rectangular pipe

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We attempt for excellence, company the customers", hopes to be the top cooperation team and dominator company for personnel, suppliers and customers, realizes price share and continual marketing for Welded Rectangular Tube , ASTM A500 , Galvanized Rectangular Steel Pipe , Welcome buddies from all over the earth come to visit, tutorial and negotiate.
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We insist on the principle of development of 'High quality, Efficiency, Sincerity and Down-to-earth working approach' to provide you with excellent service of processing for rectangular pipe, The product will supply to all over the world, such as: Jakarta , Senegal , United Arab emirates , we have complete material production line, assembling line , quality control system, and the most importantly, we have many patents technology and experienced technical&production team, professional sales service team. With all those advantages, we are going to create"the reputable international brand of nylon monofilaments", and spreading our products to every corner of the world. We are keep moving and try our best to serve our customers.
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  • This short video shows how an interactive plate rolling simulation, freely available at, was used with 2nd year Engineering undergraduates at the University of Liverpool. The students, working in groups, had to compete to supply plates for an offshore wind turbine tower at the correct specification and at the lowest possible cost. From the customer’s specification, the students had to:
    * calculate the required plate sizes for each section of the tower
    * select an appropriate steel grade (composition) and rolling schedule to achieve the required mechanical properties
    * work out the suitable slab sizes, bearing in mind that some end and edge trims must be made after rolling
    * roll the plates using the interactive controls within the simulation

    At the end of each run, the students were presented with test-house and production reports, stating whether the required mechanical properties were met, and also the size, number and cost of saleable plates.

    Each result was recorded on the database, allowing the module tutors to monitor the progress of each group.

    This activity is part of the Mechanical and Materials Engineering and General Engineering programmes ( at the University of Liverpool.

    It’s time. You know which one…

    It’s been on your to-do list for a while, right?

    In fact, it’s been staring at you for quite a while. Well, today might be the day to re-do that seat cover for that whole new look you’ve been wanting. It shouldn’t take too long and you have an afternoon to spare. All you have to do is get your supplies and tools out and do it.

    Here’s what you’ll probably need:

    Tools and Supplies:
    Chalk pencil or pen
    Phillips head screwdriver
    Flat-head screwdriver
    Needle-nose pliers
    Glue-carpenter’s type
    Utility knife
    Staple Gun, heavy duty with ¼” staples
    Upholstery-weight fabric or other replacement covering
    Replacement foam or other padding if necessary

    Let’s Do It:

    Turn your seat upside down on a flat surface. Check to see how the seat is attached to the rest of the stool or chair and remove the screws that hold the seat in place. In my case, the screws are directly underneath the seat, attached to a metal plate, but in your case, they may be be small metal brackets near the frame of the chair that hold the screws that you need to remove.

    Set your stool or chair frame aside and place your seat pad face down on a work surface. Check to see how the original cover is attached. In some cases, there is a thin outer cover that will need to be removed first. Usually it’s just stapled on the bottom, so just remove that and check to see what’s underneath. In this case, a vinyl cover has been simply stapled around the edges.

    Check your edge, you may have have room to staple a new cover without removing a lot of staples. In my case, I could remove a lot of staples, but it would take forever, so I just chose to cut off the vinyl along the edge with a utility knife. Discard the old covering, and check the condition of your seat padding. Many times it will need to be replaced, since many foam-type materials can break down and deteriorate over time. Or, you may just want additional padding or batting. Place the old padding over the new padding and trace to get the seat size. Trim excess.

    If you’re satisfied with the padding, place your fabric or other new covering material face down on your work surface. Next, place your seat with the padding face down on top of the material, making sure the seat pad is centered on your fabric. Fold the fabric over the bottom of the seat to figure the seat size of the material. Allow for at least 1 -2″ to fold over and staple to the seat bottom. In this case, I measured about 2.5″ diameter outside of the edge. Measure and mark your fabric in about ten places, then connect the marks to complete the outline of the seat. Cut material along your marked outline. With your material centered on the fabric again, begin turning over edge of material and staple. On opposite side of the seat, stretch to bring material just taut and staple. Do not over-stretch material or you will have wrinkles. Staple another opposite side, halfway in between and then again on the opposite side, making sure material is taut. For example, you can start in a clock-wise manner, beginning at 12 o’clock, then at the opposite side at the six o’clock position, continuing next to the three o’clock position and next at the nine o’clock position. Continue the pattern by evenly stapling in-between where you have stapled, and on opposite sides, until all edges are fully attached. Fold over any extra material and staple flat. Trim any extra material off edge.

    If you’d like an optional outer cover for the bottom to hide any rough edges, trace the finished top again over the wrong side of a lightweight material. Dark colors work best. Cut the material 1″ smaller in diameter. Or, for an even more finished look, keep the original tracing size and sew a ½ – 1″ hem. Place the outer cover over the rough edges of the seat bottom to be sure it fits well. Glue the outer cover to the seat bottom before stapling if you prefer.

    Mark any screw holes, if necessary, in the areas where the seat was attached to the frame. Poke the marks you made for the screws with a nail or awl. Smooth material and staple outer cover to hide the previously stapled seam. Replace screws and reattach seat to rest of stool.

    Have a seat and relax!

    © 2012 J.C. Gary

    Disclaimer: Video and content provided as a public service. Not intended to be a substitute for any professional advice or service.

    Royalty-free music courtesy Adobe.

    We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 StarsBy Johnny from Jamaica - 2015.09.23 18:44
    The customer service staff's attitude is very sincere and the reply is timely and very detailed, this is very helpful for our deal,thank you.
    5 StarsBy Juliet from Russia - 2016.10.13 10:47

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