SS Welded 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 .


S.S. Welded Pipes & Tubes
Introduction  and Scope

This cover electric - fusion welded austenitic Chromium-nickel stainless steel pipe suitable for corrosive or high temperature service, both. Five classes of pipe are covered under this specification:

Class 1: Double side welded using filler material and 100% radio graphed.
Class 2: Double side welded using filler material. No radiography required.
Class 3: Single side welding using filler material and 100% radio graphed. 
Class 4: As class 3, expert root pass may be made without filler.
Class 5: Double side welded using filler material and spot radio graphed.

Materials
This specification covers 19 grades of material steel. The plate material comply with the requirements of ASTM A - 240. Most commonly manufactured grades are 304, 304L, 304H, 316, 316L 310.
Size Range
OD: 8" NB (219.08 mm) to 36"NB (914.04 mm)
Thickness: NB Size in Schedule 5, 10, 10s, 40, 40s
Length: As per customer specification.
Process Of Manufacture
The pipes are manufacutred from levelled plates which are edge bevelled and progessively "O" formed on hydraulic presses. The edges of the pipe are either manually TIG welded or continuously welded on Track and Boom. Weld portion is radiographed as per requirements. Annealing of pipe is carried out on continuous furnace. Pipe is further straightened, sized, end finished, pressure tested, pickled and passivated, marked and packed.
Tolerances
OD: +/- 0.5% of specified diameter based on circumferential measurement.

Thickness: Minimum thickness at any point not more than 0.3 mm under nominal Thick.

Out of roundness: Difference between maximum & minimum OD%
Straightness: 3 mm in 3 mtrs.
Length: As per customeer specification.

Test
Transverse bend weld tests.
Transverse tension test to ASME code IX para QW 150.
Hydrostatic Test ASTM A-530.
Radiographic classes1,3,4 to ASME Code VIII para UW 51, 
Class 5 to ASME.
Sec. VIII para UW 52.
Marking
All pipes are marked as folows:
ASTM A-358, Class, Grade, Size , Schedule No., Heat No.

 

Standard Weight Chart for S.S. Welding pipe & Tubes

Sl no.

Outside Dia
Wall Thickness (in mm)
  SCH 5 SCH10S SCH10 SCH 40S
  Inch MM Thick Kg/mtr Thick Kg/mtr Thick Kg/mtr Thick Kg/mtr
1 8" 219.08 2.77 14.99 3.76 20.25 3.76 20.25 8.18 43.16
2 10" 273.05 3.4 22.97 4.19 28.2 4.19 28.2 9.27 61.2
3 12" 323.85 3.96 31.72 4.57 36.53 4.57 36.53 9.53 74.92
4 14" 355.60 3.96 34.87 4.78 41.97 6.35 54.77 9.53 82.55
5 16" 406.40 4.19 42.18 4.78 48.05 6.35 62.74 9.53 94.66
6 18" 457.25 4.19 47.15 4.78 54.12 6.35 70.71 9.53 106.78
7 20" 508.00 4.77 60.13 5.54 69.67 6.35 78.68 9.53 118.9

* We also Manufacture Seamless Pipes from ?” 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.

 

 

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