A semi‑bubble type yielding tube

Name: A semi‑bubble type yielding tube
Brand: GLOBALMACHEX
Price: 1.00 USD
Availability: InStock
Rating: 5 (1 reviews)

A semi‑bubble yield tube is a mechanical constant‑resistance yield device for rock bolts, mounted between the nut and plate. Its double‑stage bulges deform in a controlled manner to provide staged yielding, enabling accurate management of pre‑tension and ground pressure. Ideal for high‑stress and large‑deformation roadways, it safeguards the bolt against overload failure.

$1.00 - 5.00

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Shandong Shengyuan Industrial Equipment Co., Ltd.

Main Products: New support products, lithium battery monorail hoist, mining support equipment, hydraulic power machinery and components, alloy castings, valves, hydraulic motor

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Year Established Established in 1997

Main Products New support products, lithium battery monorail hoist, mining support equipment, hydraulic power machinery and components, alloy castings, valves, hydraulic motor

Employees 101-500 People

Factory Area > 50,000 m²

Annual Revenue Above US$50 Million

Main Markets Southeast Asia / Middle East & North Africa

Details

Specifications

Trade Information

Product Advantages

1. Visual Pre‑Tension Control

Flattening of the upper bubble indicates that the 6‑tonne pre‑tension target has been achieved, identifiable by the naked eye, enabling standardized construction.

2. Constant‑Resistance Yielding Protection

Rated yielding capacity of 18 tonnes, automatically releasing ground stress to prevent overload fracture of the rock bolt.

3. Reliable Structure and Strong Adaptability

One‑piece steel construction, easy to install without compromising construction efficiency.

4. Deformation Warning for Surrounding Rock

Deformation of the double bubbles provides intuitive feedback on ground pressure conditions, assisting in risk prediction.

Compatible With

Rock bolts / anchor cables

Material

High‑quality steel tube

MOQ

10000 Pieces

Lead Time

5 days

Supply Ability

10000 Pieces per Day

Shipping Port

qingdao/Khorgos

Trade Terms

FOB, CIF, EXW, CFR, DDP, DAP

Description

Product Advantages

1. Visual Pre‑Tension Control

Flattening of the upper bubble indicates that the 6‑tonne pre‑tension target has been achieved, identifiable by the naked eye, enabling standardized construction.