PVC-U、PE80、PE100 三種(zhong)管(guan)(guan)(guan)材(cai)在(zai)目前熱塑(su)(su)性塑(su)(su)料給(gei)水(shui)管(guan)(guan)(guan)材(cai)工程應用中所占比(bi)例相(xiang)當大。尤其是(shi)PVC-U 給(gei)水(shui)管(guan)(guan)(guan)材(cai)經(jing)過幾十年的發展,生產技術比(bi)較(jiao)成熟,原(yuan)(yuan)料基本(ben)國內(nei)自給(gei),產品(pin)價格相(xiang)對較(jiao)低,并且經(jing)過市(shi)場檢(jian)驗,性能(neng)達到(dao)國家或國際標準,故(gu)此(ci)在(zai)熱塑(su)(su)性塑(su)(su)料管(guan)(guan)(guan)材(cai)中極具競爭力(li)。PE80、PE100 給(gei)水(shui)管(guan)(guan)(guan)材(cai)在(zai)國內(nei)為新興產品(pin),主(zhu)要因(yin)為其原(yuan)(yuan)料均依...
PE材料(liao)是(shi)聚(ju)(ju)乙烯(xi)(xi),是(shi)塑(su)料(liao)材料(liao)中(zhong)用量(liang)最(zui)大的(de)品種,它是(shi)由(you)聚(ju)(ju)乙烯(xi)(xi)合成的(de)高分子(zi)材料(liao)。基本分為兩類:低密度聚(ju)(ju)乙烯(xi)(xi)LDPE(強度較(jiao)低);高密度聚(ju)(ju)乙烯(xi)(xi)HDPE。PE材料(liao)按照國際上統一的(de)標(biao)準(zhun)劃分為五個(ge)等級(ji):PE32級(ji)、PE40級(ji)、PE63級(ji)、PE80級(ji)和(he)PE100級(ji)。目(mu)前即將(jiang)新增到(dao)PE112級(ji),相關(guan)標(biao)準(zhun)正在起草制定中(zhong)。用于給(gei)水(shui)管(guan)(guan)道(dao)PE管(guan)(guan)的(de)生(sheng)產為高密度聚(ju)(ju)乙...
一、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)材的分(fen)(fen)類(lei) 1、按(an)(an)生產方(fang)(fang)法分(fen)(fen)類(lei) (1)無縫管(guan)(guan)(guan)(guan)(guan)(guan)(guan)——熱軋(ya)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、冷軋(ya)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、冷拔管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、擠壓管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、頂管(guan)(guan)(guan)(guan)(guan)(guan)(guan) (2)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan) (a)按(an)(an)工藝(yi)分(fen)(fen)——電(dian)弧焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、電(dian)阻(zu)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(高頻、低頻)、氣焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、爐焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan) (b)按(an)(an)焊(han)(han)縫分(fen)(fen)——直(zhi)縫焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、螺旋(xuan)焊(han)(han)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)2、按(an)(an)斷面(mian)形(xing)(xing)(xing)狀(zhuang)分(fen)(fen)類(lei) (1)簡單斷面(mian)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)——圓(yuan)(yuan)形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、方(fang)(fang)形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、橢圓(yuan)(yuan)形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、三角形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、六角形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、菱形(xing)(xing)(xing)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)、...