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Stainless steel tubes

Passat Ltd. supplies seamless and welded tubes, both round and square.


“Passat” Company product range includes stainless steel tubes of the following steel grades: AISI 201, AISI 202, AISI 304, AISI 321, AISI-316L, AISI-316Ti, AISI 409, AISI 430, of different sizes (square from 20*20 mm to 300*300 mm, rectangular from 10*20 mm to 400*200 mm, with round tube diameter from 10 mm to 300 mm), and various types of surface (polished, mirror, mill finish).

Welded tube:

Steel grade: AISI 304, AISI 304L, AISI 316, AISI 316L, AISI 316Ti, AISI 430, AISI 409, AISI 439, J201
International standards:  welded tubes  made of austenite steel ASTM A554, A270, A312, A249, A269, DIN 17457, 17455
Type of welded seam – TIG, laser seam.
Surface:

  • Mill finish
  • Polished(180, 320, 400 Grit)
  • Mirror(400,600 Grit)

Shape:

  • Round
  • Square

Length:6 m (can be supplied tubes of any length under the order).
Sizes:

  • diameter from 8 mm to 325 mm
  • square size from 10*10 mm to 300*300 mm, 400*200 mm

Wall thickness: from 0,8 mm to 6 mm

Application:

  • Heat interchangers and heaters
  • Decorations, constructions
  • Oiland chemicalindustry
  • Food industry
  • Shipbuilding and automobile manufacturing
  • Water transportation systems



Seamless tube:

Steel grade: AISI 321, 316, 316L, 316Ti, 310
International standards:
ASTM A312 – Seamless tubes (cold rolled) made of austenite stainless steel
ASTM A213 - Seamless ferrite and austenite, alloy boiler, steam heating and иheat-exchange tubes
Surface: Mill finish
Shape: round
Length: 5-7 m
Sizes: diameter from 8 mm до325 mm
Wall thickness:  from 2 mm to 13 mm

Application:

  • Tubes for general service, chemical and nuclear industry
  • Heat exchangers
  • Stoves andchimney stack



Production Standards, according to the application (stainless welded tubes)

Application

E.N.
Euro Norm

S.S.

ASTM-ASME

DIN

NFA

Russian State Standard

Chemical industry

EN 10217-7

219711
219713

A 358-SA 358
A 312-SA312
A 269-SA 269

17457

49147

GOST11068-81

Food products

EN 10217-7

 

A 270

11850

49249

 

Heat exchangers

EN 10217-7

219711
219713

A 249-SA 249

17457
2818

49247
49244

GOST11068-81

Conduct pipe

EN 10217-7

 

A 778
A 269

17455

49147

 

Fresh water

EN 10312

 

 

DVGW541

 

 

Decoration,

construction

EN 10296-2

 

A 554

17455
2395

49647

 

 

Standards of production, according to the application (stainless seamless tubes)


Application

Russian state standard

International standard

Tubes for general service

GOST9940-81, GOST 9941-81

ASTM A312

Tubes for heat exchangers

GOST 9941-81 (multiply)

ASTM A213, DIN 17458-85, ASTM SA268, ASTM A269

Tool tubes

GOST19277-73, GOST10498-82, GOST14162-79,

DIN 17458-85

Boiler tubes

TU14-3Р-55-2001, TU14-3-460-75, TU14-3Р-197-2001

 

Stove tubes

GOST 9940-81, GOST9941-81, 10Х23Н18, 15Х25Т,

ASTM A312, TP 310S

 


Symbols to determine the surface type of welded tubes 


Surface type

Symbol

 

Mill finish

Matt,
Mill finish

Mill finish

Polished

Brushed

Brushed, primary polishing

Satin 180 Grit
Satin 320 Grit
Satin 400 Grit

Degree of polishing

Mirror

Mirror 400 Grit
Mirror 600 Grit

Degree of polishing up to mirror surface

 

For the tube welding the following welding methods are used:

  • TIG (DIN 17455, 17457) - method of welding Tungsten inert gas, water tubes, gas tubes, “food” tubes
  • MIG- method of welding consumable electrode in inert gas. Plasma welding
  • HF - method of welding with high-frequency – special  polished inside seam
  • SMAW – Shielded Metal Arc Welding
  • FCAW -  flux-cored Arc Welding, with tubing electrode or tungsten electrode
  • GMAW –Gas Metal Arc Welding

GTAW – Gas Tungsten Arc Welding

Тип проката

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