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Stainless Steel Pipes

Trident Enterprises are among the pre-eminent organizations, involved in manufacturers, suppliers, stockists and exporter Stainless Steel Pipes. Available in different lengths, thicknesses and sizes, these Stainless Steel Pipes are widely demanded by various industries like food & beverage, chemical, petrochemical, pharmaceutical and cosmetics. In addition to this, we provide tailor-made solution for all our offered Stainless Steel pipes as per customers’ requirements.

 

What is Stainless Steel?

In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is a steel alloy with a minimum of 10.5% chromium content by mass.Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high-salinity, or poor air-circulation environments.There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required.

Stainless steel differs from carbon steel by the amount of chromium present. Unprotected carbon steel rusts readily when exposed to air and moisture. This iron oxide film (the rust) is active and accelerates corrosion by forming more iron oxide; and, because of the greater volume of the iron oxide, this tends to flake and fall away. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion by blocking oxygen diffusion to the steel surface and blocks corrosion from spreading into the metal's internal structure.Due to the similar size of the steel and oxide ions, they bond very strongly and remain attached to the surface

Specification

Type Seamless Pipe, ERW Pipe, EFW Pipe, Coated Pipe
Standard ASTM A-312, A-790, API 5LC, A-554, A-778, A-790 ASTM A312, ASTM A358, ASTM A813, ASTM A814, ANSI B36.19, AWS A5.9, SAE J1086, PA 15096-0001, A262 , A370, A941, A999/A999M, A1016/A1016M, E112, E381, E527, ASTM A-269, A-268, A-213, A-789, ASTM A-312, A-790, B677 Equivalent to ASME, EN, JIS Etc
Grade TP-304, 304L, 304H, 304LN, 304N, TP-310, 310S, TP-316, 316L, 316N, 316LM, 316H, 316N, 36Ti, TP317, 317L, TP-317LM, TP-321, 321/H, TP-347, 347/H, 410, TP405, T 446, 904L, S31260, S31500, S31803, S32550, S32750, S32760, TP309Cb, TP310Cb and TP348 etc.
ICS Code ICS Number Code 23.040.10 (Iron and steel pipes)
UNSPSC Code UNSPSC Code 40171621(Industrial welded stainless steel pipe); 40171622(Industrial seamless stainless steel pipe)
Quality Assurance

They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Value Added Services
  • Stainless Steel Pipe Polishing
  • Stainless Steel Pipe Beveling
  • Stainless Steel Pipe Honing & Turning
  • Heatreating & Annealing
  • Positive Material Identification (PMI)
Test Certificates Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report
Keywords Austenitic Stainless Steel - Cold Working - Corrosive Service Applications - Forming - High-Temperature Service Applications - High-Temperature Services - Seamless Pipes And Tubes - Seamless Steel Pipes - Stainless Steel Pipes - Tubular Products - EFW Pipes And Tubes - Welded Steel Pipes

 

Chemical Composition

S.S. 301 303 304 304L 309 309s 310s 316 316L 321 347
Carbon 0.15 0.15 0.08 0.03 0.20 0.08 0.08 0.08 0.03 0.08 0.08
Manganese 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00
Silicone 1.00 1.00 1.00 1.00 1.00 1.00 1.5 1.00 1.00 1.00 1.00
Chromium 16/18 17/19 18/20 18/02 22/24 22/24 24/26 23/26 16/18 17/19 17/19
Nickel 6.0/8.0 8.0/10 8.0/12 8.0/12 12/15 12/15 19/22 10/14 10/14 9.0/12 9/13
Molybdenum               2.0/3.0 2.0/3.0    
Phosphorus 0.045 0.20 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045
Nitrogen                      
Suiphur 0.03 0.15MIN 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03
Selenium                      
Aluminium                      
Titanium                   5XC  
Cb+Ta                     10XC
Tensile
Strength
110 90 85 60 90 90 95 85 78 87 92
2% Yield
Strength
40 35 35 30 40 40 40 35 30 35 35
Elongation
in 2'
60 50 55 55 45 45 45 55 55 55 50
Rockwell 85 84 80 76 85 85 87 80 76 80 84
Brinell 165 160 150 140 165 165 170 150 145 150 160
                       
    En58E           En58J&H   En58C  
  X12
CrNi17.7
  X5
CrNi18.9
X5
CrNi18.8
      x5
CrNiMo18.12
X2
CrNiMo19.1
   
  AUST. AUST. AUST. AUST. AUST. AUST. AUST. AUST. AUST. AUST. AUST.

 

Chemical Composition AISI Wrought Stainless Steel

Physical corrosion resistance & other properties of important S.S.Grades
S.S.Grade
301 303 304 304L 309 309S 310S 316 316L 321 347
Density
8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0
Sp.Elec. Resist 20C micro
72 72 72 72 78 78 78 74 74 72 73
Sp. Heat (0-100c)
0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Ther. Conductivity
16.3 16.3 16.3 16.3 14.2 14.2 14.2 16.3 16.3 16.3 16.3
  17.0 17.2 17.3 17.3 15.0 15.0 15.9 15.9 15.9 16.6 16.6
Mild water
X X X X X X X X X X X
Industrial
X X X X X X X X X X X
Marine
X X X X X X X X X X X
Salt Water
            X X      
Mild
X X X X X X X X X X X
Oxidising
X X X X X X X X X X X
Reducing
              X X    
Abrasion Resistance
Good Good Good Good Good Good Good Good Good Good Good
Cold Forming
Good Excel Excel Good Good Good Good Good Good Good Good
Weldability
Excel Excel Excel Excel Good Excel Excel Excel Excel Excel Excel
Melting Flange
  1400 1450 1370 1400
Scaling Temp
800 900 900 900 1100 1100 1100 900 900 900 900

 

300 Series Austinetic Physical Properties

Type UNS Tensile 
(ksi) min
Yield 
(ksi) min
Elongation 
min
Hardness 
(Brinell) max
Hardness
(Rockwell B) max
302 S30200 75 30 40% in 2" 183 88
304* S30400 75 30 40% in 2" 183 88
304L* S30403 70 30 40% in 2" 183 88
309 S30900 75 30 40% in 2" 217 95

309S S30908 75 30 40% in 2" 217 95
310 S31000 75 30 40% in 2" 217 95
310S S31008 75 30 40% in 2" 217 95
316* S31600 75 30 40% in 2" 217 95

316L* S31603 70 25 35% in 2" 217 95
317 S31700 75 30 35% in 2" 217 95
317L S31703 75 30 35% in 2" 217 95
321 S32100 75 30 40% in 2" 183 88

347 S34700 75 30 40% in 2" 183 88

 

400 Series Martensitic Physical Properties

Type UNS Tensile 
(ksi) min
Yield 
(ksi) min
Elongation 
min
Hardness 
(Brinell) max
Hardness
(Rockwell B) max
410* S41000 65 30 20% in 2" 217 95
410S S41008 60 30 22% in 2" 183 88
416 S41600 75 40 30-25% in 2"  - 82
420 S42000 95 60 30-25% in 2"  - 92

430 S43000 65 30 22% in 2" 183 88
440C S44004  -  -

 

Mechanical Properties

Type
Temper
Tensile
Strength
ksi
Yield
Strength
ksi
Minimum
Elongation in 
2" (%)
Rockwell (1)
Hardness
304
304L
Annealed
Half Hard
Full Hard
100 max.
110-140
140 min.
25-45
70-110
110 min.
35
15
7
B 90 max.
B 93-C 30
C 22 min.
310 Annealed
Half Hard
Full Hard
100 max.
115-135
140 min.
35-55
75-115
115 min.
35
15
5
B 95 max.
B 95-C 26
C 24 min.
316
316L
Annealed
Half Hard
Full Hard
100 max.
110-140
140 min.
30-50
70-110
110 min.
35
15
6
B 95 max.
B 95-C 26
C 24 min.
321 Annealed
Half Hard
Full Hard
100 max.
110-140
140 min.
35-55
80-120
120 min.
35
15
6
B 92 max.
B 95-C 26
C 24 min.
347 Annealed
Half Hard
Full Hard
100 max.
110-140
140 min.
35-55
80-120
120 min.
35
15
6
B 92 max.
B 95-C 26
C 24 min.
403
410
Annealed
Half Hard
Full Hard
85 max.
85-100
100 min.
30-50
65-85
85 min.
35
15
5
B 95 max.
B 90-B 100
C 96 min.
430 Annealed
Half Hard
Full Hard
85 max.
82-97
98 min.
35-50
60-90
85 min.
35
15
5
B 90 max.
B 85-98
C 93 min.
446 Annealed
Half Hard
Full Hard
95 max.
95-115
115 min.
40-75
70-90
85 min.
35
15
4
B 95 max.
B 90-C 24
B 96 min.
A-286 Annealed
Half Hard
Full Hard
1010 max.
115-140
140 min.
35-65
80-110
110 min.
35
15
3
B 95 max.
B 96-C 26
C 26 min.

 

Stainless Steel Pipe Tolerances

NPS Designator Permissible Variations in Outside Diameter
Over In. Under In.
1/8 to 1-1/2, incl 1/64 (0.015) 1/32 (0.031)
Over 1-1/2 to 4, incl 1/32 (0.031) 1/32 (0.031)
Over 4 to 8, incl 1/16 (0.062) 1/32 (0.031)
Over 8 to 18, incl 3/23 (0.093) 1/32 (0.031)