1. Outer diameter (mm): Φ33, Φ40, Φ43, Φ47 (±0.5);

2, length (mm): 1200, 1500, 1800, 2000, 2500

3. Material: Q235, 16Mn, 20 Mnsi.

Functions

Friction bolt (Split sets) is a frictional ground support system.When friction bolt is inserted into drilling hole with smaller diameter,
the slot partially closes and bolt diameter is compressed, which creates radical forces on rock roof surface along the whole length and firmly holds the rock.

山东义捷机械设备有限公司是矿山企业非常认可的岩层控制产品供应商。义捷生产的预应力锚杆安全可靠，有适应不同地质采矿条件承载力100KN-395KN系列锚杆。

The roof mat is a new kind of mine support material. It is made of steel sheet with a thickness of 3-5 mm and a width of 180-320 mm. After cold bending into a W-shape, a steel strip with the same bolt hole as the anchor rod is processed in the middle of the roof mat.

山东义捷机械设备有限公司是矿山企业非常认可的岩层控制产品供应商。义捷生产的预应力锚杆安全可靠，有适应不同地质采矿条件承载力100KN-395KN系列锚杆。

In most cases, TITANEX bolts are designed for temporary support for 2-3 years. So no special surface treatment is needed. However, when a longer service life is required, the zinc-galvanized steel pipe is selected because it has a rust-preventing ability comparable to that of stainless steel, and is less expensive.

锚杆是当代煤矿当中巷道支护的最基本的组成部分，他将巷道的围岩加固在一起，使围岩自身支护自身。现在锚杆不仅用于矿山，也用于工程技术中，对边坡，隧道，坝体进行主体加固。锚杆作为深入地层的受拉构件，它一端与工程构筑物连接，另一端深入地层中，整根锚杆分为自由段和锚固段，自由段是指将锚杆头处的拉力传至锚固体的区域，其功能是对锚杆施加预应力。

Swellex 锚杆 rockbolt rockbolts Swellex 可扩张岩栓的一系列附件，以满足各种应用需要。最常见的构件有 Swellex 钢板、啮合垫圈和彩色塞子以及用于测试 Swellex 可扩张岩栓系统的拉力试验设备。
功能和特点

水胀式锚杆是一种由外径大于锚孔孔径的无缝钢管加工制作成的双层凹形管状杆体。
水胀式锚杆又称水力膨胀锚杆，它由端套、挡圈、注液端、托盘等配件构成，把该钢管放入锚杆孔后用高压水使其膨胀，在膨胀过程中，水胀式锚杆产生永久变形，锚杆管壁与锚杆孔的不规则孔壁完全贴合，由于沿整个锚杆全长产生了摩擦力和自锁力，从而加固了岩体。