Specifically for Q345D round? Company Name: Shanghai Metal Materials Co., Ltd. North Run? Contact: Huang Yang? Mobile: 15601805059? Tel 021 -56699572? Fax 021 -56699572 Address: Railway Road, Baoshan District, Shanghai No. 1050 Jufeng Business Building 1, Room 601? 1.Q345D round. was low alloy steel round bar 2. Implementation of standards: GB/T1591-2008 "high strength low alloy structural steels" 3.Q345D steel with Q345A, B, C compared to steel purposes. Low-temperature impact test temperature low power (-20 ℃ minimum 27J) 4. Mechanical properties. Containing hazardous materials P, S ratio Q345A, B, C must be low. 5 Market price than Q345A, B, C to high 6. Chemical composition: C: ≤ 0.18; Si: ≤ 0.50; Mn: ≤ 1.70; P: ≤ 0.030; S: ≤ 0.025; Nb: ≤ 0.07; V: ≤ 0.15; Ti: ≤ 0.20; Cr: ≤ 0.30; Ni: ≤ 0.50; Cu: ≤ 0.30; N: ≤ 0.012; Mo: ≤ 0.10; Als: ≥ 0.015. 7 Mechanical properties Yield: ≤ 16mm: ≥ 345; 16-40mm: ≥ 335; 40-63mm: ≥ 325; 63-80mm: ≥ 315; 80-100mm: ≥ 305; 100-150mm: ≥ 285; 150-200mm : ≥ 275; 200-250: ≥ 275; 250-400: ≥ 265. Tensile strength :450-630. Elongation: ≥ 21. Impact test: -20 ℃: ≥ 34. 8 Delivery Status steel hot-rolled, controlled rolling, normalizing, normalizing and tempering, thermomechanical rolling (TMCP) state delivery. ?????????????????????????????????????????????????? ????????????????????????????? my standing Q345D round at the 2nd stockholders library, a diameter of 18-250, on behalf of Custom or special requirements of large-size round Q345D round ∮ 18 * 6000-8000 Huaigang Q345D round ∮ 20 * 6000-8000 Huaigang Q345D round ∮ 30 * 6000-8000 Huaigang Q345D round ∮ 40 * 6000 - 8000 Huaigang Q345D round ∮ 46 * 6000-8000 Huaigang Q345D round ∮ 60 * 6000-8000 Huaigang Q345D round ∮ 80 * 6000-8000 Huaigang Q345D round ∮ 90 * 6000-8000 Huaigang Q345D round ∮ 100 * 6000-8000 Huaigang Q345D round ∮ 110 * 6000-8000 Huaigang Q345D round ∮ 120 * 6000-8000 Huaigang Q345D round ∮ 130 * 6000-8000 Sugang Q345D round ∮ 140 * 6000-8000 Sugang Q345D round ∮ 150 * 6000-8000 Sugang Q345D round ∮ 160 * 6000-8000 Sugang Q345D round ∮ 170 * 6000-8000 Sugang Q345D round ∮ 180 * 6000-8000 Sugang Q345D round ∮ 190 * 6000-8000 Sugang Q345D round ∮ 200 * 6000-8000 Sugang Q345D round ∮ 210 * 6000-8000 Huaigang Q345D round ∮ 220 * 6000-8000 Huaigang Q345D round ∮ 230 * 6000-8000 Huai Steel Q345D round ∮ 240 * 6000-8000 Huaigang Q345D round ∮ 250 * 6000-8000 Huaigang Q345D round ∮ 260 * 6000-8000 Huaigang ---------------- ---------------- Q345D round our roughly in the following areas are equipped with sales channels: Q345D round Baoding, Cangzhou, Hebei Chengde, Dalian, Dandong, Fushun, Fuxin, Zhengzhou, Hangzhou, Lishui resistant material Q345D Changchun, Siping, Jilin Tonghua round Changzhi Jincheng, Shanxi Taiyuan, Yuncheng Wuhu Huangyan resistant material Q345D round Dezhou, Dongying, Binzhou, Shandong Jinan, Liaocheng, Jining Laiwu, Linyi Zhoukou Taicang Jingjiang resistant material Q345D round Hanzhong, Ankang, Shaanxi Xi'an, Baoji, Xianyang Yan'an Yingkou, Shenyang, Weihai Haining Yangzhou resistant materials Q345D round Luoyang, Kaifeng, Anyang, Henan Hebi, Xinxiang Shangqiu, Xinyang Xuchang Yancheng Nanyang Laiwu resistant material Q345D round Chaohu, Anhui Anqing, Bengbu, Chuzhou, Wuhu, Tongling Fuyang, Hefei, Huaibei, Ningbo, Huzhou resistant material Q345D round Ji'an, Jiangxi Ganzhou, Jiujiang, Nanchang, Shangrao, Pingxiang, Xinyu Yichun Haimen, Wenzhou, Changzhou resistant material Q345D round Nanning, Liuzhou, Guilin, Wuzhou, Beihai, Guangxi Yulin, Tieling, Liaoyang Qidong resistant material Q345D round Wujiang, Wuxi, Changzhou, Jiangsu Jintan Hongze Lake, Nanjing, Nantong Liyang Huai Hai Danyang Q345D round sunshine resistant material such as the East Rugao Changshu, Wujiang, Suzhou, Kunshan, Taicang, Tongzhou Suqian Taizhou Luoyang Nanchang resistant material Q345D round Jing Jiang Taixing Jiangsu Yixing, Wuxi, Xuzhou, Yancheng Sheyang xiangshui Jiaxing Dongtai Cixi resistant material Q345D round Gaoyou jiangdu Yizheng Jinzhou, Panjin Danyang, Zhenjiang, Yangzhou, Zhenjiang Jurong resistant Anqing Huai'an grinding material Q345D round Lin'an, Zhejiang Hangzhou Fuyang, Tonglu, Jiande Xiaoshan Changxing, Huzhou Anji resistant material Q345D round Suqian Jiangyin Lake Tongxiang Jin Haiyan Jiashan Ping Pan River Yiwu Dongyang Lanxi resistant material Q345D round Zibo, Qingdao, Ningbo Beilun Cixi Jinyun Longquan Fenghua River Yuyao rural Xiangshan things Xi'an, Taizhou resistant material Q345D round Jiangshan Shengzhou, Shaoxing Xinchang, Shangyu Zhuji Zhejiang Huangyan Luqiao Changshu Yuyao Linhai resistant material Q345D round Xianju Yuhuan Pingyang, Wenzhou Yueqing Cangnan Yongjia Zhoushan, Xiamen, Hefei, Nanjing Ryan resistant material Q345D round Weihai Zibo, Weifang, Qingdao, Rizhao, Yantai Zaozhuang Tai'an Shanghai Zhenhai Taizhou Yixing resistant material Q345D round Xuancheng Huangshan Luan Huainan Baoying jiangyan roof Wenling Quzhou Yongkang resistant material Q345D round Yantai, Dongying Lishui Deqing Jiaxing Zhangjiagang, Lianyungang Jingdezhen Shan Shanghai Weifang resistant Huludao grinding material