Referenced steel tube manufacturers 

A.D. Tubi Inossidabili

A.T. Wall Company, Special Tubing Unit

Able Industries

ACC La Jonchère - Div. La Jonchère Industrie

Acciai Tubi Inox (ATI)

Acciaierie e Tubificio Meridionali (ATM)

Acciaitubi

Accles & Pollock

Accumetrics

Accu-Tube

Aceralia Tubos Condesa

Acerorey

Acindar

Acme Roll Forming Company

Acme/Davis

Acme/Romac

Advance Steel Tubes (ASTL)

Ahshin Pipe &Tube

Ahwaz Pipe Mills (APM)

Ahwaz Rolling and Pipe Mills (ARPCO)

Ajanta Tubes

AK Tube

Al Jazera Factories (JASCO)

Alaskan Copper & Brass Works

Albrecht Zwick

Alce

Alessio Tubi Condesa (ATC)

Alfatub

Alfatus

Alfinox

Alfonso Gallardo

Algoma Tubes

Alison

Alkhorayef Steel Pipes

Allied Tube & Conduit

Almetyevsk Pipe Plant

Al-Musairiey Metallic Industries

Alpine Pipe Manufacturing

Alta

Althammer

Alvenius

Alvenius Equipamentos Tubulares

Amalgamated Industrial Stainless Steel (AISS)

Amalgamated Industrial Steel (AISB)

Amberlight Engineering Co. Ltd.

American Centrifugal

American Extruded Products (Amerex)

American Metal Technology

American Roll Formed Products (ARFP)

American SpiralWeld Pipe

American Stainless Tubing (ASTI)

American Steel Pipe Division

American Tube

American Tube Technology

American Tubular Products - A Division of Schaeffer Industries

Ameron International - Water Transmission Group

AMT

Anabib

Andiamos Dalmine

Angang Group New Steel Co., Ltd.

Angang Yantai Spiral Welded Steel Pipe Plant

Angle Ring

Anhui Tianda Enterprise (Group) Company

AnJi YinLong Steelpipe

Anshan Aotong Steel Pipe Plant

Anshan Dragon Pipe Industries (DPI)

Anyang Seamless Steel Tube Factory

Aoki Industries

Apex Tubes

Apo Pipe Industries

Apollo Tubes

Apolo Pipes and Equipments

Arabian Pipes Company (Saudi Arabia)

Arabian Steel Pipes Manufacturing (Jordan)

Aratubo

Araya Cañas E Hijos Ltda.

Araya Industrial

Arc Tube

Arcelor Tube - Condesa

Arcelor Tubes Precision

Arco Metal

Arcus Stahl - Sosta Products Division

Arfa Rohrenwerke

Arihant Tubes

Armco Uruguaya

Arntzen

Arregui

Artrom Steel Tube Enterprise

Arvedi Tubi Acciaio

Asian Mills

Asian Steel Product

Asnani Steel Industries

ASP

Associated Tube Industries

Atinox

Atlantic Tube and Steel

Atlas Tube (Canada)

Atlas Tube (USA)

Atuca

Automotive Industries (AISB)

Autopipe

Ayata Metal Industry

Azerboru

Aziz European Pipe Factory (AEPF)

Aztec Tubulars Products

Bakrie Pipe Industries

Baoji Petroleum Steel Pipe (BSG)

Baoji Titanium Industry

Baoji-SMI Petroleum Steel Pipe

Baosteel Group Shanghai Steel Tube

Baotou Iron & Steel

Barloworld Robor Cold Form

Barloworld Robor Precision Tube

Barloworld Robor Tube

Barloworld Stainless

Bartz-Werke

Bashir Pipe Industries

Batifer

Bazhou Shengfang Dongsheng Hot Dip Galvanizing Steel Pipe Factory.

Bazhou Shengfang Dongsheng No. 4 Tube Factory

Bazhou Shengfang Dongsheng No.3 Pipe Manufacture Factory

Bazhou Steel Tube and Pipe Manufacturing

BBJ Pipe Industries

Beck Industries

Beihai Steel Pipe Corporation (PGBH)

Beiman Special Steel

Bellville Tube Company

Belorussian Tube Works

Bender Ferndorf

Benteler

Benxi Beifang Tube Industry Group

Benxi Fulldoer Tubes

Benxi Northern Steel Pipe

Berg Steel Pipe Corp.

Bergrohr

BethNova Tube

Bhandari Foils & Tubes

Bharat Heavy Electricals (BHEL)

Bharat Steel Tubes (BST)

Bhushan - Chandigarh

Bhushan Steel & Strips - Sahibabad

Bidue

Bihar Tubes (BTL)

Bikar Juntas y Compensadores

Binder Edelstahl Produktion

Biraghi (France)

Biraghi Canada

Blazon Tube Company

Blue-Ve (BV)

BM Vobarno

BMS Metal Pipes Industries

BMW Industries Tube Division

Boa

Bolton Steel Tube (BST)

Bookook Steel

Boorim Special Steel

Bornay

Borsky Tube Manufacturing Plant

Borusan Boru

Bosal (UK)

Bosal Afrika - Industrial Division

Bosal Benelux

Bosal France

Brasimet Industries

Brastubo

Bristol Metals (Brismet)

Brown and Root International

Brutco Stainless & Alloy

BSL T.R.

Bull Moose Tube (Canada)

Bull Moose Tube (USA)

Bumi Kaya Steel Industries

Butting

C.S.M. Tube

Calamo Nords

California Steel and Tube

California Steel Industries (CSI)

Camdel Metals

Camrose Pipe Company (Campipe)

Can Boru

Canadian Phoenix Steel Products

Canadoil Pipe

Cangzhou OCTG Co., Ltd. of Huabei Oilfield

Cangzhou Spiral Steel Pipe

Cangzhou Xinyuantai Steel Pipe Mill

Caparo Steel Products - Tredegar Division

Caparo Steel Products - Walsall Division

Capello Tubi

Carib Pipe Company Ltd.

Carpenter Special Products

Cayirova Boru

CB Hoses & Piping

Cefival

Central Nebraska Tubing (CNT)

Century Tube Corporation

Ceruti

Cesinox

Chafra tubes

Chang Won Bending

Changshu Huida Steel Pipe Plant

Changshu Seamless Steel Tube (CSSST)

Changshu Walsin Specialty Steel

Changwon Steel

Changzhou Bao-Steel Tube

Changzhou Valinox

Chelyabinsk Tube Rolling Plant

Chepetsky

Chinchurreta

Choo Bee Metal Industries (CBMI)

Cinter

Citra Tubindo

Colmena-Consorcio Metalurgico Nacional SA (Colmena)

Columbia MBF

Columbia Structural Tubing (CST)

Condesa Fabril

Conduit del Ecuador

Condusid

Cooper & Cooper Sales

Copperweld - Automotive Group

Copperweld - Canadian Tubular Group

Copperweld - Mechanical Group

Copperweld - US Structural Group

Corinth Pipeworks

Corus Cold Drawn Tubes

Corus Tubes - Automotive & Engineering Business (Germany)

Corus Tubes - Automotive & Engineering Business (Netherlands)

Corus Tubes - Cold Form Business (Netherlands)

Corus Tubes - Cold Form Business (UK)

Corus Tubes - Energy Business (UK)

Corus Tubes - Structural & Conveyance Business (Netherlands)

Corus Tubes - Structural & Conveyance Business (UK)

Coventry Tubes Permatube

Crescent Steel & Allied Products

Csepel Steel Pipe

CST

Daewoo Shipbuilding & Marine Engineering

Daitube S.A.

Daiwa Steel Tube Industries

Dalian Brollo Steel Tubes

Dalian Seamless Steel Tube

Dallas Tube & Rollform

Damask Metals Co.

Data Steel Pipe Industries

d'Avila GTT-Melca

Davis Pipe

Daye Steel - Seamless tube production

Decora Tubes

Deepdale Engineering

Delhi - Solac

Delmas

Delta Centrifugal

Delta Tube & Company

Delta Tubular Processing (DTP)

Denholm Steels

Detroit Tubing Mill (The)

DMV Stainless Deutschland

DMV Stainless France

DMV Stainless Italia

DMV Stainless USA

Dnepropetrovsk Tube Works

Dong Yang Steel Pipe

Dong-A Steel Pipe

Dongbu Steel

Doshi Enterprises

Dothan Tubular Products

Douglas Barwick

Douglas Brothers Company (USA)

Drilltube International

Dunaferr Sheet-Forming

Dundee Products

Dura-Bond Pipe

Dwi Sumber Arca Waja (DSAW)

Dynamic Metal Forming

E.G.O. Electrical Components (Shanghai)

E.G.O. Elektrikli Aletler Sanayi A.S.

E.G.O. Elektro- Geräte

E.G.O. Elektro-Geraetebau

E.G.O. North America

E.G.O. Production

E.G.O. South Africa

E.X.L. Tube

EEW Korea Company

Eisenbau Kramer

El Nasr Steel Pipes and Fittings

Elfin International

EMC-Tembor

Emek Boru

Empresa Brasileira de Solda Eletrica (EBSE)

Engels Tube and Pipe Works

Erbosan

Erciyas Steel Pipe Industry

Erlanger Tubular Corporation (ETC)

Erndtebrucker (EEW)

Esta Rohr

ESW Rohrenwerke

Eugene Welding Company (EWCO)

Euro Steel Industries

Europipe (Germany)

Europipe France

Eurotubi

Ever Lasting Stainless Steel Industrial

Evered Tube Division, Cole Tubes

Excaliber Tubular Corporation - Ballwin Division

Excaliber Tubular Corporation - Seymour Division

Excaliber Tubular Corporation - St Louis Division

Exma Condesa (France)

Exma Condesa Belgium

Expansion Joint Systems (EJS)

Extended Surface Company of America (ESCOA)

Fabrica de Tubos Bufalo

Fabrica Nacional de Tubos Metalicos Oliva

Fabricaciones Industriales Tumex

Fabrication de Aleaciones Especiales (FAE)

Fabrika za Zavareni (FZC October 11)

Faradit Rohrwerk GmbH

Faurecia Exhaust Systems

Felker Piping Products

Femco

Ferpinta

Ferris Enterprises

Filit -Moscow Tube and Pipe Mill

Filtube

Fin Tube Products

Fine Tubes

Finnpipe

First Machinery Works of North China Petroleum

Fischer Canada Stainless Steel Tubing

Fischer Edelstahlrohre

Fischer Mexicana

Fischer South-Africa

Flejes Industriales (FLINSA)

Flender Rohr (FR)

Foster Threaded Products

Frefer

Frichtl Steel and Welding

Froh

FTV Proclad UK Limited

Fu Chang Metal Industrial

Fuchs Rohr

G. Misailidis

G. Rau

Galvak.

Garay

Gemini Steel Tubes

General Sider

Gibson Tube

Gieminox

Glengarry Industries

Göktas Tube

Gonzalez James Tube

Goodfellow

Goodluck Steel Tubes (GTC)

Grand-Aces

Grant Prideco (China)

Grant Prideco (Indonesia)

Grant Prideco (USA)

Grant Prideco Canada

Great Lakes Tubular Products

Greenville Tube Corporation (GTC)

Group Five Pipe

Guangdong Walsall Steel Pipe Industrial

Guangdong Zhongshan Hua Tong Steel Pipe Industry

Guven Boru Profil

Haicheng Northern Steel Pipe

Hall Longmore

Handle

Handy & Harman Tube Company

Haneda Steel Pipe & Tubes

Hanil Iron & Steel

Hanna Steel

Hannibal Industries (HII)

Harbin Steel Tube Factory

Hatboru

Hayes Tubes

Haynes International

HDM Steel Pipe Industry & Trade

Heatfab

Heavy Metal & Tubes

Hebei Zhongyuan Steel Pipe Manufacture Company

Hefei Iron and Steel

Heinz Gothe

Helitubo

Hellenic Pipe Works

Henan Zyzj Petroleum Equipment

Hengshui Jinghua Steel Pipe

Hengyang Steel Tube

Hengyang Valin Steel Tube

Herbert Bauer (Galvanik-Stahlbau-Rohrwerk)

Hickman Pipe & Tube

Hicom Petro-Pipes

High Performance Tube (HPT)

High Tech Tubes (England)

High Tech Tubes (Ireland)

High-Tek Tube

Hindustan Steel Co.

Hisan

Hofmann Industries

Hoto Stainless Steel Industries

Hsin Hsin Metal

Hua Feng Stainless Steel Welded Tubes

Huffaz Seamless Steel Pipe Industries

Huludao Steel Pipe Industrial

Hunting ThreadTech

Husteel

Huta Andrzej

Huta Batory

Huta Buczek

Huta Ferrum

Huta im Tadeusza Sendzimira

Huta Jednosc

Hwa Yew Iron Works

Hydroflex

Hylsa

Hyo Jong Industrial

Hyundai - Huy Hoang Pipe

Hyundai Hysco

Idod Systems

Ilta Inox

Ilva

Ilyich Iron and Steel Works (MMK)

Imosa

Imperial Steel Products

Indal Steel Pipe (ISP)

Independence Tube Corporation (ITC)

Indian Seamless Metal Tubes (ISMT)

Indiana Tube

Indiana Tube Danmark

Indonesia Steel Tube Works (ISTW)

Indorca

Indus Steel Pipes

Industria de Tubos y Perfiles (INTUPERSA)

Industria Nacional de Acero (INACERO)

Industria Tubular del Acero (ACERSA)

Industrial Formacero

Industrial Metalúrgica (INDUMETASA)

Industrias Doker

Industrias Duero

Industrias Metalurgicas Rex

Industrias Monterrey

Industrias Unicon (Unicon)

Industube

Indutech Canada

Inmet Stahl

Inox Tech

Inox Tubos

Inoxidables de Rabade

Insha Industries

Internacional de Aceros, S.A. de C.V. (IDASA)

International Industries

International Pipe Industries (IPI)

International Specialty Tube (IST)

International Tubular Products

Intfor

Ipsco (Canada)

Ipsco Tubulars (USA)

Iran Spiral Pipe Mill (ISPM)

Ispat Iscor

Ispat Nova Hut

Ispat Petrotub

Ispat Sidbec

Ispat Sidex - Mittal Steel (Romania)

Ispat Tepro

Ispat-Mittal Steel Annaba - Seamless Tube Division

ITC-AL LLC

ITT Automotive Company

J. Ray Mc Dermott Middle East

Jackson Tube Service

Jagan Tubes

Jai Industries

Jakl Karvina

Jamal Pipe Industries

Jansen

Japan Steel Works (JSW)

Japra Group International

Jaro

Jaung Yuann Enterprise

JFE Kokan Kenzai

JFE Steel Corporation

Jiangsu Chang-Bao Steel Tube

Jiangsu Chengde Steel Tube Share Company

Jiangsu Menglan Xinda Stainless Steel Pipe

Jiangsu Yaqing Steel Pipe Manufacturing

Jiangsu Yulong Steel Pipe

Jiangxi Xinyu Iron & Steel

Jiangyin Chuangxin Oil Pipe

Jiling Jiyuan Steel Pipe

Jindal Pipes

Jindal Saw Ltd.

Jinxi Steel Pipe Co. Ltd

Jiuli

Johnson Bros. Metal Forming

Johnson Screens

Joong Won

Julong Steel Pipe

K.K. Teikoku Kokan Seizosho

Kahn Steel

Kaiser Electroprecision Rollmet

Kalibre Boru

Kalup Corp.

Kalyani Seamless Tubes

Kami Pipe Industries

Kandil Steel Industries

Kanpur Steel and Ferro Alloy

Kanzen Kagu

Kanzen Tetsu (KTSB)

Kao Hsing Chang (KHC)

Karl Flender

Kentube Finned Products

Khartsyzsk Tube Works

Khi Pipe Industries

Kingland Petroleum Gas Pipeline Co., Ltd.

Kirk-Eastern

Kobe Special Tube

Koppel Steel

Korea Bundy

Kounan Steel

K-Tube

Kubota Metal

Kunshan Pearl Machinery Industry

Kuwait Pipe Industries and Oil Services Company(K.C.C.)

Kynast Steel

La Metalica

La Metallifera

La Meusienne (SMCM)

Labarge Pipe & Steel

Lalit Saw Pipes

Landruf

Larsen & Toubro

Laxmi Pipes

Le Guellec

Leader Steel

Leavitt Tube Company

LG-Nikko Copper Inc.(Welded Stainless Steel Pipe)

Liaoyang Steel Pipe

Liaoyang Steel Tube

Liaoyang Xingde Large Steel Pipe Plant

Linda Tube Manufacturing & Metal Processing

Lindab-Bartholet

Lindsay Manufacturing Company

Linsteel Pipes & Piles

Lloyds Metals & Engineers

LN Industries

Lock Joint Tube Company (LJT)

Lombarda Tubi

Lone Star Steel Company

Longtain

Louisiana Steel

Lugansk Tube Plant

M. Royo

M.F. Persico Pizzamiglio

Mach Industrial Group

Machinery Factory of Tuha Petroleum Exploration and Dpt

Maharashtra Seamless

Makeevka Pipe Casting Plant

Malaysia Galvanized Iron Pipes (MGIP)

Malaysia Marine and Heavy Engineering

Man Industries

Mannesmann Boru

Mannesmann Line Pipe

Mannesmannring Sachsen

Marcegaglia - Stainless Division

Marcegaglia - Tube Division (Divisione Tubi)

Marcegaglia do Brazil

Marcegaglia USA

Maritime Industrial Services (MIS)

Markin Tubing

Maruichi American Corporation

Maruichi Malaysia Steel Tube (MMST)

Maruichi Steel Tube

Master Pipes (MPM Pipes)

Matari Steel

Matthey

Matthey UK

Maverick Tube Corporation

Max Baum

Mayer Steel Pipe (Philippines)

Mayer Steel Pipe (Taiwan)

Mayweg

McHone Industries

Mechel Zeljezara

Metal Tube

Metaldom

Metalex Pipes

Metallwerk Sundern (Mesu)

Metalman Industries

Metal-Matic (MMI)

Metalservis

Metalurgica de Tubos de Precisao (MTP)

Metsec

Metsurf Technologies

MHP Mannesmann Prazisrohr

Microgroup

Middle East Tube (METCO)

Middletown Tube Works

Mid-States Tube Corporation

MidWest Steel and Tube

Midwest Tube Mills

Miju Steel

Minitubes

MMZ

Mock

Modern Pipe Mills

Mogilevsky Tube Plant

Mory Industries

Moss Vale

Mukat Pipes

Mukat Tanks & Vessels

Multiperfiles

Nacional de Acero (NASA)

Nakajima Steel Pipe

Napa Pipe Corporation

National Metalwares

National Petroleum Construction (NPCC)

National Pipe (NPC)

National Tubes (NTL)

Naylor Pipe Company

Neven Matthews

New England Small Tube

Newman Monmore Tubes

Newman Phenix Drawn Tube

Newman-Tipper Tubes

Newport Steel

Nexans Norway

Nezone Tube

Nikopol Seamless Pipe (Niko Tube)

Nikopol Stainless Tube Mill

Ningbo Sanding Steel Pipe Engineering ( NSPE)

Ningbo Zhehua Heavy Steel Pipe Manufacturing

Nippon Steel

Nishimura Koki

Nisshin Automotive Tubing (NAT)

Nittetsu Steel Pipe

Nizhnedneprovsky Tube Rolling Plant (NTRP)

NKKTubes

Noksel

Nordisk Simplex

Noro

North China Petroleum Steel Pipe

Northern Steel Pipe

Northern Tube

Northwest Pipe Company - Adelanto - California

Northwest Pipe Company - Atchison - Kansas

Northwest Pipe Company - Bossier City - Louisiana

Northwest Pipe Company - Denver - Colorado

Northwest Pipe Company - Houston - Texas

Northwest Pipe Company - Parkerburg - West Virginia

Northwest Pipe Company - Portland - Oregon

Northwest Pipe Company - Riverside - California

Northwest Pipe Company - Saginaw - Texas

Nova Tube (Québec)

Nova Tube and Steel

Nova Tube Ontario

Novomoskovsk Pipe Producing Plant (NMPP)

Oakley Tube Division

Ocean Metal Corp. (OMC)

Odessa Tube Plant Rezon

Officine di Crocetta (OCSA)

Officine di Lombardore

Officine Metallurgiche Ventura (OMV)

Officine Orsi

Offshore Oil Engineering

Oil Country Tubular

Omsco

OneSteel - Pipe & Tube

Opelika Metalfab

Orrcon

OSA (Okaya Shinnichi Corporation of America)

Osaka Tokushu Kokan (OTK)

Osborn Bujon

Osborn Metals

Osborn Tubes

Outokumpu Stainless - Wildwood (USA)

Outokumpu Stainless Tubular Products
(AST)

Ovako Steel

Ozborsan Tube Industry

Ozgur Boru

P.C. Campana

Pacific Corrugated Pipe

Packer Plada Mifalei Darom - Tubes and Profiles Division

Padana Tubi - Carbon Steel Division

Padana Tubi - Inox Division

Palmer Tube Mills

Pangang Group Beihai Steel Pipe (PGBH)

Pangang Group Chengdu Iron & Steel (PGG CSST)

Panyu Chu Kong Steel Pipe (PCK)

Paparelli Alessandro e Figlio

Paragon Industries

Paragon Tube Corporation

Parthenon Metal Works

Pass + Co.

Pearl River Hot-Dip Galvanizing Steel Pipe Factory

Pearl River Steel Pipe

Perfiles Rioja

Perfiles y Herrajes

Perfiltubo

Perfimet

Perfipar

Permascand

Pertinox - Isotubi

Pervouralsk (PNTZ)

PetroMetall Industrial Group

Petro-Pipe Industries (PPI)

Phoenix Tube Company

Pietra

Pioneer Steel Mills

Pipe Industries

Pipe-Gaz

Plymouth Tube Company - Carbon & Alloy Tube Group

Plymouth Tube Company - White Metals Group - Extruded Shapes

Plymouth Tube Company - White Metals Group - Stainless Tubing

Poongsan Valinox

Potter & Associates

Pouchard Tubes

Prakash Steelage

Pratibha Pipes & Structural

Precis Inter Holding

Precision Tube Product (PTP)

Precision Tube Technology (Scotland)

Precision Tube Technology (USA)

Precitubo

Precizios / Prectube

Premoca

Prestar Steel Pipes

Primus Industrial

Prinver

Procarsa

Proco Products

Productos Especializados de Acero (PEASA) - Tubes Division

Productos Tubulares

Profil-Akras

Profilnastro

Profins

Prolamsa

Prototube

Prudential Steel (Canada)

PSL Holdings

PTC Alliance

Pui Nam Cheong Industries (PNC)

Purna Bina Nusa

Puyang City Shuangfa Industry

Qingdao ASP Steel Pipes

Qingdao Xiangxing Steel Pipe

Quali-T-Tube

Quality Tubing

Rajendra Mechanical Industries

Ramna Pipe

Ransal India Private

RathGibson

Ratnamani Metals and Tubes

Rautaruukki Oyj

Redox

Regiomontana de Perfiles y Tubos

Remi Metals Gujarat

Republic Conduit

Rescal

Resco Tubi

RhinoTube

Richardson & Cruddas

Rivit

Robert Mitchell - Division Douglas Bros.

Robur Buizenfabriek

Rocky Mountain Steel Mills (RMSM)

Rohrleitungs-und Behaelterbau Aschersleben

Rohrwerk Krieglach

Rohrwerke Maxhütte

Rongsheng Machinery Manufacture Ltd of Huabei Oilfield, Hebei

Roofings

Rosetti Marino

Rothley

Rothrist Germany

Rothrist Schweiz

Royal Precision

Rurexpol Sp. z.o.o

S & T International

Sadef

Sadid Pipe and Profile (SPP)

Safa Rolling & Pipe Mills Co.

Saha Thai Steel Pipe

Sainest Tubes

Salem Tube

Salem Tube (UK)

Salgotarjaner Stahlwarenfabrik

Salzgitter Grossrohre

Sam Kang Industries

Samchai Steel Industries

Samson Roll Formed Products

Sandvik Asia (SAL)

Sandvik Calamo

Sandvik Chomutov Precision Tubes

Sandvik Material Technology Canada

Sandvik Materials Technology (SMT)

Sandvik Materials Technology NAFTA

Sandvik Metinox

Sandvik Poppe & Potthoff

Sandvik Precitube

Sandvik Steel UK

Sanoh Industrial

Sanwa Kokan

Sanyo Special Steel

Satinox

Saudi Steel Pipe (SSP)

Saudi Steel Profile

Saveh Rolling & Profile Mills (SRPM)

SAW Pipes USA

Sawhill Tubular Products

Schmidt & Clemens (S+C)

Schmidt Clemens Spain - Centracero

Schoeller

Schoeller Bleckmann Edelstahlrohr

Schwarzwalder Rohrenwerk (SRW)

Scientific Tube (STI)

Seacat

SeAH Steel

Seamless Pipe Indonesia Jaya (SPIJ)

Seamless Pipe Plant of Anshan Iron & Steel Group

Seamless Steel Tube and Pipe Co. (Celbor)

Seamless Tube Mill of Baotou Steel Union

Seam-Mac Tube

Searing Industries

Seces-Pol

Senior Flexonics

Seong-Ho CSP

Sepahan Industrial

Sepahan Industrial Group

Seversky Tube Works

Seymour Tubing

Shakti Tubes

Shandong Molong Petroleum Machinery

Shanghai Baoye Steel Tube

Shanghai BSW Petropipe

Shanghai Shaped Steel Tube (SSST)

Shanghai Third Navigation ASP Steel Pipe (SH-ASP)

Shanghai Yongxin Corrugate Pipe

Shanghai Zhongye Steel Pipe

Shanghai Zhongyou TIPO Steel Pipe

Shanxi Yuci Guolian Steel Pipe

Sharjah Steel Pipe Manufacturing Company (SSPMC)

Sharon Tube Company

Shashi Steel Pipe Works (Sinopec)

Shelby Welded Tube

Shengli General Engineering

Shengli Petroleum Administration General Machinery Plant

Shengli Steel Pipe

Shengli-Highland

Shenyang Spiral Steel Tube Factory

Shenzhen Chiwan Sembawang Engineering

Shuan Hwa Industrial

Shunde Hua Feng Stainless Steel Welded Tubes

Siam Matsushita Steel (SMS)

Siam Nippon Steel Pipe (SNP)

Siddhartha Tubes (Tubes Division)

Siderca

Siderinox

Siderurgica Aristrain

Siderurgica de Guatemala

Siderurgica de Tubo Soldado (STS)

Siderurgica Huachipato (CSH)

Siderval

Sif Group

Silcotub SA

Simet

Sinarsky Pipe Works (Sin TZ)

Sino-American Shanghaï Pacific Pipe

Siping Wantong Steel Pipe

Sitai Inox

Skyline Steel Corporation - Pipe Group Division

Slavsant - Antratsit Tube and Pipe Works

Smorgon Steel Tube Mills

Société de Transformation de Métaux PAF

Socomas

Soconord-DPAL

Socova

Soldaduras y Tuberia de Oriente (Soltuca)

Sonnichsen

Sotaci

Sotep

South East Asia Pipe Industries (SEAPI)

Southern Pipe Industry

Southland Tube

Southward Engineering

Special Metals

Special Metals Wiggin

Specitubes

Spuncast

Sri Sarbati Steel Tubes (SSST)

Stainless Steel International Tubes (SSI)

Stal Impex

Stalatube (Finland)

Stalatube (Netherlands)

Stalprodukt

Steel Authority of India

Steel Flower

Steel Forgings

Steel Pipe Factory of Pipeline Bureau, CNPC

Steel Pipe Industry of Indonesia (SPINDO)

Steel Tube Subcompany Baoshan Iron & Steel

Steelpipe New Zealand

Steelprom

Stelco Hardy

Stelpipe

Sterling Pipe & Tube

STI Sanoh India

Structo

Stupp Corporation

Suddeutshe Feinmechanik (SFM)

Sumikin Stainless Steel Tube

Sumikin Weld Pipe

Sumitomo Electric Industries (SEI)

Sumitomo Metals - Tubular Products Division

Sumitomo Pipe & Tube

Superior Tube Company (STC)

Suraj Stainless

Surindra Engineering

Surya Steel Pipe

Swepco Tube

Syrian Galvanized Pipes Company

T & B Tube

T. Laser

Ta Chen Stainless

Tabalsa (TB)

Tachia Yung Ho Machine Industry (YHMCO)

Taganrog Metallurgical Works (TAGMET)

Tai Feng Qiao Metal Products

Tata Steel (Tubes Division)

Technocraft Pipes

Tecnofar

Tecnotubi

Tectron (A Division of Allied Tube & Conduit)

Tejas Tubular Products

Teka

Tekno Pipe System (Alvenius Chilena Ltda.)

Tektube

Tenaris Confab

Tenaris Siat

Tenaris Tavsa

TenarisDalmine

Teshima Korea

Teshima Seikan

Texas Steel Conversion

Texas Tubular Products

Tex-Tube Company

Thai Steel Pipe Industry Co., Ltd. (TSP)

Thai Union Steel (TUS)

Thai-German Products Public Company (TGPRO)

Thakkarsons Auto Ancillary (TAAL Premium Tubes)

Thompson Culvert Company (TCC)

Three Star Metal

TI Automotive - Bundy Fluid Systems (China)

TI Group Automotive Systems (Canada)

TI Group Automotive Systems (France)

TI Group Automotive Systems (Germany)

TI Group Automotive Systems (India)

TI Group Automotive Systems (Italy)

TI Group Automotive Systems (Mexico)

TI Group Automotive Systems (South Africa)

TI Group Automotive Systems (Spain)

TI Group Automotive Systems (Sweden)

TI Group Automotive Systems (UK)

TI Group Automotive Systems (USA)

TI Group Automotive Systems Latin America (Brazil)

Tianjin Feilong Goods And Materials Sales

Tianjin Lifeng Yuanda Steel Group

Tianjin No.1 Steel Rolled

Tianjin Pipe Corporation (TPCO)

Tianjin Seamless Steel Pipe Plant

Tianjin Shenzhoutong Steel Pipe

Tianjin Shuangjie Steel Pipe

Tianjin Tiangang Special Petroleum Pipe Manufacture (Tiangang)

Tianjin Xingyuda Steel Pipe

Timken

Timken Alloy Steel Europe

Toa Gaigyo

Tohsei Steel Tube

Tomsicek Manufacturing

Tonggang PanShi Seamless Steel Tube

Tosçelik

TPS Technitube Rohrenwerke

Trafileria Alessandro Ronconi

Trafiltubi

Transmesa

Trent Tube

Trident Sterling Tube

Troxel Steel Tubing

Trubostal

Trubostal (Ukraine)

True Temper

Tubac

Tubacero

Tubacex Tubos Inoxidables (TTI)

Tubafor Maroc

Tube Methods

Tube Products of India

Tubemeuse Industries (TMI)

Tuberia Laguna

Tuberia Nacional (TUNA) Villacero