3/4" Sucker Rod Coupling Grade KD for Oilfield Production Equipment - 41.28mm OD, 56-62 HRA Hardness
Price:
USD2-20/pc
MOQ:
100 pc
Delivery Time:
25-30 work days
Product Description
Sucker Rod Coupling Overview
Sucker rod couplings are precision-engineered components designed for connecting sucker rods, polished rods, and sinker bars in oilfield production equipment. These couplings ensure reliable performance in demanding downhole environments.
Product Types and Specifications
Available Types
• Sucker Rod Couplings
• Polished Rod Couplings
• Sub-Couplings
Material and Classification
All coupling types are available in two classes: Class T (through-hardened) and Class SM (sprayed metal). Manufactured from high-quality carbon steel and alloy steel materials to ensure durability and performance.
Available Sizes
Standard specifications include 5/8", 3/4", 7/8", 1", and 1 1/8" models to accommodate various operational requirements.
Technical Specifications by Grade
| Product | Type | Grade | Steel (AISI) |
|---|---|---|---|
| Coupling | Sucker Rod Couplings Sub Couplings Polished Rod Connections |
T | 5140, 1045 |
| SM | 5140, 1045 | ||
| K | 4620, 4720 | ||
| KD | 4330 | ||
| UHS | 4142, 4130, 4330 |
Full Size Coupling Dimensions
| Size (in) | Coupling O.D W (mm) | Length L (mm) | Thread D. (in) | Length of Wrench Square (mm) | Hardness (HRA) |
|---|---|---|---|---|---|
| 5/8" | 38.10 | 101.6 | 15/16" | 31.8 | 56-62 |
| 3/4" | 41.28 | 101.6 | 1-1/16" | 31.8 | 56-62 |
| 7/8" | 46.00 | 101.6 | 1-3/16" | 31.8 | 56-62 |
| 1" | 55.60 | 101.6 | 1-3/8" | 38.1 | 56-62 |
| 1-1/8" | 60.33 | 114.3 | 1-9/16" | 38.1 | 56-62 |
Slim Hole Coupling Dimensions
| Size (in) | Coupling O.D W (mm) | Length L (mm) | Thread D. (in) | Length of Wrench Square (mm) | Hardness (HRA) |
|---|---|---|---|---|---|
| 5/8" | 31.75 | 101.6 | 15/16" | 31.8 | 56-62 |
| 3/4" | 38.10 | 101.6 | 1-1/16" | 31.8 | 56-62 |
| 7/8" | 41.30 | 101.6 | 1-3/16" | 31.8 | 56-62 |
| 1" | 50.80 | 101.6 | 1-3/8" | 38.1 | 56-62 |
Manufacturing Process
Coupling blanks are precision-formed or machined to exact size and tolerance specifications. Threads are created using cold-forming rolled thread taps for superior strength and durability. All couplings receive specialized coatings for anti-galling properties and enhanced lubrication performance.
Contact Information
Dongying OilMan Machinery Equipment Co.
North Two Road, Dongying City, Shandong Province, China
Mobile/WhatsApp/WeChat: +86 13475294399
Email: christal@oilmancn.com
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Company
Dongying Oilman Machinery Equipment Co.,Ltd.
Location
www.oilmanchina.com
Contact Person
Christal