cotton cloth-based tubes

The tubes constructional represent items of round section made by winding on metal swages of a cotton fabric, impregnated thermosetting resin with the subsequent molding in express moulds. Permissible temperature from -60 up to 105 ЁС is long-term.

Conformity to standards

ТU 16-503.088-77

DIN 7735

Нgw 2089

Technical Characteristics

			cotton cloth-based tubes
Parameters	Test conditions	Guaranteed values	Typical values
Density, kg/m3		1250-1400	1250-1400
breaking stress at breakage in radial direction 7,05x15,5 mm ,MPa		20	20
breaking stress at alongation (axially), MPa		100	100
breaking stress at compression (axially), MPa 7,05x15,5 mm		190	190
tubes of otger dimentions		160	160
Heat shock stability within 24 h		120	120
Transformer oil resistance	105 С	4	4
Water absorbtion, mg		429	429

Application

The tubes are applied as a constructional material