Installation of systhetic sheet piling

Vinyl Sheet Piles can be installed in the same way as steel sheet pile. Due to its low weight, installation goes easier and faster. Also the transport and removal is easier.  This results in lower costs for your project. Synthetic sheet piling are ideal for revetment and shore protection. As they do not rust, this is an ideal solution for public areas and embankments.

Installation guidelines

The method of installation depends on:

  • soil composition
  • obstacles
  • height
  • installation depth

Vibrating Plate

The common way to install a sheet pile is with a vibrating plate. Mounted on a crane or excavator, the sheet pile is driving into the ground.

Injection

Injection is an installation method which is used in compact or highly dense soil. The soil is loosened by water injection at the toe of the sheet pile.

Pressing

Sheet pile pressing is noise-less and vibrating-free which makes this installation method suitable for urban areas. This method is depending on the type of sheet piling and the soil composition.

(This article comes from JLD international editor released)

LSAW Steel Pipe

The use of LSAW:

LSAW steel pipe has large diameter and wall thickness, resistance to high pressure, resistance to low temperature and strong corrosion characteristics. When constructing high strength and toughness, high quality oil and gas pipeline over long distances,what is required is mostly large caliber straight double submerged arc welding joints. According to the API standard provisions, LSAW is the only designated for tube type when passing through the cold region, submarine, the urban population dense area of 2 kinds, 1 region in the large oil and gas pipeline.

(This article comes from carbon-pipe.com editor released)

JFE STEEL LINEPIPES FOR NORTH SEA GAS PROJECT

JFE Steel Corporation announced that it has won a contract together with Marubeni-Itochu Steel to supply 2,200t of linepipes to Statoil Petroleum, a Norwegian oil and gas company. The linepipes include 1,400t of MightySeam® electric-resistance-welded (ERW) steel pipes and 800t of 13% chromium stainless seamless pipes. JFE Steel produced the MightySeam steel pipes at its Keihin District facility within the company’s East Japan Works and the 13% chromium seamless pipes at its Chita Works. They were shipped to Statoil’s Gullfaks Rimfaksdalen Project in June 2015.

The project will use pipe-in-pipe technology and the reel-based method to lay the pipes. JFE Steel will supply both inner pipe (13% chromium seamless pipe) and outer pipe (ERW pipe) to Statoil at the same time. The reel method requires strict manufacturing specifications.

Compared to conventional products, JFE Steel’s proprietary MightySeam boasts dramatically robust weld toughness that remains effect even at temperatures below -50°C. JFE Steel uses proprietary advanced processes to control the morphology and distribution of oxides emitted during welding, and then phased array ultrasonics to check for flaws along each weld’s entire length on a real-time basis.

JFE Steel’s 13% chromium seamless pipe offers strong resistance to CO2 corrosion and hydrogen sulphide (H2S) degradation. In addition, it reduces maintenance costs and eliminates the need for environmentally harmful chemicals to inhibit rust. It also is cheaper than duplex stainless steel pipe containing separate layers of higher-percentage 22% and 25% chromium stainless, so it helps to reduce costs.

(This article comes from DUPLEX WORLD edit released)

Reinforced concrete sheet pile cofferdam

Reinforced concrete sheet pile suitable for clay soil, sandy soil and gravel soils riverbed.

Sheet pile section shall meet the design requirements. Board pile tip angle depends on the extent of the hard soil. Shen man board gravel pile head should be added stiffening steel or steel.

Production of reinforced concrete sheet piles, the application stiffness template tenon joints should be straight, close together. Such as water jet center with sink, when the sheet pile prefabricated, should stay shoot water channel.

Reinforced concrete sheet pile punched, place, position control, and removal can be performed in accordance with 4.2.4 related content.

(This article comes from 筑龙建筑知识 edit released)

Reinforced concrete sheet pile

Reinforced concrete sheet piles have high strength, rigidity, easily obtained, the advantages of simple construction, its shape can be designed according to need, and-groove joints waterproof structure can be solved, as compared with steel sheet pile without regard to pile pulling problem, so the base pit project occupies a place in the diaphragm walls, bored pile retaining wall before the row has not yet developed, the basic foundation pit structure using steel piles and concrete sheet pile.

As the domestic long been limited to the sunk pile hammer, hammer and limited equipment capacity, pile size, the length is limited, apply a limited excavation depth, reinforced concrete sheet piles of applications and development has been in the doldrums. With the development of pile driving equipment, and methods other pile hammer outside added hydraulic pile, high pressure water pile supporting cantilevered manner from simple, the anchor development to ramp anchor and the multi-layer support, etc. various forms of reinforced concrete sheet pile to bring a wide range of applications.

(This article comes from 百度百科 editor released)

Installing gas piping

1. Determine proper size

Proper sizing of the pipe is important so that each gas appliance receives enough gas to perform properly. Each appliance has a minimum input demand in BTUs per hour. The chart below gives some examples of typical BTU demands. Look at the chart on the back of this insert to assist you in determining the proper pipe size for your job. To convert from BTUs to cubic feet per hour divide BTU by 1100 (example: 50,000 BTU by 1100 = 45.45 cubic feet of gas per hour). See the example on the back of this insert to help further illustrate this. To get BTU from cubic feet, multiply cubic x feet 1100 (45.45 cubic feet x 1100 = 50,000 BTU.)

2. Approved gas piping fitting materials

Black iron and corrugated stainless steel (CSST) are commonly used approved materials. CSST requires certification from the manufacturer for anyone who is going to purchase and install the material.

3. Cutting pipe

If you are cutting iron pipe, you must ream the cut of your pipe so you maintain the full inside diameter of the pipe.

4. Special instructions

Do not use ground joint unions except directly at the meter or after the shutoff valve at the appliance. Each place where you will have a gas appliance must have a gas shutoff valve. Within the City of Seattle only, any person who installs gas piping on property not under their ownership must possess a Seattle Gas Piping Mechanic License. All gas piping installations require a permit and inspection.

5. Testing

Testing the system is your responsibility. The inspector does not perform the test or provide any of the equipment necessary for the test, including test gauges.

An air pressure test is required. The test pressure shall be at least 1 ½ times the working pressure, but no less than 3 pounds per square inch (psi). The test duration shall not be less than 10 minutes. The piping system shall withstand the test pressure specified without showing any evidence of leakage or other defects. Mechanical gauges used to measure test pressures shall have a range such that the highest end of the scale is not greater than five times the test pressure. For instance, a 3 psi test will require a maximum 15 pound gauge. A 10 psi test could be performed using a 50 pound gauge, but not a 100 pound gauge. The piping system shall be under test (pressurized) and the test gauge visible at the time of inspection. Where the gauge does not indicate the minimum pressure required for the test, or any reduction of test pressures as indicated by pressure gauges during inspection shall be deemed to indicate the presence of a leak.

If there is a drop in pressure, check for leaks. Check for leaks by filling a spray bottle with soapy water and spraying the solution on the pipe, where it meets the fittings. Bubbles show a leak and you should repair it appropriately. Continue this process until you have no leaks. Do not use an open flame to test for leaks.

6. Inspection

At the time of inspection, be sure to leave all of the gas piping exposed so the inspector can look at the whole system.

(This article comes from King County editor released)

Are Plastic Water Pipes Safe?

“Is PVC piping safe to use for drinking water? I have used it to run to my house, and it has a slight plastic taste. Can you advise if it’s safe, and if the plastic taste will go away?” -Mathew

Hi Mathew,

The gold standard for years has been copper pipe, with its only known drawback from a heath standpoint being the lead based solder that was used in the joints until 20 years ago when it was banned. Those living in older homes should have their water tested to see if lead is a problem.

Plastic pipe such as PVC (polyvinyl chloride, used for cold water only), and CPVC (chlorinated polyvinyl chloride, used for both hot and cold water) have been around for years, and both are approved for use with drinking water. Neither can be described as environmentally friendly from a production or recycling standpoint, however, and the glue used to join them together contains some strong solvents as well.

There is some concern about the leaching of chemicals that can give water a plastic taste, though the taste usually improves after a few months. Safety issues are mainly considered a concern in PVC pipe that was manufactured before 1977. While I’ve not seen any compelling evidence of the health risk of drinking water from PVC or CPVC plumbing, there is always the possibility that something will turn up in the future.

Flexible PEX (cross-lined polyethylene, used for both hot and cold water) tubing is becoming the pipe of choice for plumbers today, since it’s easy to install. It, too, can impart a plastic taste to water that goes away with time, but since it isn’t glued together, there are fewer toxic solvents used in installing it. PEX tubing, PVC pipe, and CPVC pipe marked “NSF-61” or “NSF-PW” indicate that they have passed testing for potentially harmful chemicals leaching into the water.

Another option is to install a water filter to remove chemicals present in the water.

(This article comes from Today’s Homeowner editor released)

Casing, Tubing for Wells, Oil Pipe, Oil Pipeline

Usage: Tube for conveying gas, water, and oil in both and natural gas industries etc.

Casing: Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.

Tubing: Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as “upsetting” is applied to thicken the pipes.

(This article comes from Hunan Great Steel Pipe editor released)

PETROLEUM PIPELINE WIDE APPLICATION

Petroleum pipeline is suitable for furnace tube, heat exchanger and pipe seamless steel pipe of oil refinery factory. The standard is GB9948-88. Petroleum pipe is a kind of strip steel with a hollow section and no seams around, while the petroleum cracking tube is a kind of economic cross section steel.

Petroleum pipeline is widely applied in manufacturing structure and mechanical parts such as petroleum drill pipe, auto transmission shaft, bicycle frame and steel scaffolding of construction using. In addition, the oil petroleum cracking tube is used to produce annular parts, which not only can improve the material utilization, but also simplify the manufacturing process and save material and processing time.

For example, the rolling bearing ring and jack sets have been widely made of steel pipe. Due to different shape of cross section, the petroleum pipe is divided into round tube and section tube. Under the condition of equal circumference, the area of oil pipe is largest and can deliver more fluid.

Petroleum pipe is used in oil well, gas recovery, water injection and acidizing fracturing. Casting tube is applied in drilling into well as lining in order to prevent the well collapse of the pipe. Coupling is used to connect two root with threaded pipe.

(This article comes from Anson steel edit released)

Hydraulic Pipes Bender

Hydraulic pipes bender suits for water pipe, wire conduit, gas pipe, thick steel conduit, Max. Bending angle is 90°. 1/2″~2″ can be one shot, 2 1/2″~3″ must be bended by moving the tube 3-5 times. Bending shoes are light weight, heat-treated aluminium alloy. Bending shoes above 3″ are made by good tractable spheroidal graphite cast iron, strong and unbreakable. Choose suitable model according to the pipe size. DO NOT use big size model to bend small size pipe!! 4″ pipes must be bended by moving 5-10 times instead of finishing twice, otherwise pipes depressed or the bending shoes damages occur.

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(This article comes from weamax.com edit released)