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Outokumpu Stainless Steel Coil Plate: Outokumpu Bar ( Round Bar / Hex / Bright )Outokumpu Welded Pipe
Outokumpuis a global leader in stainless steel with cold-rolling capacity of 2.6 million tonnes. We create advanced materials that are efficient, long lasting and recyclable – helping to build a world that lasts forever.
Stainless steel is an ideal material to create lasting solutions in demanding applications from cutlery to bridges, energy to medical equipment. Stainless steel as material is 100% recyclable, corrosion-resistant, maintenance-free, durable and hygienic. Outokumpuhas been instrumental in developing the stainless steel industry into what it is today. Indeed our history is as old as that of stainless steel itself, dating back a century to our sites in Germany and the UK where stainless steel was invented in the beginning of the 1900s and in Sweden, where duplex was invented. Find out more about our R&D expertise.
Our production facilities cover all continents and are located in China, Finland, Germany, Mexico, Sweden, the UK and USA, with a global sales and service center network close to our customers. Read more about our operations in Europe, Middle East and Africa (EMEA); in Americas and in Asia-Pacific (APAC).
In 2014, Outokumpusales were 6,844 million euro and stainless steel deliveries 2,554,000 tonnes. Outokumpuemploys more than 12,000 professionals in more than 30 countries, with headquarters in Espoo, Finland and shares listed in the Nasdaq Helsinki.
With world-class melt shops and the most modern continuous welding lines in the industry, Outokumpuproduces stainless steel pipes with the largest size range, including large-diameter heavy wall stainless steel pipe, of any producer in North America. Our products are used in the most challenging environments, offering a combination of high strength, corrosion resistance, and cost savings for customers in a wide range of industries.
Together with consistent product quality and expert advice on choosing the right product, we are committed to increasing your competitive advantage. We offer a broad range of austenitic, heat resistant and duplex grades including our proprietary duplex grade Forta LDX 2101, which combines low nickel content with high mechanical strength.
Outokumpuis a leader in supplying specialty stainless steel bar. Our bar program includes the Prodec® grades optimized for improved machinability with longer tool life and enhanced quality. We ensure high quality and consistency through an in-house end-to-end production process from melting and rolling to finishing and heat treatment.
Whatever the grade, shape, size, and volume you need, we’re dedicated to providing it. Our product program covers a wide dimension range from 5mm to 400mm (3/16” – 15”). We offer a wide range austenitic, martensitic, duplex and ferritic stainless steel bar with diverse sizes and shapes, including round, square, and hexagonal. Our operations are supported by intensive in-house product inspection and testing and are accredited to meet all the most recognized international standards, including the ISO 9001.
Outokumpustainless steel coil and sheet is ideal for a wide variety of applications and is produced using the most advanced technologies and to the strictest quality requirements. It is available in a range of corrosion and heat resistant grades to offer a high-strength, corrosion resistant material that is lightweight, highly workable, and 100% recyclable.
Outokumpuis one of the few stainless steel producers that can provide coils in widths up to two meters (72”). Our expertise in surface finishes enables us to offer patterned material in the widest available thickness range, from 0.3 up to 3.5 mm and in widths of more then 1500 mm.
Our state-of-the-art melt shops ensure superior control of product composition, structure, and inclusion pattern to produce very clean steel. Computerized process control of our rolling mills, heat treatment facilities, and finishing lines ensure consistency and superior control of the targeted properties to ensure you get exactly the product you need.
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Outokumpu manufactures the most complete supply of materials/grades of welded stainless steel pipes.
Outokumpugains a considerable cost advantage in internal logistics and energy savings through our mine-to-mill production chain at our Tornio facility in Finland. Our fully-integrated facility combines chromium mining, ferrochrome production and stainless steel melting in one location.
Stainless steel is one of the world’s most recycled materials, with some 90% of each new batch - or heat - coming from scrap. At Outokumpu’s European melt shops, we use electric arc melting, sophisticated AOD/CLU refining and a specialized ladle treatment that adds additional alloy elements to the steel at precise amounts and temperatures. The high-quality refining and ladling is essential for the downstream production of our corrosion-resistant and heat-resistant special grades.
There are two manufacturing methods for producing pipe. They can be produced from large coils of strip or skelp, which is welded without interruption. This is called continuous production. Or they can be produced in large sizes, one piece at a time, which is called batch production.
The starting material for making continuous pipe is a coil of strip or a skelp with the right thickness and width to make the required pipe size. The strip is formed through a series of rolls to make a completely uniform, circular section.
Our size range includes continuous produced pipe from 1/2 through 14-inch nominal pipe size in Schedules 5, 10, 40, and 80.
For batch production, the starting material is plate. Almost all of the stainless steel plate used is produced by the Outokumpu plate mill in New Castle, Indiana, which assures the quality of our starting material.
Our batch-produced pipe covers the size range from 16 inch to 80-inch diameter. In addition to the lighter wall ranges, the batch-produced pipe includes wall thicknesses up to two inches for the largest pipes.
For batch production, the plate arrives at the pipe mill cut to the correct length and width for the pipe size to be manufactured. First, the edges of the plate are formed to provide for the correct geometry in the weld. Then the whole pipe is roll-formed to provide the cylindrical shell for welding.
After the shell is rolled, the joint is tack welded to hold the shell together until the final welding operation. The shell is then transferred to the welding machine. Our Wildwood facility has several welding machines, each specially designed to perform different types of welding on the inside or outside diameter with or without filler metal according to the specification for the pipe.
In continuous production, each weld is cold worked so that subsequent heat treatment will produce a grain refinement in the weld structure, which provides for a superior profile of the weld in cross section, both inside and out. A rolling mandrel inside the pipe supports the section being rolled, which holds the mandrel in the right place to support the bead working.
Annealing recrystallizes the stainless steel’s internal structure, which is altered in the rolling process. In continuous production, pipe is annealed in line followed immediately by water quenching. All continuously produced pipe is in-line annealed.
In batch production, Outokumpu anneals cut pipe lengths in a separate furnace. Once the pipe reaches the minimum required annealing temperature it is held for a time proportional to the wall thickness, and then water quenched by placing the pipe in a water tank adjacent to the furnace. To produce a straight pipe with a circular cross section we press the pipe in a die of the correct final size.
Continuous pipe is cut in desired lengths by a special device which monitors the length produced and then locks on to the pipe and travels with it to cut off the desired length without interrupting its smooth movement. Each piece of pipe is inscribed with an identification indicating the original heat and lot of coil.
The cold forming, welding, and rapid cooling of continuously produced pipe may produce some distortion, so the next step is a mechanical straightening. Outokumpu uses several methods, but the most common is cross rolls straightening. This method produces a straight pipe with a uniformly circular cross section with as little deformation as possible.
Test samples are cut from the pipe as required. The number of samples, their location, and exactly which tests are done vary based on what the customer has requested in the ordering specification. We may be required to test for composition, strength, hardness, toughness, and corrosion resistance. On the pipe itself we also perform a number of non-destructive tests such as hydro, eddy current testing, and x-ray examination to confirm weld integrity.
Once the continuously produced pipe has been shown to meet the metallurgical and dimensional requirements of the ordering specification, it is ready for pickling. The pipe is immersed in a nitric hydrofluoric acid solution, which cleans the steel, and removes the oxide formed during annealing. Once the pipe has been thoroughly rinsed it quickly restores its protective, passive film.
The pipe is now ready for final inspection and marked for packing in accordance with the customer’s specification. After the order has been labeled, it is ready for shipment.
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