T40 Self Drilling Hollow Anchor Bar 40mm 3m 4m 40Cr 660KN

T40 Self drilling anchor bolt / Self drilling anchor bar / hollow anchor bar

Product Description

Hollow grouting bolt is mainly used in advance support, radial support, slope reinforcement, roadbed reinforcement, roadway support and tunnel disease control engineering.

With the development of transportation, energy, water conservancy, construction, mining and other infrastructure construction, the anchorage technology which can give full play to the self-stability of rock mass has been developed rapidly in tunnels, basements and slopes. Bolting is an economical and effective method to improve the stability of geotechnical engineering.

Hollow grouting bolt system can ensure full grouting between bolt body and hole wall and give full play to the anchoring effect of bolt. It can provide support force immediately after rock mass excavation, effectively protect the inherent strength of rock mass, prevent the loosening of surrounding rock and reduce deformation, and enhance the stability of geotechnical engineering. The rod body is coated with sufficient slurry, greatly improving corrosion resistance and showing good durability.

Hollow grouting bolt for coal mine is composed of hollow bolt body, anchor head, grouting stopper, backing plate, nut and connecting sleeve (optional).

1. Anchor head of hollow grouting bolt: the barb on the anchor head can position the bolt in the drilled hole, and the hollow grouting bolt can ensure that the bolt body is well centered.

2. Hollow grouting bolt bolt body: the most important construction in the assembly, which plays a major role in anchoring and supporting.

3, stop grouting plug: in the process of grouting to maintain the grouting pressure, so that the slurry is fully filled into the surrounding rock gap.

4, backing plate: bear greater surrounding rock stress.

5, nut: the surrounding rock stress concentration to the plate

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packing details:

Application:

FAQ:

Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi Silaishi Special Steel Co.,Ltd is a manufacturer of steel pipe and tube since 2010. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.

Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded pipes can also be available

Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.

Q4. CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings that will be most satisfy you.

About us

Over the years, we have worked hard to promote and realize the modernization of seamless steel pipes' sales, and actively cultivated and enhanced the ability of employees' independent innovation. All-round renovation and upgrade of the original business site, facilities and equipment, and modern computer management. Hope to establish long-term partnerships and win market reputation.