According to different situation,the appearance can be dealed with epoxy powder,hot-dipped zinc,paint,dacromet or as your requirement.

nominal diameter(mm)	D*G(mm)	hole size(mm)	rated pressure(mpa)	Ф	L	K	H
50*25s	60*G1	38	1.6	75	116	60	69
50*32s	60*G1-1/4	46	1.6	75	116	60	69
50*40s	60*G1-1/2	46	1.6	75	116	60	69
65*25s	76*G1	38	1.6	102	114	70	77
65*32s	76*G1-1/4	46	1.6	102	114	70	83
65*40s	76*G1-1/2	51	1.6	102	114	70	83
65*50s	76*G2	51	1.6	102	114	70	83
80*25s	89*G1	38	1.6	114	152	82	77
80*32s	89*G1-1/4	46	1.6	114	152	82	83
80*40s	89*G1-1/2	51	1.6	114	152	82	92
80*50s	89*G2	61	1.6	114	152	82	99
80*65s	89*2-1/2	61	1.6	114	152	82	99
100*25s	108*G1	38	1.6	135	172	87	77
100*32s	108*G1-1/4	46	1.6	135	172	87	83
100*40s	108*G1-1/2	51	1.6	135	172	87	92
100*50s	108*G2	61	1.6	135	172	87	97
100*65s	108*G2-1/2	70	1.6	135	172	87	112
100*25s	114*G1	38	1.6	140	140	93	77
100*32s	114*G1-1/4	46	1.6	140	140	93	83
100*40s	114*G1-1/2	51	1.6	140	140	93	92
100*50s	114*G2	61	1.6	140	140	93	97
100*65s	114*G2-1/2	81	1.6	140	140	93	112
100*80s	114*G3	86	1.6	140	140	93	122
125*25s	133*G1	38	1.6	160	210	100	77
125*32s	133*G1-1/4	46	1.6	160	210	100	83
125*40s	133*G1-1/2	51	1.6	160	210	100	92
125*50s	133*G2	61	1.6	160	210	100	97
125*65s	133*G2-1/2	81	1.6	160	210	100	112
125*80s	133*G3	86	1.6	160	210	100	122
125*25s	140*G1	38	1.6	168	220	107	77
125*32s	140*G1-1/4	46	1.6	168	220	107	83
125*40s	140-G1-1/2	51	1.6	168	220	107	92
125*50s	140*G2	61	1.6	168	220	107	97
125*65s	140*G2-1/2	81	1.6	168	220	107	112
125*80s	140*G3	86	1.6	168	220	107	122
150*25s	159*G1	38	1.6	167	242	117	77
150*32s	159*G1-1/4	46	1.6	167	242	117	83
150*40s	159*G1-1/2	51	1.6	167	242	117	92
150*50s	159*G2	61	1.6	167	242	117	97
150*65s	159*G2-1/2	81	1.6	167	242	117	112
150*80s	159*G3	86	1.6	167	242	117	122
150*25s	165*G1	38	1.6	194	247	125	77
150*32s	165*G1-1/4	46	1.6	194	247	125	83
150*40s	165*G1-1/2	51	1.6	194	247	125	92
150*50s	165*G2	61	1.6	194	247	125	97
150*65s	165*G2-1/2	81	1.6	194	247	125	112
150*80s	165*G3	86	1.6	194	247	125	122
150*100s	165*G4	114	1.6	194	247	125	134
200*25s	219*G1	46	1.6	250	310	146	77
200*32s	219*G1-1/4	46	1.6	250	310	146	83
200*40s	219*G1-1/2	51	1.6	250	310	146	92
200*50s	219*G2	61	1.6	250	310	146	97
200*65s	219*G2-1/2	61	1.6	250	310	146	112
200*80s	219*G3	86	1.6	250	310	146	122
200*100s	219*G4	114	1.6	250	310	146	134
200*40s	273*G1-1/2	51	1.6	309	376	174	92
250*50s	273*G2	81	1.6	309	376	174	97
250*65s	273*G2-1/2	81	1.6	309	376	174	112
250*80s	273*G3	86	1.6	309	376	174	122
250*100s	273*G4	114	1.6	309	376	174	134