TPI April 2009

OCTG goods and Pipel ine products

OCTG LLP adds thread line capacity

Submerged GRP pipe application Superlit, a Turkish GRP pipe manufacturer, has supplied (DN) 3,000mm GRP pipes for underwater installation, for a project to supply cooling water from the sea to a Turkish metallurgical factory. A total of 600m of GRP pipe lines are installed submerged on saddles anchored on a continuous horizontal steel beam. Cooling water for the factory is absorbed 7m below the sea level.

OCTG LLP, USA, is adding a third double-ended PMC thread line at its Houston facility, expected to be operational by March 2009. The new line can accommodate tubing and casing with diameters from 2 3 / 8 " to 5 1 / 2 " OD. The company presently operates two PMC thread lines with OD capacities of 4 1 / 2 " to 13 3 / 8 ". The company claims these to be the only mill-speed threaders available for contract end-finishing in the United States. OCTG LLP is a leading provider of end- finishing services, such as API threading and inspection, to major manufacturers, distributors, and end-users of oil country tubular goods. The company operates at its 150-acre facility with a private rail spur, and has plans to return its on-site barge terminal into operation. Available inspection services include full- body ultrasonic (UTFL), electromagnetic (EMI), ultrasonic weld line (UTWL), dry and wet magnetic particle (MP), and a variety of API thread gauging and inspection. Threading services are performed on PMC double-ended tube mill thread lines, which include facing/bevelling operations, threading, and buck-on. OCTG also operates a complete double- ended Mori Seiki SL-8 casing line. New mill for OCTG Joint-Stock Company Steel Corporation has been operating in the steel market since 1993. The company has started the construction of processing mills for oil country tubular goods production at Dneprovskiy Pipe Works (DPW). The mills are equipped with up-to-date machinery for production of casing and tubing pipe. The machinery is manufactured by companies including Pipe Testing Machinery Co, SMTL and OCTG LLP – USA insidesales@octg.org www.octg.org

To resist abrasion of both the inner and outer layers of the GRP pipes due to continuous exposure to the salty working environment, the pipes were manufactured to reach an effective working life of at least 50 years. During the manufacture and installation stages, Superlit engineers studied factors including the temperature change of sea water, underwater current effects, resistance to underwater seismic movements, and the ‘stick-spread-reproduce’ nature of undersea organisms which might penetrate through the pipe walls, such as muscles, oysters, seaweed and algae.

Superlit has supplied GRP pipes for a project S S to supply cooling water from the sea

A major advantage of GRP pipes compared to alternative pipes is their adequate weight for sinking. GRP pipes can easily be submerged and sit on the seabed without the need for additional ballast or buoyancy. For easier pipe laying, pre-installation of multiple pipes on-shore is preferred in most cases. However, pre-installed pipes are subject to coupling slippage during submerging, due to unstable sea currents and water movements. The most common technique used for prevention of coupling slippage during submerging is to install marine lugs at the pipe ends. Marine lugs are T-shaped steel profiles attached to the pipe ends by lamination. After multiple pipes are joined with couplings, the marine lugs are connected to each other with steel rods. Even though the axial resistance of marine lug joints is greater than the axial resistance of the pipe itself in many cases, the main duty of marine lugs is to protect axial continuity and to prevent coupling slippage. Marine lugs are connected using steel rods, to S S prevent coupling slippage during submerging

Superlit Boru Sanayi AS – Turkey bsirin@superlit.com • www.superlit.com

of drill pipe. Dneprovskiy Pipe Works is currently undergoing auditing and certification with several international organisations, including American Petroleum Institute (API). The company’s quality management system has been audited and approved to ISO 9001:2000 by German TUV CERT. JSC Steel Corporation – Ukraine steel@stealth.dp.ua www.corpsteel.com

Fanuc. The company has scheduled the launch of a drill pipe production mill for the second half of 2009. The drill pipe is completed with a friction weld-on tool joint, using equipment from a leading manufacturer in the field of friction welding. The production line is completed with up-to-date thermal processing equipment. Planned monthly production output is up to 2,500 tons of tubing pipe, 3,000 tons of casing pipe and 2,000 tons

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Tube Products International April 2009

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