Application Scope: Used for flexible connections between the upper end of the standpipe and the top drive/rotary device, as well as between the pump and the lower end of the standpipe during drilling, cementing, and workover operations. It is designed to pump mud at high pressure in oil drilling and exploration work.
Executive Standards: API Spec 7K / ISO 6807 / GB/T 24145

Hose Structure 
Inner Layer: Synthetic Rubber
Reinforcement Layer: Multi-layer Wrapped High-Strength Steel Wire
Outer Rubber Layer: Wear-Resistant and Weather-Resistant Synthetic Rubber
Temperature Range: -20°C ~ +121°C (-4°F ~ +250°F)
Joint Type: Integral Union, Integral Flange, or Other Types
Customizable equal-diameter hose inner layers

PRESSURE LEVEL Psi	I.D. in	O.D. mm	W.P. Psi	P.P. Psi	Min.B.P. Psi	Min.B.R. mm	W.T kg/m
5000 D级Grade D	2	74	5000	7500	12500	800	6.2
	21/2	88	5000	7500	12500	800	8.6
	3	103	5000	7500	12500	1000	11.1
	3 1/2	120	5000	7500	12500	1200	14.4
	4	132	5000	7500	12500	1200	15.7
	5	162	5000	7500	12500	1400	24.3
	6	197	5000	7500	12500	1600	33.3
7500 E级Grade E	2	76	7500	11250	18750	1000	8.4
	2 1/2	94	7500	11250	18750	1000	10.5
	3	110	7500	11250	18750	1200	18.5
	3 1/2	126	7500	11250	18750	1300	19.6
	4	148	7500	11250	18750	1400	29.4
	5	181	7500	11250	18750	1600	48.2
	6	216	7500	11250	18750	1800	60.6