Model

Size (in)

Rated Capacity（t）

With 18°Taper

Casing

Collar

Tubing

DDZH-250(TD)

2-3/8~5

4-1/2~5

3-1/8~5-1/4

2-3/8~4-1/2

250

DDZH-350(TD)

2-3/8~6-5/8

4-1/2~7

3-1/8~6-3/4

2-3/8~5

350

DDZH-500

2-3/8~6-5/8

4-1/2~7

3-1/2~6-3/4

/

500

CDZH-500

3-1/2~6-5/8

4-1/2~9-5/8

4-3/4~9-3/4

2-3/8~4-1/2

500