限压阀钢球 [机] pressure relief valve ball ; oil pressure relief valve ball

气阀钢 gas valve steel

往复阀钢球 shuttle valve ball

加速器泵出油阀钢球 accelerator pump outlet valve ball

奥氏体气阀钢 austenitic valve steel

奥氏体排气阀钢 austenite exhaust valve steel

阀门钢 valve steel

锻钢阀 Forging Steel Valve ; Forged Steel Valves

不锈钢球阀 Stainless Steel Ball Valve ; SS Ball Valve