型号
  Model

外径   O.D.mm(inch)

内径I.D.mm(inch)

螺纹类型Connection
  API

工作压力
  Working Pressure

QK89-T30

89
  (3 1/2)

30
  (1 3/16)

NC26

35Mpa,70Mpa

QK119-T50

119
  (4 3/8)

50.8
  (2)

NC31
  2-3/8 EUE

35Mpa,70Mpa

QK135-T62

135
  (5  5/16)

62
  (7 5/16)

NC38
  2-7/8 EUE

35Mpa,70Mpa

QK140-T62

140
  (5-1/2)

62
  (7 5/16)

NC40
  2-7/8 EUE

35Mpa,70Mpa

QK159-T62

159(6 1/4)

62
  (7 5/16)

NC46

35Mpa,70Mpa

QK168-T76

168
  (6 5/8)

76
  (3)

NC50
  3-1/2 EUE

35Mpa,70Mpa

QK178-T76

178
  (7)

76
  (3)

5-1/2 FH
  3-1/2 EUE

35Mpa,70Mpa

QK190-T82

190
  (7 1/2)

82
  (3 1/4)

5-1/2FH
  4-1/2EUE

35Mpa,70Mpa

QK203-T101

203(8)

101
  (4)

6-5/8 REG
  4-1/2 EUE

35Mpa,70Mpa