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Top Flange Size (inches)	Working Pressure (psi)	Casing Size (inches)	Outlet
9"	2000	7"	2" LP
9"	3000	7"	2" LP
9"	2000	7-5/8"	2" LP
9"	3000	7-5/8"	2" LP
9"	5000	7-5/8"	2" LP
9"	2000	8-5/8"	2" LP
9"	3000	8-5/8"	2" LP
9"	5000	8-5/8"	2" LP
11"	2000	8-5/8"	2" LP
11"	3000	8-5/8"	2" LP
11"	5000	8-5/8"	2" LP
11"	2000	9-5/8"	2" LP
11"	3000	9-5/8"	2" LP
11"	5000	9-5/8"	2" LP
11"	2000	10-3/4"	2" LP
11"	3000	10-3/4"	2" LP
11"	5000	10-3/4"	2" LP
13-5/8"	2000	11-3/4"	2" LP
13-5/8"	3000	11-3/4"	2" LP
13-5/8"	2000	13-3/8"	2" LP
13-5/8"	3000	13-3/8"	2" LP
13-5/8"	5000	13-3/8"	2" LP
16-3/4"	2000	16"	2" LP
16-3/4"	3000	16"	2" LP
21-1/4"	2000	20"	2" LP

Casing head assembly consists of casing head, casing hanger, by pass valve and other accessories parts. It can meet the requirement of sealing of annular space between casing hanger and casing, and can meet the requirement of casing supporting as well; it can resist to the corrosion of all kinds of medium.Hanger for casing head and casing spool is designed with 45°shoulder and straight seat, with good load bearing capacity. Casing head can be designed into integral or split structure according to requirement. The connection type between casing head and surface casing can be weld type, thread type and slip type. The corresponding casing hanger structure types are slip type and thread (mandrel) type. Side outlet connection type can be thread type, Studded flange type and flange type. The bottom of casing head and casing spool has secondary sealing and sealing test connection point for casing.