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. |
S.S. |
ASTM-ASME |
DIN |
NFA |
Russian State Standard |
|
Chemical industry |
EN 10217-7 |
219711 |
A 358-SA 358 |
17457 |
49147 |
GOST11068-81 |
|
Food products |
EN 10217-7 |
|
A 270 |
11850 |
49249 |
|
|
Heat exchangers |
EN 10217-7 |
219711 |
A 249-SA 249 |
17457 |
49247 |
GOST11068-81 |
|
Conduct pipe |
EN 10217-7 |
|
A 778 |
17455 |
49147 |
|
|
Fresh water |
EN 10312 |
|
|
DVGW541 |
|
|
|
Decoration, construction |
EN 10296-2 |
|
A 554 |
17455 |
49647 |
|
Standards of production, according to the application (stainless seamless tubes)
|
|
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
|
|
Symbol |
|
|
Mill finish |
Matt, |
Mill finish |
|
Polished |
Brushed |
Brushed, primary polishing |
|
Satin 180 Grit |
Degree of polishing |
|
|
Mirror |
Mirror 400 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
