inch size: 1/2" , 3/4" , 1" ,1-1/4" , 1-1/2" , 2" , 2-1/2" , 3" , 4" , 5" , 6" , 8" , 10" , 12" , 14" , 16" , 18" , 20“, 24"

Material: Cast iron (for above 110mm), or 304 stainless steel .

Other name:
End cap for HDPE pipe, End closure for PVC pipe, pipe fitting etc.,
HYDROSTATIC PRESSURE OR INTERNAL PRESSURE TEST MACHINE FOR PVC(U) AND HDPE, Plastic Pipe Hydrostatic Pressure Testing Equipment, pipe internal pressure testing machine; thermoplastic pipe, pipe fitting hydrostatic pressure testing machine; internal hydrostatic pressure testing; pipe burst pressure testing, pipe long time pressure test.

What's the End cap of pipe pressure test?

Understand the pipe end cap for hydrostatic pressure test:

The hydrostatic pressure test end cap is specialized equipment used to detect the pressure-resistant performance of pipes, primarily used for static hydraulic tests and burst tests of plastic pipes (such as PVC, PE, PPR, etc.). It conducts pressure testing by sealing the ends of the pipes to assess their long-term static hydraulic strength and pressure resistance.

Core Functions:

Sealing Test: Achieved through silicone sealing rings and radial sealing design, firmly sealing the ends of the pipes to prevent liquid leakage during testing.

Specification Compatibility: Supports various diameters (such as Φ16-Φ1600mm), suitable for testing the requirements of different materials such as PVC, PE, PPR, and composite pipes.

Compliance with Standards: Adheres to national standards such as GB/T 6111 and GB/T 15560, as well as international standards like ISO 1167.

Standard

ISO 1167 Thermoplastics pipes resistance to internal pressure test –

ISO 1167: 2006 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids -- Determination of the resistance to internal pressure.

ISO 1167 test method specifies a general test method for determining the resistance to internal hydrostatic pressure at a given temperature of thermoplastics pipes, fittings and piping systems for the transport of fluids. The method accommodates water-in-water, water-in-air and water-in-liquid tests.

Hydrostatic pressure testing is a valuable method for assessing the strength and integrity of pressurized systems, ensuring that they can meet operational demands without failure. Hydrostatic pressure testing can evaluate these items by filling pipelines, tanks, or containers with water before pressure is applied to detect any potential leaks or issues.

Hydrostatic pressure tester is critical across multiple industries, from pipeline engineering to industrial piping. It helps prevent costly failures or leaks by verifying whether the system can safely reach the specified pressure levels.

ISO 13259 Test for pipe system leak tightness of elastomeric sealing ring type joints –

ISO 13259 Leak tightness test Thermoplastics piping for underground non-pressure stipulated determining method of the leak tightness of elastomeric sealing ring type joints buried thermoplastics piping. This standard specifies three basic test pressures for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems.

ISO 13259 Leakage tightness test machine.

Unless otherwise specified in the referring standard, the methods pressures used are the following:

- p1: internal negative air pressure (partial vacuum);

- p2: a low internal hydrostatic pressure;

- p3: a higher internal hydrostatic pressure.

ASTM D1599 Pipe short-time hydraulic burst pressure test –

ASTM D1599 is titled "Standard Test Method for Resistance to Short-Time Hydraulic Pressure of Plastic Pipe, Tubing, and Fittings." It is a fundamental short-term, destructive pressure test used to determine the ultimate failure pressure (often called the "burst pressure") of thermoplastic pipe, tubing, or fittings under rapidly applied internal pressure at a specified temperature. Typically completed within 60–70 seconds, mainly for quality control and short-term design validation.

ASTM D1598 test for long-term hydrostatic pressure of plastic pipe –

ASTM D1598 is a standard test method that determines the time-to-failure of thermoplastic and reinforced thermosetting/resin pipes under constant internal pressure at a controlled temperature, which is critical for establishing hydrostatic design basis and ensuring long-term pipeline reliability.

ISO 13254 Plastic pipe and joints watertightness test by internal hydrostatic pressure –

ISO 13254 specifies a hydrostatic pressure test method for evaluating the watertightness of two categories of non-pressure thermoplastics components: (1) multi-piece fabricated products (e.g., custom-molded fittings) and (2) joints in thermoplastics piping systems.The test validates sealing performance under simulated service conditions for drainage, sewerage, and stormwater systems.

The standard aims to ensure consistent assessment of leak resistance, critical for applications like drainage, irrigation, and underground conduits where fluid ingress could compromise system integrity.

ISO 13844 Test method for leak tightness under negative pressure, angular deflection and deformation –

ISO 13844 specifies a method for testing the leak tightness under negative pressure, angular deflection, and deformation of assembled joints between elastomeric-sealing-ring-type sockets made of plastic or metal and plastic pressure pipes.

ASTM D4161 Coupling leakage hydrostatic pressure test for GRP fiberglass Pipe Joints seals –

ASTM D5514 Large-Scale Hydrostatic Puncture Testing of Geosynthetics –

ASTM D5514/D5514M Standard Test Methods for Large-Scale Hydrostatic Puncture Testing of Geosynthetics

ASTM D5514 test method evaluates the stress/time properties of geosynthetics by using hydrostatic pressure to compress the geosynthetic over synthetic or natural test bases consisting of manufactured test pyramids/cones, rocks, soil, or voids.

This test method allows the user to determine the relative failure mode or points of failure for geosynthetics, or both.

ISO 9080 Long Term Hydrostatic Pressure Test for Thermoplastic Pipe testing –

ISO 9080:2012 Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation.

The damage of PE-HD pipes is related to temperature, load size, and load duration. An increase in working pressure or working temperature can lead to a decrease in pipe damage time, that is, a shortened service life of the pipe. PE HD pipelines generally require a service life of 50 years or more, and current standards extrapolate the ability of pipes to withstand static hydraulic pressure for decades or even 100 years of use through shorter tests. The two standard systems of ISO and the United States have similar methods for predicting the long-term strength of PE-HD pipelines, both of which predict the long-term static water strength of pipes through hydrostatic testing. However, the theoretical basis of the two methods is slightly different.

ISO 4437-1 Tensile, Hydrostatic pressure test for Plastics PE piping systems for the supply of gaseous fuels –

ISO 4437-1:2024 Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) Part 1: General

ISO 4437-1:2014 specifies the general properties of polyethylene (PE) compounds for the manufacture of pipes and fittings intended to be used for the supply of gaseous fuels. It also specifies the test parameters for the test methods referred to in this International Standard.

ASTM F714 PE Pipe Specification (Pressure test, Apparent Tensil test, MFI) –

ASTM F714 Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter.

ASTM F714 is a standard specification for polyethylene (PE) plastic pipe (DR - PR) based on outside diameter, which specifies multiple tests covering dimensional inspection, material property tests, and pressure performance tests to ensure the quality and reliability of PE pipes.

ISO 13255 Airtightness Test of plastic pipe joints for soil and waste discharge inside buildings –