LBHY-36 Slip Resistance Coefficient Tester (New Standard)
Category:
Keywords:
E-mail:
WhatsApp:
Description
Product Introduction:
The slip‑resistance coefficient tester is primarily used to determine the slip‑resistance coefficient of high‑strength bolted connections featuring large hexagonal heads (M12, M16, M20, M22, M24, M27, M30, M33, M36) and torque‑shear type high‑strength bolts (M12, M16, M20, M22, M24, M27, M30, M33, M36) in conjunction with slip plates. It features four physical channels and six sets totaling 24 logical channels, with a force‑measurement range of 30–700 kN. The instrument includes parameter backup and restoration functions, and, in accordance with the testing requirements for high‑strength bolts, it also incorporates a peak‑hold function.
Reference standard:
“Code for Acceptance of Construction Quality of Steel Structures” GB/T 50205, “Technical Specification for High-Strength Bolted Connections in Steel Structures” JGJ 82, “Determination of the Coefficient of Friction Between Bolted Steel Plates” GB/T 34478
Working principle:
The working principle of the slip‑resistance coefficient tester is based on mechanical and tribological principles. During testing, the instrument secures the specimen on the test table using a fixture and applies a specified normal load and frictional force. By measuring either the specimen’s sliding displacement under friction or the magnitude of the frictional force, the slip‑resistance coefficient is calculated. Additionally, the instrument allows users to configure various test parameters and conditions as needed, enabling simulation of slip‑resistance performance under different operating scenarios.
Product Features:
(1) High-precision measurement: By employing advanced sensors and measurement technologies, it enables accurate determination of the friction coefficient on material or structural surfaces, with high measurement accuracy and minimal error.
(2) Multi-channel measurement: The instrument features multiple physical and logical channels, enabling simultaneous measurement of the skid resistance of several specimens and thereby enhancing testing efficiency.
(3) Automatic Recording and Storage: Equipped with the capability to automatically record and store test data, it can retain large volumes of data over extended periods, facilitating subsequent analysis and processing. The touch-screen controller features a built-in printer for on‑demand printouts.
(4) User-friendly operation: The instrument features a simple and intuitive user interface that is easy to operate and understand. Additionally, it includes parameter backup and restore functions, facilitating convenient management and maintenance for users.
(5) Compliance with Domestic and International Standards: The instrument’s design adheres to relevant domestic and international standards and specifications, ensuring the accuracy and reliability of test results.
Technical Specifications:
| Project | Parameter |
| Measurement range | 30 ~ 700 kN |
| Test force resolution | ±0.1 kN |
| Indication error of the test force | ≤±2.0% |
| Display mode | 7-inch touchscreen display |
| Host packaging weight | 45kg |
| Host dimensions | 590x410x1180mm |
| Accessory packaging weight | 38kg |
| Accessory packaging dimensions | 680x360x280mm |
| Power supply | 220V |
Specimens and Test Methods
1. Test Specimens: The test specimens shall be fabricated by the manufacturer and shall be made of the same material, produced in the same batch, subjected to the same friction‑surface treatment process, and exhibit identical surface conditions as the steel structural members they represent. They shall also be assembled using high‑strength bolted connections from the same batch and of the same performance grade, and stored under the same environmental conditions. The thicknesses t1 and t2 of the specimen steel plates shall be determined based on the representative plate thicknesses encountered in the steel structure project, while ensuring that, prior to slip at the friction interface, the net cross‑section of the specimen plates remains entirely within the elastic range. The width b may be selected in accordance with the values specified in Table 1. The length L1 shall be established according to the requirements of the universal testing machine’s grips. The surfaces of the specimen plates shall be flat, free of oil or grease, and the edges of both the holes and the plates shall be free of burrs or sharp edges.
Figure 1: Shape and dimensions of the slip-resistance coefficient splice component
Table 1: Width of Specimen Plate (mm)
| Bolt diameter d | 16 | 20 | 22 | 24 | 27 | 30 | |
| Board width b | 100 | 100 | 105 | 110 | 120 | 120 |
2. Test Method
First, drive the shear pins into the positioning holes of the test specimen, then replace them with high-strength bolted connections equipped with sensors or torsional‑shear high‑strength bolted connections. Connect the sensors to the control instrument according to their respective serial numbers; after zeroing the instrument, tighten the nuts as specified. Following final tightening of the high‑strength bolts, the pre‑tension of each sensor‑equipped bolt shall be within the range of 0.95P to 1.05P. When the sensor reading reaches the prescribed value, the control instrument will sound an alarm for approximately 4 seconds. For ease of observation, a straight line indicating slip should be marked on the side of the test specimen.
Place the assembled specimen on the tensile testing machine, ensuring that the specimen’s axis is precisely aligned with the center of the machine’s grips. When applying the load, first apply 10% of the design slip‑resistance load; after a 1‑minute hold, proceed to increase the load at a steady rate of 3–5 kN/s until slip occurs, at which point record the slip load. 
。
During the test, when any of the following conditions occurs, the corresponding load may be designated as the slip load of the specimen.
a) The testing machine exhibits a needle‑rebound phenomenon;
b) The scribed line on the specimen’s side has shifted;
c) The force value suddenly decreases;
d) The specimen suddenly emits a “snap” sound.
The slip resistance coefficient shall be determined based on the slip load measured in the test. 
The measured value of the bolt pretension P should be expressed to two decimal places.
Standard configuration:
| Serial number | Name | Unit | Quantity |
| 1 | Touchscreen Control Cabinet | Taiwan | 1 |
| 2 | M16 with sensor - 120 kN | only | 4 |
| 3 | M20 with sensor - 180 kN | only | 4 |
| 4 | M22 with sensor - 220 kN | only | 4 |
| 5 | M24 with sensor – 260 kN | only | 4 |
| 6 | M27 with sensor - 330 kN | only | 4 |
| 7 | M30 with sensor – 400 kN | only | 4 |
| 8 | M33 with sensor – 510 kN | only | 4 |
| 9 | M36 with sensor – 610 kN | only | 4 |
| 10 | Data cable | root | 4 |
| 11 | Adjustable wrench | set | 1 |
| 12 | Plum-blossom‑shaped high‑pressure nozzle sockets (27 mm, 34 mm, 36 mm, 41 mm, 46 mm, 50 mm) | one | One each |
| 13 | Certificate of Conformity | portion | 1 |
| 14 | Product Manual | portion | 1 |
Related Product
HC-40 Concrete Multi-functional Strength Tester
The HC-40 concrete multi-functional strength tester is a high-performance testing device integrating multiple advanced technologies, specifically designed for evaluating the strength and quality of concrete.
FAQs
Customer Reviews
European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester
2026.06.05
★★★★★
Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment
2026.06.05
★★★★★
Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine
2026.06.05
★★★★★
Consult
We will contact you within one working day. Please pay attention to your email.
Whether you want to customize product features
I still need some examples to refer to ——
Please let us know what you're looking for, and we'll send you relevant materials to help you move your project forward quickly!
Global Partners
Customer Satisfaction
Committed to becoming a leader in China's testing equipment manufacturing industry
Share To
Contact Us
Mobile:+86-15102211717
Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd
Address:Tianjin Jinghai Economic Development Zone