Tiwb di-dor oer wedi'i dynnu'n fanwl uchel

Manylebau safonol
diamedr mewnol	Diamedr allanol	trwch wal	pwysau	diamedr mewnol	Diamedr allanol	trwch wal	pwysau	diamedr mewnol	Diamedr allanol	trwch wal	pwysau
30	36	3	2.44	90	114	12	30.18	160	170	5	20.34
40	50	5	5.55	100	108	3.5	8.93	160	172	6	24.56
40	55	7.5	8.79	100	114	7	18.47	160	180	10	41.92
40	58	9	10.88	100	121	10.5	28.61	160	184	12	50.90
50	60	5	6.78	100	127	13.5	37.79	160	194	17	74.20
50	63	6.5	9.06	110	120	5	14.18	180	192	6	27.52
50	65	7.5	10.63	110	126	8	23.28	180	194	7	32.28
50	70	10	14.80	110	133	11.5	34.46	180	200	10	46.86
55	65	5	7.40	110	140	15	46.42	180	203	11.5	54.31
55	70	7.5	11.56	120	140	10	32.06	180	219	19.5	95.93
60	70	5	8.01	120	146	13	42.64	200	216	8	41.03
60	75	7.5	12.48	125	135	5	16.03	200	219	9.5	49.08
63	69	3	4.88	125	140	7.5	25.51	200	232	16	85.22
63	73	5	8.38	125	152	13.5	46.11	200	245	22.5	123.45
63	76	6.5	11.14	125	159	17	59.53	220	250	15	86.93
63	83	10	18.00	140	152	6	21.60	220	273	26.5	161.09
70	83	6.5	12.26	140	159	9.5	35.00	250	270	10	64.12
70	86	8	15.39	140	163	11.5	42.96	250	299	24.5	165.80
80	86	3	6.14	140	168	14	53.17	280	325	22.5	167.84
80	90	5	10.48	140	178	19	74.50	300	325	12.5	96.33
80	95	7.5	16.18	140	180	20	78.91	300	351	25.5	204.68
80	102	11	24.68	150	160	5	19.11	300	377	38.5	321.38
80	108	14	32.45	150	163	6.5	25.09	320	351	15.5	128.24
90	100	5	11.71	150	170	10	39.46	320	377	28.5	224.93
90	105	7	18.03	150	175	12.5	50.09	400	426	13	132.40
90	108	9	21.97	150	180	15	61.03	400	480	40	432.02
Mae manylebau a hyd arbennig hefyd yn derbyn arferiad