OCTG products for drilling, production and injection tubing.

Our integrated manufacturing processes ensure we have full control of our manufacturing routes and from which we define the optimal properties of corrosion resistance and mechanical properties from annealed condition to cold working using cold pilgering or cold drawing process.

MST designationUNS numberMaterial Identity ISO 13680
GroupStructureCategory
DMV 22.5S318032Duplex22-5-3
DMV 25.7S312602Duplex25-7-3
DMV 25.7 NS327602Super Duplex25-7-4
DMV 928N080283Austenitic Ni base27-31-4
DMV 825N088254 21-42-3
DMV G3N06985422-50-7
DMV C276N102764 15-60-16
MST designationUNS numberMaterial Identity ISO 13680GradeDelivery condition
GroupStructureCategory  
DMV 22.5S318032Duplex22-5-365SA
110CH
     125CH
140CH
DMV 25.7S312602Super Duplex25-7-375SA
110CH
     125CH
140CH
DMV 25.7 NS327602SuperDuplex25-7-480SA
125CH
     140CH
SA = Solution annealed
CH = Cold hardened
MST designationUNS numberMaterial Identity ISO 13680GradeDelivery condition
GroupStructureCategory  
DMV 928N080283Austenitic Fe base27-31-4110CH
125
DMV 825N088254Austenitic Ni-base21-42-3110CH
120
DMV G3N069854Austenitic Ni-base22-50-7110CH
125
DMV C276N102764Austenitic Ni-base15-60-16125CH
CH = Cold hardened
MST designationTypical chemical composition 1)
CmaxSimaxMnmaxNiPmaxSmaxCrMoWNFeTiCuOthersPREN
DMV 22.5 0.03 1 24.5 - 6.5 0.03 0.0221 - 232.5 - 3.50.08 - 0.2Bal35 min
DMV 25.7 0.03 0.75 15.5 - 7.5 0.03 0.0324 - 262.5 - 3.50.10 - 0.500.1 - 0.3Bal 0.2 - 0.8 38 min
DMV 25.7 N 0.03 1 16 - 8 0.03 0.0124 - 263 - 40.5 - 10.2 - 0.3Bal0.5 - 142 min
DMV 928 0.03 1 2.529.5 - 32.5 0.03 0.0326 - 283 - 4  Bal 0.6 - 1.4  
DMV 825 0.05 0.5 138 - 46 0.03 0.0319.5 - 23.52.5 - 3.5Bal0.6 - 1.21.5 - 3.0Al ≤ 0.2
DMV G3 0.015 1 1Bal 0.04 0.0321 - 23.56 - 81.5 18 - 21  1.5 - 2.5Co ≤ 5
Nb + Ta ≤ 0.5
 
DMV C276 0.02 0.08 1Bal 0.03 0.0314.5 - 16.515 - 173 - 4.54 - 7Co ≤ 2.5
V ≤ 0.35
Ni + Co ≤ 52
1) All figures in weight percentage. In case of order, the limits of the order specification will apply.