steel&steel pipe&Cylinder tube

Item

diamter & thickness tolerance, %

diameter tolerance

thickness tolerance

Hot-rolled pipe

± 1.0

+15

10

cold drawing pipe

± 0.75

+12.5

10

diameter

thickness

60

3.5

70

3.5

89

4.5

108

4.0 4.5 5.0 5.5 6.0

121

4.5

127

4.5 7.5

140 139.7

4.5 5.0 8.0

159

5.0 5.5

165

5.0

180

7.0 8.0

219

6.3 6.5 7.0

229

6.3 7.0

232

6.0

267

7.0

273

7.5 8.2 9.0