Keshar Pipeline Fittings Pvt Ltd

BBD Bag, Kolkata, West Bengal

Geotextile Pipeline Weights  is a patented system of weighting pipelines with high density aggregate gravel filled permeable geotextile sacks that are designed to either set-on or strap-on and straddle the pipeline in order to achieve buoyancy control. They consist of two lobes with multiple chambers, lying on opposite sides of the pipeline, which are secured by connector straps that fit tightly over the saddle of the pipeline. They can be applied on all type of conduits. Geotextile Pipeline Weights  provides an effective, economical and environment friendly solution to your pipelines weighting requirements.   SCOPE OF APPLICATION In geographical areas having little or no foundational support, for instance, rivers, lakes, foreshore, swamps, marshes and areas having high water tables, installed pipelines are weighted down with ballast of some kind including concrete weights, concrete coating and clamp-on weights in order to achieve negative-buoyancy of pipelines. But such emplacements are often subject to hydrostatic and hydrodynamic forces which can manifest in the displacement of pipeline from its original position, thus rupturing the outer coated surface of the pipeline and leading to adverse catastrophic failure and financial repercussions. Geotextile Pipeline Weights  resolves or atleast reduces the impact of all such problems set-out above, thus being an excellent replacement of all traditional pipeline weighting systems. They can more effectively achieve negative-buoyancy of pipelines, and at the same time, be cost-effective by reducing the high costs associated with traditional weighting systems. Furthermore,   Geotextile Weights  being soft and abrasion-resistant avoids corrosion and prevents damage to the outer coated surface of the pipeline during installation and also during shifting of pipeline due to hydrostatic and other adverse conditions.   MATERIAL SPECIFICATION Geotextile Pipeline Weights  are manufactured from Woven Non-Coated Geo-textile Polypropylene Fabric that exhibits a combination of outstanding physical, chemical, mechanical, thermal and electrical properties not found in any other thermoplastic making it suitable for application in weighting pipelines: Non-Biodegradable and Extremely tough suitable for buried application Excellent Heat resistance and low moisture absorption High Permeability of fabric ensures cathodic protection UV Treatment of fabric ensures UV resistance Most stable polymer having a pH range of 2-13 Excellent Di-electric properties making it resistant from electrolytic attack High Tensile Strength, High Comprehensive Strength and Impact Resistant Retains Stiffness and Flexibility and resists stress cracking Excellent resistance to organic solvents, degreasing agents, most alkalis and acids   ADVANTAGES Geotextile Pipeline Weights  offers many economic, safety and environmental advantages relative to traditional forms of buoyancy control systems. A.  FAST AND EASY INSTALLATION 1.   Geotextile Weights  can be fabricated and delivered to the site within days. 2.  Installation of  Geotextile Weights  is simple. It involves: i)   Filling the  Weights  with gravel from a local source. ii)  Distributing the  Weights  along the Right of Way. iii) Lowering the  Weights  over the pipeline, and back-fill. 3.  Construction period is shortened. B.  ECONOMICAL WEIGHTING SYSTEM 1.   Geotextile  Weights  can be filled with gravel from a local source which saves handling and transportation costs. 2.   Geotextile  Weights  do not require any heavy-duty equipment for hoisting, so equipment cost is saved. 3.  The "effective weight" of  Geotextile  Weights  under water often exceeds that of equivalent concrete weights or cement press products due to less water being displaced. Hence, less weighting is required, so the procurement cost is cut down. 4.  Leftover,   Geotextile  Weights  can be folded up and put on a shelf until next project. C.  SAFETY AND ENVIRONMENT FRIENDLY 1.   Geotextile  Weights  are made of polypropylene fabric, with features such as corrosion-resistant, anti-acid, non-pollutant to water quality, which is a kind of reinforced material with high durability. 2.  The  Weights  made from non-biodegradable polypropylene fabric is filled with local gravel, so it is as permeable as the ballast used to fill it, allowing groundwater and cathodic protection an easy path. 3.  The  Weights  are soft buoyancy control, allowing the pipeline the ability to move slightly while still maintaining negative buoyancy and coating protection. 4.  The  Weights  do not require extra trench depth. They also require less trench dewatering. 5.  The  Weights  do not require men to place them in trench avoiding potential safety concern. 6.  Due to the "effective weight" of  Weights,   the weight tilting problem is avoided.

Casing Insulator  is a patented series of polyethylene insulators that are universally applicable in the installation of pipelines when the carrier pipe runs inside a casing. They are used to support the coated pipe within a tubular casing, to electrically insulate the pipe from the tubular casing and to prevent damage to the coated surface of the pipe when the pipe is installed within the casing.   SCOPE OF APPLICATION When the pipeline is buried in the ground, for instance, at underground road, river, railway and highway crossings, the pipeline is generally further protected by being enclosed within a tubular casing. The pipeline is supported within the casing by a  Casing Insulator.  The  Casing Insulator,  in addition to its supportive function, electrically insulates the pipeline from the casing. This insulative function is necessary for the cathodic protection of the pipeline, and also, for preventing electric current loss when the pipeline is used as a conduit for electrical cables. Furthermore, the  Casing Insulator  prevents damage to the outer coated surface of the pipeline when the pipeline is drawn through the casing during installation.   GENERAL FEATURES Casing Insulator  is a high-density, polyethylene product, injection molded to provide low cost insulator of highest quality. It offers the following general features:   (i)        Easy Installation : Minimal coefficient of friction of the polyethylene material allows the carrier pipe to be more easily pulled through the casing thus helping in easy installation of the carrier pipe within the casing. (ii)       Cathodic Protection : Insulating properties like excellent dielectric resistance and low moisture absorption of the polyethylene material used ensures of meting with all the requirements of cathodic protection and yielding minimal electric current loss. (iii)     Coating Protection : High impact strength and excellent abrasion resistance of the polyethylene material prevents damage to the coated surface of the pipe when the pipe is installed within the casing and ensures long time resistance from chemical corrode minimizing cold flow of the coating on the carrier pipe. (iv)      Concentricity : Wide range of skid heights ensures the concentricity of the carrier pipe in the casing.   SPECIAL FEATURES Our  Casing Insulator  offers some specific features over traditional casing insulators.   (i)        Excellent Design : Designed and manufactured under the guidance of experts and engineers from Tsinghua University, Beijing University of Chemical Technology and China Petroleum Pipeline Bureau, Our  Pipeline Casing Insulator  are ensured of having highest quality, best design and excellent performance level meeting or exceeding industry standards. (ii)       Excellent Fastness : Reinforcement measures such as  steel straps  are used to fasten insulators firmly on the carrier pipe preventing slippage or looseness of the insulators and avoiding them from sliding along the carrier pipe. (iii)     Enhanced Coating Protection : On the inner wall of the  Insulator,   a   rubber plate is affixed to enhance the coating protection of the pipeline and insuring the quality of the product as well as speeding up the construction process. (iv)      Quick Installation : Electric Wrench is supplied for quick installation, speeding up the construction process further and saving costs.    RECOMMENDED SPACING The general “rule of thumb” of the pipeline industry is to space  Casing Insulators  8 to 15 ft apart. The recommended spacing for our  Casing Insulator  is to position two of the insulators at each end of the casing and then space the insulators 6 to 8 ft apart. Actual spacing may vary depending on local regulations and design specifications.   DIMENSIONS AND SPECIFICATIONS Casing Insulator  is designed for use in most carrier pipes within casings and suitable for all pipe diameters from 38mm upwards. Wide range of skid heights is available  to suit specific requirements. We also design and manufacture Insulators  as per customer’s specific requirements.