20#國標彎頭
聯系人: | 李經理 |
---|---|
聯系電話: | 13831739678 |
座機: | 0317-6267877 |
傳真: | 0317-6261772 |
郵箱: | hebljt@126.com |
地址: | 河北省滄州市運河區金鼎大廈 |
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產(chan)品介紹
彎(wan)(wan)(wan)(wan)管(guan)(guan)(guan)(guan)(guan)尺寸由管(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)(jing)、彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)角(jiao)度(du)和彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)三者確(que)定(ding)(ding)。彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)角(jiao)度(du)根(gen)據圖(tu)紙和施工現場實際情況確(que)定(ding)(ding),然后制出樣(yang)(yang)板,照樣(yang)(yang)板煨(wei)(wei)制并按(an)樣(yang)(yang)板檢查(cha)煨(wei)(wei)制管(guan)(guan)(guan)(guan)(guan)件彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)角(jiao)度(du)是否符合要求。樣(yang)(yang)板可用圓鋼(gang)煨(wei)(wei)制,圓鋼(gang)的(de)(de)(de)直徑(jing)(jing)(jing)根(gen)據所煨(wei)(wei)管(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)(jing)的(de)(de)(de)大小(xiao)選(xuan)(xuan)用,10-14mm即可。彎(wan)(wan)(wan)(wan)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)應(ying)按(an)管(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)(jing)大小(xiao)、設計(ji)要求及有關規(gui)(gui)定(ding)(ding)而定(ding)(ding)。既不(bu)能過(guo)(guo)大,也(ye)末虛選(xuan)(xuan)得太(tai)(tai)小(xiao)。因(yin)為彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)過(guo)(guo)大,不(bu)但用材料(liao)多,而且管(guan)(guan)(guan)(guan)(guan)子(zi)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)部分所占的(de)(de)(de)地方(fang)也(ye)大,這樣(yang)(yang)會給管(guan)(guan)(guan)(guan)(guan)道裝配帶來困難(nan);彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)選(xuan)(xuan)得太(tai)(tai)小(xiao)時,彎(wan)(wan)(wan)(wan)頭(tou)(tou)背部管(guan)(guan)(guan)(guan)(guan)壁由于(yu)過(guo)(guo)分伸長而減薄,使其強度(du)降(jiang)低,而在彎(wan)(wan)(wan)(wan)頭(tou)(tou)里側管(guan)(guan)(guan)(guan)(guan)壁被壓縮,形成皺紋狀態。因(yin)此,一(yi)般規(gui)(gui)定(ding)(ding):熱煨(wei)(wei)彎(wan)(wan)(wan)(wan)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)應(ying)不(bu)小(xiao)于(yu)管(guan)(guan)(guan)(guan)(guan)子(zi)外(wai)徑(jing)(jing)(jing)的(de)(de)(de)3.5倍;冷煨(wei)(wei)彎(wan)(wan)(wan)(wan)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)應(ying)不(bu)小(xiao)于(yu)管(guan)(guan)(guan)(guan)(guan)子(zi)外(wai)徑(jing)(jing)(jing)的(de)(de)(de)4倍;焊接彎(wan)(wan)(wan)(wan)頭(tou)(tou)的(de)(de)(de)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)應(ying)不(bu)小(xiao)于(yu)管(guan)(guan)(guan)(guan)(guan)子(zi)外(wai)徑(jing)(jing)(jing)的(de)(de)(de)1.5倍;沖壓彎(wan)(wan)(wan)(wan)頭(tou)(tou)彎(wan)(wan)(wan)(wan)曲(qu)(qu)(qu)(qu)(qu)(qu)半(ban)徑(jing)(jing)(jing)應(ying)不(bu)小(xiao)于(yu)管(guan)(guan)(guan)(guan)(guan)子(zi)外(wai)徑(jing)(jing)(jing)。