The economy material of 29MnCr6 was developed successfully by dalipia pipe company

which to product collapse resistance oil casing tube of Φ244. 5 mm x 10. 03 mm specification L80-1 grade. Compare with the conventional 25CrMo material

29MnCi6 material has the characteristics of low smelting cost and low heat treatment energy consumption

which can reduce production cost. By actual performance testing

compared with the conventional 25CrMo material

the L80- 1 steel grade oil casing that 29MnCr6 material producted has same tensile properties basically

the impact toughness meets APT 5 CT standard requirement

and the collapse resistance values are similar

bose have high level of collapsehigher that higher API Bull 5C2 collapse resistance standard value 60%

but meets the requirements of API 5 CT standard fully. So 29MnCr6 material can instead of 25CrMo material completely.