Rapid identification of stainless steel type

Stainless steel type:
1, A type: one is stuck in the arc connector female head, one end is threaded connection.
2, B type: one with two grooves lug card of the male head, one end is threaded outer threaded connection.
3, C type: one with two grooves lug card of the male head, one end is a hose joint with bamboo.
4, D type: one with two grooves lug card of the male head, one end is a screw threaded connection.
5, E type: one is stuck in the arc connector female head, one end is a hose joint with bamboo.
7, DC type: with two grooves lug card of the male head, can be clamped into the male head arc cap plug.
8, DP type: is a circular plug, also called plug plug.
9, F type flange: a card in the arc connector female head, one end is a flange flange connection.
9, F type flange: a card in the arc connector female head, one end is a flange flange connection.
10, C type flanged end: with two grooves lug card of the male head, one end is a flange flange connection.