GB10747-89D12.5其余DD图1表2mm公称管子外径D法老钢环螺栓螺纹及通孔质通径第一第二D系列系列DD:DHThkgPN=2.5MPa10订2著g2835120.7515038M12140.8261.20640550101.59422.32545752.68M16西劲60.3新豹1657第11022441083.64104.72185,446M20名100114.3114128.51139.76680211.39168.37514.7830248M2426193.71330217市1417.44200219.121901222.19225395276330161切M27026.772
