压力容器用钢 SPPV235 SPPV315 SPPV355 SPPV410 SPPV450 SPPV490 SEV245 SEV295 SEV345 SBB410 SBB450 SBB450M SBB480 SBB480M STHA12 STHA13 STHA20 STHA22 STHA23 STHA24 STHA25 STHA26 机械结构用钢 SM9CK SM15CK SM20CK SM10C SM12C SM15C SM17C SM20C SM22C SM25C SM28C SM30C SM33C SM35C SM38C SM40C SM43C SM45C SM48C SM50C SM53C SM55C SM58C SM10C SM12C SM15C SM17C SM20C SM22C SM25C SM28C SM30C SM33C SM35C SM38C SM40C SM43C SM45C SM48C SM50C SM53C SM55C SM58C SM55C SM58C SM9CK SM15CK SM20CK STKM11A STKM12A STKM12B STKM12C STKM13A STKM13B STKM13C STKM1** STKM16A STKM16C STKM17A STKM17C STKM18A STKM18B STKM19A STKM19C STKM20A SCR420TK SCM415TK SCM418TK SCM420TK SCM430TK SCM435TK SCM440TK