P550 Oilfield Drilling Tools Non Magnetic Spiral Drill Collar for Drilling Rig

• Customization: Available
• After-sales Service: on Line Support
• Warranty: 1 Year
• Model NO.: Drill Collar
• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Od: 3 1/8-11 mm
• ID: 1 1/4-3 mm
• Length: 9150-9450
• Transport Package: Wooden Case
• Specification: 4 1/8"~10"
• Trademark: Wisechannel
• Origin: Jiangsu China
• HS Code: 8431431000
• Production Capacity: 10000units Per Year

Product Description

 

Description: 

1. CHEMICAL COMPOSITION

P550"is a special nonmagnetic, austenitic Mn-Cr-steel with a high nitrogen content.

HRNM-3     (P550)	C	Si	Mn	P	S	Cr	Ni	Mo	Cu	N	Nb
	≤0.05	≤1.00	19~22	≤0.030	≤0.020	16~19	1.2~2.0	0.5~0.8	≤0.30	0.5~0.8	≤0.05

2. MECHANICAL PROPERTIES

Following mechanical properties (tested at room temperature) are achieved by a special cold-working process over the full length of the collar:
Yield Strength (min.): OD up to 9 1/4"965 N/mm²
0,2%-offset method: OD 9 1/2"and larger / 900 N/mm²
Tensile Strength (min.): 1035 N/mm²
Elongation (min.): 20%
Reduction of area (min.): 50%
Impact energy (min.): 82 J
Endurance Strength / N=10⁵ (min.): ±550 N/mm²
Hardness Brinell (min.): 350-430 HB

3. MAGNETIC PROPERTIES

Relative permeability: ≤1,005.
4. CORROSION RESISTANCE
- Transgranular SCC: Prevented by special surface treatments (Hammer peening, roller burnishing, shot peening).
- Intergranular SCC: The occurrence of material sensitization is prevented by quenching after warmforging. Each collar is tested according to ASTM A 262, Pract. A and E, last edition.
- Pitting Corrosion: Due to a high chromium- and nitrogen content a high resistance to pitting corrosion is given.
5. NON-DESTRUCTIVE TESTING
- Magnetic inspection: Drill collars are 100% tested by a proprietary probe-testing process using a Förster Magnetomat 1.782. ("Hot Spot"-test). Magnetic permeability of each collar is certified with the printout of probe-testing. - Ultrasonic inspection: Each collar is ultrasonically inspected over 100% of the volume according to ASTM E 114, last edition as a minimum level.

P550 Non-Magnetic Drill Collars meet all requirements of API Spec. 7.1, last edition. All tests are carried out according to ASTM-Standards, last editions.

 

 

Connection	OD		ID		Length(mm)	Bevel dia.(mm)	Bned Strength ratio
	mm	in	mm	in
NC23-31	79.4	3 1/8	31.8	1 1/4	9150	76.2	2.57:1
NC26-35	88.9	3 1/2	38.1	1 1/2	9150	82.9	2.42:1
NC31-41	104.8	4 1/8	50.8	2	9150 or 9450	100.4	2.43:1
NC35-47	120.7	4 3/4	50.8	2	9150 or 9450	114.7	2.58:1
NC38-50	127	5	57.2	2 1/4	9150 or 9450	121.0	2.38:1
NC44-60	152.4	6	57.2	2 1/4	9150 or 9450	144.5	2.49:1
NC44-60	152.4	6	71.4	2 13/16	9150 or 9450	144.5	2.84:1
NC44-62	158.8	6 1/4	57.2	2 1/4	9150 or 9450	149.2	2.91:1
NC46-62	158.8	6 1/4	71.4	2 13/16	9150 or 9450	150.0	2.63:1
NC46-65	165.1	6 1/2	57.2	2 1/4	9150 or 9450	154.8	2.76:1
NC46-65	165.1	6 1/2	71.4	2 13/16	9150 or 9450	154.8	3.05:1
NC46-67	171.4	6 3/4	57.2	2 1/4	9150 or 9450	159.5	3.18:1
NC50-67	171.4	6 3/4	71.4	2 13/16	9150 or 9450	159.5	2.37:1
NC50-70	177.8	7	57.2	2 1/4	9150 or 9450	164.7	2.54:1
NC50-70	177.8	7	71.4	2 13/16	9150 or 9450	164.7	2.73:1
NC50-72	184.2	7 1/4	71.4	2 13/16	9150 or 9450	169.5	3.12:1
NC56-77	196.8	7 3/4	71.4	2 13/16	9150 or 9450	185.3	2.7:1
NC56-80	203.2	8	71.4	2 13/16	9150 or 9450	190.1	3.02:1
6 5/8REG	209.6	8 1/4	71.4	2 13/16	9150 or 9450	195.7	2.93:1
NC61-90	228.6	9	71.4	2 13/16	9150 or 9450	212.7	3.17:1
7 5/8REG	241.3	9 1/2	76.2	3	9150 or 9450	223.8	2.81:1
NC70-97	247.6	9 3/4	76.2	3	9150 or 9450	232.6	2.57:1
NC70-100	254	10	76.2	3	9150 or 9450	237.3	2.81:1
8 5/8REG	279.4	11	76.2	3	9150 or 9450	266.7	2.84:1

Q:How can I place order? 
A: You can contact us by email or social media like WhatsApp on the order detail or place order on line. 

Q:How about the payment?
A: For new clients, advance payment(30%-100% of total amount) is required, the balance need to be paid before the delivery after your inspection.

Q:How can I pay you?
A: By T/T (Telegraphic Transfer) or L/C (Letter of Credit). After you receive the PI, you can make the payment through your bank as per the terms mentioned in PI.

Q: What's the order procedure? 
A: First we discuss order details, production details by email ,TM or other social media; then we issue you an PI for your confirmation. You will be requested to make full payment or deposit before we go into production.After we get the deposit, we start to process the order. Depending on the products you order, we usually a couple of days or even moths to complete production if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we shall arrange the shipment for you. 

Q: How do you deal with  defective products received by the clients? 
A:  If there are some defective items, we usually credit to our customer or replace them in next shipment.