Product Description
API Non-magnetic Drill (Drilling) Collar and Sub
Drill collar is a bar made of solid steel, either common carbon steel or non-magnetic steel alloy. It is used in the drilling of oil wells for weighting drill bit, enabling it to drill through rock. Drill collar is the lowest element of a drill string. Our drill collars are manufactured strictly according to API standard.
Non-magnetic drill collars are made from chrome manganese low carbon austenitic alloy. It has excellent lower magnetic permeability, high strength of mechanical properties, outstanding resistant to stress corrosion cracking, and no tendency to galling. Our non-magnetic drill collars are controlled strictly in the refining and forging process.
Product Parameters
3. Parameters of Drill Collar
| Type |
OD(mm) |
ID(mm) |
L(m) ±152.4mm d |
DF(mm) ±0.4 |
| NC23-31 |
79.4 |
31.8 |
9.14 |
76.2 |
| NC26-35 |
88.9 |
38.1 |
9.14 |
82.9 |
| NC31-41 |
104.8 |
50.8 |
9.14or9.45 |
100.4 |
| NC35-47 |
120.6 |
50.8 |
9.14or9.45 |
114.7 |
| NC38-50 |
127 |
57.2 |
9.14or9.45 |
121 |
| NC44-60 |
152.4 |
57.2 |
9.14or9.45 |
144.5 |
| NC44-60 |
152.4 |
71.4 |
9.14or9.45 |
144.5 |
| NC46-62 |
158.8 |
57.2 |
9.14or9.45 |
149.2 |
| NC46-62 |
158.8 |
71.4 |
9.14or9.45 |
150 |
| NC46-65 |
165.1 |
57.2 |
9.14or9.45 |
154.8 |
| NC46-65 |
165.1 |
71.4 |
9.14or9.45 |
154.8 |
| NC46-67 |
171.4 |
57.2 |
9.14or9.45 |
159.5 |
| NC50-70 |
177.8 |
57.2 |
9.14or9.45 |
164.7 |
| NC50-70 |
177.8 |
71.4 |
9.14or9.45 |
164.7 |
| NC50-72 |
184.2 |
71.4 |
9.14or9.45 |
169.5 |
| NC56-77 |
196.8 |
71.4 |
9.14or9.45 |
185.3 |
| NC56-80 |
203.2 |
71.4 |
9.14or9.45 |
190.1 |
| 6-5/8REG |
209.6 |
71.4 |
9.14or9.45 |
195.6 |
| NC61-90 |
228.6 |
71.4 |
9.14or9.45 |
212.7 |
| 7-5/8REG |
241.3 |
76.2 |
9.14or9.45 |
223.8 |
| NC70-97 |
247.6 |
76.2 |
9.14or9.45 |
232.6 |
| NC70-100 |
254 |
76.2 |
9.14or9.45 |
237.3 |
| 8-5/8REG |
279.4 |
76.2 |
9.14or9.45 |
266.7 |
| NC50-67 |
171.5 |
71.4 |
9.14or9.45 |
159.5 |
| Mechanical Performance |
| OD |
Yield Strength |
Tensile Strength σb |
Elongation |
Reduction of are |
Impact |
| Size |
σ0.2 |
Mpa(psi) |
δ4% |
% |
Ft.1b |
| |
Mpa(psi) |
|
|
|
|
| 3 1/8~6 3/4 |
≥758 |
≥827 |
≥18 |
50 |
≥50 |
| -110,000 |
-120,000 |
| 7~10 |
≥689 |
≥758 |
≥20 |
| -100,000 |
-110,000 |
Detailed Photos
Company Profile
Our team
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in Central China, is a professional supplier of oilfield equipment and tools.
Our factories has more than 15 years experiences of manufacturing oilfield equipment and tools.
Our sales team has more than 10 years importing exporting experiences in oil & gas industry.
Our products
We are specialized in such as casing centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collars, sucker rods, drill pipes, drill collars and pumping units
our products are well sold in Mideast, North America, Latin America, Central Asia, Southeast Asia, Russia, North Africa, etc.
We are committed to providing high-quality and cost-effective products and services to our customers.
Our services
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry. We are professional in many kinds of casing centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collar, sucker rods, drill pipes, dill collars, etc.
Let's join hands and work together to create a better future!
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