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LBTA-139 Plastic Flexural Properties Three-Point Bending Fixture (250 mm)

Name: LBTA-139 Plastic Flexural Properties Three-Point Bending Fixture (250 mm)
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

This fixture, in conjunction with a testing machine, is used for flexural testing of specimens made from various materials. It complies with the requirements of standards such as GB/T 9341 “Determination of Flexural Properties of Plastics” and ISO 178:2003.

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Testing machine accessories, fixtures, and tooling components

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lbt@lbt.ltd

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+86-15102211717

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LBTA-139 Plastic Flexural Properties Three-Point Bending Fixture (250 mm)

Description

Product Introduction:

Technical Specifications:

Name	Three-point bending fixture for plastic flexural properties (250 mm)
Material	45#
Surface treatment	Sandblasting nickel plating
Scope of Use	Standard requirements of GB/T 9341-2008 “Determination of Flexural Properties of Plastics,” ISO 178:2003, and others.
Fixture Specifications	The fixture’s support/pressing points have both a width and height of 50 mm, and their R5 radii are not hardened. The test‑adjustable span is 250 mm, with specimen positioning plates at both the front and rear; the overall length of the fixture body is 320 mm. Refer to GB/T 9341 and ISO 178:2003.
Optional connector (customizable)	A‑axis coupling, outer diameter 20 mm, length 30 mm (with lock nut); pin hole diameter 10 mm; distance from the pin hole to the shaft end face 14.5 mm. B‑hole connector: inner bore 20 mm, depth 30 mm; pin hole diameter 10 mm, with the center of the pin hole located 14.5 mm from the end face of the connector.
Remarks	When no adapter is available, the fixture itself is equipped with an M12 internal thread.

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

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

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

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.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

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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.”

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

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“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.”

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.”

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