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Rajgranth Metal & AlloysRAJGRANTH
Product

Stainless Steel Seamless Pipes

Seamless pipe is drawn or extruded from a solid billet, so it carries no longitudinal weld and no heat-affected zone. That matters wherever the line sees pressure cycling, elevated temperature or an aggressive medium — which is why it dominates refinery, chemical and power service. RGM manufactures and stocks seamless pipe across the full austenitic range plus duplex, super duplex, 904L, SMO 254, 17-4PH and Alloy 20.

15
Grades
26
Standards
8
Finishes
7304
HSN
01Product description

Stainless Steel Seamless Pipes: manufacturer, stockholder and exporter in Mumbai, India

Seamless pipe is drawn or extruded from a solid billet, so it carries no longitudinal weld and no heat-affected zone. That matters wherever the line sees pressure cycling, elevated temperature or an aggressive medium — which is why it dominates refinery, chemical and power service. RGM manufactures and stocks seamless pipe across the full austenitic range plus duplex, super duplex, 904L, SMO 254, 17-4PH and Alloy 20. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.

About our seamless Pipes

Seamless pipe from 1/8″ NB to 40″ NB, in schedules 5 through XXS, across austenitic, duplex and high-alloy grades. We manufacture, stock, supply and export stainless Steel Seamless Pipes from Mumbai, Maharashtra, in 15 grades, so most requirements can be met from held stock instead of waiting on a mill. The range includes nickel alloys (Hastelloy C22, Inconel 600 and Nickel Alloy 200) alongside stainless steel and duplex grades.

Sizes and range

Our published range covers outside diameter 10.3 to 609.6 (mm), nominal bore 1/8″ NB, 40″ NB (1/4″ to 24″ held as primary stock range), schedule SCH 5 to SCH XXS, wall thickness 0.71 to 8.0 (SWG, mm), length 5 m, 6.5 m (Customised up to 12 m per requirement) and pipe ends Plain, Bevelled. Sizes outside the stocked range can be produced to order; send the dimensions with your enquiry.

Grades available

Stainless Steel Seamless Pipes are available in 202, 304 / 304L, 310 / 310S, 316 / 316L, 317 / 317L, 321 / 321H, 347 / 347H, 904L, Duplex / Super Duplex, 254 SMO, 17-4 PH, Alloy 20, Inconel 600, Hastelloy C22 and Nickel 200. Each grade has its own page with composition, designations, mechanical properties and the sizes we hold.

Standards and finishes

Material is supplied to ASTM A213 / ASME SA-213, ASTM A269, ASTM A312 / ASME SA-312, ASTM A376 / ASME SA-376, ASTM A789 / ASME SA-789, ASTM A790 / ASME SA-790, ASTM A268 / ASME SA-268, ASTM A511, ASTM B163 / ASME SB-163 and ASTM B407 / ASME SB-407 and 16 further specifications. Finishes and conditions include Bright Annealed (CFA), Solution Annealed (CFD), Electro Polished (EP), Polished (APP), Annealed and Pickled (AP), Mirror Polish, Matt Polish and Cold Drawn. HSN code 7304.

Applications and industries

Stainless Steel Seamless Pipes from Rajgranth are used in chemical processing, fertiliser plant, refinery, petroleum, dairy, pharmaceutical, nuclear, power and energy, oil — onshore and automotive. We supply across India and export to markets in the Middle East, Africa, Europe, Asia, North America and South America.

Why buy seamless Pipes from Rajgranth

Material is supplied with documentation, tested in house across 18 listed testing facilities, and covered by our ISO 9001:2015 quality management system. Rajgranth Metal & Alloys has been trading since 1980, is self-funded and debt-free, and despatches most orders from its Mumbai stockyard within two days.

Also searched as

  • stainless Steel Seamless Pipes manufacturer in Mumbai
  • stainless Steel Seamless Pipes stockist
  • stainless Steel Seamless Pipes supplier in India
  • stainless Steel Seamless Pipes exporter
  • seamless Pipes 202

Specification

07 rows
Outside diameter
10.313.717.121.326.733.442.248.360.373.088.9114.3141.3168.3219.1273.1323.9355.6406.4457.2508.0609.6

mm

Nominal bore
1/8″ NB40″ NB

1/4″ to 24″ held as primary stock range

Schedule
SCH 5SCH 10SCH 20SCH 40SCH 80SCH 120SCH 160SCH XXS
Wall thickness
0.710.911.211.622.032.52.83.03.254.05.06.08.0

SWG, mm

Length
5 m6.5 m

Customised up to 12 m per requirement

Pipe ends
PlainBevelled
Marking
SizeGradeSpecificationHeat number
Sizes outside these ranges are regularly supplied to order. Send the requirement and we will confirm against stock.

Surface finishes

08
  • Bright Annealed (CFA)
  • Solution Annealed (CFD)
  • Electro Polished (EP)
  • Polished (APP)
  • Annealed and Pickled (AP)
  • Mirror Polish
  • Matt Polish
  • Cold Drawn

Standards

26
  • ASTM A213 / ASME SA-213
  • ASTM A269
  • ASTM A312 / ASME SA-312
  • ASTM A376 / ASME SA-376
  • ASTM A789 / ASME SA-789
  • ASTM A790 / ASME SA-790
  • ASTM A268 / ASME SA-268
  • ASTM A511
  • ASTM B163 / ASME SB-163
  • ASTM B407 / ASME SB-407
  • ASTM B423 / ASME SB-423
  • ASTM B444 / ASME SB-444
  • ASTM B729
  • EN 10216-5
  • EN 10297-2
  • DIN 17455
  • DIN 17456
  • DIN 17457
  • DIN 17458
  • DIN 17459
  • DIN 28180
  • JIS G 3459
  • JIS G 3463
  • NF A 49-117
  • NF A 49-217
  • NF A 49-317
01Grades

Seamless Pipes by grade

Each grade page carries its own composition, corrosion behaviour, standards cross-reference and limitations.

Applications

18
  • Chemical processing
  • Fertiliser plant
  • Refinery
  • Petroleum
  • Dairy
  • Pharmaceutical
  • Nuclear
  • Power and energy
  • Oil — onshore
  • Automotive
  • Aerospace
  • Paper and pulp
  • Plant engineering
  • Railway
  • Gas
  • Marine
  • Shipbuilding
  • Semiconductor

Industries served

12

Testing and verification

18
  • Spectrometer
  • Chemical Testing Laboratory
  • Positive Material Identification (PMI)
  • Spectro Test
  • Tensile Testing Machine
  • Hardness Testing Machine
  • Portable Hardness Tester
  • Flattening Test
  • Reverse-Bend Test
  • Hydrostatic Test Machine
  • Eddy Current Testing Machine
  • Ultrasonic Thickness Gauge
  • Air Under Water Test
  • Borescope Test
  • Metallurgical Microscope
  • Surface Roughness Tester
  • Dial Vernier Caliper
  • Intergranular Corrosion Test
Complete technical reference

Stainless Steel Seamless Pipes

The full detail for this product as supplied from our Mumbai stockyard: sizes, grades, standards, tolerances, tests and applications.

  • Stainless Steel Seamless Pipes

Stainless Steel Seamless Pipes Manufacturer - Stockholder - Supplier - Exporter

9 entries

Stainless Steel Seamless Pipes Manufacturer, Stockholder, Supplier, and Exporter in Mumbai, India. With years of experience and expertise in the industry, we pride ourselves on delivering top-notch products that meet international standards. Our range of stainless steel seamless pipes is made from premium-quality raw materials to provide superior strength and durability.

Stainless Steel Seamless Pipes21
ProductStainless Steel Seamless Pipe
TypesCold Rolled and Hot Rolled Seamless Pipe
SS Grades303, 304, 304L, 304LN, 304H, 309, 310, 316, 316L, 316LN, 316H, 316TI, 317, 317L, 317LN, 321, 321H, 347, 347H, 904, 904L, duplex & super duplex SA240 UNS NO. S31803, S32205, S32550, S32750, S32760, SMO 254, 17-4PH, Alloy 20, and more grade as per requirement.
Surface FinishBright Annealed (CFA), Solution Annealed (CFD), Electro Polished (EP) and Polished (APP)
Diameter1/4“Nb to 24” Nb (6MM OD to 610MM OD)
ThicknessSch 5, Sch 10, Sch 20, Sch 40, Sch 80, Sch 120, Sch 160, and Sch XXS
LengthUp to 6 meters (depending on size)
SpecificationASTM A 269 / A 312 / A 213/ A 790 and A 789 ASME SA 213 / SA 269 / SA 312 / SA 789 / SA 790SB 163 / SB 165 / SB 423/ SB 444 / SB 729 / SB 829/EN 10216-5 / EN 10297-2 / DIN 2391

Stainless Steel Seamless Pipes GRADES

Grades 304

Grades 310

Grades 316

Grades 317

Grades 321

Grades 347

Grades 904

Duplex Super Duplex

SMO 254

17-4 PH

ALLOY 20

Stainless Steel Seamless Pipes Specifications

Outer Diameter (MM)

10.3mm , 13.7mm , 17.1mm , 21.3mm , 26.7mm , 33.4mm , 42.2mm , 48.3mm , 60.3mm , 73.0mm , 88.9mm , 114.3mm , 141.3mm , 168.3mm , 21.1mm , 273.1mm , 323.9mm , 355.6mm , 406.4mm , 457.2mm , 508.0mm , 609.6mm

Outer Diameter (inches)

1/8"NB , 1/4"NB , 3/8"NB, 1/2"NB, 5/8"NB, 3/4"NB, 7/8"NB, 1"NB, 1 ¼"NB, 1 ½"NB, 2"NB 2 ½"NB, 3"NB, 3 ½"NB, 4"NB, 5"NB, 6"NB, 8"NB , 10"NB, 12"NB, 14"NB, 16"NB , 20"NB, 22"NB, 24"NB, 30"NB , 32"NB, 36"NB, 40"NB.

Wall Thickness (SWG)

0.71mm , 0.91mm , 1.21mm , 1.62mm , 2.03mm , 2.5mm , 2.8mm , 3.0mm , 3.25mm , 4.0mm , 5.0mm , 6.0mm , 8.0mm

Wall Thickness (Schedule)

17 entries

Sch 5 , Sch 10 , Sch 20, Sch 40 , Sch 80 , Sch 120 , Sch 160 , Sch xxs

Standard Length

5 meter to 6.5 meters

Customised Length

As per Client Requirement upto 12 meters.

Delivery Condition

Annealed and Pickled (AP), Mirror Polish, Bright Annealed (BA), Matt Polish, Cold Drawn.

Price

Stainless Steel Pipes prices will vary depend upon specification and quantity required. Please reach to our sales team.

Testing Facilities

  • Tensile Testing Machine
  • Hardness Testing Machine
  • Portable Hardness Tester
  • Hydrostatic Test Machine
  • Eddy Current Testing Machine
  • Spectrometer
  • Metallurgical Micro Scope
  • Chemical Testing Laboratory
  • Surface Roughness Tester
  • Positive Material Identification (PMI) Testing
  • Dial Vernier Caliper
  • Ultrasonic Thickness Gauge
  • Air under Water Test
  • Spectro Test
  • Borescope Test
  • Flattening Test
  • Reverse - Bend Test

International Standard

ASTM/ASME Standards: ASTM A213/ASME SA-213, ASTM A312/ASME SA-312, ASTM A376/ASME SA-376, ASTM A789/ASME SA-789, ASTM A790/ASME SA-790, ASTM A268/ASME SA-268, ASTM A269, ASTM A511, ASTM B729, ASTM B163/ASME SB-163, ASTM B407/ASME SB-407, ASTM B423/ASME SB-423, ASTM B444/ASME SB-444.

German Standards : DIN 17455, DIN 17456, DIN 17457, DIN 17458,DIN 17459, DIN 28180

NF Standards (AFNOR Standard) :NF A 49-117, NF A 49-217, NF A 49-317

JIS Standards : JIS G 3459, JIS G 3463

European Standard :EN 10216-5

Pipes Pressure Rating

Variable as per Sizes available in PSI / Bar.

Marking on Pipes

Size, Grade / material, Specification, Heat number.

Hsn Code

Hsn Code of Stainless Steel Pipes is 7304 (first four digits).

Pipes Ends

Plain Ends, Beveled Ends.

Stainless Steel Seamless Pipes Technical Data

163 entries
  • Pipes Dimensions
  • ASTM/ASME – Standards
  • Chemical Composition
  • Mechanical Properties
  • Grades Designation

ANSI B36.19 STAINLESS STEEL PIPE DIMENSION IN MM & WEIGHT PER KG.

Nominal Pipe Size

Outside Diameter

Schedule 5 S

Schedule 10 S

Schedule 20 S

Schedule 40 S

Schedule 80 S

Schedule 160 S

XXS

mm

inch

WT mm

Weight (KGM)

3

1/8

10.3

1.2

0.20

1.24

0.28

1.5

0.33

1.73

0.37

2.41

0.47

-

6

1/4

13.7

1.65

0.49

2.00

0.58

2.24

0.630

3.02

0.80

10

3/8

17.1

0.63

0.74

2.31

0.840

3.20

1.10

15

1/2

21.3

2.11

1.00

2.30

1.07

2.77

1.27

3.73

1.62

4.75

1.94

7.47

2.55

20

3/4

26.7

1.03

1.28

1.52

2.87

1.69

3.91

2.20

5.56

2.90

7.82

3.64

25

1

33.4

1.30

2.09

3.38

2.50

4.55

3.24

6.35

4.24

9.09

5.45

32

1.1/4

42.2

2.70

3.00

3.56

3.39

4.85

4.47

5.61

9.70

7.77

40

1.1/2

48.3

1.91

3.11

3.55

3.68

4.05

5.08

5.41

7.14

7.25

11.1

10.18

50

2

60.3

2.40

3.93

5.44

5.54

7.48

8.74

11.11

11.07

13.44

65

2.1/2

73.0

3.69

3.05

5.26

4.00

6.81

5.16

8.63

7.01

11.41

9.53

14.91

14.02

20.39

80

88.9

4.51

6.45

8.37

5.49

11.29

7.62

15.27

21.30

15.24

27.68

100

4

114.3

5.84

8.36

4.50

12.18

6.02

16.07

8.56

22.32

13.49

33.54

17.12

41.03

125

5

141.3

9.47

3.40

11.57

5.00

16.80

6.55

21.8

30.97

15.88

49.11

19.05

57.43

150

168.3

11.32

13.84

25.36

7.11

28.26

10.97

42.56

18.25

67.53

21.95

79.22

200

8

219.1

14.79

3.76

19.96

33.31

8.18

42.55

12.7

64.64

23.01

111.27

22.23

107.92

250

273.1

22.63

4.19

27.78

41.77

9.27

60.31

96.01

28.58

172.33

25.40

155.15

300

12

323.8

3.96

31.25

4.57

36.00

49.7

73.88

132.05

33.32

238.76

186.97

350

14

355.6

34.36

4.78

41.3

7.92

67.80

11.13

94.59

  • ASTM A 312 TP 304
  • ASTM A 312 TP 316L
  • ASTM A 312 TP 317L

400

16

406.4

41.56

47.29

77.83

123.30

450

18

457.2

46.81

53.26

87.71

14.27

155.80

500

508.0

59.25

68.61

117.14

15.09

183.42

600

24

610.0s

5.54s

82.47

94.45

141.12

17.48

255.41

Stainless Steel Pipes and Tubing ASTM Specification & Tolerances91
Specification14Allowable Outside DiameterAllowable Wall ThicknessExact LengthTesting14
Variation in mmVariationTolerance in mm
NominalOverUnder%Over%UnderOverUnder
Diameter
ASTM A213/ ASME SA 213 Seamless Boiler Superheater and Heat Exchanger Pipes17Under 25.40.10160.10162003.1750Flattening Test
25.4-38.1 incl.0.15240.15242203.1750Tension Test
38.1-50.8 excl.0.20320.20322203.1760Flare Test
50.8-63.5 excl.0.2540.254204.460Hardness Test
63.5-76.2 excl.0.30480.30482204.760100% Hydrostatic test
76.2-101.60.3810.3812204.760Refer to ASTM A450/
incl.SA 450
ASTM A249/ ASME SA 249 Welded Boiler Superheater, Heat Exchanger And Condenser Pipes19Under 25.40.10160.101610-103.1750Tension Test
25.4-38.1 incl.0.15240.152410-103.1750Flattening Test
38.1-50.8 excl.0.20320.203210-103.1750Flange Test
50.0-63.5 excl.0.2540.25410-104.7620Reverse Bend Test
63.5-76.2 excl.0.38480.384810-104.7620Hardness Test
76.2-101.60.381120.381121012-10124.76212012100% Hydrostatic Test Refer to ASTM A450/ SA 45012
incl.
Minimum Wall Pipes +18%
0 available On request
ASTM A269/ ASME SA 269 Seamless & Welded Tubing for General Service17Untp12.70.130.1315-153.20Flare Test (Seamless Only)
12.7-38.1 excl.0.130.1310-103.20Flange Test (Welded Only)
38.1-88.9 excl.0.250.2510-104.80Hardness Test
88.9-139.70.380.3810-104.80Reverse Flattening
excl.Test
139.7-203.20.76120.76121012-10124.812012(Welded only)
excl.100% Hydrostatic Test Refer to ASTM A269/ SA 269
ASTM A270/ ASME SA 270 Seamless & Welded Sanitary Tubing1825.40.050.210-103.20Reverse flattening Test
38.10.050.210-103.20100% Hydrostatic Test
50.80.050.2810-103.20External' polish on all
Pipes
60.5120.05120.28121012-10123.212012Refer to ASTM A270/
SA 270
76.20.080.310-103.20
101.60.080.3810-103.20
ASTM A312/ ASME SA 312 Seamless & Welded Pipes173.175-38.10.40.79Minimum Wall 12.5% under nominal wall Specified276.4 00Tension Test
incl.
38.1-1016 incl.0.790.796.4 00Flattening Test
101.6-203.21.590.796.4 00100% Hydrostatic Test
incl.
(Normally RandomRefer to ASTM A530/
Lengths orderedSA 530
ASTM A358/ ASME SA 358 Welded Pipes13219.08-0.50%1313-0.3131361313Refer to ASTM A530/ SA 53013
750mm or
0.01 inch
CHEMICAL COMPOSITION ( IN PERCENTAGE )111
GradeC (Max)Mn (Max)P (Max)S (Max)Si (Max)CrNiMoNitrogen (Max)Cu/ Others
3010.1520.0450.03116.00 – 18.006.00 – 8.00–0.1–
3040.0820.0450.030.7518.00 – 20.008.00- 10.50–0.1–
304L0.0320.0450.030.7518.00 – 20.008.00- 12.00–0.1–
310S0.0820.0450.031.524.00- 26.0019.00 – 22.00–––
3160.0820.0450.030.7516.00 – 18.0010.00 – 14.002.00 – 3.000.1–
316L0.0320.0450.030.7516.00 – 18.0010.00 – 14.002.00 – 3.000.1–
3170.0820.0450.030.7518.00 – 20.0011.00 – 14.003.00 – 4.000.1–
317L0.0320.0450.030.7518.00 – 20.0011.00 – 15.003.00 – 4.000.1–
3210.0820.0450.030.7517.00 – 19.009.00 – 12.00–0.1Ti5 ( C + N ) Min or 0.70 max
3470.0820.0450.030.7517.00 – 19.009.00 – 13.00––Cb= 10x ( C Min ) or 1.00 Max
4090.0810.040.01110.50 – 11.750.5––Ti= 6x (C+ N ) Min or 0.70 Max
409M0.030.81.20.030.030.40.7511.00- 12.001.5 max.––Ti= 6x (C) Min or 0.70 Max
410S0.0810.040.03111.50- 13.500.6–––
4100.1510.040.03111.50- 13.500.75–––
4200.350.50.0350.0150.512.00 – 13.000.20.3–––
4300.1210.040.03116.00 – 18.000.75–––
JSL AUS0.087.08.00.070.030.7515.50 – 16.504.25 – 4.75––0.9 – 1.10
JS- 2030.089.2510.250.070.030.7514.25 – 15.252.25 – 2.75––1.60- 2.0
301M0.14.55.50.060.030.7514.50 – 15.506.0 – 7.0––1.70- 1.90
* Thickness of 1.27mm & below will have elongation of 20% min.111
MECHANICAL PROPERTIES61
Grade12Tensile Strength Mpa, (Min)12Yield Strength Mpa, (Min)12%Age Elongation in 50mm gauge length min12Hardness (Max)21
BHNRb
3015152054021795
3045152054020192
304L4851704020192
310S5152054021795
3165152054021795
316L4851704021795
3175152053521795
317L5152054021795
3215152054021795
3475152054020192
4093801702017988
409M4302752018790
410S4152052218389
4104502052021789
420700( max )–1521795
4304502052218389
JSL AUS5152054021795
JS- 2035152054021795
301M5152054021795
Stainless steel grades listed in the international standard ISO 15510:201071
TypeISO DesignationENUNSAISIJISGB
AX8NiCrAlTi32-211.4876N08800800NCF800
AX7NiCrAlTi33-211.4959N08810800HNCF800H
AX1NiCrMoCu25-20-51.4539N08904904LSUS890LS39042
AX12CrMnNiN17-7-51.4372S20100201SUS201S35350
AX12CrMnNiN18-9-51.4373S20200202SUS202S35450
AX2CrNiN18-71.4318S30153301LNSUS301LS30153
AX5CrNi17-71.4319S30100301SUS301S30110
AX10CrNi18-81.4310S30100301S30110
AX12CrNiSi18-9-31.4326()S30215302SiSUS302BS30240
AX9CrNi18-91.4325S30200302SUS302S30210
AX12CrNiCuS18-91.4667()[1.4570]303CuSUS303Cu
AX12CrNiSe18-91.4625()S30323303SeSUS303SeS30327
AX10CrNiS18-91.4305S30300303SUS303S30317
AX6CrNiCuS18-9-21.4570S30331303Cu+
AX3CrNiCu18-9-41.4567S30430SUSXM7S30488
AX6CrNiSiNCe19-101.4818S30415S30450
AX6CrNiCu17-8-21.4567SUS304J1S30480
AX2CrNiN18-91.4311S30453304LNSUS304LNS30453
AX2CrNiCu19-101.4650304LCuSUS304LS30403
AX7CrNi18-91.4948S30409304HS30409
AX6CrNiCu18-9-21.4567S30431304CuSUS304J3S30480
AX6CrNiCu19-9-11.4649()304CuSUS304CuS30488
AX5CrNiN19-91.4315S30451304NSUS304N1S30458
AX2CrNi19-111.4306S30403304LSUS304LS30403
AX2CrNi18-91.4307,[1.4306]S30403304LSUS304LS30403
AX5CrNi18-91.4301S30400304SUS304S30408
AX4CrNiMoN25-14-11.4496()SUS317J2
AX18CrNi23-131.4833S30908309SSUH309S30908
AX6CrNi23-131.4950S30908309SSUS309SS30908
AX8CrNi25-211.4845S31008310SSUS310SS31008
AX23CrNi25-211.4845S31008310SSUH310S31020
AX6CrNi25-201.4951S31008310SSUS310SS31008
AX1CrNiMoCuN20-18-71.4547S31254SUS312LS31252
AX6CrNiMoCu18-12-2-21.4665()SUS316J1
AX6CrNiMoTi17-12-21.4571S31635SUS316TiS31668
AX2CrNiMo17-12-31.4432S31603SUS316LS31603
AX2CrNiMoN17-12-31.4429S31653316LNSUS316LNS31653
AX2CrNiMoN17-11-21.4406S31653316LNSUS316LNS31653
AX6CrNiMoN17-12-31.4495()S31651316NSUS316NS31658
AX2CrNiMo18-14-31.4435S31603316LSUS316LS31603
AX2CrNiMo17-12-21.4404S31603316LSUS316LS31603
AX6CrNiMoS17-12-31.4494()S31620316FSUS316F
AX5CrNiMo17-12-21.4401S31600316SUS316S31608
AX3CrNiMo17-12-31.4436S31600316SUS316S31608
AX3CrNiMo18-16-51.4476()SUS317J1S31794
AX2CrNiMo19-14-41.4438S31703SUS317LS31703
AX6CrNiMo19-13-41.4445()S31700317SUS317S31708
AX2CrNiMoN18-12-41.4434S31753317LNSUS317LNS31753
AX7CrNiTi18-101.4940,1.4541S32109321HSUS321HS32169
AX6CrNiTi18-101.4541S32100321SUS321S32168
AX7CrNiNb18-101.4912S34709347HSUS347H
AX6CrNiNb18-101.4550S34700347SUS347S34778
AX3NiCr18-161.4389()S38400384SUS384S38408
A PHX6NiCrTiMoVB25-15-21.4980,1.4606S66286()660SUH660S51525
AFX2CrNiMoN25-7-31.4481()S31260SUS329J4LS22583
AFX2CrNiMoN22-5-31.4462S32205,S3F51,F60SUS329J3LS22053
AFX2CrNiN23-41.4362S32304S23043
AFX3CrNiMoCuN26-6-3-21.4507S32550S25554
AFX2CrNiMoCuWN25-7-41.4501S32760S27603
AFX6CrNiMo26-4-21.4480()S32900329SUS329J1
A:austeniticF:ferriticAF: austenitic-ferritic":'AISI like'common name() EN nb issued for ISO grade-C Chinese based composition-I genuine ISO composition
(1)The ISO name is composed of 4 parts structure XXXX-YYY-ZZ-T51-U USA based composition
XXXX is a remindr of the European coding, YYY a reminder of the old AISI codes, ZZ an ISO coding and T an additional information71

Supplier and Exporter of Stainless Steel Seamless Pipes in Countries Like

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FAQ

03

Specifying pipe and tube

What is the difference between nominal bore and outside diameter?
Nominal bore (NB) is a size label, not a measurement — a 2-inch NB pipe has an outside diameter of 60.3 mm, not 2 inches. Outside diameter is fixed for a given NB regardless of schedule, so fittings and flanges interchange. Giving OD and wall thickness in millimetres alongside the NB removes all ambiguity when ordering.
What does the pipe schedule mean?
Schedule is a wall-thickness series. Since outside diameter is fixed for a given nominal bore, a higher schedule means a thicker wall, a higher pressure rating and a smaller bore. Stainless is often supplied to the S series (5S, 10S, 40S) defined in ASME B36.19.
Seamless or welded — which do I need?
Seamless has no weld seam and is specified for high or cyclic pressure and elevated-temperature service. Welded is more economical and available in larger diameters, and is well suited to lower-pressure, structural and general service. Both are supplied in the same grades.

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