Hua Yuan Gland Telescopic Joint 1.20 years export trading experience 2.the big scal ,the competitive price Hua Yuan Gland Telescopic Jointmaterial:NO.NAMEQUALITYMATERIAL1frame1QT400-15,Q235A ZG230-450,202gland1NBR3seal collar1QT400-15,Q235A ,ZG230-450,204limited short pipe1Q235A ,20,16Mn5nut4nQ235A,20,ICr18Ni9Ti6long boltnQ235A,35,ICr18Ni9Ti7boltnQ235A,35,ICr18Ni9Timain datenominal ...