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| Model | Hooping In-Dia. (mm) | Hooping thickness(mm | Total length | Max.Out-Di | Amount of spring(mm) |
| (in) | (mm) | (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 |
Bow Spring Centalize:
The Non-Welded Bow Spring Centralizers are made under the sate af art Enineering Techniques and rugged quality system. They are developed to exceed 10D specification to be used under most demanding condition. These Centralizers are designed for High Restoring Forse and Low Starting Force for centralizing the casing pipe in a Vertical, Horizontal and Deviated well.
Spring Material: High-carbon spring steel (65Mn, 60Si2Mn), SAE 5160
Coating: Zinc plating, epoxy coating, or specialized corrosion-resistant treatments
Temperature Rating: Standard: -20°C to 150°C; HPHT: up to 300°C
Pressure Rating: Up to 15,000 psi operating pressure
Starting Force: 50-300 lbs (adjustable based on well conditions)
Running Force: 100-500 lbs per centralizer
Restoring Force: 1.5-2 times the starting force
Fatigue Life: >10,000 cycles at maximum deflection
Chemical Resistance: Compatible with drilling fluids, cements, and completion chemicals
Optimized Bow Profile: Computer-designed curvature for maximum standoff
Reinforced Hinge Points: Welded or forged for enhanced durability
Smooth End Rings: Rounded edges prevent wellbore damage
Non-Slip Design: Positive locking mechanism prevents downhole movement
Description of Single Piece Bow Spring Casing Centralizer
The Single Piece Bow Spring Casing Centralizer is newly designed integrated steel flexible Centralizer used to centralize casing during the cementing stage of oil wells. Fully integrated (SLIP-ON) centralizers are manufactured in any diameter and as per customer requirements.
The blades, top and bottoms rings are made of one piece to ensure the centralizer s integrity during rig operations.
The specifications comply with Spec 10D for starting compression, running down hole and expansion force.
These centralizers offer high fatigue strength for axial forces and radial side loads on bows during tubular rotation.
More flexibility as comparison to other spring bow centralizer.
2. Features of Single Piece Bow Spring Casing Centralizer
1. Starting and restoring force confirm to Standard.
2. More flexibility as comparison to other spring bow centralizer
3. Greater centering efficiency
4. Higher Stand Off.
5. 360° wall coverage for increased load bearing area.
Available Size: 4-1/2" to 13-3/8".
1.All products are protected with thread protector
2.Wooden case, or customized packing.
3.Delivery: By truck, train, air, sea,express
Q1: What is the payment method?
A: We accept TT (Bank Transfer), Western Union, L/C.
1. For total amount under US$1000, 100% in advance.
2. For total amount above US$1000, 30% in advance, the rest before shipment.
Q2 : What is your MOQ?
A: MOQ depends on our client's needs, besides,we welcome trial order before mass-production.
Q3: What is the production cycle?
A: It varies a lot depending on product dimension,technical requirements and quantity.
We always try to meet customers' requirement by adjusting our workshop schedule.
Q4: What kind of payment terms do you accept?
A: T/T, western union, etc.
Q5: Is it possible to know how is my product going on without visiting your company?
A: We will offer a detailed products schedule and send weekly reports with digital pictures
and videos which show the machining progress.
Q6: How do I get samples to test?
A: We provide samples of most standard products. There is usually a modest fee to cover processing and shipping, which is often credited against your first bulk order. Lead time for samples is 7-10 working days.
Q7: What information do you need for a quotation?
A: Please provide:
Product name/model number from our catalog, OR a sketch/drawing of your custom requirement.
Desired material and finish.
Target quantity.
Any applicable standards or certifications required (e.g., ICC-ES report).
Destination country for accurate shipping costs.
Q8: What is the lead time for production and shipping?
A: Standard Items: 15-20 days for production after order confirmation.
Custom Items: 25-35 days after final design approval.
Shipping: Add 30-45 days for sea freight to major global ports (North America, Europe, Australia). Air freight is available for urgent needs (5-10 days).
Q9: What is your warranty and after-sales support policy?
A: We offer a comprehensive warranty against manufacturing and material defects. Our technical support team is available to assist with installation questions, load calculations, and project planning. In the rare event of a non-conformance, we work quickly to resolve the issue.
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