Buttress thread 18-5/8" Casing Pipe Collar
API 5CT 9th Casing Coupling
Raw Material: API 5CT Seamless Steel Pipe
Usage: Well Drilling Machinery
Steel Grade: J55, K55, N80-1, N80-Q, L80-1, P110;
Size:4-1/2"-20"
Type: LTC, BTC, STC
Surface Treatment: Whole phosphating, or inside phosphating and outside coating
Packing: By carton, wooden case, wooden pallet, or by requirements of customers
Shape: Tubular
Brand: KW
Color: white on surface and black inside thread
Supply Ability: 20000pcs per month
Xi'an Kingwell Oilfield Machinery Co.,Ltd is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provide complete solutions.
Now, Our tubing and casing couplings have exported to USA, Canada, Egypt, India and UEA , etc with 40 FCL contaniers per month.Now, with high quality and short supply and good service, our couplings has got good reputation home and abroad Here we got some prise as follows. 
All the detailed specification of casing couplings covering size 4-1/2"-20", grade K55, J55, P110, N80Q, L80-1, type of buttress thread, long round thread, short round thread as follow for your reference,
The API couplings for Casing Size and Specifications | ||||
Descriptions and size | Type of Thread | Weight | ||
Casing Coupling | 4-1/2" | STC | 127.00*158.75 | 5.23 |
4-1/2" | LTC | 127.00*177.80 | 4.15 | |
4-1/2" | BTC | 127.00*225.42 | 4.55 | |
5" | STC | 141.30*165.10 | 4.66 | |
5" | LTC | 141.30*196.85 | 5.75 | |
5" | BTC | 141.30*231.78 | 5.85 | |
5-1/2" | STC | 153.67*171.45 | 5.23 | |
5-1/2" | LTC | 153.67*203.20 | 6.42 | |
5-1/2" | BTC | 153.67*234.95 | 6.36 | |
6-5/8" | STC | 187.71*184.15 | 9.12 | |
6-5/8" | LTC | 187.71*222.25 | 11.34 | |
6-5/8" | BTC | 187.71*244.48 | 11.01 | |
7" | STC | 194.46*184.15 | 8.39 | |
7" | LTC | 10.83 | ||
7" | BTC | 194.46*254.00 | 10.54 | |
7-5/8" | STC | 215.90*190.50 | 12.30 | |
7-5/8" | LTC | 215.90*234.95 | 15.63 | |
7-5/8" | BTC | 215.90*263.52 | 15.82 | |
8-5/8" | STC | 244.48*196.85 | 16.23 | |
8-5/8" | LTC | 244.48*254.00 | 21.67 | |
8-5/8" | BTC | 244.48*269.88 | 20.86 | |
9-5/8" | STC | 269.88*196.85 | 18.03 | |
9-5/8" | LTC | 269.88*266.70 | 25.45 | |
9-5/8" | BTC | 269.88*269.88 | 23.16 | |
10-3/4" | STC | 298.45*203.20 | 20.78 | |
10-3/4" | BTC | 298.45*269.88 | 25.74 | |
11-3/4' | STC | 323.85*203.20 | 22.64 | |
11-3/4' | BTC | 323.85*269.88 | 28.03 | |
13-3/8" | STC | 365.12*203.20 | 25.66 | |
13-3/8" | BTC | 365.12*269.88 | 31.77 | |
16" | STC | 431.80*228.6 | 34.91 | |
16" | BTC | 431.80*269.88 | 40.28 | |
18-5/8" | STC | 508.00*228.60 | 51.01 | |
18-5/8" | BTC | 508.00*269.88 | 62.68 | |
20" | STC | 533.40*228.6 | 43.42 | |
20" | LTC | 533.4*292.10 | 57.04 | |
20" | BTC | 533.40*269.88 | 50.10 | |
Our Casing Couplings cover all API Standard scope from 4-1/2"-20" with strickly inspection, which all the goods should be checked one by one before packing. Euipped withthe world-class facilities and professional laboratory technicians, we pay more attention the quality of every products.
A well-established Quality System from Materials receipt to Products delivery ensures consistent quality at all levels of the activity. QMS Procedures & Measurements are tailored to establish high standards of Quality Assurance in the Operations. The Company maintains the 100% Traceability records as per API requirements&NACE MR 0175-2002 Standards and complies with all the legal, statutory and regulatory requirements.
Here some related tables of casing couplings to show you a technical parameter: 
Our standard export packaing is suitalble multimodal transportationby three kinds of packages: wooden pallets and irony pallet and box as bellow, 
We believe in Customer delight, achieved by the supply of Quality Products & Services and Continual Improvement in our Manufacturing Processes for timely delivery at competitive prices. We work in a professional, competitive, and cost-effective manner consistent with the Customer requirement.
Kindly let me know if you have any interest or enquiry about ourproducts. You are also always welcomed to come to our factory for a visit at your convinent time.
We will offer you a good price and show you our best service.
