直缝

The flying sawing machine is one of the key units of the straight welded pipe production line.

飞锯是直缝焊管生产线上的关键设备之一。

It's one of the main machines in the modern pipe mill line and formed section line.

它是现代高频直缝焊管生产线和冷弯型钢生产线的主要设备之一。

For enhancement of length-cutting accuracy and consistent operation of the on-line flying sawer, a new PLC-DDC-D control system of flying sawer for the straight-welded pipe production line has been developed on the basis of studies of relevant flying sawer control systems developed both at home and abroad.

为了提高飞锯在线动态定尺锯切精度、保持良好的工作稳定性，在研究了国内外飞锯控制系统的基础上提出了新型的 PLC-DDC-D直缝焊管飞锯控制系统的设计。

The milling and chamfering machine is a key unit in the longitudinally welded pipe production line.

铣头倒棱机是高频直缝焊管生产线上的关键设备之一。

The content of this thesis is followings: Chapter 1 aims to summerize the key problem in the research on pass design of cage-roll forming on the basis of status review of research on ERW cage-roll forming, and to introduce main content, configuration and the motivation of this thesis.

本文的主要研究内容如下：第一章：在综述ERW直缝焊管排辊成型研究现状的基础上，总结了排辊成型孔型研究的关键问题，阐述本文选题依据，并介绍了本文的主要内容、结构安排和创新之处。

My company all the year round production of seamless steel pipe straight hot expansion joints, as well as cold-drawing process as long as you satisfied with the company that is my biggest pleasure hope that the majority of companies continue to support my company.

我公司长年生产无缝钢管直缝以及加工热扩冷拔只要你满意那就是我公司最大的荣幸希望广大公司继续对我公司支持。

The key technology parameter for industrial production is proposed through systemic experiment research and applied to the practical production, to meet the demands of economic and social development on the pipeline steel for transporting petroleum and natural gas and medium steel plate for building giant ship.

本研究工作正是在这种背景下展开的，即以酒钢&十五&规划中的可用于直缝埋弧焊大口径的管线钢开发和用于大型船板建造的微合金化高强度中厚板质量提高为对象，基于酒钢先进的中厚板生产装备，通过实验室系统研究，提出工业生产的关键技术并推广到实际生产过程，满足我国国民经济和社会发展对石油、天然气输送用管线钢和大型船板建造用中厚钢板的需求，为酒钢的可持续发展开辟一条途径。

steel pipes at trial production, which were confirmed meeting the GB/T 9711.2 standard by the China National Quality Supervision, Testing and Inspection Center of Oil Tubular Goods.

产品X80 φ1219×27.5直缝埋弧焊管，经国家石油管材质量监督检验中心检验，确认符合GB/T 9711.2-1999《石油天然气输送钢管交货技术条件第2部分：B级钢管》及TSG D7002-2006《压力管道元件型式实验规则》的要求。

The steel plate edging machine,the steel tube forming mill and the mechanical expanding millconsisting of the SAW straight welded tube plant located at Julong Steel Tube Co.

介绍了巨龙钢管有限公司对直缝埋弧焊管机组三大进口设备(钢板铣边机、钢管成型机和机械扩径机)液压元件开展的国产化替代工作。

The main products include sheet metal bending moulding cutting machine, sheet metal machine with accessories, high precision roller track, etc.

主要产品有薄板滚弯成型机械、直缝高频焊管机械、纵剪机械，平板机械及其配套装置，高精度滚珠导轨等。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。