expansion hose

made in china good quality synthetic rubber heavy duty series

specifications:(1) ISO 9001

 GB/T3683-92MT98-84

             (2) safety certification of approval for mining products

             (3) professional manufacture.

             (4) high quality and inexpensive.

Structure: rubber injection sealing empty device by inside fillet, enhance layer, middle layer, spirallayerand ext-ernal composition.

Features: rubber injection sealing empty apparatus in bear internal positive pressure,  body length changes shorter, diameter achieve expansion state to achive the hole sealing function.

Purposes: A used in coal mine coal dust and gas emissions extinction.

        B used in engineering building underground anti-seepage construction.

        C used in tunnel and underground and underwater mining for water.

        Dused in water conservancy underground exploration.

Size	I.D	Tolerance	O.D	Tolerance	Expansion O.D	Tolerance	Min.burst pressure
	mm		mm		mm		Mpa
2.20E+71	22	0.5	39	2	70	6	30
2.50E+81	25	0.5	41	2	80	6	28
3.20E+91	32	0.5	48	2	90	6	26
3.80E+91	38	0.5	54	2	90	6	20
4.50E+91	45	0.5	60	2	90	6	18
5.10E+91	51	0.5	69	2	100	6	16