Blasting Strength Testing Service

Blasting Strength Testing Service – Comprehensive Evaluation of Material Resistance to Internal Pressure Rupture for Packaging, Pipes, Seals and Pressure‑Containing Components

As an ISO/IEC 17025 accredited independent testing laboratory, we offer specialised blasting strength testing services to manufacturers, engineering contractors, and quality assurance teams across the packaging, piping, aerospace, automotive, medical device, and industrial equipment sectors. Blasting strength – the maximum internal pressure that a material, component, or assembly can withstand before rupture or burst – is a critical performance parameter for products that must contain or withstand internal pressure, such as packaging containers, pipes, hoses, seals, valves, and pressure vessels. Our test protocols apply a controlled, continuously increasing internal pressure (hydraulic or pneumatic) to the test article until failure, quantifying the burst pressure, the failure mode, and the deformation characteristics. All methods are aligned with ISO, ASTM, EN, and GB/T standards, including ASTM D1599 (Bursting Strength of Plastic Tubing), ASTM D4632 (Bursting Strength of Geotextiles), ASTM D774 (Bursting Strength of Paper), ISO 1402 (Rubber and plastics hoses – Hydrostatic testing), ISO 527‑2 (Tensile test of plastics), GB/T 13508 (Bursting strength of plastic packaging), and GB/T 8804 (Tensile test of pipes). Our inspection and test reports are recognised by the National Medical Products Administration (NMPA), the State Administration for Market Regulation (SAMR), the Ministry of Industry and Information Technology (MIIT), and international certification bodies for product registration, type approval, and quality assurance.

Materials and Products We Regularly Test

Our blasting strength test facilities accommodate a wide range of material types and product forms. Typical test articles include:

Plastic pipes and tubing – PVC, PE, PP, ABS, and composite pipes for water, gas, and chemical transport
Rubber and plastic hoses – hydraulic hoses, pneumatic hoses, and flexible tubing
Packaging containers – plastic bottles, blow‑moulded containers, pouches, and bags
Seals, gaskets and diaphragms – elastomeric seals, O‑rings, and flexible diaphragms
Geotextiles and fabrics – woven and non‑woven geotextiles, tarpaulins, and canvas
Paper, paperboard and corrugated board – packaging materials, boxes, and cartons
Pressure vessels and tanks – small‑scale pressure vessels, accumulators, and gas cylinders
Medical devices and packaging – catheter tubing, sterile packaging, and blister packs
Aerospace and automotive components – fuel tanks, air ducts, and flexible connectors

Hydraulic Burst Test – The Most Common Method

Hydraulic burst test procedure – pressurisation with water or compatible test fluid – We fill the test article with clean water (or another specified test fluid) and connect it to a calibrated hydraulic pump (pressure range 0.1‑100 MPa, accuracy ±0.1 %). The pressure is increased at a controlled rate (typically 0.1‑0.5 MPa/s) until the test article ruptures or fails. The peak pressure (burst pressure) is recorded, and the failure mode (rupture, leakage, or excessive deformation) is noted. The burst pressure is compared to the specified minimum or to the design pressure to determine the safety factor (burst pressure / design pressure).
Burst pressure measurement – for determining the maximum pressure capacity – The burst pressure is the maximum pressure reached before failure. It is a direct measure of the material’s resistance to internal pressure. The test is performed on a minimum of five specimens, and the average burst pressure and the standard deviation are reported.
Hydraulic burst of pipes and tubing – ISO 1402 / ASTM D1599 / GB/T 13508 – We test pipes and tubing by sealing the ends (using standardised end caps or plugs) and pressurising the inside. The test is performed at room temperature (or at the specified service temperature). The burst pressure is recorded, and the burst pressure per unit wall thickness (in MPa/mm or kPa/mm) is calculated.
Hydraulic burst of packaging containers – ASTM D1599 / GB/T 13508 – We test packaging containers (bottles, pouches, and bags) by sealing the opening and pressurising the inside. The test is performed at room temperature (or at the specified service temperature). The burst pressure is recorded, and the leak point (if any) is noted.
Hydraulic burst of geotextiles and fabrics – ASTM D4632 / ASTM D774 / GB/T 13508 – We mount the fabric or geotextile specimen in a specialised fixture (membrane burst tester) and apply hydraulic pressure to one side of the specimen. The pressure at which the specimen ruptures is recorded as the burst strength (in kPa or MPa).
Hydraulic burst at elevated or reduced temperatures – for simulating service conditions – We perform the hydraulic burst test at a specified temperature (e.g., 40 °C, 60 °C, -10 °C) using a temperature‑controlled bath or chamber. The burst pressure at the specified temperature is compared to the room‑temperature burst pressure to determine the temperature sensitivity of the material.

Pneumatic Burst Test – For Gas‑Service and Low‑Pressure Applications

Pneumatic burst test – pressurisation with air or inert gas – For low‑pressure applications (e.g., packaging, flexible ducts), we perform a pneumatic burst test by pressurising the test article with dry air or nitrogen (pressure range 0.1‑5 MPa). The pressure is increased at a controlled rate until the test article ruptures. The burst pressure is recorded, and the failure mode is assessed.
Safety precautions – for pneumatic testing – Because pneumatic testing stores more energy than hydraulic testing, we implement enhanced safety measures: a blast shield around the test article, a pressure relief valve set at 110 % of the test pressure, remote pressurisation controls, and a cleared exclusion zone.
Pneumatic burst test for flexible packaging – ASTM F2054 / ISO 11607 – for blister packs and pouches – We test the burst strength of flexible packaging by sealing the package and pressurising it with air until it bursts. The burst pressure and the failure mode (leak, burst, or seal failure) are recorded.

Burst Strength Determination for Specific Materials – Packaging, Pipes and Geotextiles

Packaging burst strength – ASTM D1599 / ISO 11607 / GB/T 13508 – For plastic bottles and containers, we measure the burst strength (in kPa or MPa) and the volume expansion (in %) at burst. The burst strength is a measure of the container's resistance to internal pressure (e.g., carbonated beverages, pressurised products).
Pipe and tubing burst strength – ISO 1402 / ASTM D1599 / GB/T 13508 – For pipes and tubing, we measure the burst pressure (in MPa) and the hoop stress at burst (in MPa). The hoop stress is calculated from the burst pressure, the pipe diameter, and the wall thickness. The burst pressure is used to determine the pressure rating of the pipe.
Geotextile and fabric burst strength – ASTM D4632 / ASTM D774 / GB/T 13508 – For geotextiles and fabrics, we measure the burst strength (in kPa or MPa) using a membrane burst tester. The burst strength is used to assess the resistance of the fabric to puncture and to tensile rupture.
Paper and paperboard burst strength – ASTM D774 / GB/T 454 – For paper and paperboard, we measure the burst strength (in kPa) using a Mullen burst tester. The burst strength is a standard quality control parameter for packaging materials.

Failure Analysis and Structural Assessment – Understanding the Failure Mechanism

Visual inspection – for identifying the failure mode – After the burst test, we inspect the failed specimen to determine the failure mode: (a) ductile burst – characterised by bulging and tearing (for metals and ductile plastics); (b) brittle fracture – characterised by clean fracture without deformation (for brittle materials); (c) leakage – the specimen leaks, but does not burst; (d) seal failure – the seal fails before the test article bursts; (e) delamination – for composite materials, the layers separate before burst.
Microscopic examination – ASTM E3 / ISO 4496 – for identifying the fracture mechanism – For metallic and composite materials, we examine the fracture surface using a stereomicroscope (and, where required, a scanning electron microscope – SEM) to identify the fracture mechanism (ductile, brittle, fatigue, or intergranular).
Wall thickness measurement – for assessing the effect of deformation – We measure the wall thickness of the specimen at the point of burst (or at the point of maximum deformation). A significant reduction in wall thickness (> 20 %) indicates a ductile failure.
Deformation measurement – for assessing the structural response – We measure the deformation (the change in diameter or the change in length) of the test article during the pressurisation. The deformation is correlated with the burst pressure to assess the structural response of the material.

Regulatory Compliance and Product Certification – Supporting Industry Standards

Our blasting strength testing services are performed in accordance with the most widely used international and national standards. The most commonly requested include:

ASTM D1599 – Standard Test Method for Resistance to Rupture of Plastic Tubing – for bursting strength of plastic tubing
ASTM D4632 – Standard Test Method for Bursting Strength of Geotextiles – for geotextiles
ASTM D774 – Standard Test Method for Bursting Strength of Paper – for paper and paperboard
ISO 1402 – Rubber and plastics hoses – Hydrostatic testing – for hydraulic hoses
ISO 11607 – Packaging for terminally sterilised medical devices – for packaging burst strength
GB/T 13508 – Bursting strength of plastic packaging – the Chinese national standard for packaging burst strength
GB/T 8804 – Test method for tensile properties of pipes – for pipe tensile properties (used as a reference)
ASTM F2054 – Standard Test Method for Burst Testing of Flexible Package Seals – for flexible packaging

Report Acceptance and Regulatory Recognition

All blasting strength tests are conducted under our ISO/IEC 17025 accreditation, using calibrated hydraulic pumps, pressure transducers, and environmental chambers, all traceable to national and international reference standards. Our final test reports include: a complete description of the test article (material, dimensions, manufacturer), the test method and conditions (pressure ramp rate, temperature, test fluid), the measured parameters (burst pressure, deformation, failure mode), a statistical summary (mean, standard deviation, coefficient of variation), and a clear pass/fail verdict against your specified acceptance criteria. These reports are accepted by the National Medical Products Administration (NMPA), the State Administration for Market Regulation (SAMR), the Ministry of Industry and Information Technology (MIIT), and international certification bodies for product registration, type approval, and quality assurance. Bilingual (English/Chinese) versions are available to facilitate submissions to domestic and international authorities and to support your global market access.