欧美黑吊大战白妞欧美大片-日批视频免费-超碰视屏-欧美一级特黄aaaaaa-日本午夜精品理论片a级app发布-人人干人人澡-午夜精品久久久久久久99黑人-男人与雌宠物交h-日韩成人免费在线-天天射夜夜爽-九一亚色-香蕉视频首页-一区二区三区视频免费在线观看-欧美日韩亚洲国产一区-久久这里有-我不卡av-婷婷综合在线视频-久久在线视频精品-国产蜜臀在线-午夜欧美成人

全國熱線服務:

News 當前位置:首頁 > News > News >
The role of solution treatment of high-precision cold drawn tubes 2017/04/19
Forhigh-precisioncolddrawntubes,thethreeelementsofsolutiontreatmentaretemperature,holdingtimeandcool...
High-precision cold drawn steel pipe production technology 2017/03/18
Highprecisioncolddrawntube,Thecold-rolledsteelpipeunitisacompleteequipmentcombinationforproducingpip...
High-precision cold-drawn precision steel pipe production characteristics 2017/03/18
1)Highproductionefficiency:Ittakes154hourstoproduceacylinderwithaninnerdiameterof420mmandalengthof12...
What is the minimum diameter of the smallest high-precision rolled tube that can be produced? 2017/03/14
ThesmallestthatcanbeproducedHighprecisionrolledtubeWhatisthediameterHighprecisionrolledtubeGenerally...
How to solve the problem of surface decarburization of high-precision cold drawn tubes 2017/01/21
Undernormalcircumstances,whendecarburizationoccursonthesurfaceofcold-drawntubes,itisbecausethesteelw...
Layout requirements for honing tubes 2016/12/27
Honedpipesaredifferentfromordinarypipes,soboththeirprocessingmethodsandpipelinelayouthaveveryspecial...
Basic process of precision cold drawn tube 2016/12/12
(1)Pipematerialsupply,thepipematerialsusedarehot-rolledfinishedpipesorsemi-finishedpipes,extrudedpip...
Selection of tempering process for precision cold drawn tubes 2016/11/28
Inordertoensuretheperformanceofcolddrawntubes,theyaregenerallytemperedduringproductprocessingenginee...