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Spezilla Tube Co., Ltd.

Spezilla is really a professional supplier, they always give us technical advice and provide good quality tubes with very competitive price!

—— Thomas Hoover - United States

Good quality, fast delivery, Spezilla has been supplying heat exchanger tubes for our projects since 2008, we really appreciate your support!

—— Massimiliano Rossi - Italy

Spezilla supports our group very well, and now we are approved supplier of goverment, they are reliable and flexible! Spezilla always answers!

—— Jaime Arias - Argentina

Very competitive price and the tubes are well polished, we are very satisfied with Spezilla from our cooperation since year 2010.

—— Nathalie Gulli - Mexico

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TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213

China TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213 supplier
TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213 supplier TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213 supplier TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213 supplier TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213 supplier

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Product Details:

Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008
Model Number: ASME SA213

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: WOODEN BOXED
Delivery Time: WITHIN 30 DAYS
Payment Terms: T/T, L/C
Supply Ability: 100 TONS / MONTH
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Detailed Product Description
Tube Shape: U Bend Tube Manufacturing: Cold Drawn
Materials No.: TP321/321H OD: 1/2'' - 2''
WT: 0.035'' - 0.083'' Surface: SOLUTION ANNEALED

TP321/321H Stainless Steel U Bend Tube,U Tube Heat Exchanger SA213

 

Grade 321 is a common austenitic 18/8 stainless steel alloy, with the addition of titanium, making it a good choice in high temperature environments of up to 900° C. 321 stainless steel has good welding and forming capabilities and is widely used in operating temperature environments in excess of 500° C.

 

Stainless steel 321H, commonly referred as UNS S32109, is the higher carbon version of the 321 grade, to provide higher temperature strength.321/321H Pipes,Tubes and 321H pipe fittings are mainly used in manufacturing heat exchangers, pressure vessels, pharmaceutical and chemical processing equipments.

 

Standard Technical Range

  • OD 9.5mm - 38.1mm
  • WT up to 6.35mm
  • Bending radii 1.25 x OD up to 1700mm
  • Bends can be supplied in accordance with TEMA R / ASTM SA/A556
  • Leg length up to 15000mm
  • Heat treatment where required by electric furnance or direct resistance
  • Hydrotesting up to 10,000 psi

Additional Testing

  • Dye penetrant of 'U' bend area
  • PMI testing
  • Heat Treatment

Heat Treatment

We are equipped to carry out heat treatment of bends plus a minimum 150mm of leg.
 

Heat Treatment Equipment

  • Heat treatment equipment is computer controlled with the added facility of data recording.
  • An argon protective atmopshere is used inside stainless and special alloy tubes during heat treatment.
  • We can provide all types of annealing; solution annealing and stress relieving.

321/321H Stainless Steel Pipes, Tube Chemical Composition

Grade C Mn Si P S Cr Ni Ti N
321 0.08 max. 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-12.0 5 x (C+N) min. 0.1
 
(0.70max.)
321H 0.04 – 0.10 2.00 max. 0.75 max. 0.045 max. 0.03 max. 17.0 – 19.0 9.0-12.0 5 x (C+N) min. 0.1
 
(0.70max.)

321/321H Stainless Steel Pipes, Tube Mechanical Properties

  321
Density 7.92
Melting Range,℃ 1398-1446
Elongation % 40
Tensile Strength (Mpa) 515
Yield Strength (Mpa) 205
Hardness (Brinell) 217
 

 

Stainless Steel Tube Standards:

 

American standards:

 

ASTM A249: Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.

 

ASTM A269:Standard specification for welded austenitic stainless steel tubing for general service.

 

ASTM A688:Standard specification for welded austenitic stainless steel feedwater heater tubes.

 

ASTM A554:Standard specification for welded stainless steel mechanical tubing.

 

ASTM A268:Specification for seamless and welded Ferritic/Martensitic stainless steel tubing for General Service

 

ASTM A789:Specification for seamless and welded Ferritic/Austenitic stainless steel tubing for General Service

 

ASTM A312:Seamless/Welded austenitic stainless steel pipe

 

Germanic standards:

 

DIN17455:General purpose welded circular stainless steel tubes

 

DIN17457: Welded circular austenitic stainless steel tubes subject to special requirements; technical delivery conditions

 

European Standard:

 

EN 10217-7:Welded Steel Tubes for pressure purposes-Part 7 Stainless steel tubes

 

Materials - U-Bent Tube
Carbon Steel SA 179 / A 179
Carbon Steel SA 210 / A 210
Carbon Steel SA 334 / A 334
Stainless Steel SA 213 / A 213
  SA249 / A249
  SA268 / A268
  SA688 / A688
Duplex Stainless Steel SA 789 / A 789
Copper & Cu Alloys SB 111 / B 111
Titanium & Ti Alloys SB 338 / B 338
For different materials please contact our sales department.

TP321 / 321H Stainless Steel U Bend Pipe , U Tube Heat Exchanger SA213

 

Contact Details
Spezilla Tube Co., Ltd.

Contact Person: Anna Zheng

Tel: +8615221370790

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