Features: 
1. Material: 65Mn steel, with good elasticity. 
2. Standard: API 10D
3. Specifications: 4 1/2''---20'' + any customed size.  
4. High Restoring Force: restoring force about 198% higher than API standard.
5. Two type single piece centralizer is avaliable. One is with semi-rigid features, with shuttle corner. like the following picture. 

Description: 
1. the single piece centralizers are with highest restoring force, zero start force, zero running force.
2. Application: to position the casing in the center of the wellbore in vertical deviated and horizontal wells.
3.the single piece casing centralizers are able to minimize gas channelling.
4. the single piece centralizers are one piece construction in special high strength steel.
5. the single piece centralizers are within excellent hardness and spring action. 
6. this centralizer undergoes a special Iron Phosphate coating process to prevent it from rust and coated with special Polyester Powder.

Parameters:

Model(in)	Hooping In-Dia.(mm)	Hooping  Thickness  (mm)	Hooping height(mm)	Total Length(mm)	Max. Out-Dia.(mm)	Spring  Pieces
5-1/2*8-1/2	142-148	3-5	90-120	650±50	225±5	5
7*9-5/8	181-186	3-5	90-120	650±50	255±5	6
7*8-1/2	181-186	3-5	90-120	650±50	235±5	6
8-5/8*12-1/4	223-228	3-5	90-120	650±50	330±5	8
9-5/8*12-1/4	250-255	3-5	90-120	650±50	330±5	8
10-3/4*12-1/4	274-276	3-5	90-120	650±50	330±5	9
13-3/8*17-1/2	342-347	3-5	90-120	650±50	450±5	11
18-5/8*24	476±1	3-5	90-120	600±50	610±5	12
20*26	510±1	3-5	90-120	600±50	660±5	12