J641H/Y气动截止阀 J41F46衬氟截止阀 J45F46衬氟直流式截止阀 J41J衬胶截止阀 J45J衬胶直流式截止阀 JY41W氧气*黄铜截止阀 J41H/Y锻钢自密封截止阀 J11H/Y、J61H/Y锻钢截止阀 J41H/Y锻钢法兰端截止阀 J41N/F燃气截止阀 J44H/Y法兰角式截止阀 WJ44H/Y德标直角式波纹管截止阀 DSJ41H/Y法兰式水封截止阀 DSJ61H/Y焊接式水封截止阀 J941H/Y电动截止阀 J41W德标法兰截止阀 WJ41H美标波纹管截止阀 WJ41H德标波纹管截止阀 WJ41H国标波纹管截止阀 J44Y、L44Y、GJ44H高压角式截止阀 TP41、TPL41阀套式排污截止阀 J65Y直流式对焊截止阀 DJ41H/Y低温截止阀 NKJ61H/Y真空隔离焊接截止阀 J41W不锈钢法兰截止阀 J61Y/H高温高压截止阀 BJ45H直流式保温截止阀 BJ41H保温截止阀 J21B/F氨用外螺纹截止阀 J42B/F氨用角式法兰截止阀 J24B/F氨用外螺纹角式截止阀 J14B/F氨用截止阀 J14B/F氨用内螺纹角式截止阀