Seamless steel tube

Oil pump pump barrel with cold drawn precision steel pipe

Oil pump pump barrel with cold drawn precision steel pipe

Oil pump pump barrel with cold drawn precision steel pipe

material:st45(20#) ck45(45#)
hardness:st45 HB:165-200 ck45 HB:207-240
length:≤11m
inner hole roughness:Ra≤1.6um

Hardness

Nominal diameter Outer diameter(mm) inner diameter(mm) Inside diameter deviation Inner hole roundness
Chrome plated 28 41.28 28.58 long≤80m length≥8m
32

44.45

47.75

31.75

+0.03

-0.05

-0.05

-0.15

0.03
38

50.80

54.10

38.10
44

57.10

60.45

44.45
57

69.85

73.15

57.15
70

82.55

85.85

69.85    
83

95.25

98.55

82.55

-0.03

-0.15

-0.15

-0.25

0.05
95 111.25 95.25
108 123.95 107.95
permeability 32 44.45 31.75

-0.15

-0.25

  0.05
38 50.80 38.10
44 57.15 44.45
57 69.85 57.15
70 82.55 69.85

 

  :2016-06-02 22:27:46  【】  【