久久精品无码人妻无码av,男女久久久国产一区二区三区,日本亚洲欧洲免费无码,亚洲香蕉成人av网站在线观看

規(guī)格型號(hào)

卡持管徑 (in)

額定載荷（t）

錐度鉆桿

With 18°Taper

套管

Casing

鉆鋌

Collar

油管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