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/Stainless steel/Stainless steel welded tubes

STAINLESS STEEL WELDED TUBES

round and box sections

Stainess steel process pipes for food & dairy industry, tubes for heat exchangers and oil & gas, but also construction and ornamental tubes and box sections, as well as tubes for mechanical and automotive applications: with a global production covering all major sectors, Marcegaglia is the world’s top producer of stainless steel welded tubes.

The fabrication process is carried out within 4 manufacturing units worldwide, guaranteeing the same quality levels of products and service and totalling about 400 thousand tons overall capacity.

In Italy Marcegaglia Forlì, the world’s largest stainless steel tube manufacturing unit hosts 33 tube mills and operates according to certifications including ISO/TS 16949 for the automotive sector as well as DVGW for water and gas pipes, TÜV-PED / TÜV AD-2000 for pressure equipment, TIFQ for food contact (EC Regulation 1935/2004) and EHEDG for hygienic equipment design criteria. Welding processes are also certified according to ISO 3834-2.

Outside Italy, Marcegaglia stainless steel production is located in the plants of Marcegaglia Russia in Vladimir, Marcegaglia Turkey in Istanbul and Marcegaglia do Brasil in Garuva.

Specific production norms are employed according to EN or ASTM for specific application sectors:

  • process pipes for fluids
  • feedwater heater tubes for power plants
  • construction and ornamental tubes
  • tubes for mechanical and automotive applications
NORMES DE PRODUCTION

PROCESS PIPES FOR FLUIDS

MANUFACTURING STANDARD PRODUCT DESIGNATION
EN 10357
EN 10217-7
ASTM A270
Process pipes for the foodand dairy industry
EN 10217-7
DVGW GW541
Process pipes for drinkable water and press fitting
EN 10217-7
EN 10312
Process pipes for water treatment
EN 10217-7 Process pipes for the pulp and paper sector
EN 10217-7
AD 2000 W2/W10
PED 2014/68/EU
Process pipes for chemical applications
EN 10217-7
DIN 11866
Process pipes for pharmaceutical applications
EN 10217-7
ASTM A312/A778
Process pipes for oil and gas applications

MECHANICAL APPLICATIONS

MANUFACTURING STANDARD PRODUCT DESIGNATION
EN 10296-2
EN 10217-7
Round tubes for pumps and cylinders
EN 10217-7 Round tubes for elbowsand fittings
EN 10217-7 Round tubes for heat resistances

HEAT TREATMENT

MANUFACTURING STANDARD PRODUCT DESIGNATION
ASTM A 803
A 803M
ASTM A688
A 688M
Ferritic feedwaterheater tubes
Austenitic feedwater heater tubes
EN 10217-7
ASTM A249
AD 2000 W2/W10
PED 2014/68/EU
Round tubes for heat exchangers
EN 10296-2
EN 10217-7
Round tubes for evaporators for the sugar industry
EN 10217-7
AD 2000 W2/W10
Round tubes for pressure vessels
EN 10217-7 Tubes for boilers

CONSTRUCTION

MANUFACTURING STANDARD PRODUCT DESIGNATION
EN 10296-2
round only
ASTM A554
Construction round tubes and box sections

ORNAMENTAL

NORMA DE FABRICATION PRODUCT DESIGNATION
EN 10296-2
round only

ASTM A554
Ornamental round tubes and box sections

AUTOMOTIVE

MANUFACTURING STANDARD PRODUCT DESIGNATION
EN 10296-2
ASTM A554
Round tubes for automotive, exhaust systems
EN 10296-2
ASTM A554
Round tubes for automotive, hydroforming appliance
EN 10296-2
round only
ASTM A554
Round tubes and box sections for automotive frame construction
MAIN STEEL GRADES
Thanks to its production know-how, Marcegaglia Specialties is able to process

  • austenitic
  • super austenitic
  • ferritic
  • duplex
  • nickel alloy stainless steels.
TESTING AND OPTIONAL PROCESSING

Optional controls and processing for Marcegaglia product range of stainless steel welded tubes.

Standard and optional testing

  • Chemical composition
  • Micrographic analysis
  • Tensile test at room temperature or other temperature
  • Flattening test
  • Expansion test
  • Radial expansion test
  • Bending test
  • Electromagnetic test
  • Non destructive eddy current weld test
  • Dimensional test
  • Visual test
  • Surface roughness measurement
  • Salt spray test
  • Test for corrosive traces
  • Intergranular corrosion test
  • Potentiostatic corrosion test
  • Grain size measurement
  • Ferrite measurement
  • Burst test
  • Humidity test
  • Release of special certificates

Optional processing

  • Heat treatments
  • Pickling
  • Outer surface brushing
  • Inner and outer surface polishing
  • Inner and outer surface mirror polishing
  • Tubes individually sleeved
  • Bead rolling or weld seam removing
  • Cut to length
  • Customer defined marking
  • Customer defined tolerances
  • Welding position (box sections)
  • Special packaging
PRODUCT RANGE
Min – Max Outside diameter (mm) 6 – 406,4
Min – Max Thickness  (mm) 0,8 – 6
SUPPLY CONDITIONS
  • Dimensional tolerances according to manufacturing standard
  • Special tolerances upon request
  • Control documents 2.2, 3.1, 3.2 according to EN 10204 and specific norm requirements

Prince list (03/05/2021)

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