Audited Supplier
P690
Technical/Sample/Quality
Forging
Painted
Atmospheric Pressure
Alloy
SHUNFU
Standard
3 1/8" - 11"
China
8431431000
Product Description
P690 Non Magnetic Drill Collar
One of the main strengths of ShunFu is the ability to be a single source manufacturer of special Non Magnetic collars. Only those products which successfully pass our rigorous inspection controls are allowed to leave our factory. From the sourcing of materials to the final quality control all ShunFu manufactured products pass through our precision machining production steps including BTA boring, CNC lathe and milling, roller burnishing, shot peening, long distance gunhole-drilling and laser cladding at a 6-axis machine.
The reputation of ShunFu in the manufacture and supply of Non Magnetic drill string components is based upon extensive in-house experience both in metallurgy and precision manufacturing. ShunFu has always been the leader in the development of Non Magnetic materials, special manufacturing processes and testing procedures such as hammer peening and hot-spot testing.
Being specifically focused on the manufacturing of nonmagnetic drill string components makes ShunFu a leader in complex precision machining and service at the highest of standards.
Drill Collars are made from
high purity austenitic stainless steel.Low & High Yield Material available
Advanced chemical composition control system and special forging process guarantee the excellent mechanical properties, corrosion
resistant performance and high fatigue resistance of our Non- Magnetic material.
Shoot Peening on Connections.
Chemical Composition
P690 is a high pitting corrosion resistant nonmagnetic, austenitic Cr-Ni-Mo-N-steel, specifically developed for oilfield applications| Element | P690 |
| Carbon | max. 0.05 |
| Manganese | 3.00-8.00 |
| Chromium | 22.00-28.00 |
| Molyddenum | 3.00-5.00 |
| Nitrogen | 14.00-18.00 |
| Nickel | MIN. 0.40 |
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" | 150 ksi | 1035 N/mm2 |
| 0,2%-offset method OD 9 1/2" and larger | 140 ksi | 965 N/mm2 |
| Tensile Strength (min.): | 160 ksi | 1104 N/mm2 |
| Elongation (min.): | 20% | 20% |
| Reduction of area (min.): | 50% | 50% |
| Impact energy (min.): | 120 ft.lb | 162 J |
| Endurance Strength / N=105(min.): | +/- 90 ksi | +/- 550 N/mm2 |
| Hardness Brinell: | 350-450 HB | 350-450 HB |
Magnetic Properties
Relative permeability: < 1,001Corrosion 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 warm-forging. Each collar is tested according to ASTM A 262, Pract. A and E, last edition.
Pitting Corrosion: Due to the high chromium-, nickel- molybdenum and nitrogen contents and the unique forging process an excellent resistance to pitting corrosion is given.
Non-Destructive testing
Magnetic inspection: Drill collars are 100% tested by a proprietary probe-testing process using a Forster 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.
P690 Non-Mag Drill Collars meet all requirements of API Spec. 7.1, last edition. All tests are carried out according to ASTM-Standards, last editions.
Our Services
Being specifically focused on the manufacturing of nonmagnetic drill string components makes ShunFu a leader in complex precision machining and service at the highest of standards.Technical Assistance
Technical assistance in the manufacturability and design of complex collars machined.
Warehousing
Stocking and sales of standard high strength API Spec 7 nonmagnetic drill collars.
Custom Cutting
Stocking and sales of solid P530, P550, P580 and P750 NM material cut to length at customer request.
