Puyang Zhongshi Group Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 1000sets/month |
| Delivery Time | 15 work days |
| Packaging Details | Metal or wooden case |
| Type | Bow Type Spring Centralizer |
| Material | Carbon Steel |
| central multimedia | central machinery parts |
| End Collar Type | Plain, Threaded, Flush |
| Mandrel Thickness | 3/8'' to 1/2'' |
| Size | 4-1/2 |
| ID | 2.5 |
| Length | 10-20 |
| OD | 4.5 |
| Product Name | Bow Spring Centralizer |
| Surface Treatment | Galvanized |
| Weight | 2.5 |
| Brand Name | ZS |
| Model Number | 5-1/2"X8-1/2"to20"X26" |
| Certification | API 11AX |
| Place of Origin | China,Henan |
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Product Specification
| Payment Terms | T/T | Supply Ability | 1000sets/month |
| Delivery Time | 15 work days | Packaging Details | Metal or wooden case |
| Type | Bow Type Spring Centralizer | Material | Carbon Steel |
| central multimedia | central machinery parts | End Collar Type | Plain, Threaded, Flush |
| Mandrel Thickness | 3/8'' to 1/2'' | Size | 4-1/2 |
| ID | 2.5 | Length | 10-20 |
| OD | 4.5 | Product Name | Bow Spring Centralizer |
| Surface Treatment | Galvanized | Weight | 2.5 |
| Brand Name | ZS | Model Number | 5-1/2"X8-1/2"to20"X26" |
| Certification | API 11AX | Place of Origin | China,Henan |
Introducing the API Standard Single Bow Spring Centralizer for Casings: These centralizers are crafted from premium alloy steel, ensuring exceptional quality. Through a meticulous hot-forming process in a controlled heat treatment plant, the centralizers achieve uniform hardness throughout. They comply with the specifications and performance criteria outlined in API Spec 10D.
The woven centralizer is connected using pins during operation, while the unfolded centralizers can be conveniently stacked flat for storage and transportation purposes. Key characteristics of the API Standard Single Bow Spring Centralizer for Casings include:
1) Bow springs made from heat-treated spring steel, guaranteeing consistent and proper spring characteristics.
2) End collar hinges folded inward to minimize collar stretch that may occur when encountering tapers in certain pipe connections.
3) Stamped reinforcing rib on the end collar, reinforcing and preserving its round configuration during transport.
4) Availability of various spring bow heights to accommodate different casing-to-hole configurations.
5) Option for centralizers with built-in stop devices and customization for uncommon sizes upon request.
These centralizers are designed to enhance the casing centralization process and offer reliable performance in oil well operations. They meet the stringent requirements laid out by API standards for optimal casing positioning and cementing operations.
| Model (in) | Hooping In-Dia. (mm) | Hooping thickness (mm) | Total length (mm) | Max.Out-Di (mm) | Amount of spring (mm) |
| 5-1/2" x 8-1/2" | 142-148 | 3-5 | 650±50 | 225±5 | 5 |
| 7" x 9-5/8" | 181-186 | 3-5 | 650±50 | 255±5 | 6 |
| 7" x 8-1/2" | 181-186 | 3-5 | 650±50 | 235±5 | 6 |
| 8-5/8 x 12-1/4" | 223-228 | 3-5 | 650±50 | 330±5 | 8 |
| 9-5/8 x 12-1/4" | 250-255 | 3-5 | 650±50 | 330±5 | 8 |
| 10-3/4 x 12-1/4" | 274-276 | 3-5 | 650±50 | 330±5 | 9 |
| 13-3/8"x17-1/2" | 342-347 | 3-5 | 650±50 | 450±5 | 11 |
| 18-5/8"x24" | 475-477 | 3-5 | 600±50 | 610±5 | 12 |
| 20"x26" | 509-511 | 3-5 | 600±50 | 660±5 | 12 |
Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1997
Total Annual:
5 million-10 million
Employee Number:
570~600
Ecer Certification：
Verified Supplier
Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars. We have competitive price of o... Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars. We have competitive price of o...
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