317L Stainless Steel Seamless Pipes & Tubes

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317L Stainless Steel Seamless Pipes and Tubes  Manufacturer
317L Stainless Steel Seamless Pipes and Tubes

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Karma Piping is one of the major Indian manufacturers, exporter & suppliers of 317L Stainless Steel Seamless Pipes and Tubes & OCTG, CRA (Corrosion-Resistant Alloy) Seamless Tubes, Stainless Steel , Super Duplex , Duplex , Welded & Semaless, Carbon Steel Seamless Pipes, Tubes, Capillary Pipes & ‘U’ Tubes for applications in oil & gas, LNG, Thermal & Nuclear Power Plants, Chemical Industries, Fertilizers Plants, (petro) chemical, shipbuilding, desalination, water treatment, energy industries, EPC and Pipes for General Engineering Purpose.

Karma Piping operates according to an ISO 9001:2008 certified quality programme. A complete range of testing facilities on-site contributes to consistent quality control.

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Composition

Chemical Composition in Weight Percent
per ASTM A240 for Cited Alloys

Element

Type 317L

Type 317LMN

Carbon

0.03 max

0.03 max

Manganese

2.00

2.00

Silicon

0.75 max

0.75 max

Chromium

18.00 – 20.00

17.00 – 20.00

Nickel

11.00 – 15.00

13.50 – 17.50

Molybdenum

3.00 – 4.00

4.00 – 5.00

Phosphorus

0.04 max

0.04 max

Sulfur

0.03 max

0.03 max

Nitrogen

0.10 max

0.10 – 0.20

Iron

Balance

Balance

UNS No.

S31703

S31726

Corrosion Resistance in Boiling Solutions and ASTM Tests

Test
Solution

Corrosion Rate in Mils per Year (mm/y)
for Cited Alloys

Alloy
316L

Alloy
317L

Alloy
317LMN

Alloy
276

20%
Acetic Acid

0.12
(<0.01)

0.48
(0.01)

0.12
(<0.01)

0.48
(0.01)

45%
Formic Acid

23.41
(0.60)

18.37
(0.47)

11.76
(0.30)

2.76
(0.07)

10%
Oxalic Acid

48.03
(1.23)

44.90
(1.14)

35.76
(0.91)

11.24
(0.28)

20%
Phosphoric
Acid

0.06
(0.02)

0.72
(0.02)

0.24
(<0.01)

0.36
(0.01)

10%
Sulfuric Acid

635.7
(16.15)

298.28
(7.58)

157.80
(4.01)

13.93
(0.35)

10%
Sodium
Bisulfate

71.57
(1.82)

55.76
(1.42)

15.60
(0.40)

2.64
(0.07)

50%
Sodium
Hydroxide

77.69
(1.92)

32.78
(0.83)

85.68
(2.18)

17.77
(0.45)

ASTM A262
Practice B
(FeSO4H2SO4)

26.04
(0.66)

20.76
(0.53)

17.28
(0.44)

264.5
(6.72)

ASTM A262
Practice C
(65% HNO3)

22.31
(0.56)

19.68
(0.50)

16.32
(0.42)

908.0
(23.06)

ASTM A262
Practice E
(Cu•CUSO4•H2SO4)

Pass

Pass

Pass

Pass

The low carbon (less than 0.03%) of these alloys effectively prevents sensitization to intergranular corrosion during thermal processes such as welding or forging. The higher chromium contents of 317LMN and Alloy 317L stainless steels also provide superior resistance to intergranular attack. It should be noted that prolonged exposure in the range 800 to 1400°F (427-816°C) can be detrimental to intergranular corrosion resistance and may also cause embrittlement due to precipitation of sigma phase. The higher nitrogen content of the 317LMN alloy retards the precipitation of sigma phase as well as carbides.

Pitting Resistance Equivalents

Alloy

PRE

Alloy 316

25

Alloy 317L

30

Alloy 317LMN

38

Alloy 625

52

Alloy C276

69

High molybdenum and nitrogen contents can significantly improve pitting resistance as illustrated in the preceding table of Pitting Resistance Equivalents (PRE). The PRE is based on the results of corrosion tests in which it was found that nitrogen was 30 times more effective than chromium and approximately 9 times more effective than molybdenum in enhancing chloride pitting resistance.
The temperature of the onset of crevice corrosion as determined in a modified AST G-48B test is a useful means of ranking the relative resistance of stainless and nickel-base alloys. The Critical Crevice Corrosion Temperatures table that follows demonstrates that crevice corrosion resistance for austenitic stainless steels increases with the alloy’s molybdenum and nitrogen content.

Crevice Corrosion in a Simulated
FGD System Environment

Alloy

Weight Loss (g/cm2)
for Tests* at Cited Temperatures

24°C
(75°F)

50°C
(122°F)

70°C
(158°F)

Alloy 317L

0.0007

0.0377

0.0500

Alloy 317LMN

0.0000

0.0129

0.0462

Alloy 625

0.0000

0.0000

0.0149

Alloy C276

0.0000

0.0001

0.0004

*72-hour exposure based on ASTM G-48B procedure using the following solution:
7 vol.%H2SO4, 3 vol%HCI, 1 wt% CuCl2, 1 wt%FeCl3
Oxidation Resistance
The chromium-nickel-molybdenum steels all have excellent resistance to oxidation and a low rate of scaling in ordinary atmospheres at temperatures up to 1600-1650°F (871-899°C).
Fabrication
The physical and mechanical properties of 317LMN and Alloy 317L stainless steels are similar to those of more conventional austenitic stainless steels and can, therefore, be fabricated in a manner similar to Alloys 304 and 316.

Mechanical Properties 
The ASTM specified minimum tensile properties and maximum hardness for annealed plate, sheet, and strip products are shown in the following table.

Minimum Mechanical Properties per
ASTM A-240 for Cited Alloys

Property

Alloy 317L

Alloy 317LMN

Ultimate Tensile Strength, ksi (MPa)

75
(515)

80
(550)

0.2% Yield Strength, ksi (MPa)

30
(205)

35
(240)

% Elongation in 2″ (5.1 cm)

40

40

Hardness, Maximum

217BHN

-

UNS No.

S31703

S31726

Physical Properties
The physical property data which follows represent the iron-chromium-nickel-molybdenum class of stainless steels. For all practical purposes, the data are applicable to 317LMN and Alloy 317L stainless steels. All properties are at room temperature (68°F, 20°C) unless stated otherwise.

Density

0.29
8.0

lb/in3
g/cm3

Modulus of Elasticity

29•106
200

psi
Gpa

Melting Range

2410 to 2550
1320 to 1400

° F
°C

Thermal Conductivity
    
68 to 212°F
    
20 to 100°C

100.8
14.6

Btu/ft2-hr-°F-in
Watts/m- K

Coefficient of Thermal Expansion
77°F (25°C) to:    
   
212°F (100°C)
    
932°F (500°C)
    
1832°F (1000°C)

9.2 (16.5)
10.1 (18.2)
10.8 (19.5)

10-6/°F (10-6/°C)
10-6/°F (10-6/°C)
10-6/°F (10-6/°C)

Specific Heat

0.11
0.46

Btu/lb-°F
J/g-°K

Electrical Resistivity

31.1
0.79

µ-ohm-in
µ-ohm-in

Magnetic Permeability
    
Fully annealed
   
0.5" plate
    
65% cold-worked     0.5" plate

1.0028
1.0028

µ at H = 200 oe
µ at H = 200 oe

 

Packaging & Shipping

Utmost care is taken towards Packing of the 317L Stainless Steel Seamless Pipes and Tubes so as to ensure that the resultant Coils, Foils, Tubes, Pipes and Fittings reach in the same condition as desired by our valued customers.
Packing specifications for various products are:

  • Larger Dia Fusion Welded Pipes are packed with aluminium end caps in a wooden crates.
  • S.S. Automotive Exhaust Pipes & Scheduled pipes both are packed with plastic end caps in wooden crates.
  • Cold Drawn Seamless Stainless Tubes are packed with plastic end caps in a wooden box with an inside thermocoal covering.
  • Coils and Foils are packed in wooden crates.

317L Stainless Steel Seamless Pipes and Tubes Packaging

Packed 317L Stainless Steel Seamless Pipes and Tubes

317L Stainless Steel Seamless Pipes and Tubes Packaging

Packed 317L Stainless Steel Seamless Pipes and Tubes


Other Packaging information:

  • Bundle Packing
  • Bundle Packing
  • Wooden Case
  • Wooden Case
  • Wooden Case for U Tubes
  • Reinforced by angle bar

 

Why us?

  • Stainless Steel Seamless Pipes & Tubes Manufacturer since 1996
  • The annual capacity of the plant equals about 12.000 tons
  • Specialized in Pipes & Tubes, Stainless Steel Pipe & Carbon Steel Pipe
  • We export seamless tubes / welded tubes everywhere in the world
  • We have our own warehouse of 10,000 feet, so we can offer best price in the market
  • Supplier and trader of IBR Materials like IBR approved Pipes, IBR Certified Tubes

Heilights:

  • Pipes up to 24" made in continuous production from coil
  • Pipes up to 80" made from single plates
  • Maximum thickness 40 mm

Strength:

  • Contacts with major mills & stockists around the world.
  • Can offer ex-stock materials as well as mill delivery with nominal margins.
  • Complete in-house testing facilities viz. hydro, eddy current, UT, chemical analysis,
  • physical/mechanical, PMI, microscopic examination, etc…
  • Prime and genuine materials with co-relating original test certificates.

Other Grade 317L Stainless Steel Products:

  • 317L Stainless Steel Pipe Fittings
  • 317L Stainless Steel Forged Fittings
  • 317L Stainless Steel Threaded Fittings
  • 317L Stainless Steel Buttweld Fittings
  • 317L Stainless Steel Elbow
  • 317L Stainless Steel Tubing
  • 317L Stainless Steel Flanges
  • 317L Stainless Steel Forgings
  • 317L Stainless Steel Rod / Rods
  • 317L Stainless Steel Bar / Bars
  • 317L Stainless Steel Wire
  • 317L Stainless Steel Angle
  • 317L Stainless Steel Channel
  • 317L Stainless Steel Nuts
  • 317L Stainless Steel Bolts
  • 317L Stainless Steel Fasteners
  • 317L Stainless Steel Sheets / Sheet
  • 317L Stainless Steel Plates / Plate
  • 317L Stainless Steel Engineering & Industrial Items

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