公称通径 DN	外径		公 称 壁 厚
	A系列	B系列	Sch 5s	Sch 10s	Sch 15s	Sch 20s	Sch 30s	Sch 40s	Sch 60s	Sch 80s	Sch 100s	Sch 120s	Sch 140s	Sch 160s
15	21.3	18	1.6	2.1	2.6	--	--	2.9	--	3.6	--	--	--	4.5
20	26.9	25	1.6	2.1	2.6	--	--	2.9	--	4.0	--	--	--	5.6
25	33.7	32	1.6	2.8	3.2	--	--	3.2	--	4.5	--	--	--	6.3
32	42.4	38	1.6	2.8	3.2	--	--	3.6	--	5.0	--	--	--	6.3
40	48.3	45	1.6	2.8	3.2	--	--	4.0	--	5.0	--	--	--	7.1
50	60.3	57	1.6	2.8	3.6	3.2	--	5.0	--	5.6	--	--	--	8.8
65	76.1(73)	76	2.0	3.0	3.6	4.5	--	5.6	--	7.1	--	--	--	10.0
80	88.9	89	2.0	3.0	4.0	4.5	--	5.9	--	8.0	--	--	--	11.0
90	101.6	--	2.0	3.0	4.0	4.5	--	6.3	--	8.0	--	--	--	12.5
100	114.6	108	2.0	3.0	4.0	5.0	--	7.1	--	8.8	--	11.0	--	14.2
125	139.7	133	2.9	3.4	5.0	5.0	--	8.0	--	10.0	--	12.5	--	16.0
150	168.3	159	2.9	3.4	5.0	5.6	--	8.8	--	11.0	--	14.2	--	17.5
200	219.1	219	2.9	4.0	6.3	6.3	7.1	10.0	10.0	12.5	16.0	17.5	20.0	22.2
250	273.0	273	3.6	4.0	6.3	6.3	8.0	12.5	12.5	16.0	17.5	22.2	25.0	28.0
300	323.9	325	4.0	4.5	6.3	6.3	8.8	14.2	14.2	17.5	22.2	25.0	28.0	32.0
350	355.6	377	4.0	5.0	--	8.0	10.0	16.0	16.0	20.0	25.8	28.0	32.0	36.0
400	406.4	426	4.0	5.0	--	8.0	10.0	17.5	17.5	22.2	28.0	30.0	36.0	40.0
450	457.0	478	4.0	5.0	--	8.0	11.0	20.0	20.0	25.0	30.0	36.0	40.0	45.0
500	508.0	529	5.0	5.6	--	10.0	12.5	20.0	20.0	28.0	32.0	40.0	45.0	50.0

　  Note: 1. only if the user has the special request, should first guarantee what outside the nose and nominal wall thickness's limit deviation the 2. wall thickness deviation refers to is appendix A (reference) arranges in order the limit deviation