1、(四)熱軋扁鋼規格、重量表冶標(GB)704-65(四)熱軋扁鋼規格、重量表冶標(GB)704-65寬度(mm) 厚 度4567891011121416182022252830重 量 (kg/m)120.380.470.570.660.75140.440.550.660.770.88160.500.630.750.881.001.151.26180.570.710.850.991.131.271.41200.630.790.941.101.261.411.571.731.88220.690.861.041.211.381.551.731.902.07250.790.981.181.371.57

2、1.771.962.162.362.753.14280.881.101.321.541.761.982.202.422.643.083.53300.941.181.411.651.882.122.362.592.833.363.774.244.71321.011.251.501.762.012.262.542.763.013.514.024.525.02（35）1.101.371.651.922.202.753.303.95361.131.411.691.972.262.512.823.113.393.954.525.095.65401.261.571.882.202.512.833.143.

3、453.774.405.025.656.286.917.858.79451.411.772.122.472.833.183.533.892.244.955.656.367.077.778.839.8910.60501.571.962.362.753.143.533.934.324.715.506.287.077.858.649.8110.9911.78（55）1.732.162.593.023.454.325.196.05561.762.202.643.083.523.954.394.835.276.157.307.918.799.6710.9912.3113.19601.882.362.83

4、3.303.774.244.715.185.656.597.548.489.4210.3611.7813.1914.13631.982.472.973.463.954.454.945.445.936.927.918.909.6910.8812.3613.8514.34652.042.553.063.574.084.595.105.616.127.148.169.1910.2111.2312.7614.2915.31702.202.753.303.854.404.955.506.046.597.698.798.8910.9912.0913.7415.3916.49752.362.943.534.

5、124.715.305.896.487.078.249.4210.6011.7812.9514.7216.4917.66802.513.143.774.405.025.656.286.917.548.7910.0511.3012.5613.8215.7017.5818.84852.673.344.004.675.346.016.677.348.019.3410.6812.0113.3514.6816.6818.6820.02902.833.534.244.955.566.367.077.778.489.8911.3012.7214.1315.5417.6519.7821.20952.983.7

6、34.475.225.976.717.468.208.9510.4411.9313.4214.9216.4118.8420.8822.371003.143.934.715.506.287.077.858.649.4210.9912.5614.1315.7017.2719.6321.9823.551053.304.124.955.776.597.428.249.079.8911.5413.1914.8416.4918.1820.6123.0824.731103.454.325.186.046.917.778.649.5010.3612.0913.8215.5417.2719.0021.5924.

7、1825.911203.774.715.656.597.548.489.4210.3611.3013.1915.0716.9618.8420.7223.5526.3828.261253.934.915.896.677.858.839.8110.7611.7813.7415.7017.6619.6321.5024.5327.4829.441304.085.106.127.148.169.1810.2111.2312.2514.2916.3318.8720.4122.4525.5128.5730.621404.405.506.597.698.799.8910.9912.0913.1915.3917

8、.5819.7821.9824.1827.4830.7732.971504.715.897.078.249.4210.6011.7812.9514.1316.4918.8421.2023.5525.9129.4432.9735.331605.026.287.548.7910.0511.3012.5613.8215.0717.5820.1022.6125.1227.6331.4035.1737.631705.346.678.019.3410.6812.0113.3514.6816.0118.6821.3524.0226.0929.3633.3637.3740.041805.657.078.489

9、.8911.3012.7214.1315.5416.9619.7822.6125.4328.2631.0935.3339.5642.391905.977.468.9510.4411.9313.4214.9216.4117.9020.8823.8626.8529.8332.8137.2941.7644.752006.287.859.4210.9912.5614.1315.7017.2718.8421.9825.1228.2631.4034.5439.2543.9647.10注 扁鋼按其表列重量不同分為三組：第一組 每m小于19kg，通常長（非定尺）39m。第二組 每m小于1960kg，通常長（非

10、定尺）37m。第三組 每m大于60kg，通常長（非定尺）35m。括號內型號為非標準產品，通常長度26m。線性感溫探測器在電纜橋架、電纜隧道及其它電纜火災區域應用在電廠企業和鋼鐵冶金企業動力、配電、控制、通信等方面的電纜遍布全廠，尤其是電纜橋架、電纜隧道、電纜溝、電纜夾層等區域內電纜密集程度很高，火災具有發展速度快、撲滅困難的特點，另外由于這些電纜往往貫穿全廠，火災易于蔓延，危害性很大，因此這些場所應設置有效、可靠的火災探測器。 傳統的點式火災探測器在以上場所不容易安裝，而纜式線型感溫探測器是以上電纜架設場所的一種適宜的、可靠的報警系統，且安裝方便。 對于電纜區域的火災探測，線型感溫探測器可以采

11、用正弦波接觸式敷設（動力電纜不需更換時）或水平正弦波懸掛敷設（動力電纜需更換或維護時）的安裝方式。采用正弦波敷設的安裝方式，線型感溫探測器安裝在電纜托架或支架上時，線型感溫探測器以正弦波方式鋪設于所有被保護的動力或控制電纜的外護套上面，宜采用接觸式敷設。探測器安裝時使用專用的卡具固定，避免探測器受到應力而造成機械損傷。 以正弦波接觸式敷設的線型感溫探測器的長度按下列公式確定：線型感溫探測器的長度托架寬×倍率系數×1.15，其中倍率系數按下表確定。線型感溫探測器以正弦波方式安裝在動力電纜上時，其固定卡具的數目計算方法如下：固定卡具數目正弦波半波個數×21。 正弦波接觸式敷設方式具有火災響應靈敏度高的特點，但這種附設方式不利于被保護電纜的維護和檢修，在實際工程安裝應用時，考慮到抽換、添加、維護、檢修動力電纜方便，采用將線型感溫探測器水平正弦波懸掛敷設的安裝方式，但懸掛敷設的安裝方式將降低對電纜火災探測的靈敏度。線型感溫探測器懸掛敷設的安裝方式如下圖所示。線型感溫探測器采用水平正弦波懸掛敷設的安裝方式時，為保證火災探測的靈敏度和有效性，要求懸掛敷設的線型感溫探測器距被保護電纜表面的垂直高度不應大于30