Product Details

API 5CT Couplings for Casing and Tubing

1. Technical standard:API SPEC 5CT,API SPEC 5B,ISO 11960:2004

2. Product grade:H40,J55,N80-1,N80Q,L80,C90,T95,P110

3.Specification range:

OD55.88~141.3mm(1.9"~4 1/2") for Tubing Couplings

OD127~365.12mm(4-1/2"to 20") for Casing Couplings

4.Thread types:

Tubing Couplings: External upset(EU),Non-upset(NU)

Note: We also supply permium thread products by customer's request

5.Surface treatment: Whole phosphating, or inside phosphating and outside coating

6.Packing: By carton, wooden case, wooden pallet, or by requirements of customers

7.Quality Control:

1. 100% quality test before delivery.

2. Test report will show to users.

8.Technical Parameter:

API Non-upset tubing coupling---Dimensions, tolerances and masses

Label 1	Size ^a	Outside diameter	Minimum length	Diameter of recess	Width of bearing face	Max bearing face diameter special bevel	Mass kg
	Outside Diameter D mm	Outside diameter	Minimum length	Diameter of recess	Width of bearing face	Max bearing face diameter special bevel
	Outside Diameter D mm	W^bmm	N_Lmm	Q mm	b mm	Bf mm
1	2	3	4	5	6	7	8
1.900 2-3/8 2-7/8 3-1/2 4 4-1/2	48.26 60.32 73.02 88.90 101.60 114.30	55.88 73.02 88.90 107.95 120.65 132.08	95.25 107.95 130.18 142.88 146.05 155.58	49.86 61.93 74.63 90.50 103.20 115.90	1.59 4.76 4.76 4.76 4.76 4.76	52.07 66.68 80.98 98.42 111.12 123.19	0.56 1.28 2.34 3.71 4.35 4.89
^a The size designation for the coupling is the same size designation for the pipe on which the coupling is used. ^b Tolerance on outside diameter W,±1%

API External-upset tubing coupling---Dimensions, tolerances and masses

Label1	Size ^a	Outside diameter		Min length	Diameter of recess	Width of bearing face	Max bearing face diameter Bf		Mass kg
	Outside diameter	Regular& Special bevel	Special clearance	Min length	Diameter of recess	Width of bearing face	Special bevel	Special clearance	Mass kg
	D mm	W^bmm	W_C^cmm	N_Lmm	Q mm	b mm	mm	mm	Regular	Special clearance
1	2	3	4	5	6	7	8	9	10	11
1.900 2-3/8 2-7/8 3-1/2 4 4-1/2	48.26 60.32 73.02 88.90 101.60 114.30	63.50 77.80 93.17 114.30 127.00 141.30	- 73.91 87.88 106.17 - -	98.42 123.82 133.35 146.05 152.40 158.75	54.76 67.46 80.16 96.85 109.55 122.25	3.18 3.97 5.56 6.35 6.35 6.35	58.34 71.83 85.88 104.78 117.48 130.96	- 69.90 83.24 100.71 - -	0.84 1.55 2.40 4.10 4.82 6.05	- 1.07 1.55 2.38 - -
^a The size designation for the coupling is the same size designation for the pipe on which the coupling is used. ^bTolerance on outside diameter W,±1% ^CTolerance on outside diameter W_c,±0.38mm

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