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Stainless Steel Pipe & Tube 不銹鋼管

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Stainless Steel Pipe & Tube 不銹鋼管

詳細(xì)介紹

Stainless steel pipes are used for high-temperature applications. Stainless steel pipe has add the alloying elements like Nickel and Chromium to the common steel alloy. This addition of the alloying elements enhances the resistance of the steel to corrosion in harsh applications.

STAINLESS STEEL TYPES
As a general rule, any steel alloy that has at least 10.5% of chromium may be considered stainless steel. Austenitic Stainless Steel (Especially series 300 chromium-nickel alloys like 304, 310S, 316, 321, 347, etc), these are the most common grades of stainless steel. Grade 304/304L is the most common austenitic stainless steel that suits most corrosive applications. Any other grade in the 300 series enhances the basic features of SS304.

We GUTE mainly supply the Seamless or Welded stainless steel pipes or Tubes according to the Standard ASTM A312, ASTM A213, ASTM A269, ASTM AB676, ASTM B677, the main grades are TP304, TP304L, TP310S, TP316, TP316L, 316Ti, TP317, TP317L, TP321, TP347, TP347H, S31254, N08367, N08926, N08904. Each alloy has a specific structure and chemical composition ａnd mechanical properties.

ASTM A312 – For high temperature and general corrosive for seamless, welded, and heavy cold worked austenitic stainless steel pipes.

ASTM A213 stainless tubing for boiler, heat exhanger, covers the seamless ferric carbon steel and austenitic alloy stainless steel tube, applied for boiler, superheater, and heat-exchanger steel tubes.

ASTM A269 – General use stainless tubing for common application in seamless and welded.

ASME SB677 – Extremely corrosive resistance, covers the UNS N08904 (904L), UNS N08925, UNS N08926 (alloy 926), in seamless, of cold-drawn, and hot finished steel pipe and steel tube for the extremely corrosive services.

seamless ss tubeSeamless SS Tubestainless steel pipe supplierStainless steel Pipe SupplierSeamless steel pipe manufacturerSeamless steel Pipe Manufacturer
Stainless steel welded PipeStainless steel welded Pipestainless steel semless pipe Stainless steel Semless Pipe stainless steel TUBEStainless steel Tube

Stainless steel Pipe & Tube Chemical Composition:

GradeUNSC≤MnP≤S≤Si≤CrMoNi
TP304S304000.0820.0450.03118.0-20.0-8.0-11.0
TP304LS304030.03520.0450.03118.0-20.0-8.0-12.0
TP316S316000.0820.0450.03116.0-18.02.00-3.0010.0-14.0
TP316LS316030.03520.0450.03116.0-18.02.00-3.0010.0-14.0
316TiS316680.0820.0350.03116.0-19.01.80-2.5010.0-14.0
TP317S317000.0820.0450.03118.0-20.03.0-4.011.0-15.0
TP317LS317030.03520.0450.03118.0-20.03.0-4.011.0-15.0
TP321S321000.0820.0450.03117.0-19.0-9.0-12.0
TP310SS310080.0820.0450.03124.0-26.00.7519.0-22.0
TP347S347000.0820.0450.03117.0-19.0-9.0-13.0

S312540.0210.030.010.819.5-20.56.0-6.517.5-18.5

N083670.0320.040.03120.0-22.06.0-7.023.5-25.5

N089260.0220.030.010.524.0-26.06.0-7.019.0-21.0

N089040.0220.040.03119.0-23.04.0-5.023.0-28.0

N089250.0210.0450.030.519.0-21.06.0-7.024.0-26.0

Stainless steel Pipe & Tube Mechanical Properties:

Mechanical propertiesTensile,min,ksi[MPa]Yield,min,ksi[MPa]Elongation,%(min)Hardness,HB(max)
TP30475【515】30【205】35192
TP304L70【485】25【170】35192
TP31675【515】30【205】35192
TP316L70【485】25【170】35192
316Ti75【515】30【205】35192
TP31775【515】30【205】34192
TP317L75【515】30【205】35192
TP32175【515】30【205】35192
TP310S75【515】30【205】35192
TP34775【515】30【205】35192
S3125498【675】43【310】35220
N08367100【690】45【310】30241
N0892694【650】43【295】35256
N0890471【490】31【215】35192
N0892587【600】43【295】40217

The differents between these material grades:TP304 / 304L Stainless Steel Pipe (Tube)An Austenitic Chromium-nickel stainless steelGeneral purpose corrosion resistance(Non-magnetic except when cold worked)TP304H Stainless Steel Pipe (Tube)Higher carbon than Stainless Steel 304 for better high temperature creep propertiesCorrosion resistance same as TP304, used in high temperature over 1000 degrees F 
TP310S Stainless Steel Pipe (Tube)Superior heat resisting Austenitic stainless steelGood for continuous exposure to 2100 degrees F. General corrosion resistance better than Stainless Steel TP304 TP316 / 316L Stainless Steel Pipe (Tube)An Austenitic Chromium-nickel stainless steelImproved in the corrosion resistance to chloridesTP317L Stainless Steel Pipe (Tube)An Austenitic Chromium-nickel Molybdenum stainless steelImproved in chloride pitting resistance over Stainless Steel 316 Pipe. Used in Chemical, petroleum, pulp and paper industriesTP321 / 321H Stainless Steel Pipe (Tube)An Austenitic stainless steel that contains Titanium stabilizing elementsImproved intergranular corrosion resistance. Excellent for high temperature serviceTP347 / 347H Stainless Steel Pipe (Tube)An Austenitic stainless that contains Columbium stabilizing elementsImproved intergranular corrosion resistance. Excellent for high temperature service 254SMO(S31254) Stainless Steel Pipe (Tube)An Austenitic stainless steel with a high Molybdenum contentHigh resistance to pitting and crevice and general corrosion. Very high resistance to chloride stress corrosion cracking AL-6XN(N08367) Stainless Steel Pipe (Tube)An Austenitic stainless steel with a high Molybdenum contentExceptional resistance to chloride corrosion. Highly resistant to saltwater corrosion904L Stainless Steel Pipe (Tube)An Austenitic stainless steel with low Carbon contentGood resistance to pitting and crevice corrosion. Resistance to general corrosion in reducing acids
Manufacturing types and processes1. Seamless Hot Rolling ProcessesRound Pipe Billet → Heating → Perforation → Three Roll Skew Rolling, Continuous Rolling or Extrusion → Off Pipe → Sizing (Or Reducing Diameter)→ Cooling → Billet → Straightening → Water Pressure Test ( Or Flaw Detection) → Marking → Storage2. Seamless Cold Rolling (Cold drawn) ProcessesRound Pipe Billet → Heating → Perforation → Head → Annealing → Pickling → Oil (Copper) → Multi Pass Drawing (Cold Rolling) → Billet → Heat Treatment → Straightening → Water Pressure Test → Marking → Storage3. Longitudinal welding (Straight seam welding) processes. Including ERW, EFW.
Test: Tension Test, Flattening Test, Hardness Test, or Bend Test; Hydrostatic Test or nondestructive electric test.


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