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Stainless Steel Seamless Pipe

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Standard:
ASTM A312 Austenitic Stainless Steel Pipes for high-temperature and general corrosive service.
ASTM A213 for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A269 Austenitic Stainless Steel Tubes for General Service
ASTM A270 for Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubes


Grade: TP304,TP304L,TP304H,TP316,TP316L,TP316Ti,TP309,TP310S,TP321,TP321H, TP347, TP347H, TP405, TP410, TP430



Sizes: 1/8" - 36" +
Schedules: S/5s - XXS
Services: Bending - Cutting - Grooving - Polishing - Threading


Surface treatment: Industrial tubes Annealed and pickled, Sanitary tubes polished 180 grit, 240 grit, 400 grit


Austenitic steel

TP304
General-purpose stainless steel with good corrosion resistance for most applications. Used for: Bar rails, Boat
railings, Canopy supports, Chemical processing equipment, Chemical tubing, Column covers, Duct works, Feed-water
tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles,
Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings
(architectural), Traffic barriers, Water pipes.
TP304H
Higher carbon content than 304L, for increased strength, particularly at elevated temperatures.
TP304L
Chemical plant and food processing equipment, where freedom from sensitization is required in plate thicknesses
TP316/316L
TP316/316L
Used where higher corrosion resistance is required. Boat railings, Canopy supports, Chemical tubing, Column covers,
Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes,
Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping
systems, Railings, Street (urban) furniture, Textile tubing, Traffic barriers, Water pipes.
TP316H
Similar oxidation resistance to TP 316. Main areas of application: Heat exchangers, furnaces, chemical and
petrochemical plant.
TP321
Heat exchanger tubing, Chemical processing tubing, Pressure tank tubing. Suitable for heat resisting applications
to 800°C.
TP321H
This is the high carbon version of TP 321 which ensures greater creep resistance. Behaves much the same as TP 321
in oxidation resistance. Main applications: Heat exchangers, furnaces, boilers in chemical and petrochemical plant
TP316Ti
A titanium stabilized version of 316 used where good resistance to intergranular corrosion and high temperature
strength is required.
TP317
Chemical processing tubing, Dyeing equipment, Ink manufacturing equipment, Pulp & paper manufacturing
equipment
TP347HFG
Mainly used for boilers in the termal power plant, reheaters and superheaters


Super-Austenitic steel

TP904L

High resistance to general corrosion in e.g. sulphuric and acetic acids, crevice corrosion, stress corrosion cracking, pitting in chloride bearing solutions.


Ferritic and Martensitic Steel

TP405
Used for applications where hardening upon cooling from high temperatures must be avoided. Has excellent
long-time stability up to 1200°F.
TP410
General purpose grade for use in mildly corrosive environments
TP430
Mechanical & structural tubing, Architectural tubing, Heat exchanger tubing, Condensers, Re-heaters, Evaporators.

Duplex

S31803
Typically used in heat exchangers, gas scrubbers, fans, chemical tanks, flowlines, marine and refinery applications.
S32750
Used in oil & gas, chemical process, power industries. At that heat-exchangers are main application.
S31254
With high levels of chromium, molybdenum, and nitrogen is especially suited for high-chloride environments such as brackish water, seawater and other high-chloride process streams.

Value-added services
BEVELING
Beveling Stainless Steel tubes contain one end angled,  so that it mates with a complementary tube end. Tubes can be beveled for certain applications in order to make welding of stainless steel tubes easier, which saves weld prep time and money compared to hand cutting.


HEAT TREATING & ANNEALING
Permanent Steel can heat treat some 400 series stainless steel seamless tube. Heat treating realizes stress as a result of hardening, depending upon the chemistry of the metal being treated. Heat treating is also used for tempering, quenching, normalizing, and solution annealing.


HONING & TURNING
During the honing/turning process, an abrasive rotating tool removes metal from the interior surface of a cylinder, pipe, or tube. The main purpose of honing is to finish the surface to a particular diameter and/or desired cylindrical geometric design. Honing is typically a secondary machining operation that completes a produce/part,  relieves stress created during production, or corrects features of the finished product. A typical production cycle is to drill, ream, heat treat, then hone.


POLISHING
POSITIVE MATERIAL IDENTIFICATION (PMI)
In some cases, it may be necessary to complete additional positive material identification testing. Permanent Steel can complete this testing in house or we can work with an independent laboratory to complete the testing. Please contact us for specific requirements.


UT TESTING
Ultrasonic Testing (UT) utilizes sound energy at high frequencies, in order to provide examinations and measurements of the stainless steel product. This aids in flaw detection/evaluation, dimensional measurements, etc.