API 5CT J55 Seamless Casing Tubing
Because of the low steel grade of J55, it is used for shallow oil and gas extraction.
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API 5CT J55 Seamless Casing Tubing
Product introduction
The J55 API casing or tubing is a relatively common one in oil drilling. Because of the low
steel grade of J55, it is used for shallow oil and gas extraction. Due to its low price among
other grades of steel, it enjoys broader applications. The J55 API casing or tubing is widely
used in the extraction of natural gas and coalbed methane, and can be commonly found in
shallow wells, geothermal wells, and water wells.
J55 Tubing Material can be generally relevant to oil, development, shipbuilding, refining,
aeronautics, electric power, sustenance, paper, compound industry, restorative hardware,
boilers, heat exchangers, metallurgy, etc. 5CT J55 Casing Tubing serves to transport both
unrefined petroleum and gaseous petrol from oil and gas layer to the surface pipeline
subsequent to boring is finished. It can shoulder the weight created by the misuse procedure.
Specification
| Pipe Casing Sizes, Oilfield Casing Sizes & Casing Drift Sizes | |
| Outer Diameter (Casing Pipe Sizes) | 4 1/2"-20", (114.3-508mm) |
| Standard Casing Sizes | 4 1/2"-20", (114.3-508mm) |
| Thread Type | Buttress thread casing, Long round thread casing, Short round thread casing |
| Function | It can protect the tubing pipe. |
Dimension Standard of API 5CTQ J-55 Tubing
| Size | Weight | Outside Diameter | Wall Thickness | End Finish | ||
| Grade | ||||||
| in | mm | in | mm | J55 K55 |
||
| 4 1/2 | 9.50 | 4.500 | 114.3 | 0.205 | 5.21 | PS |
| 10.50 | 0.224 | 5.69 | PSB | |||
| 11.60 | 0.250 | 6.35 | PSLB | |||
| 13.50 | 0.290 | 7.37 | – | |||
| 15.10 | 0.337 | 9.56 | – | |||
| 5 | 11.50 | 5.00 | 127.00 | 0.220 | 5.59 | PS |
| 13.00 | 0.253 | 6.43 | PSLB | |||
| 15.00 | 0.296 | 7.52 | PSLB | |||
| 18.00 | 0.362 | 9.19 | – | |||
| 21.40 | 0.437 | 11.10 | – | |||
| 23.20 | 0.478 | 12.14 | – | |||
| 24.10 | 0.500 | 12.70 | – | |||
| 5 1/2 | 14.00 | 5.500 | 139.7 | 0.244 | 6.20 | PS |
| 15.50 | 0.275 | 6.98 | PSLB | |||
| 17.00 | 0.304 | 7.72 | PSLB | |||
| 20.00 | 0.361 | 9.17 | – | |||
| 23.00 | 0.415 | 10.54 | – | |||
| 6 5/8 | 20.00 | 6.625 | 168.28 | 0.288 | 7.32 | PSLB |
| 24.00 | 0.352 | 8.94 | PSLB | |||
| 28.00 | 0.417 | 10.59 | – | |||
| 32.00 | 0.475 | 12.06 | – | |||
| 7 | 17.00 | 7.00 | 177.80 | 0.231 | 5.87 | – |
| 20.00 | 0.272 | 6.91 | PS | |||
| 23.00 | 0.317 | 8.05 | PSLB | |||
| 26.00 | 0.362 | 9.19 | PSLB | |||
| 29.00 | 0.408 | 10.36 | – | |||
| 32.00 | 0.453 | 11.51 | – | |||
| 35.00 | 0.498 | 12.65 | – | |||
| 38.00 | 0.540 | 13.72 | – | |||
| 7 5/8 | 24.00 | 7.625 | 193.68 | 0.300 | 7.62 | – |
| 26.40 | 0.328 | 8.33 | PSLB | |||
| 29.70 | 0.375 | 9.52 | – | |||
| 33.70 | 0.430 | 10.92 | – | |||
| 39.00 | 0.500 | 12.70 | – | |||
| 42.80 | 0.562 | 14.27 | – | |||
| 45.30 | 0.595 | 15.11 | – | |||
| 47.10 | 0.625 | 15.88 | – | |||
| 8 5/8 | 24.00 | 8.625 | 219.08 | 0.264 | 6.71 | PS |
| 28.00 | 0.304 | 7.72 | – | |||
| 32.00 | 0.352 | 8.94 | PSLB | |||
| 36.00 | 0.400 | 10.16 | PSLB | |||
| 40.00 | 0.450 | 11.43 | – | |||
| 44.00 | 0.500 | 12.70 | – | |||
| 49.00 | 0.557 | 14.15 | – | |||
| 9 5/8 | 32.30 | 9.625 | 244.48 | 0.312 | 7.92 | – |
| 36.00 | 0.352 | 8.94 | PSLB | |||
| 40.00 | 0.395 | 10.03 | PSLB | |||
| 43.50 | 0.435 | 11.05 | – | |||
| 47.00 | 0.472 | 11.99 | – | |||
| 53.50 | 0.545 | 13.84 | – | |||
| 58.40 | 0.595 | 15.11 | – | |||
| 10 3/4 | 32.75 | 10.75 | 273.05 | 0.279 | 7.09 | – |
| 40.50 | 0.350 | 8.89 | PSB | |||
| 15.50 | 0.400 | 10.16 | PSB | |||
| 51.00 | 0.450 | 11.43 | PSB | |||
| 55.50 | 0.495 | 12.57 | – | |||
| 60.70 | 0.545 | 13.84 | – | |||
| 65.70 | 0.595 | 15.11 | – | |||
| 13 3/8 | 48.00 | 13.375 | 339.73 | 0.330 | 8.38 | – |
| 54.50 | 0.380 | 9.65 | PSB | |||
| 61.00 | 0.430 | 10.92 | PSB | |||
| 68.00 | 0.480 | 12.19 | PSB | |||
| 72.00 | 0.514 | 13.06 | – | |||
| 16 | 65.00 | 16 | 406.40 | 0.375 | 9.53 | – |
| 75.00 | 0.438 | 11.13 | PSB | |||
| 84.00 | 0.495 | 12.57 | PSB | |||
| 109.00 | 0.656 | 16.66 | P | |||
| 18 5/8 | 87.50 | 18.625 | 473.08 | 0.435 | 11.05 | PSB |
| 20 | 94.00 | 20 | 508.00 | 0.438 | 11.13 | PSLB |
| 106.50 | 0.500 | 12.70 | PSLB | |||
| 133.00 | 0.635 | 16.13 | PSLB | |||
Technical data
Chemical Composition
| Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≤ | Ni≤ | Cu≤ | Mo≤ | V≤ | Als≤ |
| API 5CT J55 | 0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT K55 | 0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
0.020 |
0.015 |
0.15 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT N80 | 0.34-0.38 |
0.20-0.35 |
1.45-1.70 |
0.020 |
0.015 |
0.15 |
/ |
/ |
/ |
0.11-0.16 |
0.020 |
| API 5CT L80 | 0.15-0.22 |
1.00 |
0.25-1.00 |
0.020 |
0.010 |
12.0-14.0 |
0.20 |
0.20 |
/ |
/ |
0.020 |
| API 5CT J P110 | 0.26-035 |
0.17-0.37 |
0.40-0.70 |
0.020 |
0.010 |
0.80-1.10 |
0.20 |
0.20 |
0.15-0.25 |
0.08 |
0.020 |
Mechanical Properties
|
Steel Grade |
Yield Strength (Mpa) |
Tensile Strength (Mpa) |
|
API 5CT J55 |
379-552 |
≥517 |
|
API 5CT K55 |
≥655 |
≥517 |
|
API 5CT N80 |
552-758 |
≥689 |
|
API 5CT L80 |
552-655 |
≥655 |
|
API 5CT P110 |
758-965 |
≥862 |
Factory video
Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.
Warehouse storage
The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.

Packing and delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Production Technology
Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.
Honor
Application
Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.
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FAQ
How do you package the product?
The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.
Are the products inspected before shipment?
Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.
Can I visit your factory?
Of course. We welcome customers from all over the world to visit our factory.
What certifications have your products passed?
We have ISO 9001, SGS, EWC and other certifications.
Can you provide samples?
Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge
What is the loading port?
Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.
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Message
info@mingdingsteel.com

+8615553113555