Want Flanges? Just Name the Type

February 12th, 2011

There are many uses for flanges and you may well require such objects for your business. If you do, you should check out the selection we have here at Chemipetro. Whether it is pipe flanges or another version of the objects you are after, simply browse our website to see what you can get.

Flanges are the edge, rim or collar of a pipe or wheel and they are used to strengthen the objects, hold them in place or to attach them to other items.

In the petrochemical industry and other similar fields, pipe flanges come in very handy and are an integral part of many plants and production facilities.

However, it can be tricky to source the ideal types of such things because of their precise nature.

The good news is that here at Chemipetro, we understand the importance of getting the ideal flange and that is why we go to such great lengths to create ones that are tailored to your needs.

Whether you need a weld-neck, blind, slip-on, lap-joint, screwed, orifice, spectacle or any other kind of fitting, we may well have what you are after.

Meanwhile, you can also choose the grade of the products and the facings. So, if you would like a raised face, flat face, male/female, tongue/groove or ring-type joint, you should be able to get what you are seeking.

We can even create offerings based on your drawings. So, for the ideal pipe fittings, make sure you get in touch with us and, whatever you do, don’t settle for second best.

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The Nut and Bolt Problem

August 15th, 2010

One of the most fundamental problems faced in any industry is how to join two pieces of material together. A layman asked this question would probably immediately think of glue. This is possible even with steel, where welding is effectively gluing two pieces of metal together.

There are however two fundamental problems with any sort of glued joint. The first, the joint is only as strong as the glue itself. To help overcome this with welded joints the ends of the pieces are shaped to form a V. This gives the weld a greater surface to form on and so make the bond stronger.

The second problem is that any glued joint is permanent and does not allow for anything to be dismantled should maintenance be required.

To dismantle a joint it should be connected by a removable fastening. This is where the humble nut and bolt come in. By providing flanges on the end of a pipe or a pipe fitting, and by bolting the two flanges together, a strong but removable coupling can be achieved.

But what sort of nut and bolt should be used? In concept they may all be the same but in practice they can be very different, from a simple threaded rod which is cut to length, to a 12 point ferry head unit. The choice of nuts can also be bewildering from the simple hexagonal to a bi hexagonal 12 point self locking type.

Whatever your need we at Chemipetro can provide a wide range of fastenings to meet your specific requirements even if it is a non standard and unique type.

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The Problem with Biodiesel

July 12th, 2010

It used to be the case that we consumed fuel with no consideration to the fact that one day it would all be gone. Apart from times of national shortage such as wars, there always seemed to be more than we needed.

However over recent years we have perhaps become more conscious of the fact that oil is a limited resource and we have started to look for new ways to provide the fuels which are such an integral part of our modern economy.

In recent years this has seen a big rise in the development of biofuels. These are oils made from plant material and the oil is extracted by ‘pressing” which is a traditional method. However the plant material can be fermented to produce bio-alcohol. These can then be used either as direct fuels or more commonly can be blended to produce biodiesel which produces less toxic emissions but maintains the engines performance.

One problem with producing these fuels however is that they have different chemical properties to mineral oils and can have a corrosive effect on materials used for pipe fittings that are not affected by regular fuels.

Some types of plastic such as high density polyethylene (HDPE) are not affected but polyvinyl chloride (PVC) is slowly degraded. Metals are also affected, with biodiesel having an effect on copper-based materials such as brass as well as zinc, tin, lead, and cast iron. Stainless steels and aluminium are however unaffected.

Chemipetro produce a wide range of pipe fittings and flanges in duplex and super duplex stainless steels which are compatible for use with these new fuel technologies.

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