Air, Pneumatic, Rock Drill Hoses

Air, Pneumatic, Rock Drill Hoses

Specifications

IS : 446/1980 (Amalgamated revision of IS : 446/ 1968 covering both textile woven and braided construction) or IS 911.

IS 446/87 - TYPE I II & III

Construction

Air Hoses, Pneumatic Hoses
Lining : Rubber lining shall be porosity, air-blisters and any other visible defects
Rock Drill Hoses
Lining : Rubber lining shall be free from resistant to oil mist.
Reinforcement : Shall be either woven fabric well rubberized on both sides or braided textile reinforcement with yarn, natural or synthetic or combination of both
Cover : The outer cover shall be of high tensile abrasion resistant compound

Availability of Sizes & Reinforcement Recommendation

I.D. mm
 
Type I
Wov.
Br.
Type II
Wov.
Br.
Type III
Wov.
Br.
5.0
2 Ply
1 Br.
2 Ply
1 Br.
3 Ply
1 Br.
6.3
2
1
2
1
3
1
8.0
2
1
3
1
3
1
10.0
2
1
3
1
4
1
12.5
2
1
3
2
4
2
16.0
2
1
3
2
4
2
20.0
3
1
4
2
5
2
25.0
4
2
5
2
6
3
31.5
4
2
5
3
6
3
38.0
4
2
5
3
7
3
50.0
-
-
6
3
-
-

50 mm & above sizes in Type I, II, III are supplied as per request.

Types

There are 3 types of hoses

  • TYPE I :Air hoses for a working pressure 7 Kgf/cm2
  • TYPE II :Pneumatic Air hoses for a working pressure 10 Kgf/cm2
  • TYPE III :Rock Drill hoses for a working pressure of 14 Kgf/cm2

Test

The hoses will undergo hydraulic test as per following,

  • TYPE I :Air Hoses, Minimum bursting pressure 28 Kgf/cm2
  • TYPE II :Pnuematic Tool Hoses : Minimum bursting pressure 40 Kgf/cm2
  • TYPE III :Rock Drill Hoses : Minimum bursting pressure of 56 Kgf/cm2

Applications

Air, Pneumatic, Rock Drill Hoses are used for various applications like general construction work, road building, tunneling, in construction jobs used with chipping, grinding and riveting appliances; in Service type inflation, for rock drilling applications in mine, and quaries etc.