Dec 10
17
RO water and pipe corrosion
We understand that acidic RO water is not harmful to the human body. However, what about RO water in metal piping instead of the human body? People have found that RO water corroded their metal piping. What would be your recommendation to prevent such corrosion?
Oct 10
30
About Hot Tapping
Pipefreezing isn’t always the best solution, and in these cases, APS is able to offer clients an Under Pressure Drilling, or ‘Hot Tapping’ service.
Under pressure drilling is employed as a means of providing a branch connection to a live pipe in constant operation, where the consequences of a shutdown would not be practicable. This method uses a short section of pipe, to which an isolating valve is either welded or fitted mechanically. After fitting – and with the valve in the open position – the pipe is drilled to the maximum permissible size through the valve. On completion of the drilling operation the valve is closed, and the drilling equipment removed.
A comprehensive range of optional fittings is available, including corporation cocks, ferrules, sample points and various type of valves.
This process can be completed without leakage or loss of flow and can be used on almost any type of pipe (iron, steel, plastic, concrete) carrying liquids at high temperatures and under pressure.
Sep 10
16
Pipe Expansion
All pipes will be installed at ambient temperature. Pipes carrying hot fluids such as water or steam operate at higher temperatures.
It follows that they expand, especially in length, with an increase from ambient to working temperatures. This will create stress upon certain areas within the distribution system, such as pipe joints, which, in the extreme, could fracture.
Sep 10
16
Gas Piping and Ventilation
Piping
The gas piping from linking the gas company’s meter to your appliance belongs to you, the customer, and is therefore your responsibility. Be sure it is the proper kind of pipe and that it is installed, tested, and maintained in accordance with applicable state and local codes. The piping should be installed by a qualified person and inspected by local building officials.
Sep 10
9
What is Sandblasting?
Sandblasting is a general term used to describe the act of propelling very fine bits of material at high-velocity to clean or etch a surface. Sand used to be the most commonly used material, but since the lung disease silicosis is caused by extended inhalation of the dust created by sand, other materials are now used in its place.
Sep 10
8
Iraq natural gas pipeline
Iraq has a major Natural Gas Pipeline with the capacity to supply around 240 MMcf/d to Baghdad from the West Qurna field. The 48-inch line was commissioned in November 1988, with phases II and III of the project never completed due to war and sanctions.
Sep 10
7
MIG Welding Stainless Steel
MIG Welding Stainless Steel
Source: Adapted from The Procedure Handbook of Arc Welding. The Lincoln Electric Company, 1994.
Although welding stainless steel may not be as difficult as welding aluminum, the metal does have its specific properties that vary from your more common steels.
When MIG welding on stainless, you usually have three choices of transfer depending on your equipment: spray-arc, short-circuiting, or pulsed-arc transfer.
Piping = compound noun for pipe work in general which includes a plurality of pipes, joints, valves, unions and other related equipment.
