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Help CenterASTM A789 General Purpose Ferritic/austenitic Stainless Steel Seamless and Welded Steel Pipes
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Basic Info.
Type
Seamless
Material
Stainless Steel
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape
Round
Transport Package
Packed in Bundle or Pack in Loose
Trademark
Permanent Steel Manufacturing Co., Ltd
Origin
China
Production Capacity
10000/Tons
Product Description
Product Description:
Stainless Steel pipe (Stainless Steel) is a hollow strip of cylindrical Steel, his scope of application as the pipeline of fluid transport, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural components. Stainless steel pipes are made of acid and heat resistant billets, heated, perforated, sized, hot rolled and cut.
Classification of stainless steel pipe: stainless steel seamless steel pipe and stainless steel welded steel pipe (seam steel pipe) basic two categories. According to the outer diameter shape of steel tube can be divided into round tube and special-shaped tube, what is widely used is circular steel tube, but also have a few square, rectangle, semicircle, hexagonal, equilateral triangle, octagonal special-shaped steel tube.
For the steel pipe under fluid pressure to carry out hydraulic test and ray flaw detection to test its pressure ability and quality, under the specified pressure does not leak, wet or expansion for qualified, some steel pipe according to the standard or the requirements of the side test, flaring test, flattening test.
Specification:
A:Stainless steel seamless pipe:
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 |
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 |
Used where higher corrosion resistance is required. Boat railings, Canopy supports, Chemical tubing, Column covers, |
TP316H |
Similar oxidation resistance to TP 316. Main areas of application: Heat exchangers, furnaces, chemical and |
TP321 |
Heat exchanger tubing, Chemical processing tubing, Pressure tank tubing. Suitable for heat resisting applications |
TP321H |
This is the high carbon version of TP 321 which ensures greater creep resistance. Behaves much the same as TP 321 |
TP316Ti |
A titanium stabilized version of 316 used where good resistance to intergranular corrosion and high temperature |
TP317 |
Chemical processing tubing, Dyeing equipment, Ink manufacturing equipment, Pulp & paper manufacturing |
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 |
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.B:Stainless steel welded pipe:
Sizes & Schedule Specifications
Size Range: 2" - 48"
Schedules: 5S, 10S, STD, XS, 40, 80, 100, 120, 160, XXS
Products: Stainless steel welded pipe, stainless steel erw pipe, stainless steel efw pipeGrades of Stainless Steel Tube
Austenitic: 201, 304/304L, 316/316L, 317/317L, 347/347H, 321/321H, 904L
Ferritic: 409, 430, 439, 441, 434, 436, 444, 446
Martensitic: 403, 410, 410S, 414/L, 441, 418, 420, 440, 416
Duplex: 2205/S31803, S32750, S32760
Manufacturing process:
Stainless steel welded tube is a steel pipe made of steel plate or strip steel that is crimped and formed by a unit and a mold. The production process of welded steel pipe is simple, the production efficiency is high, the variety and specification are many, and the equipment investment is small, but the general strength is lower than that of seamless steel pipe.
Processing for Stainless Steel Welded Pipe
Bar & Structural Cutting |
Products cut include Round Bar, Flat bar, Hex bar, Square bar, Tubing and Hollow Bar, Pipe, Angles, channels, Beams and Tees. Thickness range is 1/16″ to 28″diameter |
Production Cutting |
Stainless can provide production cutting for product diameters up to 4″. |
Pipe Threading |
Available thru 2″ in Diameter/All schedules |
Tubular Polishing |
Products polished included all tubular products, with OD & ID polishing available, Round Bar, Square Bar, Hex & Flat bar, Angles, Uneven Leg Angles, beams, and other shapes. |
Welded Stainless Steel Pipe Tolerances
NPS Designator |
Permissible Variations in Outside Diameter |
|
Over In. |
Under In. |
|
1/8 to 1-1/2, incl |
1/64 (0.015) |
1/32 (0.031) |
Over 1-1/2 to 4, incl |
1/32 (0.031) |
1/32 (0.031) |
Over 4 to 8, incl |
1/16 (0.062) |
1/32 (0.031) |
Over 8 to 18, incl |
3/23 (0.093) |
1/32 (0.031) |
Nominal Wall Thickness:
NPS Designator |
Outside Diameter in. |
Schedule 5S in. |
Schedule 10S in. |
Schedule 40S in. |
Schedule 80S in. |
1/4 |
0.540 |
0.065 |
0.088 |
0.119 |
|
3/8 |
0.675 |
0.065 |
0.091 |
0.126 |
|
1/2 |
0.840 |
0.065 |
0.083 |
0.109 |
0.147 |
3/4 |
1.050 |
0.065 |
0.083 |
0.113 |
0.154 |
1.0 |
1.315 |
0.065 |
0.109 |
0.133 |
0.179 |
1 1/4 |
1.660 |
0.065 |
0.109 |
0.140 |
0.191 |
1 1/2 |
1.900 |
0.065 |
0.109 |
0.145 |
0.200 |
2 |
2.375 |
0.065 |
0.109 |
0.154 |
0.218 |
2 1/2 |
2.875 |
0.083 |
0.120 |
0.203 |
0.276 |
3 |
3.500 |
0.083 |
0.120 |
0.216 |
0.300 |
3 1/2 |
4.000 |
0.083 |
0.120 |
0.226 |
0.318 |
4 |
4.500 |
0.083 |
0.120 |
0.237 |
0.337 |
5 |
5.563 |
0.109 |
0.134 |
0.258 |
0.375 |
6 |
6.625 |
0.109 |
0.134 |
0.280 |
0.432 |
8 |
8.625 |
0.109 |
0.148 |
0.322 |
0.500 |
10 |
10.750 |
0.134 |
0.165 |
0.365 |
0.500 |
12 |
12.750 |
0.156 |
0.180 |
0.375 |
0.500 |
C:Stainless steel decorative pipe:
ITEMS |
Stainless steel decorative pipe |
|||
Stainless welded pipe(round) |
Stainless square pipe |
Stainless rectangle pipe |
Stainless oval pipe |
|
|
|
|
|
5*48MM |
WT range |
0.12-4MM |
0.16-4MM |
0.16-4MM |
0.23-4MM |
Length range |
Normal length 3-6M,but can be custom-made as requirements. |
|||
Grade |
304/301/201/202/316/430/410/420/409etc. |
|||
Surface treatment |
Matte(usually used as industrial pipe)/Mirror finish(decoration pipe) |
|||
D:Stainless slotted tubes::
|
Grade:201/202/205/304/316/321 etc... |
|
Grade:201/202/205/304/316/321 etc... |
E:Stainless steel coil:
Thickness: 0.20-10.00mm
Width: 1000-1500mm
Grade: 304(2B),304(No.4),304(BA),304(HL),304(MR)316/L(2B),316(No.4)
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