Bow spring centralizer

Super-strength spring steel is applied to centralize casing in wellbore,and improve cementing quality.

Features:
1、Every attachment is pressed into shape by moulding instead of welding and rivet.
2、3-section structure for easy transport.
3、Starting force and restoring force conform to API standards.
4、Easy-and-convenient to use.
5、Alternative turbulence plates can effectively improve displacement efficiency.

Specification Number of slice Max OD ID Length
（㎜） （㎜） （㎜）
YDFJ—41/2"×6" 4 160  116 450/575
YDFJ—4 1/2"×6 1/4" 4 167 116 450/575
YDFJ—4 1/2"×7 7/8" 4 210 116 450/575
YDFJ—4 1/2"×8 1/2" 4 230 116 450/575
YDFJ—5"×6" 4 160 128 450/540
YDFJ—5"×6 3/4" 4 180 128 450/575
YDFJ—5"×7 7/8" 4 210 128 450/575
YDFJ—5 1/2"×7 7/8" 5 210 140 450/575
YDFJ—5 1/2"×8 1/2" 5 216/245 140 450/575
YDFJ—5 1/2"×8 3/4" 5 222/250 140 450/575
YDFJ—5 1/2"×9 7/8" 5 251/264 140 450/575
YDFJ—51/2"×91/2" 5 242/264 140 450/575
YDFJ—7"×8 1/2" 6 216/230 179 450/575
YDFJ—7"×8 3/4" 6 222/233 179 450/575
YDFJ—7"×9 1/2" 6 242/264 179 450/575
YDFJ—7"×9 7/8" 6 251/264 179 550/650
YDFJ—9 5/8"×12 1/4" 8 346 245 550/650
YDFJ—9 5/8"×13 3/8" 8 346/352 245 550/650
YDFJ—9 5/8"×12 13/16" 8 378 245 550/650
YDFJ—10 3/4"×15 1/2" 9 405 275 550/650
YDFJ—φ273.05×φ374 9 374 275 550/650
YDFJ—13 3/8"×17 1/2" 10 440/446 342 550/650
YDFJ—13 5/8"×17 1/2" 11 440/466 342 550/650
YDFJ—20"×26" 17 696 510 550/610/65