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The invention is mainly open end of a drill pipe thickening processing method, according to the use of drill pipe body known, drill pipe end thickening in the production of drill pipe body is an important influence the quality of the drill pipe links thickening process design determines much ...

该项发明主要是公开了一种钻杆管端加厚的加工方法，根据钻杆管体的使用情况可知，钻杆管端加厚在钻杆管体生产中是影响整个钻杆质量的重要环节，加厚工艺设计的好坏很大。。。

To solve the problems in present hydraulic calculations of gas pipe network such as numerous data-inputting, unprecise output and a lack of hydraulic calculation methods to keep consistent with steady flow and non-steady flow in real working conditions of gas pipe network, in the paper the author has set up a mathematical model of heat transfer process of gas in pipes on the basis of thermodynamic basic theories and obtained more accurate calculation methods of gas storage quantity in long conveying pipes and urban pipe network of high pressure. This research achievement has been applied to real pipe network.

本文研究目的是解决目前燃气管网水力计算中存在的诸如输入数据繁琐、计算精度不高、缺乏符合实际燃气管网工况的稳定流及不稳定流管网水力计算方法等问题，试图根据热力学基本理论建立燃气在管道中传热过程数学模型，给出较为精确的长输管线及城市高压管网储气量的计算方法，并将研究成果应用于实际管网运行中。

Then the flow in the curved pipe and reducing pipe was simulated through using CFD software, know that fluid passing curved pipe, reducing pipe can form secondary flow, vortex shedding, circumfluence, occur separation of boundary layer and periodic circulation flow, make the fluid pulsant, then cause the pipe vibrancy.

然后再应用通用CFD软件对具有弯曲和变径的热风炉管内流场进行模拟，得到当流体流过弯管、文氏管后形成了二次流、环流，并发生边界层分离和周期性旋涡脱落，它们会使后面的管流处于脉动状态，脉动状态的流体在管内流动时，会引起管道系统产生振动。

Drainage system Design of drainage system is it discharge way drain off water the sureness of the system to include; Calculation of the flow of second of design of the sanitary sewage drainage pipeline of the building ; Is it in charge of sideways to drain off water , water conservancy in charge ofed to set up calculate and in charge of pipeline slope , pipe diameter and sureness of elevation sideways, set up calculation to in charge of pipe diameter , is it confirm pipe diameter size and position and sewage waste water design of the inspection shaft after discharging of breather pipe to come from this.

消火栓给水系统消火栓给水系统的设计内容具体包括：根据建筑物性质选择设计参数，包括每支水枪的射流量、消火栓的口径、水枪口径、龙带长度等；消火栓系统计算，具体包括消火栓的布置计算和消防立管和横支管的水力计算；减压孔板的计算；消火栓设施的确定，包括水泵结合起的设置、消防水泵和泵房的要求。

At present the company's products have been the formation of series production, including electric air conditioner pipe, electric water heaters heat pipes, oil-filled heaters (Oil-filled Electric Radiator) heat pipe, dry pipe,heating plate, boiler heat pipe, heat pipe fittings, etc., series, products widely used in air conditioners, electric water heater, furnace oil-filled heater, oven, microwave ovens, washing machines, dishwashers,, drinking fountains , bread and other types of heating appliances charged Products.

目前公司的产品已形成系列化生产，主要包括空调器电热管、电热水器发热管、充油炉发热管、干烧管、电灶发热盘、水煲发热管、洁具发热管等七大系列，产品广泛应用于空调器、电热水器、充油炉电暖器、烤炉、微波炉、洗衣机、洗碗机、电灶、饮水机、面包机等各类带电加热类的家电产品。

In order to improve the quality of "Xintongda" brand hot-galvanize series products and guarantee to carry out the latest national standard of GB3640-88 and GB/T2518-88, in Beijing and Guangzhou, we have invested large quantity of funds to introduce American Sendzimir hot-galvanize production line to manufacture "Xintongda" brand hot-galvanize series, including hot-galvanize braiding pipe, square pipe, rectangle pipe, circular pipe, wire pipe, electric cable bridge truss, C-steel and strip steel, etc. The products have enjoyed a good reputation for their best quality, various varieties and considerate after-service.

为提高&新通达&牌热镀锌系列的品质，保证产品严格执行GB3640-88和GB/T2518-88最新国家标准，在北京，广州等科研单位的协助下，我们又投入了大量资金，引进了美国森吉米尔热镀锌生产线，从而使热镀锌穿线管，方型管，矩形管，圆形管，线槽，电缆桥架，C型钢及带钢等&新通达&牌热镀锌系列的质量更保证，品质更超群，品种更繁多。

The main applications are oil or gas transfer pipe; pipe for oil well bushing; transfer pipe for medium or low pressure water, gas, oil; pipe used in the structure of low and medium pressure boiler、engine boiler heat exchanger and condenser; pipe for construction、iron tower、frame structure、tubular pile、stanchion and other structures; pipe for mechanic、engine、automobile、apparatus and other mechanical accessories.

产品主要用途：石油天然气工业中输送油、气，水；油井套管；输送中、低压水、煤气，油；低压和中压锅炉及机车锅炉、换热器，冷凝器结构中；土木建筑、铁塔、网架、管桩、支柱及其它结构；机械、机车、汽车、器具，其它机械零件。

In this paper, through the practice of solving roll marks on steel pipe, on spiral welded pipe of N820 in the steel pipe factory of Shengli oil-field ManagEment, the reason of roll marks occurence on steel pipe was primarily analysized, and some measures to reduce the roll barks of pipe are put up.

通过在胜利石油管理局钢管厂820螺旋焊管机组上解决钢管压痕问题的生产实践，对管体压痕产生的原因进行了初步分析，并提出减轻钢管压痕的一些具体措施。

In order to meet the 21st century, mankind's most advanced load pipeline demand, Donghong industry representatives took the lead in the country to introduce the most advanced level of today's international steel mesh skeleton polyethylene pipe, high pressure steel wire braided reinforced polyethylene composite pipe, Germany, PP-R pipe , polyethylene pipe, UHMW wear, corrosion, acid and alkali pipe production line and injection molding machine, and through advanced detection methods, excellent product quality, perfect after-sales service, creating a "Donghong" This well-known brand.

为满足21世纪人类对最先进承载管道的需求，东宏实业率先在国内引进代表当今国际最先进水平的钢丝网骨架聚乙烯复合管材、高压力钢丝编织增强聚乙烯复合管材、德国 PP — R 管材、聚乙烯管材、超高分子量耐磨、耐腐蚀、耐酸碱管材生产线及注塑机，并通过先进的检测手段、过硬的产品质量、完善的售后服务，造就了&东宏&这一知名品牌。

In general, the working pressure of steam is not more than 0.8 Mpa and the temperature of air will be below 150℃. The wing radiator consists of three rows of paratactic screw wing pipe mainly. The paratactic screw wing pipe is made through winding 05*10mm of steel belt onto 18mm steel pipe and then zinc hot galvanized. It can also be made with full stainless steel pipe and belt. Model SRL radiator is made of steel pipe and aluminum belt through rolling. Its radiation area in unit length is more than Model SRZ.

翅片式散热器主要由空气流向间的三排并列螺旋翅片管束组成，SRZ型散热翅片管束的加工工艺是反0.5*10毫米的钢带用机械绕片方法，绕在18毫米无缝钢管上，然后进行热镀锌，也可用不锈钢管及不锈钢带制成全不锈钢散热器，SRL型散热器则是用钢管和铝带轧制的翅片散热器，其单位长度的散热面积比SRZ型的更大。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。