无缝钢管公称直径对照表-无锡合金钢管直销处祥和提供

公称通径 Norminal Pipe Size DN	外径 Outside Diameter		公 称 壁 厚 T Norminal Wall Thickness
	A系列 Series A	B系列 Series B	Sch5s	Sch10s	Sch20s	LG	Sch20	Sch30	STD	Sch40	Sch60	xs	Sch80	Sch100	Sch120	Sch140	Sch160
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	-	-	-	5.6
25	33.7	32	1.6	2.8	3.2	-	-	-	-	3.2	-	-	4.5	-	-	-	6.3
32	42.4	38	1.6	28	3.2	-	-	-	-	3.6	-	-	5	-	-	-	6.3
40	48.3	45	1.6	2.8	3.2	-	-	-	-	3.6	-	-	5	-	-	-	7.1
50	60.3	57	1.6	2.8	3.6	-	3.2	-	-	4	-	-	5.6	-	-	-	8.8
65	76.1	76	2	3	3.6	-	4.5	-	-	5	-	-	7.1	-	-	-	10
80	88.9	89	2	3	4	-	4.5	-	-	5.6	-	-	8	-	-	-	11
90	101.6	-	2	3	4	-	4.5	-	-	5.6	-	-	8	-	-	-	12.5
100	114.3	108	2	3	4	-	5	-	-	5.9	-	-	8.8	-	11	-	14.2
125	139.7	133	2.9	3.4	5	-	5	-	-	6.3	-	-	10	-	12.5	-	16
150	168.3	159	2.9	3.4	5	-	5.6	-	-	7.1	-	-	11.1	-	14.2	-	17.5
200	219.1	219	2.9	4	6.3	-	6.3	7.1	-	8	10	-	12.5	16	17.5	20	22.2
250	273	273	3.6	4	6.3	-	6.3	8	-	8.8	12.5	-	16	17.5	22.2	25	28
300	323.9	325	4	4.5	6.3	-	6.3	8.8	-	10	14.2	-	17.5	22.2	25	28	32
350	355.6	377	4	5	8	8	8	10	10	11	16	13	20	25.8	28	32	36
400	406.4	426	4	5	8	8	8	10	10	12.5	17.5	13	22.2	28	30	36	40
450	457.2	478	4	5	8	8	8	11	10	14.2	20	13	25	30	36	40	45
500	508	529	5	5.6	8	8	10	12.5	10	16	20	13	28	32	40	45	50
550	559	-	5	5.6	-	8	-	-	10	-	-	13	30
600	610	630	5.6	6.3	-	8	-	-	10	17.5	-	13	32
650	660	-	-	-	-	8	-	-	10	-	-	13	注： 1、Sch5s、10s、40s、80s 用于不锈钢管件 2、GB 12459为无缝对焊管件标准， GB/T 13401为钢板制对焊管件标准。
700	711	720	-	-	-	8	-	-	10	-	-	13
750	762	-	-	-	-	8	-	-	10	-	-	13
800	813	820	-	-	-	8	-	-	10	-	-	13
850	864	-	-	-	-	8	-	-	10	-	-	13
900	914	920	-	-	-	8	-	-	10	-	-	13
950	965	-	-	-	-	8	-	-	10	-	-	13
1000	1016	1020	-	-	-	8	-	-	10	-	-	13
1050	1067	-	-	-	-	8	-	-	10	-	-	13
1100	1118	1120	-	-	-	8	-	-	10	-	-	13
1150	1168	-	-	-	-	8	-	-	10	-	-	13
1200	1220	1220	-	-	-	8	-	-	10	-	-	13