亚洲毛片无码不卡av在线播放-亚洲毛片无码专区亚洲a片-亚洲毛片无码专区亚洲乱-亚洲美免无码中文字幕在线-亚洲美女被黑人巨大在线播放-亚洲美女高清aⅴ视频免费

常州精密鋼管博客網

鋼管生產過程介紹全書(英文版)【下載】

鋼管生產過程介紹全書(英文版)【下載】

Steel Tube and Pipe Manufacturing Processes

The advent of rolling mill technology and its development during the first half of the nineteenth century also heralded in the industrial manufacture of tube and pipe. Initially, rolled strips of sheet were formed into a circular cross section by funnel arrangements or rolls, and then butt or lap welded in the same heat (forge welding process). Toward the end of the century, various processes became available for the manufacture of seamless tube and pipe, with production volumes rapidly increasing over a relatively short period. In spite of the application of other welding processes, the ongoing development and further improvement of the seamless techniques led to welded tube being almost completely pushed out of the market, with the result that seamless tube and pipe dominated until the Second World War. During the subsequent period, the results of research into welding technology led to an upturn in the fortunes of the welded tube, with burgeoning development work ensuing and wide propagation of numerous tube welding processes. Currently, around two thirds of steel tube production in the world are accounted for by welding processes. Of this figure, however, about one quarter takes the form of so-called large-diameter line pipe in size ranges outside those which are economically viable in seamless tube and pipe manufacturing. 

Steel Tube and Pipe Manufacturing Processes-7.jpg

Chart I provides an overview of the size ranges for seamless (DIN 2448) and welded (DIN 2458) tube. As is evident, welded tube is predominantly manufactured in ranges characterized by small wall thicknesses and large outside diameters, while seamless tube is produced mainly in the range extending from normal to very large wall thicknesses in the diameter range up to approx. 660 mm. The process of selection of the manufacturing process – especially in the overlap regions where there is a real choice between seamless and welded tube – is essentially dictated by the application of the tube, i.e. the associated material requirements and the service conditions. 

Steel Tube and Pipe Manufacturing Processes-6.jpg

Chart II provides a summary of the main manufacturing processes applied nowadays in the production of seamless and welded steel tube. Also indicated are the upstream production stages, any downstream further processing operations, and the typical products of the individual technologies. This scheme has been applied in order to illustrate the fact that a varying number of production stages in the starting material preparation or roughing stage are required to serve the various facilities of the tube production stage. 

Steel Tube and Pipe Manufacturing Processes-5.jpg

In the case of seamless tube and also in the case of the Fretz-Moon welding process, the production stage invariably involves a heating operation, in which case the product may also be referred to as hotformed tube or pipe. Downstream facilities for hot drawing or hot expanding occur relatively rarely; on the other hand, hot-formed tubes are extensively used as starting products for a downstream cold forming process. The latter is used in order to extend the product mix of a plant toward smaller diameters and wall thicknesses (DIN 2391), to reduce wall thickness and diameter tolerances, and to achieve special surface finishes or mechanical/thermo-mechanical properties in the tube. 

Steel Tube and Pipe Manufacturing Processes-4.jpg

The production of welded tube initially involves the continuous forming of strip, sheet or plate in roll stands (sometimes referred to as roller cages), or in presses (U-ing and O-ing; C-ing process). The strip may also be cold-formed on a three-roll bending machine and subsequently welded by pressure or fusion welding to produce the finished tube. Depending on the forming process, a distinction is made between longitudinally welded and spiral-welded tube; the latter may also be referred to as helical seam pipe.- 

Steel Tube and Pipe Manufacturing Processes-3.jpg

As the requirements imposed on tubular products continued to increase, not only were the associated manufacturing processes constantly improved, but also appropriate systems for effective production control and quality assurance were introduced. Nowadays, tube and pipe manufacturers of renown all have a system in place enabling the production process from the steelworks to the finished tube to be continuously monitored and documented for total traceability, and effectively controlled on the basis of quality criteria. The mechanical and nondestructive tests stipulated in the relevant technical specifications are carried out by personnel operating independently from the production control department so as to guarantee product of a constantly high quality.

Steel Tube and Pipe Manufacturing Processes-2.jpg

目錄:

Steel Tube and Pipe Manufacturing Processes-1.jpg

這本書主要供給做鋼管外貿的朋友們,是用來和老外吹牛的百科全書。


全書下載網址鋼管生產過程介紹全書(英文版)【下載】


(本平臺"常州精密鋼管博客網"的部分圖文來自網絡轉載,轉載目的在于傳遞更多技術信息。我們尊重原創,版權歸原作者所有,若未能找到作者和出處望請諒解,敬請聯系主編微信號:steel_tube,進行刪除或付稿費,多謝!)
收藏文章
表情删除后不可恢复,是否删除
取消
确定
图片正在上传,请稍后...
评论内容为空!
  • 评论发表您的看法!
133人参与,133条评论
  • 最新评论
2019年12月30日 8:14 [湖北省襄州区网友]

像您的文章写的这么专业的,真的不多,学习中......

2019年12月30日 8:04 [黑龙江省呼玛县网友]

25*2.5 可以生产吗?

2019年12月30日 7:52 梦迷离 [广东省市辖区网友]

请问怎么问你们定购钢管?

2019年12月30日 7:39 追梦魂 [云南省勐海县网友]

SAE 1010 你们可以做的吧?具体报价 发我邮箱 1385126984@vip.163.com

2019年12月30日 4:24 浮光掠影 [山西省盂县网友]

DIN1629 这个标准的钢管你们可不可以做?如果可以 加我QQ46846456 谢谢。

2019年12月30日 1:16

你好,请问 现在10*1什么价格?

2019年12月30日 0:59 [新疆维吾尔自治区阿合奇县网友]

你好,请问现在8*1什么价格?

2019年12月29日 23:31

你好你们厂8*1有现货吗?

2019年12月29日 23:05 追梦魂 [贵州省汇川区网友]

你好,请问你们厂现在12*1的钢管什么价格?10#钢的。

2019年12月29日 21:05 [四川省市中区网友]

这篇文章写的很到位,专业知识分析的很透彻,正在研读中......

2019年12月29日 20:57 巫云 [福建省霞浦县网友]

别的不多说,真的很专业。

2019年12月29日 19:29 [广东省海珠区网友]

这方面的技术 要学习学的。

2019年12月29日 19:11 旧伤疤 [辽宁省兴城市网友]

中国的钢厂真多,但是很多技术还是不如国外的。.

2019年12月29日 19:01 樱花咒 [江西省市辖区网友]

A106 可以生产不?

2019年12月29日 18:45 [江苏省江宁区网友]

这篇文章我在某微信公众号面也看到了,原来你是原创呀!

2019年12月29日 18:39 两颗心 [山西省昔阳县网友]

预付款要多少?

2019年12月29日 18:17 [新疆维吾尔自治区塔什库尔干塔吉克自治县网友]

有世界钢号对照表吗?发一个给我,我的QQ邮箱是:15563456@qq.com

2019年12月29日 17:35 [山东省东营区网友]

45# 钢 可以生产不?

2019年12月29日 16:54 [内蒙古自治区市辖区网友]

您手机号是多少?有个问题想请教。

2019年12月29日 16:47 [山东省招远市网友]

这篇文章专业的。

2019年12月29日 16:40 [陕西省吴堡县网友]

精密钢管,就是要做的精密,性能要达标,您的文章中写的很有道理。

2019年12月29日 16:28 [黑龙江省绥棱县网友]

收藏!

2019年12月29日 14:45 [陕西省汉阴县网友]

专业!

2019年12月29日 14:22 [云南省临沧市网友]

钢材技术全面的。

2019年12月29日 14:21 [辽宁省太平区网友]

您的这篇文章解决了我的技术问题,谢谢了!

2019年12月29日 13:42 雄才大略 [吉林省安图县网友]

钢铁的知识真是渊博呀!

2019年12月29日 13:31 不见死生契阔 [广东省市辖区网友]

看到您的这个博客,我算知道了,什么叫专业。

2019年12月29日 13:07 一份心情 [四川省市辖区网友]

你们的钢管怎么卖

2019年12月29日 11:52 [四川省阿坝藏族羌族自治州网友]

我也是做精密管的厂家,向您学习,学习您的专业知识。

2019年12月29日 11:10

35# 钢可以生产?

热评话题

搜索本站鋼鐵技術
★↓在此搜索查找鋼鐵材料知識↓★↘

互聯網 www.kqfzw.com.cn


鋼鐵行業熱點文章推薦

常州精密鋼管博客網主辦單位:
常州仁成金屬制品有限公司 是 專業的 精密鋼管 生產廠家,汽車鋼管,電機殼鋼管 生產單位。


常州精密鋼管博客網推薦您訪問:

常州精密鋼管博客網
(常州仁成金屬鋼管制品生產廠家博客網站)
www.kqfzw.com.cn?2006-2021
蘇ICP備08003692號

【關于本站】【提問】網站地圖【搜索】【知識星球】電腦端

主站蜘蛛池模板: 狠狠狠狠操| 被黑人伦流澡到高潮hnp动漫 | 日本阿v视频在线观看高清 日本阿v无码观看dvd | 欧美日韩国产片 | 99九九精品国产高清自在线 | 久久偷看各类wc女厕嘘嘘 | 99免费在线视频 | 日本加勒比视频在线观看 | 黑人巨大跨种族video | 色综合图 | 国产美女久久久久久久久久久 | 草草影院地址ccyycom浮力影院37 草草影院第一页 | 国产高清视频在线 | 精品久久伦理中文字幕 | 色综合伊人色综合网亚洲欧洲 | 黄色网一级片 | 天天影视免费在线观看入口 | 天干夜天干天天天爽视频 | 亚洲日韩成人无码 | 5g免费影院永久天天影院网址 | 国产综合在线观看 | 丰满大码的熟女在线视频 | 琪琪色原网站在线观看 | 日本一区午夜爱爱 | 日日碰狠狠丁香久燥 | 日日插夜夜操 | 欧美最猛黑人xxxx黑人猛交 | 国产成人免费福利网站 | 亚洲精品久久久久久 | 欧美国产日韩在线 | 熟女俱乐部五十路六十路av | 成人免费网站视频www | 欧美妇乱 | 国产精品久久久久久久午夜片 | 性色欲情网站 | 精品久久久噜噜噜久久7 | 五月天综合网 | 欧美第四色 | 国产福利在线观看你懂的 | 国产精品久久久久久久人人看 | 日本不卡不码高清免费 |