호칭 Designation		외경 Outside Diameter	두께 Tickeness(mm)	단위중량 (소켓제외)
A	B	mm	mm	kg/m
15	1/2	21.7	2.65	1.25
20	3/4	27.2	2.65	1.60
25	1	34.0	3.25	2.45
32	1 1/4	42.7	3.25	2.45
40	1 1/2	48.6	3.25	3.63
50	2	60.5	3.65	5.12
65	2 1/2	73.6	3.65	6.34
80	3	89.1	4.05	8.49
90	3 1/2	101.6	4.05	9.74
100	4	114.3	4.5	12.2
125	5	139.8	4.85	16.1
150	6	165.2	4.85	19.2
200	8	216.3	5.85	30.4
250	10	267.4	6.40	41.2
300	12	318.5	7.00	53.8
350	14	355.6	7.60	65.2
400	16	406.2	7.90	77.6
450	18	457.2	7.90	87.5
500	20	508.0	7.90	97.4