ENVIRONMENTAL
STAINLESS STEEL
CENTRALIZERS

DEAN BENNETT SUPPLY
DENVER, COLORADO
1-800-621-4291
Smart Phone Dialable

STAINLESS STEEL - WORM GEAR
MONITORING PIPE CENTRALIZERS

Download Monitoring Pipe Centralizers Page 88

These all stainless steel centralizers center your monitoring well pipe, screen, or piezometers in the well bore hole. They help stabilize your pipe, eliminating the danger of off-center or wavering well installations. It is real important to maintain a straight well pipe when using a sample bailer or probe. Using centralizers will improve your silica sand pack and bentonite seal installations. Worm gear style centralizers made from stainless steel SAE HD clamps assembled to stainless steel straps make for an easy install. The worm gear allows installation torque values of 90 to 100 inch pounds of torque. The worm gear design requires less room for clearance, and therefore minimizes obstruction allowing better grouting and sand pack placement.
Nominal Pipe Size Price Each Pipe OD Size Max Hole Size

 The sizes marked with an * are normally stocked in Denver for immediate shipment.
All other sizes will be shipped direct from the factory, with actual freight charges added to your cost.
 1" $ 33.50 1.315" OD Pipe 11"
1-1/4" $ 33.50 1.660" OD Pipe 11"
1-1/2" $ 33.50 1.900" OD Pipe  12"
2" $ 28.50* 2.375" OD Pipe 12"
2-1/2" $ 32.75 2..875" OD Pipe 12"
 3" $ 32.75 3.500" OD Pipe 13"
4" $ 29.25* 4.500" OD Pipe 16"
4-1/2" $ 38.50 5.000" OD Pipe 16.5"
5" $ 38.50 5.563" OD Pipe 17"
6" $ 41.50 6.625" OD Pipe 18"
6" HD $ 48.25 6.625" OD Pipe 20"
8" $ 53.75 8.625" OD Pipe 22"
8" HD $ 67.25 8.625" OD Pipe 22"
10" $ 60.00 10.750" OD Pipe 24"
10" HD $ 75.75 10.750" OD Pipe 24"
12" $ 65.25 12.750" OD Pipe 26"
14" HD $ 90.00 14.000" OD Pipe 28"
16" HD $ 94.00 16.000" OD Pipe 30"
Stainless Steel Centralizers are made from the following materials:
#304 Stainless Steel Coiled Strip Steel make up the worm drive clamp band and the housing for the screw.
#410 Stainless is used for the High Strength Worm Drive Clamp Screw.
#301 Stainless is used for the centralizer straps.

STEEL CASING   HINGE-TYPE
HEAVY DUTY CENTRALIZERS

These centralizers feature channel formed steel collar rings with hinges placed within the channel to eliminate hinge damage. This all steel construction assures that the hinge will not rupture while casing is being run regardless of hole direction and irregularities and that the centralizer will provide effective centering down hole. Bow springs are made of 1-1/4" x 3/16" #1095 spring steel. The split collars and narrow bow springs provide maximum centralizing of the casing, and minimum obstruction to annular flow. These all steel centralizers are normally powder blue paint coated; however they can be shipped unpainted bare metal if you prefer. Be sure to specify the hole size when ordering.
Steel casing centralizers are not a Denver stock item. They will be shipped direct from the factory, with actual freight charges added to your cost. Part#250xxxx

Nominal Pipe Size Price Each Pipe OD Size
2" $   43.75 for 2-3/8" OD Pipe
2-1/2" $   43.75 for 2-7/8" OD Pipe
3" $   43.75 for 3-1/2" OD Pipe
4" $   49.50 for 4-1/2" OD Pipe
5" $   51.50 for 5-1/2" OD Pipe
6" $   57.00 for 6-5/8" OD Pipe
7" $   59.00 for 7" OD Pipe
8" $   70.50 for 8-3/4" OD Pipe
9" $   74.25 for 9-5/8" OD Pipe
10" $   89.50 for 10-3/4" OD Pipe
11" $   93.25 for 11-3/4" OD Pipe
12" $   99.00 for 12-3/4" OD Pipe
13" $ 103.00 for 13-3/8" OD Pipe
16" $ 122.00 for 16" OD Pipe
18" $ 133.00 for 18-5/8" OD Pipe
20" $ 150.00 for 20" OD Pipe
22" $ 179.00 for 22" OD Pipe
24" $ 179.00 for 24" OD Pipe

When you are unable to weld stops, or use a coupling on your pipe to install centralizers or cementing baskets, we can special order Hinged Rings. Use 2 Hinged Rings per centralizer or cementing basket, one below and one above.

MONITORING SUPPLIES INDEX

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Page effective December 10, 2010