the joints have been completely installed, each threaded portion threaded connector fittings off the road is not too long a pitch. particularly for the splice length lace up style, open mouth style and style with the top hat, the lace lock is leaked is not restricted, however, to check the thread length dimensions,length to ensure the screw threaded into the threaded pipe has reached the design requirements.
đang được dịch, vui lòng đợi..