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SS 321/321H U Bend Tube Manufacturers in India

SS 321/321H U Bend Tubes

520.00

As one of the largest ss 321/321H seamless pipe supplier and manufacturer in India, we are capable of offering the best prices for SS 321/321H U Bend tubes. All SS 321/321H U  Bend tubes are produced to meet the toughest quality requirements from our customers. Stainless steel 321/321H U Bend tubes produced by Metallica are capable of handling with high pressure and temperature.

We at Metallica, guarantee you lowest prices from our stock of over 300 tons in stainless steel 321/321H tubes. U Bend SS 321/321H tubes are mainly used for producing high temperature heat exchangers.

  • Our price list for SS 321/321H seamless pipes and tubes – Prices for U Bend SS 321/321H tubes mainly depend on the size and radius of the tubes. Since the pricing of U Bend SS 321/321H tubes is dependent on the design of the U tubes, we can quote the prices, on receipt of inquiries from our customers.
  • If you are interested in purchasing high quality ss 321/321H U Bend tubes, please contact us now for prices and product details. We guarantee lowest prices for stainless steel 321/321H U Bend tubes in India. Email Us on [email protected] | Call Us On +918928722715
  • U tube heat exchangers are generally designed for high temperature applications, especially steam condensing or hot oil systems. We can offer SS 321/321H U Bend Tube in OD (mm): 9.5, 12.7, 15.8, 16.0, 17.0, 18.0, 19.05, 20.0, 21.3, 25.4, 26.7, 31.8, 32.0, and 38.1

One of the largest manufacturer and supplier of SS 321/321H U Bend tubes in IndiaSS 321/321H U Bend tubes for heat exchangers are stocked and delivered to our customers in annealed and pickled condition. All tubes are cut to the specified leg lengths and internally cleaned with air, and ends are deburred.

Grade321/321H
TypeSeamless
Size9.5mm to 38.1mm
Thicknessupto 6.5mm
SpecificationASTM A213
ApplicationHeat Exchangers
Price (INR/Kg)520 to 800
Delivery2-4 Weeks

Description

SS 321/321H U Bend Pipes & Tubes for Heat Exchangers!

One of the largest manufacturer and supplier of stainless steel 321/321H seamless U bend tubes. All our tubes are 100% quality tested, which include chemical testing, mechanical testing as well as hydro testing. All SS 321/321H U bend Tubes are heat treated, solution annealed, and pass hydrostatic test and eddy current test.

Each SS 321/321H U bend tube of our range is quality checked by our quality team on every stage of production to deliver the clients defect free best quality products.

  • 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
  • All tubes are stress relieved after U-bending
  • Hydrotesting up to 10,000 psi

Why Buy AISI 321/321H, 1.4878/1.4541, UNS S32100/S32109 Seamless Pipes from Metallica Metals?

  • Large Scale Enterprise – Metallica is biggest stock holding, manufacturing and processing company of SS 321/321H U bend tubes in India. Our large volume production, sales and purchase enables us to offer our products at the most competitive prices in the industry.
  • Testing of Stainless Steel 321/321H U Bend Tubes – All SS 321/321H U bend tubes are subjected to hydrostatic test, eddy current test, chemical and mechanical tests during the various stages of production.
  • Marking & Packing of Stainless Steel 321/321H U Bend Tubes – Marking on all pipes is as per the predefined rules in the specification.
  • Test Certificates & Inspection of SS 321/321H U Bend Tubes – All our pipes are supplied with Mill test Reports, as per EN 10204 3.1. We can also allow third party inspection of all our products before delivery.
  • We have own QC team to control the quality to meet particular standard strictly
  • Short Lead Times – We can offer AISI 321/321H, 1.4878/1.4541, UNS S32100/S32109 U bend tubes and pipes with shortest delivery time.
  • We can produce either standard or non-standard of the stainless steel 321/321H U bend pipes.

What is 321/321H Stainless Steel?

Stainless Steel 321 is a basic austenitic 18/8 steel (Grade 304) blend of chromium and nickel is stabilised by Titanium (321) addition. SS 321 is used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Stainless Steel 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling, embrittlement and phase stability with resistance to subsequent aqueous corrosion. It is protected from temperatures ranging from 800 to 1500° F. The metal displays high strength and resistance to various forms of corrosions, including that from aqueous environments. Type 321 finds application in heavy welding components, along with dynamic environments that are subject to changes. Beyond this, stainless steel 321 has excellent forming characteristics, does not require annealing after being welded, and displays toughness in a range of temperatures. The metal shows strength even when exposed to cryogenic temperatures. Additionally, it is often chosen over Type 304 for its increased resistance to creep and rupture. Both metals may be susceptible to stress corrosion cracking. It is used to manufacture high quality carbon structural steel seamless steel tubes for hot rolling and cold drawing (rolling) of superheated steam pipe, boiling water pipe and locomotive boiler superheated steam pipe, large smoke pipe, small smoke pipe and arch brick.

SS 321H is a modification of SS 321 with a higher carbon content, to provide improved high temperature strength. In addition, 321H is stabilized by an addition of niobium to resist intergranular corrosion. It is also able to withstand higher temperatures than type 321, due to its elevated carbon levels. While 321H displays the same welding and forming characteristics of type 321, the metal cannot be hardened by heat treatment. It is utilized in situations where type 321 cannot withstand the high temperatures, typically those exceeding 1000° F. Type 321H displays better resistance against creep than both 321 and 304 stainless steels. 321H also shows resistance against acid corrosion in a variety of environments. Lower temperatures provide better resistance, but the metal is able to withstand up to a 10% acid solution, that has been diluted, at elevated temperatures. However, the metal shows very little resistance against chlorine or sulfuric solutions at any given temperature. Given their similar composition and characteristics, it is possible for stainless steels 321 and 321H to become dually certified.

Manufacturing Range for Stainless Steel 321/321H, 1.4878/1.4541, UNS S32100/S32109 Seamless or Welded Stainless Steel Pipes

ProductASTM A312 TP321/TP321H , 1.4878/1.4541, UNS S32100/S32109 Stainless Steel Pipes
SpecificationASTM A312 / A312M Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
TypeSeamless & Welded
Size RangeSize: 1/8” to 24” (10.3mm to 610mm) – Seamless
Size:1/8” to 36” (10.3mm to 914mm) – Welded
1/8” OD to 6” OD
Thickness10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH
Wall Thickness: 1mm to 60mm
Length6 Meter, Custom Lengths
Other GradesTP304, TP304L, TP304LN, TP316, TP316L, TP316LN, TP317, TP317/317L, TP321, TP347, TP310S
Test CertificatesMaterial Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
ASTM Reference Standards
  • A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels.
  • A370 Test Methods and Definitions for Mechanical Testing of Steel Products.
  • A480 A480M Specification for general requirements for Flat-rolled stainless and Heat-Resisting steel plate, sheet, and strip.
  • A632 Specification for Seamless and welded austenitic stainless-steel tubing (small-diameter) for general service.
  • A1016 A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes.
  • E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
TestingMechanical Testing Such as Tensile of Area, Hardness Test, Chemical Analysis – Spectro Analysis, Positive Material Identification – PMI Testing, Flattening Test, Micro and MacroTest, Pitting Resistance Test, Flaring Test, Intergranular Corrosion (IGC) Test
DocumentsCommercial Invoice, Packing List, Certificate of Origin, Fumigation Certificates, Raw Material Test Reports, Material Traceability Records, Quality Assurance Plan (QAP), Heat Treatment Charts, Test Certificates certifying NACE MR0103, NACE MR0175, Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Guarantee Letter, NABL approved Laboratory Test Reports

 

Chemical Composition of ASTM A312 TP321/TP321H, 1.4878/1.4541, UNS S32100/S32109 Seamless or Welded Stainless Steel Pipes

ELEMENT321321H
NI9.0 – 12.09.0 – 12.0
C0.08 max0.04 – 0.10
MN2.0 max2.0 max
P0.045 max0.045 max
S0.030 max0.030 max
SI1.0 max1.0 max
CR17.0 – 19.017.0 – 19.0
TI5(C+N) – 0.70 max4(C+N) – 0.70
N0.10 max0.10 max

Physical Properties of ASTM A312 TP321/TP321H, 1.4878/1.4541, UNS S32100/S32109 Seamless or Welded Stainless Steel Pipes

DENSITY7.92 g/cm 3 / 0.286 lb/in 3
MELTING POINT1398 – 1446 (°C) / 2550 – 2635 (°F)
ANNEALED1040 – 1100 (°C) / 1900 – 2000 (°F)
QUENCHRapid Air/Water
Coefficient of Thermal Expansion (min/in)-°Fat 68 – 212°F9.2
at 68 – 1832°F20.5
Thermal Conductivity BTU/hr-ft-°Fat 200°F9.3
Specific Heat BTU/lbm -°Fat 32 – 212°F0.12
Modules of Elasticity (annealed)2-psiin tension (E)28 x 10 ^6

Mechanical Properties of ASTM A312 TP321/TP321H, 1.4878/1.4541, UNS S32100/S32109 Seamless or Welded Stainless Steel Pipes

GradeTensile StrengthYield Strength 0.2%Elongation –Hardness
ksi (min.)Offset ksi (min.)% in 50 mm (min.)(Brinell) MAX
321753040217

Other Grades Chemical Composition Comparision

GradeUNSComposition, % in Max.
DesignationCMnPSSiCrNiMoN
TP304S304000.0820.0450.03118.0–208.0–11. . .. . .
TP304LS304030.03520.0450.03118.0–208.0–13. . .. . .
TP304LNS304530.03520.0450.03118.0–208.0–11. . .0.10-0.16
TP316S316000.0820.0450.03116.0–1810.0–142.00–3. . .
TP316LS316030.03520.0450.03116.0–1810.0–152.00–3. . .
TP316LNS316530.03520.0450.03116.0–1810.0–13. . .0.10-0.16
TP317LS317000.03520.0450.03118.0–2011.0–153.0–4. . .
TP321S321000.0820.0450.03117.0–199.0–12. . .. . .
TP347S347000.0820.0450.03117.0–199.0–13. . .. . .

Other Grades Mechanical Properties Comparision

GradeUNS DesignationTensile Strength, Min. Ksi [MPa]Yield Strength, Min. Ksi [MPa]
TP304S3040075 [515]30 [205]
TP304LS3040370 [485]25 [170]
TP316S3160075 [515]30 [205]
TP316LS3160370 [485]25 [170]
TP317LS3170370 [485]25 [170]
TP321S3210075 [515]30 [205]
TP347S3470075 [515]30 [205]
TP347HS3470975 [515]30 [205]
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