304 不锈钢法兰截止阀WJ41H-150LB 蒸汽用硬密封开关阀 ¥558.00 WJ41H-150LB、WJ41H-300LB、美标波纹管截止阀耐磨、耐腐 ¥518.00 南高阀门 WJ41H-150LB美标波纹管截止阀 密封性好 耐高压 ¥558.00 南高阀门 美标波纹管截止阀法兰 WJ41H-150LB/300LB耐磨耐腐蚀 ¥518.00 南高供应WJ41H-150LB波纹管截止阀DN40动作迅速扭矩力小 ¥558.00 WJ41H-150LB 美标波纹管截止阀 南高阀门DN50 DN65 DN80耐腐蚀 ¥518.00