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Product Details

Parameter	Specification
Surface Casing Size (in)	20、13-3/8/9-5/8
Working Pressure of Top Flange (MPa)	2、3、5、10
Nominal Size of Top Flange (in)	21-1/4、13-5/8、11、7-1/16
Nominal Size of Test Outlet (in)	2-1/16、2-9/16、3-1/8

(1) Bottom slip connection

1. Use WD slips to connect the surface casing;

2. Adopt BT type secondary seal structure;

3. No need to accurately calculate the running depth of the casing;

4. Not affected by environmental and climatic conditions;

5. Easy to install, fast, safe and reliable.

(2) Threaded connection at the bottom

1. The bottom can be connected to the surface casing with various specifications of threads, such as: CSG, LCSG, BCSG, TM, etc .;

2. The installation is convenient, rapid, safe and reliable.

(3) Bottom welding connection

1. The bottom is connected to the surface casing by sleeve welding;

2. Welding annulus is designed with pressure test holes to verify the welding effect.

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Bottom casing head

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