non magnetic spiral drill collar

slick drill collar:, 1.Meeting to API7-1, 2.OD:4 1/8"-11", 3.Length:5"-31" - details see: https://www.machineto.com/non-magnetic-spiral-drill-collar-10317594

Place of Origin:Henan China (Mainland)	Brand Name:ZZZX	Model Number:API Spec	Type:Drill Collar
Machine Type:Drilling Tool	Certification:API	Material:allloy steel,4145H alloy steel	Processing Type:Forging
Use:Well Drilling

1. The size 3-1/2” to 11” drill collar , spiral drill collar & short drill collar according to API Spec 7-1 standard we can manufacture.

2.The hear treatment technique is conducted in the range of full length of products.

3. The thread can be processed with cold roller according to the customer’s requirements. And also can be processed with phosphatization

Connections	OD mm	ID mm	Length mm
NC23-31	79.4	31.8	9150
NC26-35	88.9	38.1	9150
NC31-41	104.8	50.8	9150 or 9450
NC35-47	120.7	50.8	915 or 9450
NC38-50	127.0	57.2	9150 or 9450
NC44-60	152.4	57.2	9150 or 9450
NC44-60	152.4	71.4	9150 or 9450
NC44-62	158.8	57.2	9150 or 9450
NC46-62	158.8	71.4	9150 or 9450
NC46-65	165.1	57.2	9150 or 9450
NC46-65	165.1	71.4	9150 or 9450
NC46-67	171.4	57.2	9150 or 9450
NC50-67	171.4	71.4	9150 or 9450
NC50-70	177.8	57.2	9150 or 9450
NC50-70	177.8	71.4	9150 or 9450
NC50-72	184.2	71.4	9150 or 9450
NC56-77	196.8	71.4	9150 or 9450
NC56-80	203.2	71.4	9150 or 9450
6 5/8REG	209.6	71.4	9150 or 9450
NC61-90	228.6	71.4	9150 or 9450
7 5/8REG	241.3	76.2	9150 or 9450
NC70-97	247.6	76.2	9150 or 9450
NC70-100	254.0	76.2	9150 or 9450
8 5/8REG	279.4	76.2	9150 or 9450