Who can tell me that one is a card sleeve, one is threaded sleeve joint, and the other is the card sleeve type joint, what's the difference?.I have a drawing at the same time to use these two, are 1 inches of joints, I do not know how to distinguish between the names.
Or 1 inch single (head) card sleeve and 1 inch double (head) card sleeve
One is a card sleeve, the other is a threaded sleeve type joint called a sleeve type end angle pipe joint (wherein, the clamping sleeve is an end right angle pipe joint and a sleeve type taper thread end right angle pipe joint)
The two ends of the card sleeve is called the sleeve type right angle pipe joint
