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Technical Queries

Which coating is more protective coating for carbon steel pipes?

Ashtapad Overseas provides numerous coating options to all our buyers. A coat forms a protective layer around a pipe. Thus, effectively eliminating corrosion and secondary defects like application disruptions, cracks, or even explosions, which could be catastrophic environmentally or for human life. Carbon steel pipes have superior hardness properties and can have a tensile strength in the range between moderate to high. However, these pipes lack corrosion resistance properties. To combat wearing or decay, we offer many customized solutions in the form of surface treatments or coating. For example, FBE - or also known as Fusion Bond Epoxy, Scotch Coating, Synergy Wrap, or Fletcher Coating, Spiral Wrap, and Galvanizing are coatings that are predominant on carbon steel pipes. They are particularly useful in an industry like construction and as reinforcement steel. To get a clear picture of the various surface treatments and their suitability for your application, you can get in touch with us for more details.

Where is a carbon steel seamless pipe used?

Carbon steel pipes are tout to be the most economical and persistently used pipes. There are multiple reasons why several businesses and industries prefer using these pipes. They are not only safe and exhibit high durability, but these components are environmentally friendly, while also being versatile and a cost-effective solution. Hence, our carbon steel pipes find use amongst industries involved transportation. Apart from the conveyance of water and waste-water underground, they can also transport sewage. Two applications that favor their performance is the oil and gas, as well as the petroleum industry. In addition to being safe for transportation, their smooth, trouble-free passage is what makes them favorites in high-pressure applications & passage of steam, boiler and condenser tubes. Not to forget their contribution to industries such as chemical processing plants and for Steel scaffolding along with building foundations.

What is the price difference between erw and seamless pipes?

The production of seamless pipes is from their extrusion through a billet, thus resulting in a product that has no seam. Whereas, the result of an ERW one is from the welding of a sheet. The cost to weld metallic sheets into a pipe is far less in comparison to forming via a billet, which is why a welded product costs lesser than a seamless one.

What is the difference between the plain end and bevel end pipes?

The use of bevel end or as shortened as BE are conventionally in conjunction with either buttweld flanges or buttweld fittings. The practice of BE pipes is for the welding is to be directly, with a minute gap. Typically, space could be as small as 3 to 4 mm. The beveling of these ends angles at 30 degrees, with a tolerance of + 5° / -0°. Whereas - the root face of the bevelling is approx 1.6 mm, with a limit of ± 0.8 mm. Fabricators apply the bevel either by hand or by an automated process. These two processes ensure a perfect match between both the fittings or the flanges and the pipe. They also are consistently built.

Well suited for use in systems with a smaller diameter, a plain end or PE pipes are ordinarily cut at an angle of 90 degrees. Hence, they have an even or flat point of termination. The use of PE pipes are either with flanges or fittings of a socket weld and slip-on variety. Frequently, these models of structures use a fillet weld in their systems. The fillet weld could be on either or both sides and at the base of the flanges and fittings. The plain end placement of the pipe is ⅛” away from where it rests. This placement, in turn, permits the thermal expansion, which occurs during welding.

What does SAWL or JCO Welded Pipe mean?

JCO is a pipe forming technique where progressive bending aids in the production of an open seam pipe from any steel plate. The adoption of axis contouring processes such as J-ing, C-ing, and O-ing or short for JCO is what gives these pipes a set of specific characteristics. The main features of a JCO process pipe include superior efficiency in addition to a well balanced & highly accurate as well as even distribution of forming load.

The production of a Longitudinal Submerged Arc-Welding Pipe or as known by its other names, including SAWL and LSAW, is from a steel plate. The processing of this product begins with molding with a machine, after which it is to undergo welding. Welding SAWL pipes is by longitudinally welding it by a double-sided submerged arc process. This process imparts distinctive characteristics such as - uniformity, good weld toughness, excellent pliancy, plasticity as well as characteristically excelling sealing.

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