| Customization: | Available |
|---|---|
| Certification: | ISO9001:2015 |
| Power Source: | Hydraulic |
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Casing coupling is a kind of drilling tool in oil field, which is mainly used for casing connection. The casing coupling mainly solves the problem that the existing coupling is prone to fatigue fracture due to stress concentration.
Structure:The casing end is connected with the inner wall of the coupling by tapered thread, and the end of the coupling body is connected with the oil pipe by the same thread and the same pitch flat thread. The utility model has the characteristics of relieving the stress concentration at the root of the external thread of the single taper thread connecting sleeve, not easy to produce fatigue fracture, and the connection effect is good.
The thread type of casing couplngs main include: Long Round-thread Casing Coupling(LC), Short Round-thread Casing coupling(SC), Buttress Thread Casing Coupling(BC), and steel grade mainly include: J55, K55, N80, L80, P110 and so on.
Couplings:
| API EUE Tubing Couplings | |||||
| Size OD | Couplig Size OD (in) | Length(in) |
Weight Per Piece (Kg) |
Palletized Carton Quantity (piece) |
Palletized Carton Weight (Kg) |
| 1.9 | 2.188 | 3.750 | 0.84 | 2,800 | 2352 |
| 2 3/8 | 3.063 | 4.875 | 1.55 | 1,414 | 2239 |
| 2 7/8 | 3.668 | 5.500 | 2.40 | 792 | 1901 |
| 3 1/2 | 4.500 | 5.750 | 4.10 | 448 | 1837 |
| 4 | 4.750 | 5.750 | 4.82 | 320 | 1543 |
| 4 1/2 | 5.563 | 6.500 | 6.05 | 252 | 1525 |
| API NUE Tubing Couplings | |||||
| 1.9 | 2.188 | 3.750 | 0.56 | 2900 | 1624 |
| 2 3/8 | 2.875 | 4.500 | 1.28 | 1,512 | 1936 |
| 2 7/8 | 3.500 | 5.500 | 2.34 | 800 | 1872 |
| 3 1/2 | 4.250 | 5.625 | 3.71 | 502 | 1863 |
| 4 | 4.726 | 5.750 | 4.35 | 382 | 1662 |
| 4 1/2 | 5.200 | 6.500 | 4.89 | 252 | 1233 |
| Grade Colour Codes | |||
| Grade | Grade Type | Colours For Couplings | |
| Entair Coupling | Band(s) | ||
| J55 | Bright Green | None | |
| K55 | Bright Green | None | |
| N80 | 1 | Red | None |
| N80 | Q | Red | Green |
| L80 | 1 | Red | One Brown |
| P110 | White | None | |
About Us
Maierda, located in Central China, is a professional supplier of petroleum equipment and tools.
Our factory has more than 15 years' experience in the R&D, production, sales and service of oilfield equipment and machinery.
Our sales team has more than 10 years importing & exporting experiences in the oil & gas industry.
Main Products
We are mainly engaged in oil field equipment and tools including tubing couplings, casing couplings, crossovers, polished rod couplings, sucker rod couplings, polished rod clamps, sucker rod centralizers (guides), polished rod, sucker rod, pup joints, etc.
We also provide some other competitive products in the oil & gas field including casing centralizers, stop collar, tubing centralizer, drill pipe centralizer, float equipment (collar and shoe), cementing plugs, cementing heads, stage collars, cement baskets, hammer unions, chiksan swivel joints, etc.
Our Services
We are committed to providing high-quality and cost-effective products and services to our customers.
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry.
Hope to have a good cooperation with you!
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