ZHIFENGGANGGUANJIANJIE

直缝钢管是焊缝与钢管纵向平行的钢管。通常分为公制电焊钢管、电焊薄壁管、变压器冷却油管等等。直缝焊管生产工艺简单，生产效率高，成本低，发展较快。螺旋焊管的强度一般比直缝焊管高，能用较窄的坯料生产管径较大的焊管，还可以用同样宽度的坯料生产管径不同的焊管。但是与相同长度的直缝管相比，焊缝长度增加30~100%，而且生产速度较低。

直缝钢管英文（Straightsteel pipe），一般焊管：一般焊管用来输送低压流体。用Q195、Q215A、Q235A钢、Q235B普碳制造 。也可采用易于焊接0317标准型号6012及钢母755软钢共同制造。钢管要进行水压、弯曲、压扁等实验，对表面质量有一定要求，通常交货长度为4-10m，常要求定尺（或倍尺）交货。焊管的规格用公称口径表示（毫米或英寸）公称口径与实际不同，焊管按规定壁厚有普通钢管和加厚钢管两种，钢管按管端形式又分带螺纹和不带螺纹两种。

MAIHUHANZHIFENGGANGGUANCAIYONGDEHANJIEGONGYIWEIMAIHUHANJISHU，CAIYONGTIANCHONGWUHANJIE，KELIBAOHUHANJIMAIHU。SHENGCHANDEKOUJINGKEYIDADAO1500mm,LSAWSHIMAIHUHANZHIFENGGANGGUANDEYINGWENJIANCHENG，MAIHUHANZHIFENGGANGGUANDESHENGCHANGONGYIYOUJCOECHENGXINGJISHU、JUANZHICHENGXINGMAIHUHANJISHU。DANGKOUJINGJIAODASHIKENENGYONGLIANGKUAIGANGBANJINXINGJUANZHI，ZHEIYANGHUIXINGCHENGSHUANGHANFENGDEXIANXIANG。KEYIZHIXINGDEBIAOZHUNGB/T3091-2008DIYALIUTIGANGGUANSHENGCHANBIAOZHUN，GB/T9711.1-2 -1997SHIYOUTIANRANQIGANGGUANSHENGCHANSHIYONGBIAOZHUN，HAIKEYIZHIXINGMEIGUOAPI 5L GUANXIANGANGGUANZHIXINGBIAOZHUN。SHENGCHANCAIZHI：Q195A-Q345E；245R；Q345QA-D；L245-L485；X42-X70。CHENGYACANSHUZHUYAOYOU2ST/T ，SWEIQUFUQIANGDU，TWEIBIHOU。MAIHUHANYIJINGFAZHANCHENGWEI，YOUSHUANGSIMAIHUHAN，HAIYOUDUOSIMAIHUHAN，XIAOLVGENGJINYIBUTIGAO。

直缝钢管埋弧焊工艺

1. BANTAN：YONGLAIZHIZAODAKOUJINGMAIHUHANZHIFENGGANGGUANDEGANGBANJINRUSHENGCHANXIANHOU，SHOUXIANJINXINGQUANBANCHAOSHENGBOJIANYAN；

2. XIANBIAN：TONGGUOXIANBIANJIDUIGANGBANLIANGBIANYUANJINXINGSHUANGMIANXIANXUE，SHIZHIDADAOYAOQIUDEBANKUAN、BANBIANPINGXINGDUHEPOKOUXINGZHUANG；

3. YUWANBIAN：LIYONGYUWANJIJINXINGBANBIANYUWAN，SHIBANBIANJUYOUFUHEYAOQIUDEQULV；

4. CHENGXING：ZAIJCOCHENGXINGJISHANGSHOUXIANJIANGYUWANHOUDEGANGBANDEYIBANJINGGUODUOCIBUJINCHONGYA，YACHENG"J"XING，ZAIJIANGGANGBANDELINGYIBANTONGYANGWANQU，YACHENG"C"XING，******XINGCHENGKAIKOUDE"O"XING

5. 预焊：使成型后的直缝焊钢管合缝并采用气体保护焊（MAG）进行连续焊接；

6. NEIHAN：CAIYONGZONGLIEDUOSIMAIHUHAN（***DUOKEWEISISI）ZAIZHIFENGGANGGUANNEICEJINXINGHANJIE；

7. WAIHAN：CAIYONGZONGLIEDUOSIMAIHUHANZAIZHIFENGMAIHUHANGANGGUANWAICEJINXINGHANJIE；

8. 超声波检验Ⅰ：对直缝焊钢管内外焊缝及焊缝两侧母材进行100%的检查；

9. XSHEXIANJIANCHAⅠ：DUINEIWAIHANFENGJINXING100%DEXSHEXIANGONGYEDIANSHIJIANCHA，CAIYONGTUXIANGCHULIXITONGYIBAOZHENGTANSHANGDELINGMINDU；

10. KUOJING：DUIMAIHUHANZHIFENGGANGGUANQUANZHANGJINXINGKUOJINGYITIGAOGANGGUANDECHICUNJINGDU，BINGGAISHANGANGGUANNEIYINGLIDEFENBUZHUANGTAI；

11. SHUIYASHIYAN：ZAISHUIYASHIYANJISHANGDUIKUOJINGHOUDEGANGGUANJINXINGZHUGENJIANYANYIBAOZHENGGANGGUANDADAOBIAOZHUNYAOQIUDESHIYANYALI，GAIJIJUYOUZIDONGJILUHECHUCUNGONGNENG；

12. DAOLENG：JIANGJIANYANHEGEHOUDEGANGGUANJINXINGGUANDUANJIAGONG，DADAOYAOQIUDEGUANDUANPOKOUCHICUN；

13. CHAOSHENGBOJIANYANⅡ：ZAICIZHUGENJINXINGCHAOSHENGBOJIANYANYIJIANCHAZHIFENGHANGANGGUANZAIKUOJING、SHUIYAHOUKENENGCHANSHENGDEQUEXIAN；

14. XSHEXIANJIANCHAⅡ：DUIKUOJINGHESHUIYASHIYANHOUDEGANGGUANJINXINGXSHEXIANGONGYEDIANSHIJIANCHAHEGUANDUANHANFENGPAIPIAN；

15. GUANDUANCIFENJIANYAN：JINXINGCIXIANGJIANCHAYIFAXIANGUANDUANQUEXIAN；

16. FANGFUHETUCENG：HEGEHOUDEGANGGUANGENJUYONGHUYAOQIUJINXINGFANGFUHETUCENG。

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