亚洲视频福利_鲁丝一区二区三区免费_国产欧美日韩一级_丁香婷婷综合激情五月色_污影院在线观看_4438x成人网全国最大_1000部精品久久久久久久久_久久精品国产综合_精品久久久久久中文字幕一区奶水_欧美精品播放_欧美男人的天堂_亚洲自拍偷拍网站_**欧美日韩在线_日本精品一区二区三区四区的功能_91精品办公室少妇高潮对白_夜夜嗨av一区二区三区网站四季av

最全厚壁無縫鋼管理論重量表
外  徑	6	7	8	9	10	12	14	16	18	20	22	30
30	3.55	3.97	4.34
32	3.85	4.32	4.73
34	4.14	4.66	5.13
36	4.44	5.01	5.52
37	4.59	5.18	5.72	6.21
40	5.03	5.70	6.31	6.88	7.39
42	5.33	6.04	6.71	7.32	7.89
45	5.77	6.56	7.30	7.99	8.63
48	6.21	7.08	7.89	8.66	9.37	10.65
50	6.51	7.42	8.29	9.10	9.86	11.24
54	7.10	8.11	9.07	9.98	10.85	12.43
60	7.99	9.15	10.26	11.32	12.33	14.20	15.88
63.5	8.51	9.75	10.95	12.10	13.19	15.24	17.09	18.74	20.20
76	10.36	11.91	13.42	14.87	16.28	18.94	21.40	23.67	25.75
80	10.95	12.60	14.20	15.76	17.26	20.12	22.76	25.25	27.52	29.59
89	12.28	14.15	15.98	17.76	19.48	22.76	25.89	28.80	31.52	34.03
102	14.20	16.40	18.54	20.64	22.69	26.63	30.38	33.93	37.29	40.44
114	15.98	18.47	20.91	23.30	25.65	30.18	34.52	38.67	42.61	46.36
127	17.90	20.71	23.48	26.19	28.85	34.03	39.01	43.80	48.38	52.77
133	18.79	21.75	24.66	27.52	30.33	35.81	41.08	46.16	51.05	55.73	60.22
159	22.64	26.24	29.79	33.29	36.74	43.50	50.06	56.42	62.59	68.55	74.33
219	31.52	36.60	41.63	46.61	51.54	61.26	70.77	80.10	89.22	98.15	106.88
245	35.36	41.08	46.76	52.38	57.95	68.95	79.75	90.35	100.76	110.97	120.98	159.06
273	39.51	45.92	52.28	58.60	64.86	77.24	89.42	101.40	113.19	124.78	136.17	179.77
299	43.35	50.41	57.41	64.36	71.27	84.93	98.39	111.66	124.73	137.6	150.28	199.01