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MTSJCJ-2 Type Plastic Inspection Manhole Impact Testing Machine

It is used to test the impact‑resistance performance of plastic manhole base plates and shaft walls, serving as a testing instrument for inspection agencies, manufacturers, and construction units. A drop hammer with a 50 mm radius of curvature and a mass of 1 kg is allowed to fall freely from a height of 2.5 m onto the central portion of the main flow channel of the manhole base plate. Following the impact, the base plate is inspected for cracks or any other phenomena that might affect its performance, thereby evaluating its impact resistance. The device also features automatic measurement of the impact velocity at the moment of impact, rapid capture of the falling hammer, and prevention of secondary impacts.

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Pipe and Fitting Testing Equipment

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lbt@lbt.ltd

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MTSJCJ-2 Type Plastic Inspection Manhole Impact Testing Machine

Description

Product Introduction

It is used to test the impact‑resistance performance of plastic manhole base plates and shaft walls, serving as a testing instrument for inspection agencies, manufacturers, and construction units. A drop hammer with a 50 mm radius of curvature and a mass of 1 kg is allowed to fall freely from a height of 2.5 m onto the central portion of the main flow channel of the manhole base. Following the impact, the base is inspected for cracks or any other phenomena that might affect its performance, thereby evaluating its impact resistance. The device also features automatic measurement of the impact velocity at the moment of impact, rapid capture of the falling hammer, and prevention of secondary impacts.

Key features:

1. Modular design, primarily comprising a specimen support base, a lifting mechanism, a protective‑tube drop‑hammer assembly, a power system, and a control unit.

2. It employs the vacuum‑lifting hammer principle, delivering strong suction and high efficiency. The hammer falls freely to impact the specimen; after impact, the hammer is promptly captured and rapidly lifted back to the impact height, thereby preventing secondary impacts on the specimen.

3. The cantilever‑type, height‑adjustable structure provides an open testing space, facilitating specimen installation. Prior to impact, the falling hammer is magnetically held within the protective tube and extends together with the tube into the center of the flow channel at the bottom of the inspection well. Once the protective tube is properly positioned, pressing the impact button allows the hammer to fall freely; after impact, the system automatically captures the hammer and re‑magnetically secures it inside the tube. Upon completion of the test, the protective tube is raised, ensuring a safe and reliable operating procedure. During flow‑channel impact testing, this setup is suitable for inspection wells with base diameters ranging from Ф315 mm to Ф1600 mm.

4. The protective pipe is installed vertically, with an inner-wall roughness of less than 0.8, resulting in low friction and a drop‑hammer velocity of at least 95% of the theoretical value. A positioning and detection device is mounted at the bottom of the protective pipe, enabling it to descend automatically and stop 50 mm above the impact point; alternatively, by pressing the stop button, it can be positioned at any point within its travel range.

5. The dual-redundant design of the limit sensors ensures safer and more reliable positioning control for the guard tube’s lifting and lowering operations.

Implementation Standard:

BSEN 13598-2:2009 “Plastic pipe systems for non‑pressurized underground stormwater and sewage drainage — Unplasticized poly(vinyl chloride) (PVC‑U), poly(propylene) (PP) and poly(ethylene) (PE) — Annex D” DBJ53T25-2010 “Technical Specification for the Application of Plastic Drainage Inspection Manholes” CJ/T326-2010 “Plastic Inspection Manholes for Municipal Drainage” CJ/T233-2016 “Plastic Inspection Manholes for Building and Residential Area Drainage”

Technical Specifications

Project	Scope / Parameters
Well base diameter range	Φ315–Φ1600 (mm)
Diameter range of the well base subjected to side-wall impact	Φ315–Φ1400 (mm)
Drop hammer impact height	2.5m
Impact hammer type	D90
Hammer mass	1.0kg
Guardrail lifting stroke	1.5m
Hammering method	Vacuum adsorption
Air source	Compressed air at 0.5 MPa to 0.8 MPa
Power supply	AC 220V·50Hz

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FAQs

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We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

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Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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MTSJCJ-2 Type Plastic Inspection Manhole Impact Testing Machine

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