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LBT-GW40 Fully Automatic Rebar Reverse and Forward Bending Testing Machine

The fully automatic rebar bending testing machine is primarily used to perform 180°, 90°, and 20° bending tests on plain round bars, ribbed bars, straight bars, and coiled bars, enabling observation of crack formation and assessment of the bending ductility of steel and other metallic materials, as well as their bending performance after aging.

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Steel Structure Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LBT-GW40 Fully Automatic Rebar Reverse and Forward Bending Testing Machine

Description

Product Introduction:

Applicable standards;

GB/T 232 “Method for Bend Test of Metallic Materials”

GB 1499.1 “Steel for Reinforced Concrete — Part 1: Hot-Rolled Plain Round Bars”

GB 1499.2 “Steel for Reinforced Concrete — Part 2: Hot-Rolled Ribbed Steel Bars”

JGJ/T 27 “Standard for Test Methods of Steel Reinforcement Welded Joints”

Product Features:

This machine features a horizontal configuration, with the main hydraulic loading cylinder mounted on the left and the auxiliary cylinder on the right. It is equipped with a high‑rigidity load‑bearing frame and a stainless‑steel worktable, ensuring excellent stability. Hydraulic loading is employed, with the loading system controlled by supply and return valves and a dual‑control, bi‑directional hydraulic cylinder, enabling rapid testing, swift return, and real‑time digital display. The bending angle ranges from 0° to 180°, with real‑time monitoring throughout the test. The machine can perform automated forward and reverse bending tests; once the desired angle is set, it automatically completes the forward bend and then initiates the reverse bend. Protective devices are installed to ensure the safety of both personnel and equipment.

Technical Specifications:

Parameter item	Specific content
Left cylinder piston stroke	500mm
Right cylinder piston stroke	400mm
Lateral loading speed	1–160 mm/min; standard speed (1 ± 0.2) mm/s
Reinforcement bending angle	180° (adjustable from 0° to 180°)
Displacement resolution	0.01mm
Support shaft spacing/span	Adjustable from 0 to 500 mm
Support shaft dimensions (Φ×L)	Φ100*100mm
Test bench height	900mm
Control method	Touch-activated automatic control
Loading method	Dual-cylinder fully automatic
Power supply voltage	AC 380 V ±10%, 50 Hz (must be reliably grounded)
Power	2.2KW
Voltage	380V three-phase four-wire
External dimensions	1900x1100x1200mm
Weight	1100kg

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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

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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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Keywords:

LBT-GW40 Fully Automatic Rebar Reverse and Forward Bending Testing Machine

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Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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