- 2020
9-18
- 2020
9-18
- 2020
9-18
- 2020
9-18
钻探用无缝钢管产品技术参数
产品规格:O.D30-139.7mm,WT3-19mm执行标准:GB/T9808钻探用无缝钢管GB/T16950,地质岩心钻探钻具DIN2391,无缝精密钢管EN10305-1,精…
- 2020
9-18
地质钻探用管45MnMoB, 30CrMo, 42CrMo, 40Mn2 ; 34CrMo4, 42CrMo4
地质钻探用管钢种:45MnMoB,30CrMnSiA,30CrMo,42CrMo,40Mn2;34CrMo4,42CrMo4;4130,4135,4140,1541等交货状态:冷加工后消除应力退…
- 2020
9-17