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Strong metal anchor bolt

Strong metal anchor bolt
Click:  Update:2016-12-12 10:21:02  【Print】  【Close

MSGLD series strong thread steel resin bolt metal rod body products are widely used in underground rock roadway, half coal rock drift and coal roadway bolt supporting, especially for downhole complicated conditions of tunnel and cavern support. The products and resin anchoring agent supporting the use of, its characteristics: 1, reasonable structure, bolt thread length and strength to solve the shortcomings of existed before processing rod threaded body strength loss; 2, intensity is greatly improved, after installation can not only timely under load, and anchoring force increases; 3, expand the range of use of the bolt, end anchor, a lengthened anchor and the anchor; 4, convenient installation and operation, low labor intensity of workers, supporting high rate; 5, tons of coal support cost greatly reduced.

 

Standard of relative technical standards for metal bar body with high strength screw thread steel

1, the shape size and allowable deviation (unit: mm)

Specifications

杆体内径D

Rod   diameter

Transverse   rib height

Transverse   rib spacing


Nominal size

Allow

Deviation

Nominal size

Allow

Deviation

Nominal size

Allow

Deviation

Nominal size

Allow

Deviation

Φ20

18.2

±0.4

22

0.4

-0.3

1.6

0.4

-0.3

12

-0.4

Φ22

20

±0.4

24

0.4

-0.3

1.6

0.4

-0.3

12

-0.4

 

2, mechanical properties

 

 

Brand number

Yield strengthMPa

Tensile strengthMPa

Elongation%

MG335

335

490

15