1.Standard: GB/T 20065-2006 ,ASTM A722 2.Material:40Si2MnV 3.Diameter: 15-75mm ...

1.Standard: GB/T 20065-2006 ,ASTM A722 2.Material:40Si2MnV 3.Diameter: 15-75mm ...

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4130 seamless ASTM /A 519 06 heat treat to 22 max L-80 properties, quench and tempere...

Seamless ASTM/A 519 06, 4130 round alloy tubing, cold drawn, quench and temper, heat ...

standard:API SPEC 5CT, API SPEC 5D API SPEC 5L steel Grade:J55 K55 N80-1 N80-Q N80-...

material:A234 WPB A105 A283-D A135-A A53-A A106-A A179-C A214-C A192 A226 A315-B A53-...

Product standards:ISO4144,EN10241,SP114,JIS Process standards:ASTM A351 Medium:Air,...