Mine and Tunnel Roof Support Systems

Sliding Arched Canopy

Satrise Industry has developed procedures and products for specialized mining support of caved areas and unsupported roof. The Sliding Arch Canopy System provides support and a safe work environment as you clean up roof falls or advance through broken strata. Once in place they can be cushioned using Satrise Geotek Bags filled with rock dust or other material. Contact Satrise to discuss your application.

Steel Arch Supports
Structural steel arch supports and circular ring sets are used for mining roof support or ground control where severe conditions are anticipated or to maintain critical areas of a mine or tunnel where roof bolting or cribbing is not sufficient or practical. Used in conjunction with Satrise Lagging systems, arches can solve difficult conditions on a long-term basis.

Steel arch supports range from almost rectangular shapes, to semi-circles, to Gothic shaped structures. Each has design advantages and disadvantages depending on the application.

Some of the standard configurations are shown to the figure, however the best approach is to determine your specific needs and layout a support around your specific criteria. We take into consideration your requirements as far as clearances, load capacity, handling, and other site specific issues and provide an arch to best fit your needs.

China’s Steel Rails Classification

In China, according to the weight of per meter, steel rails are divided into crane rail, heavy rail and light rail in three ways:

1) Crane rails including QU120, QU100, QU80, QU70 of four, its material is generally manganese steel, the largest single weight is QU120 up to 118kg / m.

2) Heavy rail. According to the steel grades, it is divided into: general manganese rail, copper carbon steel rail, steel rail of high silicon copper, copper rails, rail manganese, silicon rail and so on. There are 38, 43 and 50kg three types. Besides, there are also a small number of 45kg for the rail line, it has been planned on the large volume and high speed rail lines with the 60kg. GB2585- 81 sets out of 38 ~ 50kg / m rail technical conditions, the size and code, such as shown in Table 6-7-10.

3) Light rail, including 8kg/m,9kg/m,12kg/m,15kg/m,22kg/m,24kg/m,30kg/m

In 2007, China promulgated a new standard GB 2585-2007, in addition to 38 ~ 50kg / m, the new increase of 60kg / m heavy rail and 75kg / m of heavy machinery rail.

About Satrise Mining Rail:

Satrise can provide any kinds of high quality rail
light rail : 8kg/m,9kg/m,12kg/m,15kg/m,22kg/m,24kg/m,30kg/m
heavy rail: 43kg/m,50kg/m 60kg/m
crane rail: QU70,QU80, QU100,QU120,
Rail length are avalilble with 6m,8m,9m,12m,12.5m,18m,25m

Types of Steel Rails

The type of steel rail is named by the weight of per meter steel rail in kilograms. Steel Rails used in China include 75kg / m, 60kg / m, 50kg / m, 43kg / m and 38kg / m and so on.

The cross section shape of the track rails adopts H-shape cross section, which has the best bending performance. And it consists of the rail head, rail web and rail foot three parts. To enable the rail to better support forces from all aspects, to ensure the necessary strength conditions, rail should be in sufficient height, the head and the bottom should be in sufficient size and height, waist and bottom should not be too thin.

Among these types of steel rails, 38kg / m rail now ceased production, 60kg / m, 50kg / m railway rails are laid on the main trunk line, station and dedicated lines are generally laid with 43kg / m rail. For heavy rail and particularly busy railway sector, it laid with 75kg / m rail.

In addition, in order to meet the needs of turnout, large bridge and seamless lines and other structures, China railway railway also uses special section (with the axis of asymmetric-shaped) rail. Now the rail with short special sections, AT rails short, are used more,

Any question or demand about steel rails please feel free to contact us:

Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

Steel Rails Applications

Steel rail is the main component of the railway track, directly bear repetition and impact loads of rolling stock wheels. Therefore, rail steel requires adequate hardness, tensile strength, fatigue strength and toughness.

There are many different types of rails. According to its cross-sectional shape, it can be divided into rails of flat, two-headed, Minotaur, trenches, stepped and bridge. According to its applications, except railway rails, there are crane rails, tram rails, forests and mining rail, elevator guide rails, tunnels and coastal wear and corrosion resistant composite rail and high-manganese steel rails for turnout Wait.

Since 1962, France, the United States, Japan and other countries have adopted basic oxygen furnace smelting steel rail. China uses open-hearth and basic oxygen furnace smelting. General need rail rolling after slow cooling to eliminate white spots. To shorten the process, vacuum degassing and other processes can also be used, thereby eliminating the slow cooling.

Any question about steel rail please feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

The development of steel rail

Each country railway rail in the early 20th century can weigh no more than 50kg / m, mostly used current national 60kg / m above the steel rail. The most important use of the US rail weight 77kg / m, the Soviet Union was 75kg / m. Improve the use of heavy rail is an economical rail service life and effective means. For greater than 30 million tons of shipping, the maximum driving speed greater than 120km / h for heavy rail, the rail by the 50kg / m change of 60kg / m, although steel consumption increased by 18%, but the traffic increase by 50% life can be extended by 70%. States under specific conditions using different methods to improve the wear and pressure ulcer steel, fatigue fracture properties. The Soviet Union, the United States, Japan and other countries mainly on the basis of the original carbon-manganese steel rail end and a total length of rail surface hardening and hardening heat treatment methods to tap potential. Full length hardened rail service life increased by 2 to 3 times as much carbon rails. Some Western European countries have adopted the alloying. Such as the Federal Republic of Germany with a Cr-V rails (C0.55 ~ 0.75%, Mn0.8 ~ 1.3%, Cr0.8 ~ 1.3%, V≤0.3%), the UK rail Mn-Cr (C0.15%, Mn1. 25%, Cr1.15%). From 1965, China began to produce low alloy rail with copper (Cu0.2 ~ 0.4%) of the rail, manganese (1.1 to 1.5%) of the rail and the like. Manganese rails abrasion better life increased by 2 times as much carbon rails.

We not only supply all kinds of heavy steel crane rail, also provide rail parts and accessories including joint connection parts and intermediate coupling parts. For example Timber Sleepers, spikes, rail pads, tie plates, gauge rods - with single or double jaw, spring, Fish Plates, joint bars, bolts, spring, washer.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

The Classification of Steel Rail

Steel Rail is generally divided into three levels according to the tensile strength, that is, the general standard rail (tensile strength of 70 - 85 kgf/mm2), wear-level rail (tensile strength of 90 - 105kgf / mm2) and extra rail (tensile strength 110 - 125kgf / mm2). 

The chemical composition of the steel rail, strength and elongation must meet the standard requirements, in addition to be hammer, metallurgical, low times, check hardness testing and surface quality and dimensional deviations. The world's first rail is manufactured with a carbon content of 0.3 to 0.4% carbon steel. Carbon rail States currently still widely used, but the steel carbon content gradually increase (C0.5 - 0.8%). In some steel manganese content also increased (Mn0.6 - 1.0%). China's heavy rail steel standard component: C0.67 - 0.80%, Si0.13 - 0.28%, Mn0.7 - 1.0%, P≤0.04%, S≤0.05%, with the rolling stock axle load, vehicle speed and increase in traffic in improving rail weight per unit length, developed alloy rails, improve rail production technology and product quality has also continued to make progress.

steel rail for sale

We not only supply all kinds of heavy steel crane rail, also provide rail parts and accessories including joint connection parts and intermediate coupling parts. For example Timber Sleepers, spikes, rail pads, tie plates, gauge rods - with single or double jaw, spring, Fish Plates, joint bars, bolts, spring, washer.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

Connectors: Rail Joint Bars for sale

Joint bars and bolts are used to fasten rails together. Tie plates and spikes attach rails and ties to produce track. Compromise bars join rails of unequal size.

Joint Bars

Illustrated are the three types of standard joint bars which are currently in service. Six-hole joint bars are provided for all crane rail and new tee rail sections over 100-lb. per yard. New rail 100-lb. per yard and less is furnished with four-hole joint bars. All relay rail is supplied with matching joint bars.

Compromise Joints

Heat-treated compromise joints are used to connect and align rails of unequal size and drilling. A standard bar is re-formed by a custom forging process in both the vertical and horizontal planes so that the gage and running surfaces of the joined rails are in true alignment.
Satrise Industry can also supply compromise weld joint kits or shop-fabricated transition rail joints as suitable alternates to the standard joint.

Tie Plates

Tie plates fasten the rail to the tie and maintain gage and alignment of rails in track. New double shoulder tie plates are available for 5-1/2" and 6" base rail and are manufactured according to AREA specifications. Used double shoulder tie plates can be supplied to fit most rail bases. New single shoulder tie plates are no longer available, but they can be furnished as used and will fit any rail section.

Bolts

Crane rail bolts are medium carbon, heat treated per ASTM specification A-325 and are shipped complete with heavy hex nuts and lockwashers. Tee rail requires standard button-head oval-neck track bolts with heavy square or hex nuts. Lockwashers are furnished on request.

Spikes
Track spikes are produced from hot rolled steel bars and are shipped in 200-lb. kegs. Satrise Industry also maintains a complete inventory of screw spikes, drive spikes and boat spikes.

Contact us:

Email: admin@satrise.com
Tel: +86-17093757606
www.srrail.com