Stainless Steel Seamless Pipes

To meet the quality conscious requirements for our highly esteemed clients, we provide these SS Pipes in different sizes, grades and thickness as per customized requirements given by our clients.Our Cold Drawn Pipes are obtained from the reliable companies of the market. Our SS Seamless Pipes are produced through extrusion or rotary piercing.

Product Range

Outside Diameter 1/8" NB TO 12"NB
Walll Thickness SCH 5s, 10s, 40s, 80s, 160s, XS, XXS
Grade TP 304/L/H, TP 316/L/H/Ti, TP 317/L, TP 321/H, TP 347/H, TP 310S, S31803, S32205
Specification ASTM, ASME, DIN EN (GERMAN), NF (AFNOR), JIS (JAPAN)
  • Ability to supply pipes with stringent NDT testing, special chemistry, closer dimensional tolerance, higher corrosion resistance etc.
  • The Hot Extruded Mother Hollows are used for manufacturing Seamless Pipes
  • Supply condition
  • Solution Annealed & Passivated
  • Stabilization Heat Treatment for Stabilized Grades
  • Single OR Double Random Length

The mother hollow is then drawn with the help of Tungsten Carbide Die and Plug to get the desired diameter and thickness. It is then annealed, straightened, cut, deburred, pickled and passivated. The tubes then undergo a 100% hydro-testing, visual and dimensional examination, 100% PMI testing They are then marked and suitably packed before dispatch.

  • Oil & Gas
  • Nuclear Power Plants
  • Petrochemical
  • Refinery
  • Chemical & Fertilizer
  • Power Plant
  • Pipes for Engineering purpose
  • Construction

Specification Equivalents

STANDARD SPICIFICATION APPLICABLE TO
 ASTM / ASME A / SA 213 For Seamless Tubes mainly applicable to Heat Exchangers, Super Heater & Steel Boilers
A / SA 249 For Welded Tubes mainly applicable to Heat Exchangers, Boilers, Condenser, Super Heater, etc.
A / SA 268 For Seamless & Welded Tubes for General Services
A / SA 269 For Seamless & Welded Tubes for General Services
A / SA 312 For Seamless & Welded Pipes
A / SA 358 For Welded Pipes
A / SA 688 For Welded Water Heater & Heat Exchangers U-Tubes
A / SA 789 For Seamless & Welded Duplex Stainless Steel Tubes, Pipes & U-Tubes.
 GERMAN (EN) DIN 17456 For Seamless Tubes For General Services.
DIN 17457 For Welded Tubes For Specific OR Special Requirements.
DIN 10216-5 For Seamless Tubes For Specific OR Special Requirements.
DIN 10217-5 For Welded Tubes For Specific OR Special Requirements.
 NF NF A 49-117 For Seamless Ferritic & Austenitic Stainless Steel Tubes for General Services.
NF A 49-217 For Seamless Ferritic, Austenitic Stainless Steel Tubes For Heat Exchangers.
 JIS JIS G 3459 For Stainless Steel Pipes.
JIS G 3463 For Stainless Steel Boiler & Heat Exchanger Tubes.

Highlight of ASTM A-312 Seamless and Welded Pipes

Specifications

Allowable Outside Diameter Variations
in mm

Allowable Wall
Variations in %

Exact length Tolerances in mm

Testing

ASTMA-312
Seamless, Welded
& Heavily Cold worked Austenitic SS Pipes

Diameter
Over
Under
Over
Under
Over
Under
• Tension Test
• Flattening Test
• 100% Hydrostatic Test or NDT
• Refer to ASTM A- 999

1/8 to 21/2 incl.,
a II t/D ratios
3 to 18 incl.,
t/D up to 5 % incl.
3 to 18 incl.,
t/D> 5 %

0.40
0.80
1.60
0.80
0.80
0.80
20.0
22.5
15.0
12.5
12.5
12.5
6.35
6.35
6.35
0
0
0

Material Grades Equivalents

MATERIAL UNS GRADE ASTM / ASME GRADE (TP) EQUIVALENT GRADE ( DIN / EN )
AUSTENITIC S 30400 304 1.4301
S 30403 304 L 1.4306 / 1.4307
S 30409 304 H 1.4948
S 30400 / S 30403 304 / 304 L 1.4301 / 1.4306
S 31600 316 1.4401
S 31603 316 L 1.4404
S 31609 316 H 1.4919
S 31600 / S 31609 316 / 316 L 1.4401 / 1.4404
S 31635 316 Ti 1.4571
S 32100 321 1.4541
S 32109 321 H 1.4941
S 32100 / S 32109 321 / 321 H 1.4541 / 1.4941
FERRATIC/MARTENSITIC S 40500 405 1.4002
S 41000 410 1.4006
S 43000 430 1.4016
DUPLEX & Super Duplex S 31803 2205 1.4462
S 32750 2507 1.4410

Chemical Compensation in Detailed

Grade AISI Chemical Composition - Percent
C Max Mn Max P Max S Max Si Max Cr Ni Mo Other Element
304 0.08 2 0.045 0.03 0.75 18.00-20.00 8.00-11.00 - -
304L 0.035 2 0.045 0.03 0.75 18.00-20.00 8.00-13.00 - -
304H 0.04-0.10 2 0.045 0.03 0.75 18.00-20.00 8.00-11.00 - -
310 0.25 2 0.045 0.03 1.5 24.00-26.00 19.00-22.00 - -
310s 0.08 2 0.045 0.03 1.5 24.00-26.00 19.00-22.00 - -
316 0.08 2 0.045 0.03 0.75 16.00-18.00 11.00-14.00 2.00-3.00 -
316L 0.035 2 0.045 0.03 0.75 16.00-18.00 10.00-15.00 2.00-3.00 -
316H 0.04-0.10 2 0.045 0.03 0.75 16.00-18.00 11.00-14.00 2.00-3.00 -
316TI 0.08 2 0.045 0.03 1 16.00-18.00 10.00-14.00 2.00-2.50 Ti5*C.min
317 0.08 2 0.045 0.03 0.75 18.00-20.00 11.00-14.00 3.00-4.00 -
317L 0.035 2 0.045 0.03 0.75 18.00-20.00 11.00-15.00 3.00-4.00 -
321 0.08 2 0.045 0.03 0.75 17.00-19.00 9.00-13.00 - Ti5xC%
321H 0.04-0.10 2 0.045 0.03 0.75 17.00-19.00 9.00-13.00 - Ti5xC%
347 0.08 2 0.045 0.03 0.75 17.00-19.00 9.00-13.00 - Na+Ta10xC%
347H 0.04-0.10 2 0.045 0.03 0.75 17.00-19.00 9.00-13.00 - Na+Ta10xC%
410 0.15 1 0.04 0.03 1 11.50-13.50 0.75 - -
410S 0.08 1 0.04 0.03 1 11.50-13.50 0.6 - -
S31803 0.025 1 0.04 0.03 1 21.0-23.0 4.5-6.5 2.5-3.5 -
Nominal Pipe Size Nominal Outside Diameter Wall Thickness & Weight
Sch. 5S Sch. 10S Sch. 20S Sch. 40S Sch. 80S Sch. 160S
mm Inch mm Inch Wall Thick Weight Kg/Mtr. Wall Thick Weight Kg/Mtr. Wall Thick Weight Kg/Mtr. Wall Thick Weight Kg/Mtr. Wall Thick Weight Kg/Mtr. Wall Thick Weight Kg/Mtr.
6 1/8 10.3 0.405 1 0.23 1.24 0.28 1.5 0.33 1.73 0.37 2.41 0.47 - -
8 1/4 13.7 0.54 1.2 0.37 1.65 0.49 2 0.58 2.24 0.64 3.02 0.82 - -
10 3/8 17.2 0.675 1.2 0.47 1.65 0.63 2 0.74 2.31 0.87 3.2 1.12 - -
15 1/2 21.3 0.84 1.65 0.81 2.11 1.02 2.3 1.07 2.77 1.29 3.73 1.62 4.75 1.97
20 3/4 26.7 1.05 1.65 1.05 2.11 1.3 2.5 1.52 2.87 1.71 3.91 2.93 5.56 2.93
25 1 33.4 1.315 1.65 1.03 2.77 2.13 2.5 2 3.38 2.54 4.55 3.29 6.35 4.3
32 42.2 1.66 1.65 1.65 2.77 2.73 3 2.9 3.56 3.44 4.85 4.56 6.35 5.69
40 48.3 1.9 1.65 1.93 2.77 3.11 3 3.35 3.68 4.11 5.08 5.49 7.14 7.35
50 2 60.3 2.375 1.65 2.4 2.77 3.99 3.5 4.25 3.91 5.52 5.54 7.6 8.74 11.26
65 73.03 2.875 2.11 3.7 3.05 5.26 4 6.81 5.16 8.77 7.01 11.59 9.53 14.91
80 3 88.9 3.5 2.11 4.51 3.05 6.45 4 8.37 5.49 11.47 7.62 15.51 11.13 21.3
100 4 114.3 4.5 2.11 5.85 3.05 8.36 4.5 12.18 6.02 16.07 8.56 22.66 13.49 33.54
125 5 141.3 5.563 2.77 9.5 3.4 11.6 5 16.8 6.55 21.08 9.53 31 15.88 49.11
150 6 168.3 6.625 2.77 11.35 3.4 13.82 6.35 25.36 7.11 28.68 10.97 42.56 18.24 67.53
200 8 219.08 8.625 2.77 14.8 3.76 20 6.35 33.31 8.18 43.18 12.7 64.64 23.01 111.27
250 10 273.05 10.75 3.4 22.61 4.19 27.8 6.35 41.77 9.27 60.31 12.7 81.55 28.58 172.33
300 12 323.85 12.75 3.96 31.25 4.57 36 6.35 49.7 9.53 73.85 12.7 97.43 33.32 238.68
350 14 355.6 14 3.96 34.35 4.78 41.3 7.92 67.9 11.13 98.54 - - - -
400 16 406.4 16 4.19 41.6 4.78 47.34 7.92 77.82 12.07 123.3 - - - -
450 18 457.2 18 4.19 46.85 4.78 53.32 7.92 87.74 14.27 155.86 - - - -
500 20 508 20 4.78 59.31 5.54 68.64 9.53 117.14 15.09 183.42 - - - -
600 24 609.6 24 5.54 82.57 6.35 94.52 9.53 141.11 17.48 255.41 - - - -