Basic Info.
Manufacturing Process
Casting
Surface Treatment
Spray-Paint
Application
Oil & Gas Well
Thread
Nu, EU, Stc, Ltc, Btc, etc.
Steel Grade
J55, C75, L80, N80, C95, P110, etc.
Transport Package
Standard Export Packing
Specification
3/4 - 20 inch
Product Description
Product Description
Couplings are short lengths of pipe used to connect two joints of tubing or casing, which are painted with color codes on their external surface to indicate their grades.Tubing CouplingTubing Coupling can be widely used in cold and hot water supply, heating supply, fire protection, medicinal gas, industrial petroleum pipeline system etc. It has already replaced welding fittings in most Europe countries, Asia countries, America, Australia and some other countries.1. Standard: API2. Size: 2 3/8" --- 20"3. Steel grade: J55, C75, L80, N80, C95, P110, etc.4. Thread: NU, EU, STC, LTC and BTC5. Classification: Upset, non Upset, external upset
Casing couplingA short length of pipe used to connect two joints of casing. A casing coupling has internal threads (female thread form) machined to match the external threads (male thread form) of the long joints of casing. The two joints of casing are threaded into opposite ends of the casing coupling.1. Standard: API2. Size: 4 1/2" --- 20"3. Steel grade: H-40, J-55, K-55, C-75, L-80, N-80, C-95, AS-95, P-110, L80-13CR4. Thread: STC, LTC, BTC
Polished rod couplingPolished rod couplings are designed for connecting of the polished rod to the top rod of the string. Contrary to rod couplings, polished rod couplings have a female cone that eliminates the coupling twist-off in the course of operation.1. Standard: API Spec 11B2. Materials: AISI5140 (high quality carbon steel)3. Coat thickness: 0.010in-0.020in4. Coat Material: Ni60A Alloy Coating5. Classification: full size and slim hole6. Coupling diameter: 5/8"; 3/4"; 7/8"; 1"; 1-1/8"7. New product: Two-way globoidal protection sucker rod coupling; Full size sucker rod coupling with big chamfer
Sucker Rod CouplingCouplings are manufactured from quenched and tempered micro alloyed steels. API couplings are furnished in two classes: Class T and Class SM (Spray Metal). The later has a superficial hardening.One sucker rod coupling must be processed by a few fabrication procedures, such as, Blanking, drilling hole, boring hole, milling, thread tapping, and so on. At the last step, do the surface treatment. The surface treatment includes black coating, phosphating or per the customers requirement. Besides, it has good anticorrosion and anti-friction property.
Product Parameters
Parameters of Tubing Coupling
Descriptions and size | Type of Thread | O.D*L | Weight |
(mm) | (kg) |
Tubing coupling | 2-3/8" | NUE | 73.02*107.95 | 1.28 |
2-3/8" | EUE | 77.80*132.82 | 1.55 |
2-7/8" | NUE | 88.90*130.18 | 2.34 |
2-7/8" | EUE | 93.17*133.35 | 2.4 |
3-1/2" | NUE | 107.95*142.88 | 3.71 |
3-1/2" | EUE | 114.30*146.05 | 4.1 |
4" | NUE | 120.65*146.05 | 4.35 |
4" | EUE | 127.00*152.40 | 4.82 |
4-1/2" | NUE | 132.08*155.58 | 4.89 |
4-1/2" | EUE | 141.30*158.75 | 6.05 |
Parameters of Casing CouplingDescriptions and size | Type of Thread | O.D*L | Weight |
(mm) | (kg) |
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 | 194.46*228.60 | 10.83 |
7" | BTC | 194.46*254.00 | 10.54 |
7-5/8" | STC | 215.90*190.50 | 12.3 |
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 | 50.1 |
Parameters of Polished Rod CouplingSize(in) | Coupling O.D W(mm) | Length L(mm) | Thread D.(in) | Vanish Cone | Hardness(HRA) |
| (+0.13,-0.25) | (+1.57,-0.00) | | |
5/8" | 38.1 | 101.6 | 15/16" | 9O | 56-62 |
3/4" | 41.28 | | 1-1/16" | | |
7/8" | 46 | | 1-3/16" | | |
1" | 55.6 | | 1-3/8" | | |
1-1/8" | 60.33 | 114.3 | 1-9/16" | | |
Parameters of Sucker Rod CouplingType | grade | O.D(mm) | Minimum lengh(mm) | Hardness | Weight(kg) | Standard |
reference |
3/4" | 19-T | 41.05~41.43 | 101.6~103.17 | 56-62HRA | 0.65 | API 11B |
7/8" | 22-T | 45.75~46.13 | 45.75~46.13 | 56-62HRA | 0.8 | API 11B |
1" | 25-T | 55.35~55.73 | 55.35~55.73 | 12-23HRA | 1.15 | API 11B |
Company Profile
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!
Detailed Photos
API Drilling Tools Casing & Tubing Couplings for Petroleum Pipes & Sucker Rods
Address:
Zhongyuan Advertising Industrial Park,Zhengzhou High-tech Industrial Development Zone,Henan,China
Business Type:
Trading Company
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Service, Transportation
Management System Certification:
ISO 9001
Company Introduction:
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in central China, is a professional supplier of oilfield equipment and tools such as casing centralizers, tubing centralizers, drill pipe centralizers, sucker rod & polised rod centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collars, sucker rods, polished rods, casing & tubing & rod couplings & crossovers, etc.
Our factories have more than 15 years experiences of manufacturing oilfield tools. We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry. We are professional in many kinds of casing centralizers, float collars and float shoes, cementing plugs, cement baskets, cementing heads, stage collars, sucker rods, drill pipes, drill collars, etc. And we got ISO9001: 2015 Certificate.
Our team has more than 10 years experiences of manufacturing and exporting in oil & gas industry, and our products are well sold in Mideast, North America, Latin America, Central Asia, Southeast Asia, Russia, North Africa, etc.
We are committed to providing high-quality and cost-effective products and services to our customers.
Let′s join hands and work together to create a better future!