| Customization: | Available |
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| After-sales Service: | Yes |
| Warranty: | 1 Year |
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Features
Casing size O.D.: 4-1/2 ~ 20 in (114~ 508 mm)
Stop collar size O.D.: 131 ~ 540 mm
Stop collar height: 50 ~ 210 mm
| Specification | Inner Diameter (mm) | Height(mm) | Thickness(mm) |
| 4 1/2" | 116 | 50 | 6 |
| 5 1/2" | 142 | 50 | 6 |
| 7" | 181 | 50 | 6 |
| 7 5/8" | 197 | 50 | 6 |
| 7 7/8" | 203 | 50 | 6 |
| 9 5/8" | 247 | 50 | 8 |
| 10 3/4" | 276 | 60 | 8 |
| 13 3/8" | 342 | 60 | 8 |
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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