SEAMLESS TUBE & PIPE · MANSFIELD, LOUISIANA

Engineered seamless pipes & tubes. Built for pressure.

Domestic seamless tube and pipe supply from Mansfield, Louisiana, with shorter lead times and smaller releases. Hot-finished and cold-drawn carbon, alloy and stainless steel to ASTM and ASME specifications.

154K SHORT TONS
Annual production capacity (140,000 MT)
36+ YRS
Manufacturing expertise
PRODUCT CATALOG · 11 CATEGORIES

Seamless pipes and tubes for every application.

Carbon steel seamless boiler tubing
A179 · A192 · A335
Heat exchanger tubes
SA-179 · SA-192 · SA-213
Seamless hydraulic tubes
SAE J524 · J525
ASTM A500 mechanical and structural seamless pipes
ASTM A519 · A500
Seamless mining tubes
A519 · DCDMA · EN 10216-4
Carbon steel seamless pipes
A106 · A53
Alloy steel seamless pipes
A335 · T11/T22/T91
Stainless steel 304 seamless boiler pipes and tubes
A213 · TP304/316/321
Hot finished seamless tubes and pipes
A106 · A333 · A335
Cold drawn seamless (CDS) steel tube
A179 · A213 · SAE J524
Cold drawn stainless steel seamless tubes
A213 · TP304L · TP316L
OUR MILLS · USA & INDIA

Domestic production in Louisiana, backed by our Kolkata mill.

Global Seamless Mansfield manufacturing plant in the USA
USA · 88K SHORT TONS (80K MT)
300,000+ sq ft at 816 Jenkins St. Cold drawing, finishing, cut lengths and eddy-current testing today, with hot piercing from 2027. Domestic supply for North American markets, with shorter lead times and smaller releases.
Global Seamless manufacturing plant in Kolkata, India
INDIA · 66K SHORT TONS (60K MT)
HFS + CDS + Stainless. Integrated manufacturing with in-house heat treatment, bright annealing and NABL laboratory.
WHAT’S NEXT AT MANSFIELD

Hot piercing comes to Mansfield in 2027.

A hot piercing mill is scheduled for commissioning at our Mansfield, Louisiana plant in 2027, adding on-site hollow production to the cold drawing, finishing and testing running there today.

INDUSTRIES SERVED

Built for the world’s most demanding environments.

Browse our seamless pipe and tube portfolio by operating environment and end-use application.
FULLY INTEGRATED MANUFACTURING

From billet to finished tube with complete traceability.

Global Seamless integrates hot finishing and cold drawing under one manufacturing system. Every stage, from raw-material control through heat treatment, dimensional inspection, NDT, and final dispatch, is engineered for repeatability and documented quality.

Built for demanding specifications.

  • Hot Finished Seamless
  • Cold Drawn Seamless
  • Multi-stage inspection
  • Hydrostatic, Eddy Current & Ultrasonic NDT
  • Custom grades, dimensions and lengths
TECHNICAL INSIGHTS · ENGINEERING RESOURCES

Practical knowledge for better pipe and tube decisions.

Seamless steel pipes
COLD PILGERED TUBES
Extreme OD/WT ratios for critical apps.
Seamless steel pipes
COLD PILGERED TUBES
Reciprocating die process for precision.
Seamless steel pipes
COLD PILGERED TUBES
When to specify pilger-milled tubes.
Hot finished seamless steel tubes
HOT FINISHED SEAMLESS
Normalizing and stress relieving for HFS.
Hot finished seamless steel tubes
HOT FINISHED SEAMLESS
Step-by-step HFS manufacturing process.
Hot finished seamless tubes and pipes
HOT FINISHED SEAMLESS
When to specify HFS over CDS.

Have a specification or RFQ ready?

Send the grade, standard, OD WT length and required quantity. Our technical sales team will respond with the right manufacturing route.