| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 Year |
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Polished rod is designed for connecting sucker rod strings to beam pumping units via polished rod packing. The rods are round cross-section bars. We provide three types of polished rods: normal polished rod, polished rod-metal spray and polished rod-upset on one end.
The work-hardened flank provides increased surface tensile, yield and shear strength. Due to the pressure deformation, a residual compressive stress system builds up at the thread root, which counteracts tensile loading. When compared to cut or burnished threads, the load capacity and corrosion and fatigue resistance of the rolled thread is significantly increased.
Polished rods with the same exterior threads at both ends (cone angle=9°), including three specifications: 1-1/8", 1-1/4" and1-1/2". End upset polished rods including three specifications: 1", 1-1/8" and 1-1/4". The upset ends are the same with those of sucker rods. In application, the upset ends are connected with the couplings of sucker rods.
Advantages
1. We are equipped with imported spray metal machines to make sure the even coating of spray metal polished rods.
2. This kind of polished rods enjoys extended service life in highly corrosive oil wells. Besides, seven-layer packaging can also extend the stock period and protect the polished rods from damage during the delivery.
3..High tensile strength.
4..Can be used with sucker rod and hollow sucker rod.
5.Corrosion resistant.
6.Solid and hollow structure for different requirements.
| External diameter (+0.127,-0.254) |
Pin thread nominal value (mm) | Matched sucker rod (mm) | Mechanical properties | Coating properties | Surface roughness |
| 1 1/8(28.6) | 15/16(23.8)PR 1 1/16(27)PR |
5/8(15.9) 3/4(19.1) |
1.carbon steel:620MPa≤ tensile strength≤827MPa 2.alloy steel:655MPa≤ tensile strength≤1100MPa |
coating hardness ≥480HV200 coating thickness 0.254~0.508mm |
1.conventional polished rod≤0.4μm 2.sprayed polished rod≤0.8μm |
| 1 1/4(31.8) | 1 3/16(30.2)PR | 7/8(22.2) | |||
| 1 1/2(38.1) | 1 3/8(34.9)PR | 1(25.4) |
| Thickness of Coating | Hardness of Coating | Chemical Composition of Coating | |
| Elements | Range | ||
| 0.008in to 0.020in (0.20mm to 0.51mm) |
≥ 480 HV200 | Carbon | 0.50 / 1.00 |
| Silicon | 3.50 / 5.50 | ||
| Phosphorus | 0.00 / 0.02 | ||
| Sulfur | 0.00 / 0.02 | ||
| Chromium | 12.00 / 18.00 | ||
| Boron | 2.50 / 4.50 | ||
| Iron | 3.00 / 5.50 | ||
| Cobalt | 0.00 / 0.10 | ||
| Titanium | 0.00 / 0.05 | ||
| Aluminum | 0.00 / 0.05 | ||
| Zirconium | 0.00 / 0.05 | ||
| Nickel | Remainder | ||
Dongying Zhao Xin Industry and Trade Co., Ltd. was established in 2001. Our company is located in Dongying city which has the second largest Oilfield (Shengli Oilfield) in China. We are a company, which conducts scientific research, development, manufacture, sale and after sale service, is one enterprise for oilfield tool and equipment manufacturer. We cover an area of more than 9000 square meters which manufacture different oilfield products. Our main products include drilling equipment, oil production equipment, oil well service tools. Such as sucker rod, drill pipe, OCTG products, bridge plug. Currently, our products are already exported to North America, South America, Middle East, Middle Aisa, India and other countries and regions. The warranty period of all our products is 18 months.
We are an I S O 9 0 0 1, I S O 1 4 0 0 1, I S O 4 5 0 0 1,API certified company and have all the quality systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure that all products match the quality & reliability Standards. We also have an independent measurement and inspection department, the inspection and measuring tools are fully equipped, we control each process to ensure that all products are qualified.
Dongying Zhaoxin Industry and Trade Co.,Ltd with perfect attitude, product and service, is going to make further development together with customers at home and abroad .
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