API 5CT Btc Tubing or Casing Couplings

• Certification: ISO9001:2015
• Power Source: Hydraulic
• Operation Pressure: Atmospheric Pressure
• Applicable Medium: Crude Oil
• Structure: Vertical
• Material: Alloy
• Model NO.: 2 7/8
• Thread: Eue/Nue
• Surface Treatment: Phosphating
• Grade: N 80
• Transport Package: Pallet
• Specification: 2 7/8
• Trademark: MED
• Origin: China
• Production Capacity: 10000/Month

Product Description

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 Tubing Couplings: 1"- 4 ½" EU - NU
• API Casing Couplings: 4 ½" - 20" ST - LT - BT
• Grades: H-40, J-55, K-55, N-80, T-95, P-110, C-100, Q-125
• Many proprietary grade requirements available on request
• Improved Buttress Couplings
• Modified Couplings
• Special Clearance Couplings
• Custom Sizes and Lengths

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