Five grade of rotary drilling hoses

Released on Oct. 27, 2022

Rotary drilling hoses are composed of three parts:

Inner tube: made from high quality NBR synthetic rubber which has excellent resistance to abrasion, corrosion and oil;

Reinforcement layer: made of four or six layer of high tensile steel wire wounded, makes the drilling hose resistant to high pressure;

Cover layer: made of high quality synthetic rubber, makes the hose and steel wire away from damage;

And the rotary drilling hose have five different grades:

Grade A rotary drilling hose

Inside Diameter (ID)			Outside Diameter (OD)	Max Working Pressure		Min Burst Pressure		Bend Radius	Weight
DN	inch	mm	mm	bar	Psi	bar	psi	mm	Kg/mt
-24	1-1/2"	38.1	51	103	1500	207	3000	560	2.19
-32	2"	50.8	65	103	1500	207	3000	900	3.03
-40	2-1/2"	63.5	78	103	1500	207	3000	1200	3.95

Grade B rotary drilling hose

Inside Diameter (ID)			Outside Diameter (OD)	Max Working Pressure		Min Burst Pressure		Bend Radius	Weight
DN	inch	mm	mm	bar	Psi	bar	psi	mm	Kg/mt
-24	1-1/2"	38.1	51	138	2000	276	4000	560	2.39
-32	2 "	50.8	65	138	2000	276	4000	900	3.25
-40	2-1/2"	63.5	78	138	2000	276	4000	1200	4.37
-48	3"	76.2	98	138	2000	276	4000	1200	7.76
-56	3-1/2"	88.9	113	138	2000	276	4000	1300	9.95
-64	4"	101.6	127	138	2000	276	4000	1400	12.43
-80	5"	127	153	138	2000	276	4000	1500	15.25

Grade C rotary drilling hose

Inside Diameter (ID)			Outside Diameter (OD)	Max Working Pressure		Min Burst Pressure		Bend Radius	Weight
DN	inch	mm	mm	bar	Psi	bar	psi	mm	Kg/mt
-24	1-1/2"	38.1	55	276	4000	552	8000	560	3.65
-32	2"	50.8	69	276	4000	552	8000	900	5.15
-40	2-1/2"	63.5	88	276	4000	552	8000	1200	7.86
-48	3"	76.2	105	276	4000	552	8000	1200	13.12
-56	3-1/2"	88.9	121	276	4000	552	8000	1300	16.79
-64	4"	101.6	137	276	4000	552	8000	1400	21.7
-80	5"	127	164	276	4000	552	8000	1500	28.46

Grade D rotary drilling hose

Inside Diameter (ID)			Outside Diameter (OD)	Max Working Pressure		Min Burst Pressure		Bend Radius	Weight
DN	inch	mm	mm	bar	Psi	bar	psi	mm	Kg/mt
-32	2"	50.8	73	345	5000	690	10000	900	6.46
-40	2-1/2"	63.5	91	345	5000	690	10000	1200	10.75
-48	3"	76.2	107	345	5000	690	10000	1200	14.35
-56	3-1/2"	88.9	123	345	5000	690	10000	1300	18.77
-64	4"	101.6	139	345	5000	690	10000	1400	23.16
-80	5"	127	171	345	5000	690	10000	1500	38

Grade E rotary drilling hose

Inside Diameter (ID)			Outside Diameter (OD)	Max Working Pressure		Min Burst Pressure		Bend Radius	Weight
DN	inch	mm	mm	bar	Psi	bar	psi	mm	Kg/mt
-32	2"	50.8	80	517	7500	1034	15000	1000	10.37
-40	2-1/2"	63.5	101	517	7500	1034	15000	1200	17.88
-48	3"	76.2	120	517	7500	1034	15000	1200	24.45
-56	3-1/2"	88.9	135	517	7500	1034	15000	1300	29.33
-64	4"	101.6	148	517	7500	1034	15000	1400	34.24
-80	5"	127	189	517	7500	1034	15000	1500	55.39

The above is the five grades of rotary drilling hose, when you contact us, please provide your detail requirement, That will help us give you a valid quotation.

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