+91-22-67521137
Vishal Steel India
Contact Person

Gautam Mehta

+91-22-23898841

Factory Address:

Plot No. 749/77/5, G.I.D.C. Estate, Makarpura, Vadodara -390010.

Stainless Steel Backing Flange

ISO 9624 Ductile Iron Backup Flange and 316 Stainless Steel Backing Rings manufacturer in India


Stainless Steel Backing Flange
Table Of Content:


Stainless Steel Backing Flange Specification


Specification Stainless Steel Backing Flange
Production Technique Forged/ Heat treated and machined
Manufacturer of Forged/ Threaded/ Screwed / Plate
Manufacturer Pressure Class Class 150 (lb) up to 24"
Class 300 (lb) up to 20"
Class 600 (lb) up to 20"
Class 900 (lb) up to 16"
Class 1500 (lb) up to 10"
Class 2500 (lb) up to 8"
Flange Test Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flange Equipment Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Coating Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized
Schedule SCH 5S, SCH 10, SCH 40, SCH 80, SCH 120, SCH 160, SCH 180 To XXS
Dimensions And Standard EN 1092-1/ EN 1092-2/ API
Manufacturer Length NPS 1⁄₂" To NPS 48”
Face Type RTJ/ FF/ RF/ lap joint/ Male & Female / Tongue & Groove.
Forging Methods Casting/ Forging/ Rolling/ Cutting
EN Standard 6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar
DIN Standard PN6/ PN10/ PN16/ PN25/ PN40/ PN64
JIS Standard 5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K
UNI Standard 6 Bar/ 10 Bar/ 16 Bar/ 25 Bar/ 40 Bar
Supporting Material Gasket/ Ring Joint/ Flange Bolts
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Application Bitumen upgraders
Heavy oil refineries.
Nuclear power (mostly seamless).
Petrochemicals and acids.

Types Of Stainless Steel Backing Flange


Stainless Steel 304 Backing Flange

Stainless Steel 304 Backing Flange

SS 304L Backing Flange

SS 304L Backing Flange

Stainless Steel 316 Backing Flange

Stainless Steel 316 Backing Flange

Stainless 316L Backing Flange

Stainless 316L Backing Flange

Steel 317 Backing Flange

Steel 317 Backing Flange

Stainless Steel 321 Backing Flange

Stainless Steel 321 Backing Flange

SS 347 Backing Flange

SS 347 Backing Flange

904L SS Backing Flange

904L SS Backing Flange

Stainless Steel 410 Backing Flange

Stainless Steel 410 Backing Flange

Stainless Steel Backing Flanges

Stainless Steel Backing Flanges

Stainless Steel Backing Ring

Stainless Steel Backing Ring

Stainless Steel Backing Ring Flange

Stainless Steel Backing Ring Flange

Stainless Steel Back Up Flanges

Stainless Steel Back Up Flanges

Stainless Steel Stub Flange And Backing Ring

Stainless Steel Stub Flange And Backing Ring

Steel Backing Flanges

Steel Backing Flanges


Types Of Ductile Iron Backup Flange


Ductile Iron Backup Flange

Ductile Iron Backup Flange

Iron Backup Flange

Iron Backup Flange

ISO 9624 Flange

ISO 9624 Flange

ISO 9624 Loose Backing Flange

ISO 9624 Loose Backing Flange

Backing Flanges

Backing Flanges

Backup Flange

Backup Flange

Flange Adapters

Flange Adapters

Split Backing Flange

Split Backing Flange

Flange Iso 7005-1

Flange Iso 7005-1

ISO 7005-1 Plate Flange

ISO 7005-1 Plate Flange

Di Backing Flange

Di Backing Flange

Split Backing Flange

Split Backing Flange

Galvanized Backing Flange

Galvanized Backing Flange

Backing Flange And Stub End

Backing Flange And Stub End

Loose Backing Flange

Loose Backing Flange

Backing Ring Flange

Backing Ring Flange

Galvanised Steel Plate Backing Ring

Galvanised Steel Plate Backing Ring

Slip On Backing Flange

Slip On Backing Flange

Back up Flange

Back up Flange

Nominal Bore Backing Flanges

Nominal Bore Backing Flanges

Ductile Backing Ring

Ductile Backing Ring


Types Of Carbon Steel Backing Flanges


Carbon Steel Backing Flanges

Carbon Steel Backing Flanges

CS Backing Flanges

CS Backing Flanges

Carbon Steel Backing Ring

Carbon Steel Backing Ring

ASTM A105 Backing Flange

ASTM A105 Backing Flange

ASTM A350 LF1 Backing Flanges

ASTM A350 LF1 Backing Flanges

ASTM A350 LF2 Backing Flanges

ASTM A350 LF2 Backing Flanges

ASTM A350 LF3 Backing Rings

ASTM A350 LF3 Backing Rings

ASTM A350 LF6 Backing Rings

ASTM A350 LF6 Backing Rings

ASTM A350 LF 787 Backing Ring

ASTM A350 LF 787 Backing Ring

ASTM A694 F42 Backing Flanges

ASTM A694 F42 Backing Flanges

ASTM A694 F46 Backing Rings

ASTM A694 F46 Backing Rings

ASTM A694 F50 Backing Ring Flanges

ASTM A694 F50 Backing Ring Flanges

ASTM A694 F52 Back Up Flanges

ASTM A694 F52 Back Up Flanges

ASTM A694 F60 Stub Flange And Backing Ring

ASTM A694 F60 Stub Flange And Backing Ring

ASTM A694 F70 Backing Flanges

ASTM A694 F70 Backing Flanges


Buy Carbon Steel Backing Flanges and ISO 7005-1 Plate Flange at competitive price directly from manufacturers


Stainless Steel Backing Flange Price List


Size In Inch Material Surface Treatment Price In INR (India) Per Piece
3" Alloy Steel Polished 675.00
6" Stainless Steel Polished 1684.00
8" Ductile Iron Polished 2129.00
10" Carbon Steel Polished 2568.00
12" Carbon Steel Polished 2978.00

PN16 Backing Flange Dimensions


PN16 Backing Flange Dimensions

ANSI 150 Backing Flange Dimensions


ANSI 150 Backing Flange Dimensions

NPS In (Millimeter) A (Millimeter) B (Millimeter) C (Millimeter) P (Millimeter) Number of holes Diameter Of Hole (Millimeter)
20 90 8 28 61 4 16
25 100 8 34 70 4 16
32 110 9 42 79 4 16
40 118 8 51 90 4 16
50 129 8 63 99 4 16
63 154 10 78 121 4 19
90 192 11 110 153 4 19
110 230 11 133 190 8 19

Stainless Steel Backing Flange Dimensions


Stainless Steel Backing Flange Dimensions

NPS OD
(Outside Diameter)		 ID
(Inside Diameter)		 T
(Thickness)		 BC
(Bolt Circle)		 Holes Diameter Number of Bolt Holes 45 Degree Bevel
(B)		 Weight Each
(lbs)
2 6.000 2.440 0.500 4.75 0.750 4 0.250 3.1
3 7.500 3.570 0.500 6.00 0.750 4 0.250 4.6
4 9.000 4.570 0.500 7.50 0.750 8 0.250 6.2
6 11.000 6.720 0.500 9.50 0.875 8 0.250 7.8
8 13.500 8.720 0.500 11.75 0.875 8 0.250 11.2
10 16.000 10.880 0.500 14.25 1.000 12 0.250 14.0
12 19.000 12.880 0.500 17.00 1.000 12 0.250 20.4

Exporter of Split Backing Flange and ISO 9624 Flange with Final visual inspection


Types Of Split Backing Flange


Class 150 – Squared Split Flanges

Class 150 – Squared Split Flanges

Class 150 – Round Split Flanges

Class 150 – Round Split Flanges

Class 300 – Round Split Flanges

Class 300 – Round Split Flanges


Split Backing Flange Value Added Services

  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Hardness Test
  • Chemical Equipment
  • Pitting Resistance Test
  • Positive Material Identification – PMI Testing
  • Micro and MacroTest
  • Flattening Test
  • Mechanical Testing Such as Tensile of Area

Class 150 Split Backing Flange Dimensions


Class 150 Split Backing Flange Dimensions

Class 300 Split Backing Flange Dimensions


Class 300 Split Backing Flange Dimensions

Pressure-Temperature Ratings Of Split Backing Flange


Pressure-Temperature Ratings Of Split Backing Flange

Dimensions Of Galvanized Backing Ring Flanges


Dimensions Of Galvanized Backing Ring Flanges

NPS Overall Internal PCD Thickness Thickness Hole Number of Weight In Kilogram
NB Diameter Diameter (WT) (WT) Diameter Holes Weight In KG
Flanges Standard 86037
(Millimeter) (Millimeter) (Millimeter) (Kg)
20 / 25 102 33 73 6 16 14 4 0.67
25 / 30 114 40 83 7 16 14 4 0.85
32 / 38 121 48 87 8 16 14 4 0.90
40 / 44.5 133 54.5 98 9 16 14 4 1.13
50 / 57 152 69 114 10 16 17.5 4 1.44
65 / 76 165 88 127 10 16 17.5 4 1.51
80 / 89 184 101 146 11 18 17.5 4 1.97
100 / 108 216 120 178 13 18 17.5 8 2.54
125 / 133 254 145.5 210 13 18 17.5 8 2.58
150 /159 279 171.5 235 17 18 22 8 4.39
200 / 219 337 232 292 19 20 22 8 7.39
250 / 267 406 280 356 22 22 22 12 11.57
300 /324 457 341 406 25 24 26 12 14.37

Backing Flange Size Chart


NPS Flange Inner Diameter
in Millimeter
1/2" 25.0
3/4" 28.2
1" 35.1
1 1/4" 43.7
1 1/2" 50.0
2" 62.5
2 1/2" 75.4
3" 91.4
4" 116.8
5" 144.5
6" 171.5
8" 222.3
10" 277.4
12" 328.2
14" 360.2
16" 411.2
18" 462.3
20" 514.4
24" 616.0

Carbon Steel Backing Flanges Dimensions


Carbon Steel Backing Flanges Dimensions

Ductile Iron Backup Flange Dimensions


Ductile Iron Backup Flange Dimensions

Manufacturing Process Of ISO 9624 Backing Rings


Manufacturing Process Of ISO 9624 Backing Rings

ISO 7005-1 Flange Dimensions


ISO 7005-1 Flange Dimensions
T D1 C B Hole F G
7,6 34 27 4,4 / M4 6 21,5 18,3
12,7 70 58,7 6,7 / M6 6 48,35 41,9
15.8 85,6 72,4 8,4 / M8 8 61,8 55,6
17,5 113,5 92,1 8,4 / M8 8 82,55 77,2
19,9 151,6 130,3 8,4 / M8 16 120,7 115,3
22,3 202,4 181 8,4 / M8 20 171,5 166,1
24,6 253,2 231,8 8,4 / M8 24 222,35 216,9
26 306 284 8,4 / M8 32 273,2 267
28,4 355,6 325,4 10,5 / M10 30 313,5 307,3
28,5 419,1 388,9 10,5 / M10 36 376,9 370,7

Blank: (B)
Blank Double - Sided (BD)
(Blank Double - Sided Tapped) BDT
Blank Rotatable Tapped (BRT)
Fixed (F)
Half Tapped (HT)
Mitred (M)
Rotatable (R)
Rotatable Tapped (RT)
Tapped (T)

ISO 9624 Flange Documentation

  • Raw Material Test Reports
  • Fumigation Certificates
  • Fumigation Certificates
  • Guarantee Letter
  • QAP (Quality Assurance Plan)
  • NABL approved Laboratory Test Reports
  • Heat Treatment Charts
  • Commercial Invoice which includes HS Code

Manufacturer of Backing Flanges and Flange Adapters Material in serrated, smooth, and stock finish for a high quality seal

Backing Flange Dimensions


Backing Flange Dimensions

Dimensions Of Backing Flange

Backing Flange Dimensions

Backing Flanges Dimensions

Backing Flanges Dimensions

Flange Backing Ring Purpose


Flange Backing Ring Purpose

Backing Ring For Stub Flange


Backing Ring For Stub Flange

Table D Backing Rings Dimensions


Table D Backing Rings Dimensions

Table E Backing Rings Dimensions


Table E Backing Rings Dimensions

Stub Flange Backing Ring Dimensions


Stub Flange Backing Ring Dimensions

Backing Flange And Stub End


Backing Flange And Stub End

Back Up Flange Vs Lap Joint Flange


Back Up Flange Vs Lap Joint Flange

Backing Flange Weight


Size Of Tube Drilling Outer Diameter Number Holes Diameter Of Hole P.C.D Wall Thickness 45° Chamfer Weight In KG
Table "D" 95.3 4 12.7 66.7 10 3 0.5
18 mm Table "E" 95.3 4 12.7 66.7 10 3 0.5
o/d tube PN10 95 4 14 65 10 3 0.5
PN16 95 4 14 65 10 3 0.5
ASA 150 (Class) 88.9 4 15.7 60.5 10 3 0.5
Table "D" 101.6 4 12.7 73 10 3 0.6
23 mm Table "E" 101.6 4 12.7 73 10 3 0.6
o/d tube PN10 105 4 14 75 10 3 0.61
PN16 105 4 14 75 10 3 0.61
ASA 150 (Class) 98.4 4 15.7 69.8 10 3 0.6

Ductile Iron Backup Flange Gasket Dimensions


Ductile Iron Backup Flange Gasket Dimensions
(Normal Size Of Steel Pipes) In Inch (I.D.) Inner Daimeter Gasket
 (O.D.) Outer Daimeter Gasket
Class 150#/ LB Class 300#/ LB Class 400#/ LB Class 600#/ LB Class 900#/ LB
1/2 0.84 1.875 2.125 2.125 2.125 2.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1 1.31 2.625 2.875 2.875 2.875 3.125
1 1/4 1.66 3 3.25 3.25 3.25 3.50
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3 3.50 5.375 5.875 5.875 5.875 6.625
4 4.50 6.875 7.125 7.00 7.625 8.125
5 5.56 7.75 8.50 8.375 9.50 9.75
6 6.62 8.75 9.875 9.75 10.50 11.375
8 8.62 11 12.125 12.00 12.625 14.125
10 10.75 13.375 14.25 14.125 15.75 17.125
12 12.75 16.125 16.625 16.50 18.00 19.625

Carbon Steel Backing Flanges Thickness Tolerance


Normal Size Of Steel Pipe Outer Diameter (O.D.) 10 Schedule 20 Schedule 30 Schedule STD Wall 40 Schedule 60 Schedule EXT Hvy 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 Schedule XX Hvy
½ 0.84 0.083 ... ... 0.109 0.109 ... 0.147 0.147 ... ... ... 0.188 0.294
¾ 1.05 0.083 ... ... 0.113 0.113 ... 0.154 0.154 ... ... ... 0.219 0.308
1 1.315 0.109 ... ... 0.133 0.133 ... 0.179 0.179 ... ... ... 0.25 0.358
1 ¼ 1.66 0.109 ... ... 0.14 0.14 ... 0.191 0.191 ... ... ... 0.25 0.382
1 ½ 1.9 0.109 ... ... 0.145 0.145 ... 0.2 0.2 ... ... ... 0.281 0.4
2 2.375 0.109 ... ... 0.154 0.154 ... 0.218 0.218 ... ... ... 0.344 0.436
2 ½ 2.875 0.12 ... ... 0.203 0.203 ... 0.276 0.276 ... ... ... 0.375 0.552
3 3.5 0.12 - - 0.216 0.216 - 0.3 0.3 - - - 0.438 0.6
3 ½ 4 0.12 - - 0.226 0.226 - 0.318 0.318 - - - - 0.636
4 4.5 0.12 - - 0.237 0.237 - 0.337 0.337 - 0.438 - 0.531 0.674
5 5.563 0.134 - - 0.258 0.258 - 0.375 0.375 - 0.5 - 0.625 0.75
6 6.625 0.134 - - 0.28 0.28 - 0.432 0.432 - 0.562 - 0.719 0.864
8 8.625 0.148 0.25 0.277 0.322 0.322 0.406 0.5 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.165 0.25 0.307 0.365 0.365 0.5 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.18 0.25 0.33 0.375 0.406 0.562 0.5 0.688 0.844 1 1.125 1.312 1
14 14 0.25 0.312 0.375 0.375 0.438 0.594 0.5 0.75 0.938 1.094 1.25 1.406 -
16 16 0.25 0.312 0.375 0.375 0.5 0.656 0.5 0.844 1.031 1.219 1.438 1.594 -
18 18 0.25 0.312 0.438 0.375 0.562 0.75 0.5 0.938 1.156 1.375 1.562 1.781 -
20 20 0.25 0.375 0.5 0.375 0.594 0.812 0.5 1.031 1.281 1.5 1.75 1.969 -
22 22 0.25 - - 0.375 - - 0.5 - - - - - -
24 24 0.25 0.375 0.562 0.375 0.688 0.969 0.5 1.219 1.531 1.812 2.062 2.344 -
26 26 - - - 0.375 - - 0.5 - - - - - -
30 30 0.312 0.5 0.625 0.375 - - 0.5 - - - - - -

ISO 9624 Loose Backing Flange Bolt Size


ISO 9624 Loose Backing Flange Bolt Size

Manufacturer of Stainless Steel Backing Flange and Split Backing Flange in RTJ, Tongue, RJ, Female, Raised, Groove, Male, Flat face

Facing Types Of Split Backing Flange


Facing Types Of Split Backing Flange

  • Type A: Flat Face (FF)
  • Type B: Raised Face (RF)
  • Type C: Tongue Face (TF)
  • Type D: Grooved Face (GF)
  • 1Type E: Spigo
  • Type F: Recess
  • Type G: Ring Recess
  • Type H: O-Ring Groove

Backing Flange Standard


American Standard Backing Flange
Code Of Standard Name Of Standard
ASME SA-182 Stainless Steel Backing Flange
ASME And ANSI B16.5 ISO 9624 Loose Backing Flange
ASME – B 16.36 Carbon Steel Backing Flanges
German Standard Backup Flange
DIN 2573/ DIN 2576 Backing (Flat Flange for Welding)
DIN 2673 Rings for Welding (Backing Flanges and Plain Collars)
PN10/ DIN PN 10/ PN16 PN20/ PN25/ PN40/ PN50
Japanese Standard Split Backing Flange
JIS B2220 JIS 5K, 10K, 30K, 40K,
British Standard Backing Flanges
BS 10 Table D/ Table E BS 10 Table F/ Table H

Global Client Reference list & delivery schedule of Stainless Steel Backing Flanges


Location Days Clients
India 7
  • Indian oil corporation, India
  • L&T India
  • Essar India
  • BHEL India
  • NTPC India
  • WIPRO India
Malaysia 15
  • Saag Oil & Gas Sdn Bhd (Malaysia), Block C1, Petaling Jaya, Malaysia, 19-5, 47301 Petaling Jaya, Selangor, Malaysia
  • Malaysian Oil & Gas Services Council, Malaysia, Persiaran Petronas, Kuala Lumpur City Centre, 50088 Kuala Lumpur, Malaysia
  • Synergy Oil & Gas Engineering Sdn Bhd, Malaysia, B-07-02, Skypark @, Jalan USJ 25/1, One City, 47600 Subang Jaya, Selangor, Malaysia
  • Hablem Oil & Gas (M) Sdn Bhd, Malaysia, Lot K-7162 (Ground Floor), Bandar Seri Kerteh, 24300 Kerteh, Terengganu, Malaysia
United Arab Emirates (UAE) 15
  • Hexa Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
  • Al Masaood Oil & Gas, UAE, Abu Dhabi - United Arab Emirates (UAE)
Dubai 15
  • SPEC Oil & Gas FZCO- Dubai, Sheikh Mohammad Bin Zayed Rd - Dubai - United Arab Emirates (UAE)
  • Dragon Oil LLC -Dubai, Umm Al Hurair 2, Building 16, Executive Office Building- Dubai, UAE
  • Lazer Clean Middle East L.L.C, Dubai - United Arab Emirates (UAE)
  • Esterpol DIP, Dubai Investments Park 2 - Dubai - United Arab Emirates (UAE)
Indonesia 20
  • Pacific Oil & Gas Indonesia. PT- Indonesia, RT.14/RW.20, Kebon Melati, Central Jakarta City, Jakarta 10230, Indonesia
  • GE Oil & Gas- Indonesia, Batu Ampar, Batam City, Riau Islands 29444, Indonesia
  • Medco E&P Indonesia TUGU- Indonesia, Jawa Barat 16750, Indonesia
  • Mubadala Petroleum - Indonesia, DKI Jakarta, Daerah Khusus Ibukota Jakarta 12310, Indonesia
Singapore 15
  • Pacific Oil & Gas -Singapore, 1 Raffles Pl, Singapore 048624
  • Repsol Oil & Gas SEA Pte. Ltd. -Singapore, tower 2 Marina Bay Financial Centre, Singapore 018983
  • BP Singapore Pte Ltd -Singapore, 7 Straits View, #26-01 Marina One East Tower, Singapore 018936
  • Cosmo Oil International Pte Ltd -Singapore, 6 Battery Rd, Singapore 049909
UK 40
  • Solutia UK Ltd, Corporation Rd, Newport NP19 4XF, United Kingdom (UK)
  • Stepan UK Ltd, Bridge House, Bridge Street, Stalybridge SK15 1PH, United Kingdom (UK)
  • Univar UK Ltd, Block K/Leslie Caerphilly CF83 1BQ, United Kingdom (UK)
Australia 40
  • Scott Chemicals Australia Pty Ltd, 21/296 Bay Rd, Cheltenham VIC 3192, Australia
  • Wildcat Chemicals Australia, 15 Magnesium St, Narangba QLD 4504, Australia
  • Knight Equipment Australia PTY Ltd., Unit 3/1B Kleins Rd, Northmead NSW 2152, Australia
Italy 30
  • Ecolab Production Italy, Via A. Grandi, 9, 20089 Rozzano MI, Italy
  • Sabic Italia Spa, Via S. Clemente, 1, 20122 Milano MI, Italy
  • TEVA Pharmaceutical Industries (Italy), Via Terrazzano, 77, 20017 Rho MI, Italy
Germany 32
  • Evonik Industries AG, Rößlerstraße 1, 64293 Darmstadt, Germany
  • DEA German Petroleum AG, Überseering 40, 22297 Hamburg, Germany
  • Oiltanking GmbH Germany, Saarstraße 14, 63450 Hanau, Germany
Kuwait 12
  • Kuwait National Petroleum Company, Hamad Al Zuwayer St, Ahmadi, Kuwait
  • Kuwait Oil Tanker Company, Kuwait
  • Kuwait Drilling Company, Kuwait City, Kuwait
Oman 12
  • Oman Oil Service Station, Seeb, Oman
  • CC Energy Development S.A.L Oman, 3026 As Saruj St, Muscat, Oman
Qatar 15
  • SPIE Oil & Gas Services Doha LLC (Qatar), Cat Building, Al Saad - 4th Floor، Doha, Qatar
  • Qatar Petroleum Oil Refinery, Mesaieed, Qatar

Vishal Steel India
Vishal Steel Products