Z541H/W/Y美标伞齿轮闸阀
Z541H/W/Y美标大口径闸阀
Z41W美标闸阀
Z541Y高压美标自密封闸阀
Q341F/H/W/Y美标固定式球阀
J41W/H/Y美标铸钢截止阀
J541H美标伞齿轮截止阀
上海百钢阀门集团有限公司 • 百炼成钢
Shanghai Baigang Valve Group Co., Ltd • Be toughened and hardened into steel
