TPi May 2014

products & developments

Stainless steel composite tubes

Carbon steel fittings Hebei Haiyuan Pipe Fittings is an ISO-certified manufacturer of carbon steel butt weld fittings according to ASTM A234 WPB, and carbon steel forged flanges to ASTM A105/N. 80 per cent of the company’s products are exported, to countries including Poland, Singapore, UAE, Netherlands, Indonesia and Iran. Hebei Haiyuan Pipe Fittings Co, Ltd – China steel_fittings@hotmail.com www.csfittings.com

To manufacture these tubes, carbon steel strip of the required grade is rolled and HF welded into a tube. As the formed tube passes through the second welding head, a sleeve of stainless steel strip is formed around the carbon steel tube, and TIG welded. A sophisticated rolling process ensures that there is no air gap between the carbon steel and stainless steel layers. The tubes can be bent and welded like pure stainless steel tubes using TIG welding. Tubes are available in sizes of 19.05 to 63.5mm OD with 1.2 to 1.5mm total thickness. Smart Stainless Tubes Pvt Ltd – India marketing@smarttubes.in www.smarttubes.in

Smart Stainless Tubes Pvt Ltd is a manufacturer of stainless steel composite tubes, based in India. The tubes provide the qualities of stainless steel for external applications. They have a 0.3mm layer of stainless steel on top of a 1 to 1.2mm-thick carbon steel tube. The carbon steel core provides structural strength, and the stainless steel layer provides the shine and anti- corrosive protection. The tubes are used in ornamental applications of stainless steel tubes such as railings, balustrades, door handles, handlebars, grills, gates, medical and office furniture, and for long lasting civic amenities like bus stands and lamp posts.

Modular inflatable bladder system Aquasol Corporation has launched the patent-pending I-Purge™ and I-Purge X modular inflatable bladder systems. The versatile I-Purge and I-Purge X modular system components combine to offer the welding industry customised solutions for pipe purging.

Equipped with Aquasol’s quick-connect fittings, components easily snap on and off in seconds. A variety of standard harness lengths allow the user to customise length based on individual project needs, enabling placement of the bladders outside the heat-affected zone. The flexible, high heat harnesses allow for navigation through elbows and T-joints, and have a central point marked with a luminescent indicator for easy alignment with the centre of the root gap. The I-Purge modular system consists of two spark-resistant, inflatable bladders connected by a high-heat resistant bridge harness. The design allows for the creation of a pipe reducer by simply connecting two bladders of different, yet similar, diameters. A tri-flow hose maximises efficiency by enabling bladder inflation and quick flooding of the purge area with noble gas.

Aquasol’s I-Purge X inflatable bladder system

The I-Purge can be modified with the Isolator™ adaptor kit into a one-sided plug. An isolator can be used to close off the end of a pipe for servicing, cleaning, inspection or sealing. The I-Purge modular system can be used multiple times thanks to its durable construction and high quality components. Bladders are available in sizes ranging from 2" to 48" and may be purchased either individually or as a complete system.

An innovative tubing system provides separate connections for inflation of bladders along with introduction of inert gas to the weld zone to expedite the purging process. The inflated bladders create an airtight seal against the pipe walls. Another connection enables monitoring of exhaust gases, ensuring an oxygen-free environment. Aquasol’s patent-pending diffuser evenly distributes gas throughout the purge area, reducing turbulence. Once the weld is complete, the bladders can be deflated, extracted, cleaned and stored in the provided carrying bag.

Aquasol Corp – USA info@aquasolcorporation.com www.aquasolcorporation.com

28

Tube Products International May 2014

www.read-tpi.com