Cold drawn size available on Mold( other size can do Customized)

45*30

48*31.75

50*40

55*45

60*50

60*45

63*50

63*55

70*50

70*57

73*63

75*50

75*55

75*60

75*65

80*65

80*70

90*75

94*80

95*80

98*85

100*85

105*90

111*95

112*95

116*100

118*100

123*105

124*110

128*110

134*115

140*120

141*120

146*125

152*130

154*130

158*135

160*135

165*140

176*150

Material: 25Mn( STKM13CT) 16Mn(Q345B Q345D, St52 ) 10# (St37.2) 20# (1020 S20C CK20 St45) 45#(ck45 S45C)  Standard: GBT3639 Din2391  En10305

OD

ID

TOLERANCE

OD

ID

WT DEVIATION

OVALITY

40-74

30-65

+-0.1MM

-0.3  -0.5

<=0.5

<=0.1

74-98

65-85

+-0.1MM

-0.4  -0.6

<=0.5

<=0.15

100-116

85-100

+-0.2MM

-0.4  -0.6

<=0.6

<=0.15

124-134

110-115

+-0.2MM

-0.6  -0.8

<=0.6

<=0.20

140-158

120-135

+-0.2MM

-0.7  -0.9

<=0.8

<=0.20

165-176

140-150

+-0.2MM

-0.7  -0.9

<=0.8

<=0.20

188-203

160-180

+-0.2MM

-0.7  -0.9

<=0.8

<=0.20

OD(mm)

ID (mm)

Tolerance

OD (mm)

ID (mm)

Wall thickness deviation (mm)

Ovality (mm)

Curvature(mm/m)

40-74

30-65

±.01

-0.3,-0.5

≤0.5

≤0.1

0.3

74-98

65-85

±.01

-0.4,-0.6

≤0.5

≤0.15

0.3

100-116

85-100

±.02

-0.4,-0.6

≤0.6

≤0.15

0.3

124-134

110-115

±.02

-0.6,-0.8

≤0.6

≤0.20

0.3

140-158

120-135

±.02

-0.7,-0.9

≤0.8

≤0.20

0.3

165-176

140-150

±.02

-0.7,-0.9

≤0.8

≤0.20

0.3

188-203

160-180

±.02

-0.7,-0.9 Honed

≤0.8

≤0.20

0.3

No.

Inside diameter(mm)

ID machining allowance(mm)

1

50-80

0.5-0.8

2

81-125

0.7-1.1

3

125-200

0.9-1.2

4

200-250

1-1.5

Other dimension can be customized

No.

ID Min.(mm)

Length(mm)

1

50

700—2000

2

63

700—3000

3

80

700—4000

4

>90

700—6000

Other dimension can be customized