Audited Supplier
Henan DongFangLong Machine Manufacture Co.,Ltd
Henan Dongfanglong Machine Manufacture Co.,Ltd was founded on 1999, with the location of the Intersection of 106 National High way and Jintian Road, East Industries Areas of Puyang, Henan, China. We have nearly 20 years of experience of producing, developing and selling tubing coupling,casing coupling,pup joints,tool joints,and so on. We have the ISO 9001 Quality Control Certificate.
With the biggest API couplings workshop,we are one of the biggest manufacturers of API couplings.From 2009, our market has expanded abroad out of China. Our products have already been used in USA, Brazil, Venezuela, India, Kazakhstan, Indonesia and so on.
We adhere to the business theory of that:quality first,service first,integrity management,share the wealth,and convince that once cooperation makes forever friends .We sincerely hope to establish business relations with you .
High quality and the best price
API 5CT K55 J55 L80 N80 5" BTC casing coupling
API Buttress round thread casing couplings | |||
Casing OD (in) | Coupling OD (in ) | Length (in ) | Single Weight (kg) |
4 1/2 | 5.000 | 8.875 | 4.55 |
5 | 5.563 | 9.125 | 5.85 |
5 1/2 | 6.050 | 9.250 | 6.36 |
6 5/8 | 7.390 | 9.625 | 10.54 |
7 | 7.656 | 10.000 | 11.01 |
7 5/8 | 8.500 | 10.375 | 15.82 |
8 5/8 | 9.625 | 10.625 | 20.86 |
9 5/8 | 10.625 | 10.625 | 23.16 |
10 3/4 | 11.750 | 10.625 | 25.74 |
11 3/4 | 12.750 | 10.625 | 28.03 |
13 3/8 | 14.375 | 10.625 | 31.77 |
16 | 17.000 | 10.625 | 40.28 |
18 5/8 | 20.000 | 10.625 | 62.68 |
20 | 21.000 | 10.625 | 50.10 |
| Label 1 | Size a | Outside Diameter | Minimum Length NL mm | Diameter Of recess Q mm | Width of bearing face regular B mm | Maximum bearing face diameter B f | Mass kg | |||||||||
| Outside Diameter D mm | EU Regular W bmm | EU Special Clearance W c cmm | NU | EU | NU | EU | NU | EU | NU | EU | NU | EU | NU | |||
| Regular with special bevel mm | Special clearance mm | Regular with special bevel mm | Special clearance mm | |||||||||||||
| 1 | 2 | 3 | 4 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 1.050 | 26.67 | 42.16 | --- | 33.35 | 82.55 | 80.96 | 35.00 | 28.27 | 2.38 | 1.59 | 37.80 | --- | 30.00 | 0.38 | --- | 0.23 |
| 1.315 | 33.40 | 48.26 | --- | 42.16 | 88.90 | 82.55 | 38.89 | 35.00 | 2.38 | 2.38 | 42.77 | --- | 37.80 | 0.57 | --- | 0.38 |
| 1.660 | 42.16 | 55.88 | --- | 52.17 | 95.25 | 88.90 | 47.63 | 43.76 | 3.18 | 3.18 | 50.95 | --- | 47.17 | 0.68 | --- | 0.59 |
| 1.900 | 48.26 | 63.50 | --- | 55.88 | 98.42 | 95.25 | 54.76 | 49.86 | 3.18 | 1.59 | 58.34 | --- | 52.07 | 0.84 | --- | 0.56 |
| 2 3/8 | 60.32 | 77.80 | 73.91 | 73.02 | 123.82 | 107.95 | 67.46 | 61.93 | 3.97 | 4.76 | 71.83 | 69.90 | 66.68 | 1.55 | 1.07 | 1.28 |
| 2 7/8 | 73.02 | 93.17 | 87.88 | 88.90 | 133.35 | 130.18 | 80.16 | 74.63 | 5.56 | 4.76 | 85.88 | 83.24 | 80.98 | 2.40 | 1.55 | 2.34 |
| 3 1/2 | 88.90 | 114.30 | 106.17 | 107.95 | 146.05 | 142.88 | 96.85 | 90.50 | 6.35 | 4.76 | 104.78 | 100.71 | 98.42 | 4.10 | 2.38 | 3.71 |
| 4 | 101.60 | 127.00 | --- | 120.65 | 152.40 | 146.05 | 109.55 | 103.20 | 6.35 | 4.76 | 117.48 | --- | 111.12 | 4.82 | --- | 4.35 |
| 4 1/2 | 114.30 | 141.30 | --- | 132.08 | 158.75 | 155.58 | 122.25 | 115.90 | 6.35 | 4.76 | 130.96 | --- | 123.19 | 6.05 | --- | 4.89 |
Our Services & Strength
The company has a sound system of import and export service, a wide range of commodity information network , partners around theworld,and we have rich experience in international trade. We create the best service in the business philosophy of guidance through the unremitting efforts of all staff, has made remarkable achievements.
The most reasonable price, best service, best quality products for the purpose of customer demand, we are willing to cooperatewith all my colleagues at home and abroad to create a better future .
