精軋螺紋鋼價格 螺母 墊片 規格齊全

　

精軋螺紋鋼價格 螺母 墊片 規格齊全 精軋螺紋鋼價格 螺母 墊片 規格齊全  是一家專業生產：高強度螺母、精軋螺紋鋼、精軋螺紋鋼錨具（螺母）、精軋螺紋鋼連接器、墊板、螺旋筋、異型螺母、錐型螺母（H型對拉螺母）、貝雷銷、貝雷螺栓、球頭絲的緊固件生產廠家。高強度精(jing)軋(ya)螺紋鋼(gang)(gang)(gang)(gang)筋(jin)廣泛應(ying)(ying)用(yong)于大(da)(da)(da)型水利工(gong)程(cheng)(cheng)、工(gong)業和民用(yong)建筑(zhu)中的(de)連續梁和大(da)(da)(da)型框架結構(gou)，公路、鐵路大(da)(da)(da)中跨橋梁、核電(dian)站及地(di)錨(mao)等工(gong)程(cheng)(cheng)。它(ta)具有連接、錨(mao)固簡便，粘著力強，張(zhang)拉錨(mao)固安全可靠，施工(gong)方(fang)(fang)便等優點(dian)，而且(qie)節約鋼(gang)(gang)(gang)(gang)筋(jin)，減(jian)(jian)少構(gou)件面(mian)(mian)積和重(zhong)量(liang)。檢驗項目(mu)(mu)每(mei)批鋼(gang)(gang)(gang)(gang)筋(jin)的(de)檢驗項目(mu)(mu)、取(qu)(qu)(qu)樣(yang)(yang)(yang)方(fang)(fang)法(fa)和試(shi)(shi)(shi)(shi)(shi)驗方(fang)(fang)法(fa)應(ying)(ying)符合表4的(de)規定。表4 序號 檢驗項目(mu)(mu) 取(qu)(qu)(qu)樣(yang)(yang)(yang)方(fang)(fang)法(fa) 取(qu)(qu)(qu)樣(yang)(yang)(yang)數量(liang) 試(shi)(shi)(shi)(shi)(shi)驗方(fang)(fang)法(fa) 1 化(hua)學成分 GB/T 222 1 GB/T 223、GB/T 4336 2 拉 伸(shen)(shen) 任選兩(liang)根鋼(gang)(gang)(gang)(gang)筋(jin) 2 GB228 本(ben)(ben)標(biao)(biao)(biao)(biao)(biao)準8.2 3 彎(wan) 曲 任選兩(liang)根鋼(gang)(gang)(gang)(gang)筋(jin) 2 GB/T232 本(ben)(ben)標(biao)(biao)(biao)(biao)(biao)準8.3 4 松(song) 弛 任選一(yi)(yi)根鋼(gang)(gang)(gang)(gang)筋(jin) 1/每(mei)合同批 GB10120本(ben)(ben)標(biao)(biao)(biao)(biao)(biao)準8.4 5 疲(pi)(pi) 勞 任選一(yi)(yi)根鋼(gang)(gang)(gang)(gang)筋(jin) 1 本(ben)(ben)標(biao)(biao)(biao)(biao)(biao)準8.5 6 表 面(mian)(mian) 逐支(zhi) 目(mu)(mu)視 7 重(zhong)量(liang)偏差 按(an)本(ben)(ben)標(biao)(biao)(biao)(biao)(biao)準6.7 拉伸(shen)(shen)試(shi)(shi)(shi)(shi)(shi)驗拉伸(shen)(shen)試(shi)(shi)(shi)(shi)(shi)驗應(ying)(ying)采用(yong)全截面(mian)(mian)尺(chi)寸鋼(gang)(gang)(gang)(gang)筋(jin)試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)進(jin)(jin)行(xing)。不允許用(yong)機加工(gong)減(jian)(jian)少截面(mian)(mian)的(de)試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)。單(dan)位應(ying)(ying)力測定應(ying)(ying)按(an)表1所列基圓橫截面(mian)(mian)積計(ji)算(suan)。對每(mei)批重(zhong)量(liang)大(da)(da)(da)于60t的(de)鋼(gang)(gang)(gang)(gang)筋(jin)，應(ying)(ying)取(qu)(qu)(qu)三(san)個拉伸(shen)(shen)試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)進(jin)(jin)行(xing)試(shi)(shi)(shi)(shi)(shi)驗。彎(wan)曲試(shi)(shi)(shi)(shi)(shi)驗彎(wan)曲試(shi)(shi)(shi)(shi)(shi)驗的(de)試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)按(an)規定彎(wan)曲后(hou)(hou)，受彎(wan)曲部位表面(mian)(mian)不得產生(sheng)裂(lie)縫。松(song)弛試(shi)(shi)(shi)(shi)(shi)驗鋼(gang)(gang)(gang)(gang)筋(jin)的(de)應(ying)(ying)力松(song)弛性能試(shi)(shi)(shi)(shi)(shi)驗應(ying)(ying)按(an)GB/T 10120的(de)規定進(jin)(jin)行(xing)。試(shi)(shi)(shi)(shi)(shi)驗期(qi)間，試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)的(de)環(huan)境溫度應(ying)(ying)保持在20℃±2℃內。試(shi)(shi)(shi)(shi)(shi)驗標(biao)(biao)(biao)(biao)(biao)距長度不小于公稱直徑的(de)60倍。試(shi)(shi)(shi)(shi)(shi)樣(yang)(yang)(yang)制備后(hou)(hou)不得進(jin)(jin)行(xing)任何(he)熱(re)處理和冷加工(gong)。初始負荷(he)應(ying)(ying)在3min～5min內均勻施加完畢，持荷(he)1min后(hou)(hou)開始記(ji)錄松(song)弛值。允許用(yong)至少100h的(de)測試(shi)(shi)(shi)(shi)(shi)數據推(tui)算(suan)1000h的(de)松(song)弛率(lv)值。疲(pi)(pi)勞試(shi)(shi)(shi)(shi)(shi)驗經(jing)供(gong)需雙方(fang)(fang)同意,可進(jin)(jin)行(xing)疲(pi)(pi)勞試(shi)(shi)(shi)(shi)(shi)驗,鋼(gang)(gang)(gang)(gang)筋(jin)應(ying)(ying)經(jing)受2×106周次(ci)循環(huan)應(ying)(ying)力而沒有發生(sheng)斷裂(lie)，并且(qie)從zui大(da)(da)(da)應(ying)(ying)力為70%公稱抗拉強度時(shi)上下振(zhen)動。鋼(gang)(gang)(gang)(gang)筋(jin)應(ying)(ying)力幅等于195MPa。