型  号

Type

外 径

O.D.(mm)

耐回压

Bearing Back Pressure

连  接   扣   型

Connection

连接钻铤规格

Drill  Pipe (in)

ZFF127

φ127

35MPa    70MPa

NC38×NC38

5″

ZFF159

φ159

35MPa    70MPa

NC46×NC46

6  1/4″

ZFF165

φ165

35MPa    70MPa

NC50×NC50

6  1/2″

ZFF178

φ178

35MPa    70MPa

NC50×NC50

7″

ZFF203

φ203

35MPa    70MPa

6 5/8REG×6 5/8REG

7″

ZFF228.6

φ228.6

35MPa    70MPa

7 5/8REG×7 5/8REG

9″

ZFF241

φ241

35MPa    70MPa

7 5/8REG×7 5/8REG

9  1/2″