Nippon Steel1

NIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBE

Printed in Japan© NIPPON STEEL CORPORATION 2007 All Rights Reserved.

NIPPON STEEL PIPE & TUBE

Cat. No. PC316 2009.9 PDF

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 100-8071, JapanPhone: 81-3-6867-4111 Fax: 81-3-6867-5607

Head Office Nippon Steel Corporation

1

Manufacture of high-quality pipe begins with the best materials, and that is why Nippon Steel manufactures the materials that the company’s pipe products are made from. The company’s extensive experience in all phases of steel production....degass-ing, desulfurizing, rolling, etc....ensures that the finest billets, blooms, plates and sheets available are produced to Nippon Steel’s own rigorous quality standards and for the appropriate international standard to suit the intended application.

Contents

Introduction…………………………………………………… 1

Integrated Production of Pipe ……………………………… 2

Pipe Making Facilities and Product Sizes…………………… 4

Size Ranges ………………………………………………… 5

Available Grades …………………………………………… 6

Applications ………………………………………………… 8

Manufacturing Processes ………………………………… 14

Secondary Processing of Pipe …………………………… 25

Pipe Mills at Nippon Steel ………………………………… 29

Research and Development ……………………………… 30

Production Control and Quality Assurance……………… 32

Piping

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Pipe Pile

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Line Pipe

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Oil Country Tubular Goods

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Boiler & Heat-Exchanger

Tubes

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Structural Pipe & Tube

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Mechanical Tube

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ManufacturingProcess

Small-diameter Seamless

Hot Extrusion

Medium-diameter HF-ERW

Small-diameterHF-ERW

Continuous ButtWeld

UO ProcessLongitudinal Weld

Spiral Weld

Bending Roll Process / Press Bending Process Longitudinal Weld

IntroductionNippon Steel, one of the world’s largest steelmakers was formed in 1970 through the merger of Japan’s two leading and longest-established steel makers. The company supplies a complete range of steel products worldwide, and one of its most important products is pipe.

Nippon Steel has the total equipment capability necessary to serve your every need and purpose. We produce nearly 1.5 million tons of pipe annually, and in doing so employ stringent quality control systems so that every Nippon Steel pipe gives you added assurance of quality. Our ongoing research efforts constitute a further assurance of future improvements and innovations to meet new and increasingly severe quality demands. Today, Nippon Steel pipe is serving on big jobs of all kinds throughout the world.

Here are our pipe manufacturing methods and the main applications for pipe pro-ducts:

Notice: While every effort has been made to ensure the accuracy of the information contained within this publica-tion, the use of the information is at the reader’s risk and no warranty is implied or expressed by Nippon Steel Cor-poration with respect to the use of information contained herein.The information in this publication is subject to change or modification without notice. Please contact the Nippon Steel office for the latest information.

NIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBENIPPON STEEL PIPE & TUBE

Copyright © 2007 NIPPON STEEL CORPORATION. All rights reserved.

NIPPON STEEL PIPE & TUBE (PC316)

32

Coal Coking plantBlast furnace

Chargingmolten iron

Torpedo car

Chargingscrap

Oxygenblow

Basic oxygenfurnace

Vacuumdegassingequipment

Continuouscasting

Hot rolling mill

Temper mill Pickling line

Roughingmill

Continuousreheating furnace

Cold rolling millAluminum-coating line

Electrolyticcleaning line

Annealing furnace

Annealing and pickling line Skin-pass rolling mill Coil polishing line Stainless steel coilCoil grinding line

Coil build-up line Annealing and pickling line

Sendzimir mill

Annealing furnace Temper mill

C.A.P.L.

Hot coil

Pickleolhot coil

ALSHEET® coil

Reheating furnace Roughing mill Finishing mill Accelerated cooling Plate

Round billetRolling mill

Reheating furnaceBlooming mill Billet mill Ultra sonic test Magnaflux flaw detector Billet grinder

Limestone

Sintering plantIron ore

ZINKOTE®,DURPAINT® coilElectrogalvanizing line

Integrated Production of PipePipe can be manufactured in many ways. At Nippon Steel, pipe is made by the sub-merged arc weld (SAW), high frequency electric resistance weld (HF-ERW), continuous butt weld (CW) and seamless processes.

As the flow chart, Nippon Steel pipe is made from plates, hot coils, cold coils, bil-lets and blooms manufactured by the company. Nippon Steel’s technology is utilized for and close control is applied over, the manufacturing processes and product quality

throughout the entire sequence of operations involved, from ironmaking and steelmak-ing to the pipe-making materials and finished products. Also, Nippon Steel’s research and development activities have the benefit of constant feedback from these individual operations.

All the foregoing ensure that each pipe produced at Nippon Steel meets the cus-tomer’s requirements to the letter.

UO pipe mill

Bending roll mill and Press bending mill

High Frequency electric resistance weld pipe mill

Spiral pipe mill

Continuous butt weld pipe mill

Hot extrusion

Seamless Pipe

Seamless Pipe,

Seamless Stainless Steel Pipe

Large-diameter

Pipe(SAW Pipe)

CW Pipe

HF-ERW Pipe

Plug mill



54

Pipe Making Facilities and Product Sizes Size Ranges

Mills

Mannesmann-Plug

Mill Stretch Reducer

Ugine-Sejournet

Hot Extrusion

2” HF-ERW

4” HF-ERW

4” HF-ERW

4” HF-ERW

+ Stretch Reducer

16” HF-ERW

24” HF-ERW

Continuous Butt Weld

UO Process

Longitudinal Weld

Spiral Weld

Spiral Weld

Bending Roll Process /Press Bending ProcessLongitudinal Weld

Hot finish

Cold finish

Hot finish

Cold finish

Induction

Induction

Induction

Induction

Thermatool

Thermatool

Locationof Mills

Tokyo

Hikari

Nagoya

Kimitsu

Nagoya(Subsidiary company)

Hikari

Nagoya

Hikari

Kimitsu

Kimitsu

Yawata

Kimitsu

Related

company

Seamless

HF-ERW

CW

SAW

Size: Outside diameter (inch)

10 12 14 16 20 56 20086421

18 56

16 64

16 100

16 200

0.850 2.559

0.750 4.500

1.492 4.500

0.840 4.500

1.315 6.625

0.236 6.625

1.660 6.890

0.236 6.000

164.500

8.625 24

0.543 2.382

10 20

200

180

160

140

120

100

80

60

40

20

30 40 6050

Wall thickness

Out

sid

e d

iam

eter

（in

ch）

70 9080 100

3.53.02.52.01.51.00.5 4.0

SAW Pipe

Seamless Pipe ERW & CW Pipe

Stainless Pipe (Hot extruded)

（mm）

（inch）

2 4

24

20

16

12

8

4

6 8 1210

Wall thickness

Out

sid

e d

iam

eter

（in

ch）

14 1816 20

0.70.60.50.40.30.20.1 0.8

（mm）

（inch）

2 6

8

7

6

5

4

3

2

1

10 14 2218

Wall thickness

Out

sid

e d

iam

eter

（in

ch）

26 3430 42

1.41.21.00.80.60.40.2 1.6

38（mm）

（inch）

2 6 10

Wall thickness

Out

sid

e d

iam

eter

（in

ch）

14 30

0.8 1.00.60.40.2 1.2

22 2618（mm）

（inch）

(Pipe In Coil)

8

7

6

5

4

3

2

1

Straight Seam Pipe(Bending roll process / Press bending process)

SpiralSeamPipe

Straight Seam Pipe (UO process)

CW

ERW

Cold finished

Hot finished

Hot finished

Cold finished

Notes: For sizes not listed in these figures, please contact Nippon Steel.



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Available GradesNippon Steel continues its development and improvement efforts so as to be able to manufacture pipe to any designated standard to fulfill your specific requirements. Some representative standards and specifications are tabulated below along with the corresponding manufacturing processes employed at Nippon Steel to ensure com-pliance; the company manufactures pipe to other international standards, too.

Also available are Nippon Steel standard for special use such as Weldable High Tensile Strength Pipe, All-weather High Tensile Strength Pipe, Anti-abrasion High Tensile Strength Pipe and Sea Water Resistant Pipe.

When you require quality and reliability, Nippon Steel has the pipe products you need.

Seamless Pipe Welded PipeStandard

Seamless Pipe Welded PipeStandard

API (American Petroleum Institute)

5L

5CT

5D

2B

AS (Australian Standard)

1836

ASTM (American Society for Testing and Materials)

A53

A106

A135

A178

A213

A214

A250

A252

A268

A269

A312

A333

A334

A335

A376

A423

A513

AWWA (American Water Works Association)

C200

C203

GOST (USSR Specifications)

10704

10705

Line Pipe

Casing and Tubing

Drill Pipe

Fabricated Structural Steel Pipe

Welded Steel Tubes for Pressure Purposes

Black and Hot-Dipped Zinc-coated (galvanized) Welded Seamless Steel Pipe

Seamless Carbon Steel Pipe for High-Temperature Service

Electric Resistance Welded Steel Pipe

Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler Tubes

Seamless Ferritic and Austenitic Alloy-Steels Boiler Superheater and Heat-Exchanger Tubes

Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes

Electric-Resistance-Welded Carbon-Molybdenum Alloy Steel Boiler and Superheater Tubes

Welded and Seamless Steel Pipe Piles

Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Seamless and Welded Austenitic Stainless Steel Tubing for General Service

Seamless and Welded Austenitic Stainless Steel Pipes

Seamless and Welded Steel Pipe for Low-Temperature Service

Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service

Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

Seamless Austenitic Steel Pipe for High-Temperature Central-Station Service

Seamless and Electric-Welded Low-Alloy Steel Tubes

Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing

Steel Water Pipe

Standard for Coal-Tar Enamel Protective Coating for Steel Water Pipe

Electric-Welded Steel Tubes

Specification for Delivery of Electric-Welded Steel Tubes of 8~530 mm in diameter

CW

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ERW

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MM

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HE

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BR

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SP

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UO

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BS (British Standards)

1387

3059

3600

3601

3602

3603

DIN (Deutsche Normen)

1626

1629

2440

2441

17172

17175

17177

17440

ISO (International Organization for Standardization)

65

3183

JIS (Japanese Industrial Standards)

G 3441

G 3442

G 3443

G 3445

G 3446

G 3451

G 3452

G 3454

G 3455

G 3457

G 3458

G 3459

G 3460

G 3461

G 3462

G 3463

G 3464

G 3472

G 3473

LR (Lloyd’s Register of Shipping)

Pressure Pipes

Boiler and Superheater Tubes

DNV (Det Norske Veritas)

OS-F101

CW

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ERW

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MM

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HE

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BR

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SP

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UO

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Steel Tubes and Tubulars

Steel Boiler and Superheater Tubes

Dimensions and Masses per Unit (Length) of Welded and Seamless Steel Pipes and Tubes for Pressure Purposes; Metric Units

Steel Pipes and Tubes for Pressure Purposes; Carbon Steel with Specified Room Temperature Properties

Steel Pipes and Tubes for Pressure Purposes; Carbon Steel: High Duties

Steel Pipes and Tubes for Pressure Purposes; Carbon and Alloy Steel: Low Temperature Duties

Welded Steel Pipes in Unalloyed and Low Alloy Steels for Supply Purposes

Seamless Tubes in Unalloyed Steels

Steel Tubes Medium-Weight Suitable for Threading

Steel Tubes Heavy-Weight Suitable for Threading

Steel Pipes for Pipelines for the Transport of Combustible Fluids and Gases

Seamless Steel Tubes for Elevated Temperature

Electrically Resistance or Induction Welded Steel Tubes for Elevated Temperature

Stainless Steels

Steel tubes suitable for screwing in accordance with International Standard ISO 7

Steel pipe for pipelines for petroleum and natural gas

Alloy Steel Tubes for Machine Purpose

Galvanized Steel Pipe for Water Service

Coating Steel Pipe for Water Service

Carbon Steel Tubes for Machine Structural Purpose

Stainless Steel Tubes for Machine and Structural Purpose

Deformed Pipe for Coating Steel Pipe for Water Service

Carbon Steel Pipes for Ordinary Piping

Carbon Steel Pipes for Pressure Service

Carbon Steel Pipes for High Pressure Service

Electric Arc-Welded Carbon Steel Pipe

Alloy Steel Pipes

Austenitic Stainless Steel Pipes

Steel Pipes for Low-Temperature Service

Carbon Steel Boiler and Heat-Exchanger Tubes

AIloy Steel Boiler and Heat-Exchanger Tubes

Stainless Steel Boiler and Heat-Exchanger Tubes

Steel Heat-Exchanger Tubes for Low Temperature Service

Electric Resistance Welded Carbon Steel Tubes for Automobile Structural Purposes

Carbon Steel Tubes for Cylinder Barrels

Submarine Pipeline SystemsNotes: MM: Mannesmann Method Seamless HE: Hot Extrusion ERW: Electric Resistance Weld CW: Continuous Butt Weld UO: UO Process Longitudial Weld

SP: Spiral Weld BR: Bending Roll Process / Press Bending Process Longitudial Weld



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Applications Oil Country Tubular Goods Line Pipe

Casing string make up

Drilling rig

Drilling rig, casing string make up

Casing arrived in Alaska Pipeline in arctic area

Pipeline under construction in Alaska

Laying of HI-PL (Polyethylene-Coated) Pipe

Submarine pipeline laying

Submarine pipe laying by Kuroshio2



1110

Foundation work of bridge, inland sea

Pipe pile driving for seaberth construction Roof trusses SLP is available for reclaimed lands and areas with thick alluvial deposits

Production platform Pipes for electric transmission tower

Structural Pipe & Tube

NS-PAC used as pier piles in japan

[Steel pipe sheet piles] driving for harbor construction



1312

Stainless super-heater tubes in a power boiler

Pipes for automobiles

Furnace wall tubes in a power plant Large heat-exchangers in refinery

Pipes for Plants and OthersBoiler and Heat-Exchanger Tubes

Piping in building

Piping for super tanker

Pipes for hydraulic cylinder and piping

Piping in petrochemical plant



1514

Manufacturing Processes Seamless Pipe Process Hot Extrusion Process

Stainless and high alloy steel tubes which are difficult to produce by other meth-ods, are manufactured by the hot extrusion process at Hikari Works.

This process, put in service at Hikari in 1957 under a technical license from CEFILAC, France, extrudes a heated billet.

Those grades which demand dimensional precision or attractive surface appearances to suit specific purposes are additionally subjected to cold drawing or cold Pilger-processing, then undergo NDT inspections to assure the quality of the product.

We use billets that have undergone tapping, casting, blooming, and rolling in our Kimitsu Works to produce seamless steel pipes and tubes by the Mannesmann plug mill method. Tokyo Works produces high-quality hot seamless steel pipes and tubes, using piercing mills, rolling mills, reeling mills, sizing mills, and stretch reducers on billets heated to high temperatures. We also produce high-grade cold products through cold processes using cold drawing equipment and a wide range of heat treatment furnaces in order to satisfy the continuously rising expectations of customers.

Heated billet during extrusionStretch reducing mill Nondestructive inspection deviceHeat treatment furnace

Billet heating furnance Rolling mill (plug mill)Piercing mill

Hot extrusion mill

ReelingRollingPiercing

Sizing Reheating Stretch reducing



1716

HF (High Frequency) ERW Process

High frequency electric resistance welder

Welding condition monitoring system

Ultrasonic tester Hydrostatic tester

Seam normalizerForming rolls

A hot coil is first slit to a prescribed width, formed into a round shape by forming rolls then continuously electric-resistance welded.

Nippon Steel’s HF-ERW pipe is much different from that of conventional ERW. Nippon Steel-developed weld condi-tion monitoring and controlling equipment watches over welding conditions at every second to prevent weld defects. And not only the weld but also the base metal of pipe is carefully inspected using UST and other equipment follow-ing hydrostatic test.

A total of 8 HF-ERW pipe mills are operating at the Hikari, Nagoya and Kimitsu Works. Thus, Nippon Steel can fill orders for pipe for all applications..........line pipe, general piping, structural pipe, pipe piling, boiler tubes, heat-exchanger tubes, OCTG and others in the size range of 19.0 mm to 609.6 mm (24 inches) in outside diameter.

Nippon Steel can produce high-quality, high-grade pipe with great efficiency. Some of the high-grade pipe include: API X80 Iine pipe, and low-alloy steel boiler tubes.

Uncoiling Forming Electric resistance welding



1918

CW Process

Nippon Steel’s continuous butt weld (CW) pipe mill is located at Kimitsu Works. The CW process is suited to efficient and large-volume production of general piping pipe of good quality. Available sizes range from 0.840 inch to 4.5 inches.

Zink coating lineCW pipe mill

Hydrostatic tester

Rotary hot sawHeating furnace

Forming, Welding, ReducingReheating



2120

Nippon Steel makes UO double SAW straight seam pipe at the Kimitsu Works; outside diameters range from 18 to 56 inches and wall thicknesses from 0.25 inch to 1.57 inches. In UO pipe production, a plate is press-formed into a U-shape and then an O-shape, after which the seam is automatically submerged-arc welded on both the inside and the outside, followed by mechanical expanding and, finally, hydrostatic testing, NDT and other essential inspections.

The quality of Nippon Steel line pipe has been proven in severe service environments around the world such as, for example, in Alaska, Siberia and other frigid regions, and in

the North Sea, Black Sea and Mediterranean Sea where line pipe must function in deep waters under punishing condi-tions. In other words, Nippon Steel has supplied line pipe for projects where the quality of these products is the key to the success of the job.

The high-efficiency UO pipe mill at Kimitsu is capable of producing annually about 1,000 miles of pipe, mainly line pipe but also including pipe piling and water conduit line pipe. The mill has auxiliary facilities for coating and lining pipe with plastic, bitumen and other materials to meet specif-ic customer requirements.

UO Process

O-ing press

U-ing press

Inside submerged arc welder Outside submerged arc welder

Edge miller

Automatic marking equipment

Longitudinal seam weldingO-ing pressU-ing pressCrimping press



2322

Spiral Weld Process

Nippon Steel has three spiral-weld pipe mills at Yawata and Kimitsu Works, both of which manufacture large-diameter pipe from hot coils. These SAW pipe pro-ducts range from 16 to 100 inches in outside diameter and from 1/4 to 1 inch in wall thickness.

The spiral-weld pipe mill produces APl 5L line pipe, general piping, water pipe, pipe piling, structural pipe and other types.

Ultrasonic testerOutside welderOnline cut-off machine

General view of a spiral-weld pipe mill

Forming, inside and outside welding Cutting off

Skelp butt welding



2524

Secondary Processing of Pipe

A great variety of processing is needed depending on the intended application of the pipe. Nippon Steel is fully equipped to perform the following processing.

Secondary Processing of PipeBending Roll Process / Press Bending Process

If you need extra large-diameter pipe or extra heavy-walled pipe beyond the size range of the UO pipe mill, such as high-tensile strength grades for offshore pro-duction platforms, Nippon Steel can supply straight-seam SAW pipe produced by the bending roll process and press bending process in the size range of 16 to 200 inches in outside diameter, and 1/4 to 4 inches in wall thickness. Moreover, these pipe products can be produced to API 2B specifications, AWWA (American Water Works Association) and API 5L specification requirements for large-diameter water mains, as well as other standards.

3-roll bender

MACRO structure of muIti-pass welding (WT: 90 mm) offshore structural pipes (see upper photo) are fabricated with sophiscated weld-ing technique.

3-roll benderPress bending

Water pipe

Internal coating

(1) Coal-tar epoxy lining

(2) Epoxy lining

(3) Polyethylene lining

(4) Vinyl chloride lining

External coating

(1) Polyethylene coating

(2) Coal-tar epoxy coating

Line pipe (oil, gas)

Internal coating

(1) Two-component epoxy lining

(2) Phenolic epoxy lining

External coating

(1) Polyethylene coating

(2) Polypropylene coating

External coating

(1) Polyethylene coating (NS-PAC)

(2) Urethane elastomer coating (NS-PAC)

(3) Special bitumen compound

(4) Coal-tar epoxy, zinc rich paint plus, etc.

Others

Galvanized pipe (internal/external)

Aluminized pipe (internal/external)

Pipe piling

Steel pipe sheet piles

Conductor pipe vetco joint, etc.

Outside diameter (mm)

89.1 or more

89.1 or more

21.7~114.3

21.7~355.6

21.7~1,524

89.1~2,250

89.1~1,420

34~508

21.7~1,524

216.3~1,524

168.3~1,524

406.4~1,800

168.3~2,250

168.3~4,064

21.7~1,800

21.7~508

168.3~2,800

406.4~2,800

~914.4

Length (mm)

4,000~12,200

4,000~12,200

5,500

5,500

5,000~18,300

5,000~18,600

9,000~12,800

5,000~12,200

5,000~18,300

11,000~18,600

5,000~34,500

3,600~12,000

5,500~6,300

~100,000

~100,000

Kind of pipe Size range

Item

Coating

Fabrication



2726

Polyethylene-coated pipe

Line pipe performance testing apparatus

On request, pipe is available with coat-ings and linings for corrosion protec-tion, reduction of friction of the fluid, and other purposes. Water

cooling

Holiday inspection

Final inspection

Polyethylene coating

Adhesive coating

Pre-heating

Blasting

Blasting

Primer

Primer

Adhesivecoating

Polyethylene coating

Polyethylenecoating

Holiday inspection

Pre-heating

Fabrication yard

Handling of extra-long pipe

(1) Longitudinal extrusion process

(2) Side-extrusion process

Two-component epoxy lined pipe

Coating and Lining Fabrication of Pipe Piling

Pipe is manufactured in the size range of 168.3 mm to 2,800 mm in diameter. Nippon Steel manufactures extra-long pipe piling up to 100 m in length by means of arc welding.

Part of Nippon Steel’s sheet piling series, steel pipe sheet piles are in wide use in harbor construction and other large-scale quay and embankment con-

struction projects.



2928

NS-PAC urethane elastomer coated steel pipe sheet piles

NS-PAC polyethylene coated steel piles

NS-PAC™

With a view to developing corrosion resistant, maintenance-free and eco-nomical steel pipe pile and steel pipe sheet piles which will not require electrode replacement or repainting, Nippon Steel Corporation carried out extensive tests, and were aimed at technically assessing the performance of steel pipe pile under service condi-tions. These tests provided the basis for the development of Nippon Steels’s NS-PAC polyethylene-coated anticorro-sion steel pipe pile which since its mar-keting in April 1983 has earned an out-standing reputation among users. Now, carrying this technology a step further into the area of more complexly shaped products, the Company has developed a new line of urethane elastomer coat-ed steel pipe sheet piles. These new products are the latest addition to the NS-PAC series.

Pipe Mills at Nippon SteelNippon Steel has 9 integrated steel works and operates different types of pipe mills, a fact that underscores the company’s position as an experienced pipe manufacturer having a long history and a total capability.

Kimitsu Works

Hikari pipe & tube division

Muroran Works

Kamaishi Works

Kimitsu Works

: Pipe mill

Nagoya Works

Sakai WorksHirohata Works

Hikari pipe & tube divisionYawata Works

Oita Works

Head OfficeTokyo Works



3130

Research and Development

Multiple creep rupture testing machineConstant load stress corrosion cracking tester

Line pipe performance testing apparatusDrop weight tear tester

Solidifying cycle weld simulatorWeld test in cold chamber

Basic research

Research relatedto diversification

Integratedresearch activities

Research on basic orperipheral technologies

Research on steelmakingtechnologies



32

Production Control and Quality AssuranceNippon Steel’s sophisticated equipment, expertise and technology make it possible to manufacture and supply pipe to your complete satisfaction.

Throughout the processes and operations of Nippon Steel’s integrated steel pro-duction, exacting production control and quality assurance systems are in effect. Every pipe produced by the company must be certified as having met all the specified quality requirements before it is shipped from the mill. Examples of our pipe manufacturing methods include: (1) computer-aided production control and quality control of all opera-tions, from raw materials handling to shipment of finished products; (2) employment of the latest advances in technology for the manufacture of pipe having the exact quality to suit specific needs and applications; and (3) inspection systems so designed as to meet particular purposes, as exemplified by the extensive and effective use of nonde-structive testing equipment such as ultrasonic, eddy-current, X-ray and magnetic testers.

AII incoming orders are processed at the company’s Tokyo head-quarters. Orders are input into a computer, which specifies the quality of each product to suit the intend-ed use, then dispatches this data to the computer at the steel mill which is best posi-tioned to handle the manufacture of the products. Given the quality design, the mill per-forms the process design based on the materials best suited to meet the quality requirements of the order.

Legal Notice: While every effort has been made to ensure the accuracy of the information contained in this publication, the use of the information is at the readers’ risk and no warranty is implied or expressed by Nippon Steel Corporation with respect to the use of information contained herein.



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