Making Ends Meet
In the construction industry there is a very famous photograph of a bridge construction. The construction programme called for the bridge to be built from both sides at the same time and meet in the middle. Progress on the construction of both sides continued well until the contractor was getting ready to install the last section to make up the gap. It was only then that they realised that there had been an error in the surveying on each side and the two sides were actually at different heights, creating a step.
This is something where those not involved can all laugh, but it can be a relatively simple mistake to make. When designing and installing a new pipeline the complete installation is uniformly specified and installed, ensuring that all of the pipe lines, pipe fittings and flanges are compatible.
When carrying out a modification to an existing pipeline however, things can become a little trickier. First of all the age of the pipe has to be determined as this can help to establish if it was built to imperial or metric standards.
Secondly the size of the pipe has to be determined. Pipes can be specified in size by their outside diameter (O.D.) or by their nominal bore (N.B.) Depending on the wall thickness these will give different pipe sizes for a given measurement. So measuring the existing pipe but then selecting from the wrong pipe tables could mean that the new section of pipe may be the same size on the outside but completely different on the inside which will make it difficult to fit and could cause a restriction in the flow.
We at Chemi Petro manufacture pipes to a range of sizes, standards and wall thicknesses and to O.D and N.B. dimensions so you will be sure to get the right product. Just make sure you measure it correctly in the first place.
Questions and Answers
When it comes to the oil, gas and petrochemical industries nobody would feel safe unless manufacturers used anything less than the best materials and machinery to manufacture pipes, pipe fittings or pipe flanges, for example.
One of the major breakthroughs early in the 20th century was the development of stainless steel via the introduction of chromium into the alloy mix to help protect the steel from both air and water and therefore corrosion. Since then many different types of stainless steel have been developed, all of which feature prominently in the manufacture of industrial pipes and flanges
Global environmental changes are undoubtedly going to affect everyone's lives in some way and that impact needs to be mitigated as much as possible with plenty of forward thinking by industry leaders.
The petrochemical, gas and oil industries demand extremely high levels of strength and corrosion resistance in the flanges, pipes and equipment they use. Undersea gas and oil pipes are particularly vulnerable to stress cracking and corrosion from salt water. For this reason, specialised stainless steel alloys and even titanium are used in the manufacture of the pipes and flanges which hold them together.
Prevention is always better than cure when it comes to the accidental discharge of volatile or hazardous materials. It is clearly self-evident that well-planned.
When planning the installation of an industrial pipe network, ether on a large or small scale, there are three vital points that need consideration. Firstly, the pipes, pipe fittings and flanges should be made from a material most appropriate to the purposes for which they are intended.
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