油气输送 选购指南

供应S360 S390 S415油气输送管

合金结构钢 SMn420 SMn433 SMn438 SMn443 SMnC443 SCr415 SCr420 SCr430 SCr440 SCr445 SCM415 SCM418 SCM420 SCM421 SCM425 SCM430 SCM432 SCM435 SCM440 SCM445 SCM822 SNC236 SNC415 SNC631 SNC815 SNC836 SNCM220 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SACM645 保证淬透性结构钢 SMn420H SMn433H SMn438H SMn443H SMnC420H SMnC443H SCr415H SCr420H SCr430H SCr435H SCr440H SCM415H SC......

电话：0769-89977769 13686288189 李伟