SEAMLESS PIPES & TUBES



Nickel Alloy

RANGE
15 NB UP TO 1200 NB IN SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS
FORM
SEAMLESS / ERW / WELDED IN ROUND & SQUARE .

Nickel Alloy

ASTM / ASME SB 163 UNS 2200 ( NICKEL 200 )
ASTM / ASME SB 163 UNS 2201 (NICKEL 201 ),
ASTM / ASME SB 163 / 165 UNS 4400 (MONEL 400 )
ASTM / ASME SB 464 UNS 8020 ( ALLOY 20 / 20 CB 3 ),
ASTM / ASME SB 704/705 UNS 8825 INCONEL (825)
ASTM / ASME SB 167 / 517 UNS 6600 (INCONEL 600 )
ASTM / ASME SB 167 UNS 6601 ( INCONEL 601 ), 
ASTM / ASME SB 704 /705 UNS 6625 (INCONEL 625) 
ASTM / ASME SB 619/622/626 UNS 10276 ( HASTELLOY C 276 )

Stainless Steel

RANGE
15 NB UP TO 1200 NB IN SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS
FORM
SEAMLESS / ERW / WELDED IN ROUND & SQUARE .

Stainless Steel

ASTM / ASME SA 312 GR. TP 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316TI , 316H , 316 LN , 317 , 317L , 321 , 321H , 347 , 347 H , 904L .
ASTM / ASME SA 358 CL 1 & CL 3 GR . 304 , 304L , 304H, 309S ,309H , 310S, 310H , 316 , 316H , 321 , 321H , 347 .

Seamless Stainless Steel Pipes & Tubes
Introduction 
and Scope

This covers straight cold drawn seamless ferritic, austenitic alloy steel, boiler, superheater and heat exchanger tubes.
Materials
 Material is ordered to comply with the requirements of ASTMA – 213 in grades 304, 304L, 304H, 316, 316L, 321, 347, 410 & 430 grades regularly. Special grades can be made as per customer’s requirements.
Size Range
 OD: 6.35 mm to 101.60 mm
Thickness: As per customer specifications
Length: As per customer specifications
Process Of Manufacture

The tube is manufactured from selected mother hollow pipes of required size and grade. These are manufactured by cold drawing process. All tubes are then annealed to a minimum temperature of 10500C, straightened, pickled and passivated, end finished and 100% tested in accordance with ASTM A 450.
Tolerances
OD Size Range Over MM Under MM
Under 25.4 0.10 0.10
25.4 to 38.1 Incl. 0.15 0.15
38.1 to 50.8 excl 0.20 0.20
50.8 to 63.5 excl 0.23 0.23
63.5 to 76.2 excl 0.30 0.30
76.2 to 101.6 excl 0.38 0.38
Test

Normal: Tensile strength , Yield strength, Elongation Flattening, Hydrostatic Pressure test

Optional: Pneumatic / Air leakage, Eddy Current , IG Corrosion

Marking
 All pipes are marked as folows:
ASTM A-213, Garde, OD, Thickness, Heat No.
Standard Weight Chart for Seamless Stainless Steel Pipes & Tubes
Sl no. Outside Dia Wall Thickness (in mm)
  Inch MM 0.5 0.6 0.7 0.8 0.9 1 1.2 1.5 1.6 2 2.5 3
1 1/4" 06.35 0.073 0.087 0.099 0.111 0.122 0.133 0.154          
2 3/8" 09.52 0.113 0.134 0.155 0.175 0.194 0.212 0.250          
3   10.00 0.119 0.141 0.163 0.184 0.205 0.225 0.262          
4 1/2" 12.70 0.153 0.182 0.210 0.238 0.266 0.293 0.345          
5 5/8" 15.87 0.192 0.229 0.265 0.302 0.337 0.372 0.441 0.540        
6 3/4" 19.05 0.232 0.277 0.321 0.365 0.409 0.452 0.536 0.659        

*We also Manufacture Seamless Pipes from ½” to 4” NB SCH 5, SCH 10S, SCH 10, SCH 40S.

Due to variations between different specifications comparisons made exactly, physical, chemical and mechanical values are also typical and should not be taken as being accurate.