The engineering method - hollow steel bar for civil work

The construction of is a kind of secret engineering method and the anchoring quality of conventional hollow bar is mainly controlled by design,installation,tentative and inspection and so on.

The test is about the quality of material of hollow steel bar and the tension force of hollow bar.Sometimes the inspection rate of qualified
hollow steel bar is often only 1%-3%.According to the recent study of authority,which shows that the bond length of anchor bolt is up to 42
times longer than the diameter of hollow bar,and this is the maximum number that the common hollow bar can reach.

As a result,the installation conditions of hollow steel bar can not be completely and objectively reflected by a single tension test
especially about the density of hollow steel bar.

With the wide utilization of hollow steel bar in construction,the tension test of hollow steel bar is obviously can not meet the demands in
the supporting project of mine,tunnel,slope,foundation,wharf,railway station and other engineering constructions.

In accordance with the regulations,the length of hollow bar should be designed as required and the denseness of hollow bar should not be less
than 75%.

The Sinorock hollow steel bar system is designed for use in various applications, including tunnel repair and refurbishment and also slope and cliff face reinforcement. It provides the optimal solution for nailing, bolting, micro piling and as ground anchors for use in difficult ground and rock conditions. The system comprises of high quality fittings matched to rope threaded seamless steel tube which is threaded to ISO 2008.The self drilling anchor bolt system enables drilling and grouting of the anchor in one operation, making a saving in on-site and project time.

Sinorock hollow steel bar systems effectively improve the stability of underground rock masses. The increased load bearing capacity of the rock conditions enables an early construction start, thus providing both technical and economic advantages.Thanks to our systems’ flexible application options, our customers can choose next to mechanical and chemical anchors and bolts from a variety of anchoring systems, which are all customtailored to satisfy individual project requirements.


If you have any question,please don't feel hesitate to contact us at any time,we are appreciate for your nice gesture very much!

Other supplier products

	Making you know the anchor bolts of Sinorock	have many uses and because there are so versatile there are many different structures and machinery that use them. A majority of the people in the...
	Specialized in exporting self drilling ground anchor - Sinorock	Specialized in exporting with SGS&CE. Sinorock is one of the leaders amongst manufacturers and exporters of high quality self drilling ground ...
	Sinorock has occupies a strong position in the anchor bolts market	Since 2011,Sinorock has occupies a strong position in the market, We offer a wide variety of anchor bolts which can be utilized for various applica...
	Self drilling bolt is the most widely used supporting method in the world recent years	is the most widely used supporting method in the world recent years. It overcomes the disadvantages of common anchor bolts, combines drilling, gro...
	Sinorock develops, produces and supplies high quality systems such as rock bolt Systems	The needs and requirements of clients and business partners are always of paramount importance. Characterized by reliability, trust and cooperation...

Same products

	sewing spares	Seller: Zhejiang Huaqi Information Technology Co., LTD	Manufacturers also need to consider the quality of sewing spares when making their purchasing dec...
	industrial sewing machine spares	Seller: Zhejiang Huaqi Information Technology Co., LTD	Our spares are crafted from the highest quality materials to withstand the rigors of industrial u...
	industrial sewing machine spares	Seller: Zhejiang Huaqi Information Technology Co., LTD	At JINZEN, we take immense pride in our diverse and comprehensive product range, catering to ever...
	Qinggong QDS-9C Oil Bath High Speed Bag Sewing Machine	Seller: Hebei Qinggong sewing machine Co., Ltd	DS-9C Single needle sewing machine for sewing paper bags, cloth bags, plastic woven bags, sacks ...
	TOURIST INFORMATION KIOSK MANUFACTURER	Seller: Shenzhen Hongjiali Information Technology Co., Ltd.	You can create a virtual visitor's map location anywhere. In HJL China information kiosk factory,...