API Spec7-1 P550 Non Magnetic Drill Collar for Oilfield

• Transport Package: Wood Box
• Origin: Puyang Henan
• Production Capacity: 1000

Product Description

Description:
    The non magnetic drill collar is made of alloy steel with low magnetic permeability, and its chemical composition is strictly controlled and forged. The material has been tested to ensure that its hardness, toughness, impact value, and corrosion resistance meet the standards, and has good low magnetic permeability and good mechanical processing performance. Non magnetic drill collars shall comply with API 7-1 and API 7-2 standards.
  

Technical parameters of drilling collar: 
 

According to API Spec 7-1 Specifications
Model	External Diameter		Internal Diameter		Length (m)	Chamfering Diameter (mm)	Reference Flexural Strength Rate
	mm	in	mm	in
NC23-31	79.4	3 1/8	31.8	1 1/4	9140	76.2	2.57 : 1
NC26-35	88.9	3 1/2	38.1	1 1/2	9140	82.9	2.42 : 1
NC31-41	104.8	4 1/8	50.8	2	9140 / 9450	100.4	2.43 : 1
NC35-47	120.6	4 3/4	50.8	2	9140 / 9450	114.7	2.58 : 1
NC38-50	127.0	5	57.2	2 1/4	9140 / 9450	121.0	2.38 : 1
NC44-60	152.4	6	57.2	2 1/4	9140 / 9450	144.5	2.49 : 1
NC44-60	152.4	6	71.4	2 13/16	9140 / 9450	144.5	2.84 : 1
NC44-62	158.8	6 1/4	57.2	2 1/4	9140 / 9450	149.2	2.91 : 1
NC46-62	158.8	6 1/4	71.4	2 13/16	9140 / 9450	150.0	2.63 : 1
NC46-65	165.1	6 1/2	57.2	2 1/4	9140 / 9450	154.8	2.76 : 1
NC46-65	165.1	6 1/2	71.4	2 13/16	9140 / 9450	154.8	3.05 : 1
NC46-67	171.5	6 3/4	57.2	2 1/4	9140 / 9450	159.5	3.18 : 1
NC50-70	171.5	6 3/4	71.4	2 13/16	9140 / 9450	159.5	2.37 : 1
NC50-70	177.8	7	57.2	2 1/4	9140 / 9450	164.7	2.54 : 1
NC50-70	177.8	7	71.4	2 13/16	9140 / 9450	164.7	2.73 : 1
NC50-72	184.2	7 1/4	71.4	2 13/16	9140 / 9450	169.5	3.12 : 1
NC56-77	196.8	7 3/4	71.4	2 13/16	9140 / 9450	185.3	2.70 : 1
NC56-80	203.2	8	71.4	2 13/16	9140 / 9450	190.1	3.02 : 1
6 5/8 REG	209.6	8 1/4	71.4	2 13/16	9140 / 9450	195.6	2.93 : 1
NC61-90	228.6	9	71.4	2 13/16	9140 / 9450	212.7	3.17 : 1
7 5/8 REG	241.3	9 1/2	76.2	3	9140 / 9450	223.8	2.81 : 1
NC70-97	247.6	9 3/4	76.2	3	9140 / 9450	232.6	2.57 : 1
NC70-100	254.0	10	76.2	3	9140 / 9450	237.3	2.81 : 1
8 5/8 REG	279.4	11	76.2	3	9140 / 9450	266.7	2.84 : 1