Z11H/Y内螺纹锻钢闸阀

Z41H-64C高压闸阀

Z41H-16C铸钢闸阀

Z47HF无泄漏燃气平板闸阀

Z41H/Y法兰锻钢闸阀

H11T供应H11T 铸铁内螺纹升降式止回阀

供应HC44X橡胶瓣止回阀

供应H74H对夹圆片式止回阀

供应H72H高压对夹式止回阀

供应H44F46旋启式衬氟止回阀

供应GZW-Ⅰ型阻爆燃型管道阻火器

供应乙炔阻火器