DAKOUJINGZHIFENGGANGGUANJIANJIE

DAKOUJINGZHIFENGGANGGUANYIBANSHIZHIWAIJING500mmYISHANGDEZHIFENGGANGGUAN，MUQIANSHUANGHANFENG******KOUJINGKEDADAO2020mm，DANHANFENG******KOUJINGKEDA1220mm。

DAKOUJINGZHIFENGGANGGUANBIAOZHUN

大口径直缝钢管国内一般采用GB/T3091-2008、GB/T9711.1-1997、API 5L标准 。

DAKOUJINGZHIFENGGANGGUANCAIZHI

DAKOUJINGZHIFENGGANGGUANCHANGYONGCAIZHIYOUQ235A、Q235B、16Mn、20#、Q345、L245、L290、X42、X46、X70、X80、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb

DAKOUJINGZHIFENGGANGGUANGONGYILIUCHENG

大口径直缝钢管主要以双面埋弧焊生产工艺为主，产品经折弯、合缝、内焊、外焊、矫直、平头等多道工序，达到相关标准要求。

大口径直缝钢管用途

DAKOUJINGZHIFENGGANGGUANSHIDAXINGGUANDAOGONGCHENG、SHUSHUISHUQIGONGCHENG、CHENGSHIGUANWANGJIANSHEDE******XUANZE，GUOJIAXIQIDONGSHUSHIYONGGAILEIXINGGANGGUANDA20WANDUN，SHICHANGQIANJINGGUANGKUO。

DAKOUJINGZHIFENGGANGGUANZHONGLIANGGONGSHI

[(WAIJING-BIHOU)*BIHOU]*0.02466=kg/MI（MEIMIDEZHONGLIANG）

大口径直缝钢管质量检验

GENJUGB/T3091-2008《DIYALIUTISHUSONGYONGHANJIEGANGGUAN》BIAOZHUNDEGUIDING，GANGGUANDENEIWAIBIAOMIANYINGGUANGHUA，BUYUNXUYOUZHEDIE、LIEFENG、FENCENG、DAHAN、DUANHU、SHAOCHUANJIQITASHENDUCHAOGUOBIHOUXIAPIANCHADEYUNXUYOUSHENDUBUCHAOGUOBIHOUXIAPIANCHADEQITAJUBUQUEXIANCUNZAI。

GANGGUANYINGZUOJIXIEXINGNENGSHIYAN、LASHENSHIYAN、WANQUSHIYAN、YABIANSHIYAN、DAOXIANGWANQUSHIYANYIJIYEYASHIYAN，BINGYAODADAOBIAOZHUNGUIDINGDEYAOQIU。GANGGUANYINGNENGCHENGSHOUYIDINGDENEIYALI，******SHIYANYALIWEI5.05Mpa，BAOCHISHIJIANBUXIAOYU5S，SHIYANGUOCHENGZHONG，GANGGUANBUCHUXIANSHENLOUXIANXIANG。DIANZUHANGANGGUANYUNXUYONGCHAOSHENGBOTANSHANGJIANYANHUOWOLIUTANSHANGJIANYANDAITIYEYASHIYAN。MAIHUHANGANGGUANYUNXUYOUCHAOSHENGBOTANSHANGJIANYANHUOSHEXIANTANSHANGJIANYANDAITIYEYASHIYAN。

更多链接：焊管    直缝焊管   直缝钢管   大口径焊管   大口径直缝焊管    Q235B直缝焊管   Q345B直缝焊管   Q345C直缝焊管    Q355B直缝焊管    Q355C直缝焊管