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�ܷ�ԇ�(y��n)��MPa��	0.66	1.1	1.76
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�Y(ji��)��(g��u)�L(zh��ng)�Ș�(bi��o)��(zh��n)	GB12221-89
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DN	L	H	HO	A	B	0.6MPa		1.0MPa		1.6MPa
DN	L	H	HO	A	B	DO	n-��d	DO	n-��d	DO	n-��d
50	43	63	438	125	125	110	4-14	125	4-18	125	4-18
65	46	70	453	125	125	130	4-14	145	4-18	145	4-18
80	46	83	478	125	125	150	4-18	160	8-18	160	8-18
100	52	105	519	125	125	170	4-18	180	8-18	180	8-18
125	56	115	713	325	245	200	8-18	210	8-18	210	8-18
150	56	137	749	325	245	225	8-18	240	8-22	240	8-22
200	60	164	843	325	245	280	8-18	295	8-22	295	8-22
250	68	206	947	363	313	335	12-18	350	12-22	355	12-26
300	78	230	1013	363	313	395	12-22	400	12-22	410	12-26
350	78	248	1046	363	313	445	12-22	460	16-22	470	16-26
400	102	289	1135	363	313	495	16-22	515	16-26	525	16-30
450	114	320	1328	465	439	550	16-22	565	20-26	585	20-30
500	127	343	1226	546	481	600	20-22	620	20-26	650	20-33
600	154	413	1394	546	556	705	20-26	725	20-30	770	20-36
700	165	478	1534	546	556	810	24-26	840	24-30	840	24-36
800	190	525	1159	546	556	920	24-30	950	24-33	950	24-39
900	203	585	1748	617	706	1020	24-30	1050	28-33	1050	38-39
1000	216	640	1805	632	706	1120	28-30	1160	28-36	1170	28-42
1200	254	755	2035	632	706	1340	32-33	1380	32-39	1390	32-48

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