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答(Da)：(?)近(Jin)年(Nian)来(Lai)市(Shi)场(Chang)上(Shang)大(Da)量(Liang)应(Ying)用(Yong)冷(Leng)轧(Zha)精(Jing)密(Mi)无(Wu)缝(Feng)钢(Gang)管(Guan)制(Zhi)作(Zuo)钢(Gang)筋(Jin)连(Lian)接(Jie)用(Yong)套(Tao)筒(Tong)，(?)这(Zhe)类(Lei)冷(Leng)加(Jia)工(Gong)钢(Gang)管(Guan)强(Qiang)度(Du)高(Gao)、(?)延(Yan)性(Xing)低(Di)，(?)低(Di)温(Wen)性(Xing)能(Neng)差(Cha)，(?)如(Ru)果(Guo)缺(Que)乏(Fa)必(Bi)要(Yao)的(De)性(Xing)能(Neng)控(Kong)制(Zhi)，(?)有(You)可(Ke)能(Neng)成(Cheng)为(Wei)质(Zhi)量(Liang)隐(Yin)患(Huan)。(?)所(Suo)以(Yi)，(?)套(Tao)筒(Tong)原(Yuan)材(Cai)料(Liao)采(Cai)用(Yong)45#钢(Gang)冷(Leng)拔(Ba)或(Huo)冷(Leng)轧(Zha)精(Jing)密(Mi)无(Wu)缝(Feng)钢(Gang)管(Guan)时(Shi)，(?)钢(Gang)管(Guan)应(Ying)进(Jin)行(Xing)退(Tui)火(Huo)处(Chu)理(Li)，(?)满(Man)足(Zu)现(Xian)行(Xing)行(Xing)业(Ye)标(Biao)准(Zhun)《(?)钢(Gang)筋(Jin)机(Ji)械(Xie)连(Lian)接(Jie)用(Yong)套(Tao)筒(Tong)》(?)JG/T 163-2013对(Dui)钢(Gang)管(Guan)强(Qiang)度(Du)限(Xian)值(Zhi)和(He)断(Duan)后(Hou)伸(Shen)长(Chang)率(Lu)的(De)要(Yao)求(Qiu)。(?)
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CopyRight2017重(Zhong)庆(Qing)奇(Qi)甫(Fu)机(Ji)械(Xie)有(You)限(Xian)责(Ze)任(Ren)公(Gong)司(Si) 备(Bei)案(An)号(Hao)：(?)渝(Yu)ICP备(Bei)15001601号(Hao)-1
