Customization: | Available |
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Length: | 7.62-10.36mm |
Surface Finish: | Galvanized |
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API 5CT Oil Casing Steel Pipe
Oil casing pipes, also known as production casings. It is the last layer of casing in the oil and gas well casing process, from the wellhead down to below the oil and gas layer.The depth of the casing casing is basically the depth of the well.
The function of the oil casing is the passage of oil and gas to the ground, which isolates the oil and gas from the entire formation to ensure that the oil and gas pressure does not leak. After the oil and gas wells are transferred into production, the quality of the oil casings must be guaranteed to maintain a certain number of years of exploitation.
Casing design for each size is done by calculating the worst conditions that may be faced during drilling and production. Mechanical properties of designed pipes such as collapse resistance, burst pressure, and axial tensile strength must be sufficient for the worst conditions.
Mechanical properties of casing pipe | |||||||
Grade | Type | Total elongation | Yield strength | Yield strength | Tensile strength | Hardness | Hardness |
under load | (min)Mpa | (max)Mpa | min Mpa | Max (HRC) | Max (HBW) | ||
(%) | |||||||
J55 | - | 0.5 | 379 | 552 | 517 | - | - |
K55 | - | 0.5 | 379 | 552 | 655 | - | - |
N80 | 1 | 0.5 | 552 | 758 | 689 | - | - |
N80 | Q | 0.5 | 552 | 758 | 689 | - | - |
L80 | 1 | 0.5 | 552 | 655 | 655 | 23 | 241 |
L80 | 9Cr | 0.5 | 552 | 655 | 655 | 23 | 241 |
L80 | 13Cr | 0.5 | 552 | 655 | 655 | 23 | 241 |
C90 | - | 0.5 | 621 | 724 | 689 | 25.4 | 255 |
C95 | - | 0.5 | 655 | 758 | 724 | - | - |
T95 | - | 0.5 | 655 | 758 | 724 | 25.4 | 255 |
P110 | - | 0.6 | 758 | 965 | 862 | - | - |
Q125 | All | 0.65 | 862 | 1034 | 931 | - | - |
Chemical compositions of casing pipe | |||||||||||
Standard | Grade | Chemical compositions(%) | |||||||||
API SPEC 5CT | J55 | C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V |
K55 | 0.34~0.39 | 0.20~0.35 | 1.25~1.50 | ≤0.020 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 | / | / | |
N80 | 0.34~0.38 | 0.20~0.35 | 1.45~1.70 | ≤0.020 | ≤0.015 | ≤0.15 | / | / | / | 0.11~0.16 | |
L80 | 0.15~0.22 | ≤1.00 | 0.25~1.00 | ≤0.020 | ≤0.010 | 12.0~14.0 | ≤0.20 | ≤0.20 | / | / | |
P110 | 0.26~0.395 | 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 |
Specification & Size of Casing Pipe
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O. D. | Weight | W. T. | End Machining Form | ||||||||
Steel Grade | ||||||||||||
in | mm | lb/ft | kg/m | in | mm | H40 | J55 | L80 | N80 | C90 | P110 | |
K55 | T95 | |||||||||||
4-2/1 | 4.5 | 114.3 | 9.5 | 14.14 | 0.205 | 5.21 | PS | PS | - | - | - | - |
10.5 | 15.63 | 0.224 | 5.69 | - | PSB | - | - | - | - | |||
11.6 | 17.26 | 0.25 | 6.35 | - | PSLB | PLB | PLB | PLB | PLB | |||
13.5 | 20.09 | 0.29 | 7.37 | - | - | PLB | PLB | PLB | PLB | |||
15.1 | 22.47 | 0.337 | 9.56 | - | - | - | - | - | PLB | |||
5 | 5 | 127 | 11.5 | 17.11 | 0.22 | 5.59 | - | PS | - | - | - | - |
13 | 19.35 | 0.253 | 6.43 | - | PSLB | - | - | - | - | |||
15 | 22.32 | 0.296 | 7.52 | - | PSLB | PLB | PLB | PLBE | PLB | |||
18 | 26.79 | 0.362 | 9.19 | - | - | PLB | PLB | PLBE | PLB | |||
21.4 | 31.85 | 0.437 | 11.1 | - | - | PLB | PLB | PLB | PLB | |||
23.2 | 34.53 | 0.478 | 12.14 | - | - | - | - | PLB | - | |||
24.1 | 35.86 | 0.5 | 12.7 | - | - | - | - | PLB | - | |||
5-1/2 | 5.5 | 139.7 | 14 | 20.83 | 0.244 | 6.2 | PS | PS | - | - | - | - |
15.5 | 23.07 | 0.275 | 6.98 | - | PSLB | - | - | - | - | |||
17 | 25.3 | 0.304 | 7.72 | - | PSLB | PLB | PLB | PLBE | PLB | |||
20 | 29.76 | 0.361 | 9.17 | - | - | PLB | PLB | PLBE | PLB | |||
23 | 34.23 | 0.415 | 10.54 | - | - | PLB | PLB | PLBE | PLB | |||
26.8 | 39.88 | 0.5 | 12.7 | - | - | - | - | - | - | |||
29.7 | 44.2 | 0.562 | 14.27 | - | - | - | - | - | - | |||
32.6 | 48.51 | 0.625 | 15.88 | - | - | - | - | - | - | |||
35.3 | 52.53 | 0.687 | 17.45 | - | - | - | - | - | - | |||
38 | 56.55 | 0.75 | 19.05 | - | - | - | - | - | - | |||
40.5 | 60.27 | 0.812 | 20.62 | - | - | - | - | - | - | |||
43.1 | 64.14 | 0.875 | 22.22 | - | - | - | - | - | - | |||
6-5/8 | 6.625 | 168.28 | 20 | 29.76 | 0.288 | 7.32 | PS | PSLB | - | - | - | - |
24 | 35.72 | 0.352 | 8.94 | - | PSLB | PLB | PLB | PLBE | PLB | |||
28 | 41.67 | 0.417 | 10.59 | - | - | PLB | PLB | PLBE | PLB | |||
32 | 47.62 | 0.475 | 12.06 | - | - | PLB | PLB | PLBE | PLB | |||
7 | 7 | 177.8 | 17 | 25.3 | 0.231 | 5.87 | PS | - | - | - | - | - |
20 | 29.76 | 0.272 | 6.91 | PS | PS | - | - | - | - | |||
23 | 34.23 | 0.317 | 8.05 | - | PSLB | PLB | PLB | PLBE | - | |||
26 | 38.69 | 0.362 | 9.19 | - | PSLB | PLB | PLB | PLBE | PLB | |||
29 | 43.16 | 0.408 | 10.36 | - | - | PLB | PLB | PLBE | PLB | |||
32 | 47.62 | 0.453 | 11.51 | - | - | PLB | PLB | PLBE | PLB | |||
35 | 52.09 | 0.498 | 12.65 | - | - | PLB | PLB | PLBE | PLB | |||
38 | 56.55 | 0.54 | 13.72 | - | - | PLB | PLB | PLBE | PLB | |||
42.7 | 63.54 | 0.625 | 15.88 | - | - | - | - | - | - | |||
46.4 | 69.05 | 0.687 | 17.45 | - | - | - | - | - | - | |||
50.1 | 74.56 | 0.75 | 19.05 | - | - | - | - | - | - | |||
53.6 | 79.77 | 0.812 | 20.62 | - | - | - | - | - | - | |||
57.1 | 84.97 | 0.875 | 22.22 | - | - | - | - | - | - | |||
7-5/8 | 7.625 | 193.68 | 24 | 35.72 | 0.3 | 7.62 | PS | - | - | - | - | - |
26.4 | 39.29 | 0.328 | 8.33 | - | PSLB | PLB | PLB | PLBE | PLB | |||
29.7 | 44.2 | 0.375 | 9.52 | - | - | PLB | PLB | PLBE | PLB | |||
33.7 | 50.15 | 0.43 | 10.92 | - | - | PLB | PLB | PLBE | PLB | |||
39 | 58.05 | 0.5 | 12.7 | - | - | PLB | PLB | PLBE | PLB | |||
42.8 | 63.69 | 0.562 | 14.27 | - | - | PLB | PLB | PLB | PLB | |||
45.3 | 67.41 | 0.595 | 15.11 | - | - | PLB | PLB | PLB | PLB | |||
47.1 | 70.09 | 0.625 | 15.88 | - | - | PLB | PLB | PLB | PLB | |||
51.2 | 76.19 | 0.687 | 17.45 | - | - | - | - | - | - | |||
55.3 | 80.3 | 0.75 | 19.05 | - | - | - | - | - | - | |||
8-5/8 | 8.625 | 219.08 | 24 | 35.72 | 0.264 | 6.71 | - | PS | - | - | - | - |
28 | 41.62 | 0.304 | 7.72 | PS | - | - | - | - | - | |||
32 | 47.62 | 0.352 | 8.94 | PS | PSLB | - | - | - | - | |||
36 | 53.57 | 0.4 | 10.16 | - | PSLB | PLB | PLB | PLBE | PLB | |||
40 | 59.53 | 0.45 | 11.43 | - | - | PLB | PLB | PLBE | PLB | |||
44 | 65.48 | 0.5 | 12.7 | - | - | PLB | PLB | PLBE | PLB | |||
49 | 72.92 | 0.557 | 14.15 | - | - | PLB | PLB | PLBE | PLB | |||
9-5/8 | 9.625 | 244.48 | 32.3 | 48.07 | 0.312 | 7.92 | PS | - | - | - | - | - |
36 | 53.57 | 0.352 | 8.94 | PS | PSLB | - | - | - | - | |||
40 | 59.53 | 0.395 | 10.03 | - | PSLB | PLB | PLB | PLBE | - | |||
43.5 | 64.73 | 0.435 | 11.05 | - | - | PLB | PLB | PLBE | PLB | |||
47 | 69.94 | 0.472 | 11.99 | - | - | PLB | PLB | PLBE | PLB | |||
53.5 | 79.62 | 0.545 | 13.84 | - | - | PLB | PLB | PLBE | PLB | |||
58.4 | 86.91 | 0.595 | 15.11 | - | - | PLB | PLB | PLB | PLB | |||
59.4 | 88.4 | 0.609 | 15.47 | - | - | - | - | - | - | |||
64.9 | 96.58 | 0.672 | 17.07 | - | - | - | - | - | - | |||
70.3 | 104.62 | 0.734 | 18.64 | - | - | - | - | - | - | |||
75.6 | 112.5 | 0.797 | 20.24 | - | - | - | - | - | - | |||
10-3/4 | 10.75 | 273.05 | 32.75 | 48.74 | 0.279 | 7.09 | PS | - | - | - | - | - |
40.5 | 60.27 | 0.35 | 8.89 | PS | PSB | - | - | - | - | |||
15.5 | 67.71 | 0.4 | 10.16 | - | PSB | - | - | - | - | |||
51 | 75.9 | 0.45 | 11.43 | - | PSB | PSB | PSB | PSBE | PSB | |||
55.5 | 82.59 | 0.495 | 12.57 | - | - | PSB | PSB | PSBE | PSB | |||
60.7 | 90.33 | 0.545 | 13.84 | - | - | - | - | PSBE | PSB | |||
65.7 | 97.77 | 0.595 | 15.11 | - | - | - | - | PSB | PSB | |||
73.2 | 108.93 | 0.672 | 17.07 | - | - | - | - | - | - | |||
79.2 | 117.86 | 0.734 | 18.64 | - | - | - | - | - | - | |||
85.3 | 126.94 | 0.797 | 20.24 | - | - | - | - | - | - | |||
11-3/4 | 11.75 | 42 | 62.5 | 0.333 | 8.46 | PS | - | - | - | - | - | |
47 | 69.94 | 0.375 | 20.24 | - | - | - | - | - | - | |||
54 | 80.36 | 0.435 | 8.46 | - | - | - | - | - | - | |||
60 | 89.29 | 0.489 | 9.53 | - | - | - | - | - | - | |||
65 | 96.73 | 0.534 | 11.05 | - | - | - | - | - | - | |||
71 | 105.66 | 0.582 | 14.42 | - | - | - | - | - | - | |||
13-3/8 | 13.375 | 339.73 | 48 | 71.43 | 0.33 | 8.38 | PS | - | - | - | - | - |
54.5 | 81.1 | 0.38 | 9.65 | - | PSB | - | - | - | - | |||
61 | 90.78 | 0.43 | 10.92 | - | PSB | - | - | - | - | |||
68 | 101.19 | 0.48 | 12.19 | - | PSB | PSB | PSB | PSB | PSB | |||
72 | 107.15 | 0.514 | 13.06 | - | - | PSB | PSB | PSB | PSB | |||
16 | 16 | 406.4 | 65 | 96.73 | 0.375 | 9.53 | PS | - | - | - | - | - |
75 | 111.61 | 0.438 | 11.13 | - | PSB | - | - | - | - | |||
84 | 125.01 | 0.495 | 12.57 | - | PSB | - | - | - | - | |||
109 | 162.21 | 0.656 | 16.66 | - | P | P | P | - | P | |||
18-5/8 | 18.625 | 473.08 | 87.5 | 130.21 | 0.435 | 11.05 | PS | PSB | - | - | - | - |
20 | 20 | 508 | 94 | 139.89 | 0.438 | 11.13 | PS-L | PSLB | - | - | - | - |
106.5 | 158.49 | 0.5 | 12.7 | - | PSLB | - | - | - | - | |||
133 | 197.93 | 0.635 | 16.13 | - | PSLB | - | - | - | - | |||
P--Plain;S--Short-thread;L--Long-thread;B--Buttress thread;E--Extreme thread |
Shandong Huazhu Metal Manufacture Co., Ltd. is located in Shandong Province, one of the important steel machinery industry base in northern China. We specialize in producing all kinds of prefabricated/processed building materials and related services, with rich experiences in steel manufacturing, engineering and trading.
Our main products include API 5CT Oil Casing Steel Pipe /galvanized steel plate/stainless steel plate/stainless steel pipe/galvanized steel coil galvanized steel pipe/lead sheet/galvanized steel pipe/pre-painted galvanized steel coil/corrugated steel sheet, thick-wall seamless steel pipe/alloy seamless steel pipe/welded steel pipe, etc. Along with various kinds of metal materials, we also provide stamping, welding, CNC turning, bending wire cutting laser cutting service to our customers.
The manufacture base covers an area of 16000 square meters, with more than 50 employees. Our annual production capacity is over 300000 Tons, including an annual production capacity of 1,000 tons of API 5CT Oil Casing Steel Pipe. We are capable of customizing metal products with special specifications according to drawings and samples that our customers needed.
With high quality products, competitive price, reasonable payment arrangement, thoughtful and efficient service, we've gained a significant share of market in the United States, Australia, South Korea, Turkey, Saudi Arabia, India, Russia, America, Thailand, Myanmar, Vietnam, Philippines, Chile and other countries and regions. We will continue to create value for our global customers with our long-term commitment to improve our product quality and service levels.
1. How soon can make delivery?
For stock products, will make shipments in 5- 7 days after receiving deposit or receiving L/C; for products need new production for common materials, usually we can make shipments in 15-20 days; for products need new production for special and rare materials, usually need 30-40 days to arrive.
2. Will the Test Certificate be certified to EN10204 3.1?
For the new production products no need furthur cutting or processing, will provide the Original Mill Test Certificate certified to EN10204 3.1; for the stock products and the products need cutting or furthur processing, will issue Certificate of Quality on our Company, It will show the original mill name and the original datas.
3. Once the received products found not comply with the products the contract demands, what will you do?
Once the received products found not comply with the products the contract lists, when receiving the pictures and the official documents and data from your side, if it is proved not comply, we will compensate the loss at first time.