made according to API Spec. 7K standard, applies for flexible hose connection between the top of oil drilling stand pipe and vertical moved swivel joint in well drilling, well cementing, work-over and down hole servicing operation, and also for adjusting the installation mistake between drilling pipe line and stand pipe to avoid shake.

It also applies for high pressure oil or water base mud with the lowest aniline point of 60 from the swivel pipe in high pressure, and down-hole operation high medium such as water, oil and mud etc..

A, B, C Rank Well Drilling Rotary Hose Specification and Basic Parameters

I.D.		O.D.	Rank	Working Pressure		Test Pressure		Min. Bending Radius	Reference Weight	Hose Max. Length	Connection
mm	in	mm		MPa	PSi	MPa	PSi
51	2	68.6	A	11	1500	21	3000	800	3.17	30M	TBGLP
51	2	69	B	14	2000	28	4000	800	3.49	30M
51	2	74.4	C	28	4000	56	8000	850	5.96	30M
63.5	2-1/2	81.9	A	11	1500	21	3000	900	4.23	30M	TBGLP
63.5	2-1/2	82.3	B	14	2000	28	4000	900	4.54	30M
63.5	2-1/2	87.7	C	28	4000	56	8000	1000	7.26	30M
76	3	95.2	A	11	1500	21	3000	950	7.92	30M	TBGLP
76	3	100.1	B	14	2000	28	4000	950	8.49	30M
76	3	108.8	C	28	4000	56	8000	1050	14.66	30M
89	3-1/2	117.3	A	11	1500	21	3000	1000	7.30	30M	TBGLP
89	3-1/2	119.5	B	14	2000	28	4000	1000	7.90	30M
89	3-1/2	122.8	C	28	4000	56	8000	1100	17.44	30M
102	4	128.4	A	11	1500	21	3000	1050	9.55	30M	TBGLP
102	4	138.8	B	14	2000	28	4000	1050	11.61	30M
102	4	147.4	C	28	4000	56	8000	1100	21.95	30M
127	5	150.0	A	11	1500	21	3000	1200	10.10	30M	TBGLP
127	5	154.1	B	14	2000	28	4000	1200	12.25	30M
127	5	163.0	C	28	4000	56	8000	1300	24.20	30M
152	6	180.0	A	11	1500	21	3000	1300	28.20	30M	TBGLP
152	6	185.0	B	14	2000	28	4000	1300	30.80	30M
152	6	196.0	C	28	4000	56	8000	1400	44.40	30M