不锈钢 SPU225H-03 G3/8(3分),不锈钢 SPU225H-04 G1/2(4分),常闭活塞蒸汽电磁阀 不锈钢 SPU225H-06 G3/4(6分),不锈钢 SPU225H-08 G1(一寸),常闭高温高压电磁阀