? ? Company Information Dongying Zhao Xin Industry and Trade Co., Ltd. is located in Dongying city, China, and professional in manufacturing various of ?oil tools for oil well used. ? ? ?? Packaging & Shipping ?Fumigation wooden cases packaged. ? Shipping: usually transport by ship ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Single Bow Spring Centralizer ? Bow?springs?made?of?spring?steel?which?has?been?heat?teated?and?hardened?tempered?to?ensure?proper?and?consistent?spring?characteristics. End?collar?hinges?are?folded?toward?inside.?This?way?will?minimize?the?collar?stretch?taht?tends?to?occur?when?centralizers?encounter?tapers,?commonly?found?in?certain?type?of?pipe?connections. A?reinforcing?rib?stamped?into?the?end?collar.?This?way?will?strengthen?and?preserve?it's?round?configuration?during?transport. Several?different?spring?bow?heights?that?are?available?to?accommodate?most?of?casing-to-hole?configuration. Centralizers?with?built-in?stop?devices?as?well?as?those?of?uncommon?sizes?are?available?based?on?request. ? ? Technical Parameters ?

Specification	In-Dia(mm)	Wall Thickness (mm)	Height(mm)	Total?height(mm)	Largest?Dia(mm)	Spring?Number
5-1/2”*8-1/2”	142-148	3-5	55	650	225	5
7”*9-5/8”	181-186	3-5	55	650	255	6
7”*8-1/2”	181-186	3-5	55	650	235	6
8-5/8”*12-1/4”	223-228	3-5	55	650	330	8
9-5/8”*12-1/4”	250-255	3-5	55	650	330	8
10-3/4”*12-1/4”	274-276	3-5	55	650	330	9
13-3/8”*17-1/2”	342-347	3-5	55	650	450	11
18-5/8”*24	476	3-5	55	600	610	12
20”*26	510	3-5	55	600	660	12

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