Main Cables and "the Ropes"
Main Cables and "the Ropes"

8,816 zinc coated steel wire, each a little thinner than a pencil (0.196-inch diameter) were "air-spun" into 19 strands to form each main cable. These strands were then hydraulically compacted into a 20-1/2-inch diameter cable cross section, and outfitted with cast steel cable bands to hold the compacted shape and to receive the vertical suspender ropes.



Each main cable wire loops around one of 19 strand shoes held back to the mass concrete foundation of the anchorages with 4?-inch diameter high strength steel threaded anchor rods. Two anchor rods per strand shoe pass through steel pipe grout tubes, and their nuts bear against an anchor frame at the rear face of the anchorage. Once the full weight of the bridge is bearing on the cables, the steel pipes will be filled with grout to protect the 60-foot length of rod from corrosion.



In addition to the cable bands, which hold suspenders at their proper position along the main cables, there is a unique cast steel fitting at mid-span to secure the cables and deck in the same relative position, thus sharing the burden from longitudinal and transverse displacements of the stiffening truss. This feature, referred to as a center tie, is framed into outrigger struts on the sides of the deck and thus tied into the stiffening truss framing. Since the loads transferred are sizable, the number of bolts necessary to provide adequate clamping force to the main cable required a three-part articulated cable band casting with a total length over 21 feet.



The vertical suspender ropes are 1-5/8- or 1-7/8-inch zinc coated steel wire rope often referred to as Bridge Rope. Typically the suspender ropes loop over the cable bands; however, near the anchorages they are pinned both top and bottom to allow relative rotation as the bridge expands and contracts, and to aid construction. To further mitigate the potential for bending fatigue in the ropes, the suspender brackets nearer the anchorages are located at the bottom chord of the stiffening truss. This maximizes the effective length and minimizes the rotation experienced. Excessive rotation for shorter ropes has been the cause of long-term wire breaks in older suspension bridges, and the arrangement selected overcomes the undesirable situation. http://www.grandvan-steel-wire.com/

Plastic Bag Making Machine Manufacturers from Your Search
Plastic Bag Making Machine Manufacturers from Your Search

Plastic Bag Making Machine manufacturers offer high quality Plastic Bag Making Machine to meet all your Plastic Bag Making Machine requirements.If you are looking for high quality Plastic Bag Making Machine and reliable manufacturers, please click the links below to obtain detailed information, and send your inquiry about Plastic Bag Making Machine right now!

CHERNG HORNG manufactures plastic bag making machine whole plant production solutions for all plastic film and plastic bag making operations. Our production lines include blown film machinery, bag making machines, stretch and cling film production lines (includes rewinder), flexographic printing machinery, plastic recycling extrusion plant equipment, and plastic bag making machines.

Phyllis Co., Ltd. has been devoted to the development of plastic processing machinery and plastic bag making equipment for PP and HDPE woven bags since 1972. We ensure that all our plastic bag making machines will streamline your production, increase efficiency and performance to the highest level, and greatly save you labor.
FOR DAH Industry Co., Ltd. has the experience for 35 years in the design and manufacture PP woven bag production line. Therefore, we have owned good reputation worldwide. We always offer the most advanced packaging machines for the customers and continually improve the level of technologies. The main products are 1. High Capacity Flat Yarn Making Machine 2. 4 / 6 Shuttles Circular Loom 3. Woven Bag Printing Machine (Piece by Piece and Roll to Roll). 4. Auto. Cutting & Sewing Machine 5. Jumbo Bag Processing Equipment.
http://www.snda-cn.com/category/plastic-bag-making-machine-9.html
plastic bag making machine
plastic bag making machine
plastic bag making machine

Side Sealing Bag Making Machine
Side Sealing Bag Making Machine

side sealing bag making machine has been presented above, want more similar products, please click Side Sealing Bag Making Machine BOPP bag making machine,OPP bag making machine heat sealing machine.
Our Side Sealing Bag Making Machine is good in quality and competitive in price. We manufacture Side Sealing Bag Making Machine and supply OEM, ODM service according to your requirement.
If you want more detailed information of this product or related problems, please contact with us, we will reply as soon as possible (general in 24 hours).

It is suitable for doing compound film of three-sides (standing bag, embossing bag)medium-sealing bag, which makes the bag-making procedure working successively. Furthermore, it adopts double photo-electric dviation correcting system, micro-computer controller, color screen display, out-set machinery transmission device, pneumatic blade and hole punching, imported frequency governor, double-step pull, photoelectric tracking as well as double sending and ironing advantages, along with the convenience of operation, accurate fixed position, reliable quality.

Side sealing bag making machine. sealing and cutting bag making machine, heat sealing and cutting bag making machine

side sealing bag making machineis suitible for heat sealing and cutting such material as BOPP,OPP thermal contracting film,etc.And it s ideal for making sock s bag, towel bagand ornament bag,etc.
This machine has so many characteristics as length fixing by computer,photoelectric tracking stable performance(castiron structure)and high speed,etc. And has such functions as automatic gluing punching and lace heat-sealing,etc.
http://www.snda-cn.com/products/opp-side-sealing-bag-making-machine-ID10.html

sleeve plug valve
sleeve plug valve
sleeve plug valve is a kind of plug valve, which utilizes a ported, moving sleeve located between the piston and cylinder wall and rotated or moved up and down by a gear or camshaft driven actuators. A sleeved plug valve having flow-throttling lug members at the ports in the valve body, such lug members constituting raised, island like projections from the walls of the valve chamber located immediately adjacent the side edge of the ports in the direction of throttling or closing plug movement, such lug members extending circumferentially of their respective ports only along such side edge and having a length which is only a minor portion of the total port circumference, and such lug members having a minimum width at their widest point which is a function of the maximum port dimension of the valve.

Principle of opening and closing of the valve
process of opening and closing of the valve.When opening the valve,first of all,turn the hand wheel to make the plug lifted and separated with the sealed surface,the turn the handled by 90 degree to connect the channel of plug th the channel of valve body.So that the valve is opened.When closing the valve,first of all turn the handle by 90 degree to mark the channel of plug vertical to the channel of valve body,and then the hand wheel to descend the plug.So that the valve is closed.
A well established name in the Indian market, we are engaged in manufacturing and supplying highly efficient Teflon Non Lubricated Sleeve Plug Valve. We are manufactured using premium grade of raw material with excellent performance. These are available in various quality attributes.
http://www.vatacvalve.com/Product/PlugValve_Class_250.html

Eccentric Plug Valve Features and Benefits Analysis
Eccentric Plug Valve Features and Benefits Analysis

Welded Nickel Seats
The eccentric plug valve Seat is produced by machining a groove in the Cast Iron body, followed by welding a Nickel seating surface in the groove. After welding, the area is re-machined to provide a smooth, corrosion resistant surface for the plug to seat against. This seat is a minimum of 3mm thick after machining. In addition to the corrosion resistance of the nickel, the welding process creates a hardened zone that aids the seat s ability to resist abrasion.

Oil Impregnated Stainless Steel Bearings
The Eccentric Plug Valve has 300 series stainless steel bearings, making them highly corrosion resistant. The bearing is formed by pressing powdered stainless steel into the bearing shape, which is then impregnated with a lubricant, providing maximum lubricity.

P.T.F.E. Grit Seals.
To prevent grit and debris from damaging the bearing, the Eccentric Plug Valve has P.T.F.E. (Teflon) seals above and below the plug. These seals are held in compression between the plug body and bonnet, sealing the critical bearing area from the ingress of dirt and grit.

Self-Adjusting Stem Seals
Two self-adjusting, wear compensating, pressure energised ‘U’ cup seals are used to ensure a positive stem seal. An ‘O’ ring inside the ‘U’ cup provides the necessary pre-loading to guarantee sealing under low pressure, while the expansion of the ‘U’ cup at higher pressures prevents leakage. This packing is especially well suited to buried, submerged and hard to get to applications. In the unlikely event of stem seal failure these seals can be easily replaced without removing the bonnet from the valve.

Solid One-Piece Ductile Iron Plug
All Viking Johnson Eccentric Plug valves use solid, one-piece ductile iron plugs to ensure maximum flow capacity. Due to the higher strength of ductile iron (in comparison to cast iron) the thickness of the plug is reduced, resulting in a much larger flow way and greater flow capacity.

Multi-fit Bonnet
The bonnet of all Eccentric Plug Valves are drilled and tapped to accept a close-coupled gearbox or actuator and mounting kit. This can be accomplished on-site, even with the valve in service.
http://www.vatacvalve.com/Product/PlugValve_Class_250.html

Butterfly Valves
Butterfly Valves

ABZ manufactures a series of high performance butterfly valve ranging from 2-48 inches with 150-600 psi. Our valve design is ideal for manual or automated actuation and is used for industrial, chemical, HVAC, and food and beverage applications. An ABZ high performance butterfly valve can be installed with a manual hand gear, electric actuator, or a pneumatic actuator to fit any of your projects or design specifications.

Designed for critical applications in chemical, hydrocarbon processing, pupl/paper, water/waster & HVAC, the DeZURIK High Performance Butterfly Valve (BHP) provides exceptional long, trouble-free lift, reducing total cost of ownership. Rigorously tested to meet demanding industry performance requirements. High Performance Butterfly Valves are designed for shutoff and throttling control of liquids and gas. The dynamic PTFE seat provides bubble-tight shutoff in both directions. The single offset disc design provides lower torque and longer cycle life. NACE trim available.
Fisher Posi-Seal butterfly valves serve a broad spectrum of applications in industrial processes. Posi-Seal high performance butterfly valves are specifically designed for accurate throttling control. As well, Posi-Seal valves use system pressure to achieve true, dynamic sealing.

These valves are also suitable for low pressure and vacuum conditions. Whether you are looking for accurate process control, Fire Safe isolation, or Cryogenic expertise, Posi-Seal has a control disc and seal technology for your application.
http://www.vatacvalve.com/Product/ButterflyValve_Class_264.html
high performance butterfly valve

Floating Ball Valve
Floating Ball Valve

A floating ball valve is a valve with its ball floating (not fixed by a trunnion) inside the valve body; it drifts toward to the downstream side and tightly pushes against the seat under the medium pressure to ensure a reliable seal. The floating ball valve is a simple design with good sealing performance relying on the seat material to withstand the workload as the sealing pressure is barred by the seat ring. Floating ball valves are mainly used in low to mid level pressure applications. FBV manufactures the floating ball valve class 150 to class 600.

The blow out proof design for the stem assures that even if the pressure in the body cavity has risen accidentally and the packing flange breaks, the stem cannot be blown out by the medium. The stem features a backseat, assembled from within the body. The sealing force against the backseat gets higher as the medium pressure becomes higher. Therefore, a reliable stem seal can be assured under variable medium pressures. The stem cannot be removed during service.
Yongjia Weilan Flow Control Equipment Co.,LTd. founded in 1989, located in Oubei Town, Yongjia, Wenzhou, Zhejiang, China, It is a professional valve manufacturing enterprise, which integrates R&D, manufacture and sales. main products including: ball valve, gate valve, globe valve, check valve, stainless steel ball valve, floating ball valve, trunnion mounted ball valve and so on. The company covers total area of 220,000m2, now has 252 staff members and 15 senior engineers and technicians.
http://www.vatacvalve.com/Product/FloatingBallValve_Class_240.html
Floating ball valve
floating ball valve
floating ball valve

Trunnion Ball Valves
Trunnion Ball Valves

Global Valve and Controls trunnion design ball valves incorporate the use of upper and lower supports (GVC trunnion plate system) to retain the ball under pressure. Global Valve and Controls API 6D trunnion ball valves have a secondary sealant injection system for stem seals and seats in the event of providing a temporary seal to an otherwise damaged area. The Global Valve and Controls trunnion ball valve design using the upper and lower trunnion plate system essentially doubles the safety and reliability of a standard trunnion ball valve.

The Global Valve and Controls trunnion plate system feature is standard on all Global Valve and Controls API 6D trunnion ball valves from 4” and up (ANSI 600 through 2500). It permits the valve to be installed in either direction, since the trunnion prevents the ball from shifting -- or worse, blowing out – under high pressure applications.

Another important benefit of the Global Valve and Controls trunnion plate system design is that it allows the ball to only rotate a quarter turn with no hysteresis thus more control and reliability under extreme applications.

Global Valve and Controls standard API 6D trunnion ball valves use materials in accordance with NACE MR0175/ISO15156. In order to ensure compliance customers must provide application specific operating conditions.
The trunnion ball valve is used for cutting or connecting the medium in various pipelines of class150-class2500 and pn16-pn320. It can be suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, acetic acid, oxidizing media, urea and etc. It is widely used in such industries as chemical industry, petroleum, natural gas, metallurgy and etc. The driving modes of the trunnion ball valve include worm and worm gear driving, manual driving, pneumatic driving and electric driving. The trunnion ball valves generally adopt flange connection, and butt-welding connection is also adopted. The seat can be soft seal seat or metal hard seal seat.
http://www.vatacvalve.com/Product/TrunnionBallValve_Class_241.html
Trunnion Ball Valve
Trunnion ball valve
Trunnion ball valve

Installing an in line hose thread ball valve is quick and easy
Installing an in line hose thread ball valve is quick and easy

Simply screw the ball valve onto the desired water source you need to control. Hand tighten the ball valve to make a water tight seal.

To operate, simply move the control lever to the desired position. When the lever is in line, the ball valve is fully opened. When the lever is parallel, the ball valve is fully closed.

The flow of water can be controlled by moving the lever back and forth.

The BV75 In Line Hose Thread Ball Valve is just one in a full line of professional irrigation product available from Irrigation Direct.
View Female thread ball valve products from over 31 Female Thread Ball Valve manufacturers, suppliers, exporters and factories. The following lists Female Thread Ball Valve manufacturers, suppliers, exporters, factories and Female Thread Ball Valve products all over the world.

Hiexpoerter.com help you Find complete details about Female Thread Ball Valve,Buy cheapest Female Thread Ball Valve from china Female Thread Ball Valve suppliers,manufacturer,and Female Thread Ball Valve wholesaler,and you can OEM high quality Female Thread Ball Valve
Hiexpoerter.com,You could find structure information which could help you to evaluate the Female Thread Ball Valve suppliers, for example Female Thread Ball Valve quality information, Female Thread Ball Valve supplier type, Female Thread Ball Valve information publishing time and so on. you can find china Female Thread Ball Valve,ball valve ,valves ,ball valves wholesale shop and Female Thread Ball Valve retail shop also.
http://www.vatacvalve.com/Product/BallValve_Class_257.html
Thread ball valve

Installing an in line hose thread ball valve is quick and easy
Installing an in line hose thread ball valve is quick and easy

Simply screw the ball valve onto the desired water source you need to control. Hand tighten the ball valve to make a water tight seal.

To operate, simply move the control lever to the desired position. When the lever is in line, the ball valve is fully opened. When the lever is parallel, the ball valve is fully closed.

The flow of water can be controlled by moving the lever back and forth.

The BV75 In Line Hose Thread Ball Valve is just one in a full line of professional irrigation product available from Irrigation Direct.
View Female thread ball valve products from over 31 Female Thread Ball Valve manufacturers, suppliers, exporters and factories. The following lists Female Thread Ball Valve manufacturers, suppliers, exporters, factories and Female Thread Ball Valve products all over the world.

Hiexpoerter.com help you Find complete details about Female Thread Ball Valve,Buy cheapest Female Thread Ball Valve from china Female Thread Ball Valve suppliers,manufacturer,and Female Thread Ball Valve wholesaler,and you can OEM high quality Female Thread Ball Valve
Hiexpoerter.com,You could find structure information which could help you to evaluate the Female Thread Ball Valve suppliers, for example Female Thread Ball Valve quality information, Female Thread Ball Valve supplier type, Female Thread Ball Valve information publishing time and so on. you can find china Female Thread Ball Valve,ball valve ,valves ,ball valves wholesale shop and Female Thread Ball Valve retail shop also.
http://www.vatacvalve.com/Product/BallValve_Class_257.html
Thread ball valve

packing machine
packing machine

As an integrated manufacturing company, Qingdao Feifan Packing Machinery Co., Ltd. mainly focuses on R&D, production, marketing and service of packing machine and related products. Our products include horizontal packing machines ,shrinking wrapping machines,box-motion horizontal packing machines and cellophane overwrapping machines. They are intensively used in the food, sweets, cosmetics and pharmaceutical industries, for example, they can be used in medicine, instant noodle, milk, biscuit, bread, cake, frozen food, paste, cosmetic product, sausage ,soap packing and so on..

Our company always takes the quality as the life blood for living and man power as the base for development. We have introduced the technology & drawings and cells from developed countries. In addition, we have developed computer-controlled automatic packing machine based on internationally advanced technology. Depending on the advanced technology and excellent after-sale service, we have established long-term business relationships with domestic and overseas famous companies. We have been authorized to be the exclusive manufacturer of packing machines for them.

Looking into the future, we will hold the idea of "honest cooperation, develop together", insist on the spirit of "honesty, integration, practice and innovation" and implement the tenet of "meeting your demand as our pursuit". All these ensure constant development.
http://en.newideabest.com/proshow.asp?proid=194
pouch packing machine
wet tissue packing machine
vertical packing machine

Metal Seated Butterfly Valves
Metal Seated Butterfly Valves

The world’s first all metal seat to attain a Class VI seal rating, the ultra-precise, stainless steel disc is a durable perfect seal providing outstanding corrosion resistance.

Engineered for the most demanding environments, including high temperature and high pressure flow control, our all metal seated butterfly valve are used for oil & gas, thermal, steam, and shipbuilding applications. Revolutionary all metal butterfly valves create a bubble tight seal; the seat and body are produced from the highest-grade metal alloys.

Engineered to higher standards to provide the best performance possible, our multi seat knife gate valves offer all metal knife gate and resilient NBR seat (rubber) knife gate models.

Depending on the flow control requirements of the job, the knife gate valves we offer feature the stainless steel seat and the easily replaced flexible NBR seat options. Creating a metal seated butterfly valve and featuring an innovative inverted packing box design, our knife gate valves are suitable for use in oil & gas, chemical, power, waste water treatment plants applications.
Manufactured specifically for the demanding conditions of the offshore projects, our mud system valves provide solutions for the drilling applications.

Engineered to match the tough conditions of underground drilling, HIFLY’s knife gate mud valves eliminate loss of fluid and enable circulation down the drill string.
http://www.vatacvalve.com/Product/ButterflyValve_Class_264.html

不锈钢铸件在切削加工与产生摩擦
不锈钢铸件在切削加工与产生摩擦

在企业生产不锈钢铸件切削加工过程中，必须使切削加工的不锈钢铸件和工具之间产生相对摩擦运动。



也就是说不锈钢铸件在切削加工的共性就是把切削工具和工件安装在机床上，由机床使切削加工不锈钢铸件和工件之间产生确定的相对运动，从而切削出合乎要求的不锈钢铸件。各种不锈钢铸件切削加工中的运动，按照不锈钢铸件在切削过程中所起的作用，可以分为主运动和进给运动两种。这两个运动的向量和，称为合成不锈钢铸件切削运动。所有切削运动的速度及方向都是相对于工具定义的。

主运动是形成不锈钢铸件在切削加工速度上消耗主要动力的运动。所谓主运动指的是由不锈钢法兰和人力提供的主要运动。主运动促使切削工具和工件之间产生相对运动，从而使不锈钢铸件切削工具前面接近工件。常见的不锈钢铸件切削机床的主运动如下：
车床；工件旋转运动
钻床：钻头旋转运动
铿床：刀具旋转运动
牛头刨床：刨刀直线运动
龙门刨床：工件随工作台的直线运动
铣床：刀具的旋转运动
拉床：刀具的直线运动
磨床：砂轮和磨具的旋转运动
在不锈钢铸件加工或手动切削加工，它配合了不锈钢铸件车削加工依次地或连续不断地切除边缘毛屑，同时形成具有所需几何特性的已加工表面。加工可以是间歇的，也可以是连续进行的。

不锈钢铸件切削加工过程中的重要部分、更是产品切削加工的主要工艺参数，它不仅影响不锈钢铸件的加工精度和表面粗糙度，而且对设备、刀具和劳动生产率等都有重要影响。 http://www.yyzzcn.com/


不锈钢铸件

移动式登车桥
移动式登车桥

移动式登车桥是与叉车配合使用的货物装卸辅助设备，可根据汽车车厢的高低调节高度，叉车可以直接通过本设备驶入车厢内部进行货物的批量装卸，仅需单人作业，即可实现货物的快速装卸。它使企业减少大量劳力，提高工作效率，获取更大经济效益。

特点：

台面采用特制的菱形网格板有可靠的强度，能保证长期使用而不变形。它的菱形网状结构，充分保证了卓越的防滑性能，使叉车有更好的爬坡性和可操纵性。即使在雨、雪天气，仍能保证正常使用。

可调节长度的索链能方便地钩住货车，使移动式登车桥与货车始终紧密贴合。

采用手摇液压泵作动力，勿需外接动力电源即可轻松实现登车桥的高度调节。

配置的刹车垫可有效防止货车装卸时登车桥移位。。

结构：

采用特制异型钢管，台面采用特制的菱形网格板，防滑(网)板。它的波形钢格网状结构，充分保证了卓越的防滑性能，使叉车有更好的爬坡性和可操纵性。配置的刹车垫（可有效防止货车装卸时液压登车桥移位）。可调节长度的索链能方便地钩住货车，使登车桥与货车始终紧密贴合.

用途：

该设备一端与货台等高，另一端搭在车厢后缘上，并能根据不同的车型及装车过程中车厢的变化，自动调整高度。该产品可根据用户的不同需要，在外形尺寸、承受载荷等方面作特殊设计。 登车桥可广泛地应用于邮政、粮食、车站码头、海洋运输等行业。

移动式登车桥选用材质：

移动式登车桥用于现场无装卸货平台或需要流动装卸货物的场所。如果物流现场没有装卸货平台，作为补救措施，移动式登车桥是非常适用的方案之一，移动式登车桥相当于一个移动的钢结斜坡，叉车同样能直接驶入卡车车厢内部进行批量装卸作业。只需单人操作，不需动力电源，即可实现货物的安全快速装卸。

1、主体支架：采用特制异型钢管。

2、台面材料：台面采用8mm防滑网。

3、油 缸：高精度耐磨油缸。

4、轮 胎：高强度耐负荷高压轮胎。

5、液 压 油：32号抗磨液压油（日本华尔兹）

6、液压油管：高压双层钢网橡胶管

7、配置的刹车块（可有效防止货车装卸时登车桥移位）。

8、采用手摇液压泵作动力，（勿需外接动力电源即可轻松实现登车桥的高度调节）

9、可调节长度的索链能方便地钩住货车，使登车桥与货车始终紧密贴合。 http://www.sz-yatai.cn/productinfo/detail_cn_4_8_75.aspx

印刷带在标签印刷中的作用
印刷带在标签印刷中的作用

　　柔性版印刷过程中，印刷带的应用一直是大家比较关注的问题，来自德莎胶带上海有限公司的吴联祯先生为我们介绍了贴版胶带的选择和使用问题。
　　随着我国国民经济的发展，特别是食品、日化、洗涤用品、医药、化妆品、家电及小家电、物流等行业的发展，标签产业相应有了一个高速增长，年增长率维持在15%～20%，成为印刷行业中发展速度最快的子行业。
　　柔性版印刷是一种使用柔性版材、通过网纹辊传递油墨来实现印刷的技术。与胶版印刷、凹版印刷及凸版印刷等传统印刷技术相比，柔性版印刷具有设备投资少、制版周期短、印刷速度快、对承印物的适应性强、可使用环保型油墨等优点。目前，在欧美的包装印刷领域，柔性版印刷的普及率很高，在美国甚至可以达到90%。
　　与其他印刷技术不同，柔性版印刷需要将版材粘贴在版辊或套筒上，因此这就需要用到贴版胶带。
　　印刷带的作用主要是固定印版的位置，保证印版在印刷过程中不脱落、不移位，并且缓冲版材受到的部分压力，提升印刷效果。将版材贴在版辊或滚筒上是印刷过程中非常重要的一个环节，因此选择合适的贴版胶带非常重要。
　　柔性版印刷中的贴版胶带主要是双面压敏胶带，根据基材的不同可以分为泡棉类和非泡棉类胶带。非泡棉类胶带的基材包括薄膜或布基等，这类胶带在标签印刷中的应用较少，因此本文主要对泡棉胶带的选择做一些介绍，同时针对客户在使用过程中常遇到的问题进行探讨。
http://www.nbhuas.com/
宁波印刷带