Flange Manufacturer in India

Flange Manufacturer in India

Check forged steel pipe flanges specification & price as per ASME B16.5

 

Pipe flange specification

 

 

 

 

 

Contact us for all pipe flanges types, and manufacturing methods, and view the pressure capacity of steel flange

Types of flanges used in oil and gas industry

Types of flanges used in oil and gas industry

 

Blind flange

Blind flange

Weld Neck flange

Weld Neck flange

Long Weld Neck flange

Long Weld Neck flange

Slip On flange

Slip On flange

Socket Weld flange

Socket Weld flange

Threaded flange

Threaded flange

Lap Joint flange

Lap Joint flange

Spectacle Blind flange

Spectacle Blind flange

Orifice flange

Orifice flange

 

Pipe flange price list

  • Products = WNRF Flange
  • Material = Duplex F51/F60
Size, Class, and Schedule Price In Dirham (AED) per unit
1” x CL. 150 x 44.00
1.1/4” x CL. 150 x Sch. 40S 61.00
1.1/2” x CL. 150 x Sch. 40S 83.11
2” x CL. 150 x Sch. 40S 109.35
3” x CL. 150 x Sch. 40S 209.00
3.1/2” x CL. 150 x Sch. 40S 233.18
4” x CL. 150 x Sch. 40S 295.51
5” x CL. 150 x Sch. 40S 370.64
6” x CL. 150 x Sch. 40S 453.00
8” x CL. 150 x Sch. 40S 749.00
10” x CL. 150 x Sch. 40S 1023.10
12” x CL. 150 x Sch. 40S 1586.00
14” x CL. 150 x Sch. 40S 2086.12
16” x CL. 150 x Sch. 40S 2592.00
18” x CL. 150 x Sch. 40S 2948.00
20” x CL. 150 x Sch. 40S 3621.10
1” x CL. 300 x Sch. 40S 68.45
1.1/4” x CL. 300 x Sch. 40S 88.06
1.1/2” x CL. 300 x Sch. 40S 124.54
2” x CL. 300 x Sch. 40S 145.00
3.1/2” x CL. 300 x Sch. 40S 222.46
3” x CL. 300 x Sch. 40S 298.10
3.1/2” x CL. 300 x Sch. 40S 482.11
4” x CL. 300 x Sch. 40S 646.12
5” x CL. 300 x Sch. 40S 830.66
6” x CL. 300 x Sch. 40S 1015.96
8” x CL. 300 x Sch. 40S 1283.20
10” x CL. 300 x Sch. 40S 1842.22
12” x CL. 300 x Sch. 40S 2670.00
14” x CL. 300 x Sch. 40S 3711.00
16” x CL. 300 x Sch. 40S 4628.87
18” x CL. 300 x Sch. 40S 5677.35
20” x CL. 300 x Sch. 40S 6868.174

 

Standard for flanges

Standard Size Class
ASME B16.5 1/4″ to 24″ 150 lb to 2500 lb
ASME B16.36 1/4″ to 24″ 300 lb to 2500 lb
ASME B16.47 26″ to 60″ 150 lb to 900 lb
ASME B16.48 1/4″ to 24″ 150 lb to 2500 lb
EN 1092-1/2 3/8″ to 80″ PN 2.5 to PN 400
BS 3293 26″ To 48″ 150 lb to 600 lb
MSS SP 44 22″ To 48″ 150 lb to 900 lb
Awwa C207 4″ To 144″ Class B/D/E/F
ISO flange 2 1/2″ To 24″
Australian flange 1/2″ To 48″ 150 lb to 2500 lb
Korean flange 1/2″ To 80″ 150 lb to 300 lb
Japanese standard flange 3/8 to 60″ 150 lb to 2500 lb
DIN flange 1/2″ To 48″ PN6 To PN40

 

Manufacturing methods of steel pipe flanges

Methods Standard Forging
Forged ASME B16.5 Forged
Plate ANSI B16.5 Plate
Cast ASTM A341 & MSS SP-51 Cast

 

Element Forged Plate Casting
Price Good Best Better
Strength Best Good Better
Sizes Better Good Best
Tolerances Good Better Best
Limiting Material Waste Best Good Better
Pressure Capacity Best Good Better
Material & Grade Better Good Best

 

Forged steel flanges pressure capacity

Types Class Pressure Capacity Schedule
Threaded (THRF flange) 150# To 2500# Low pressure SCH 40 To SCH 60
Lap joint (LJRF flange) 150# To 1500# Low pressure SCH 40
Slip On (SORF flange) 150# To 2500# Low pressure SCH 20/ 40/ 60
Blind (BLRF flange) 150# To 2500# Very high pressure All Schedule
Weld neck (WNRF flange) 150# To 2500# High pressure All Schedule
Socket Weld (SWRF flange) 150# To 1500# Low pressure SCH 40 To SCH 160
Orifice flange 150# To 900# High pressure SCH 80 / SCH STD
Spectacle blind (Spe flange) 300# To 600# Lower pressure SCH 10

 

Country Origin and Manufacturing Standards

USA Korea Malaysia Australia Canada Europe
ASME, ASTM, MSS SP44, AWWA, API-605 KS MS 816, MS 253 AS 2129 CSA B16.5/ B16.47 EN
Russia Japan Europe France Germany China
Ghost JIS ISO 7005, BS EN 1092-2 (Iron), PN NF E 29-200/ NF E 29-203 DIN GB/T 9112 / 9119
Italy Europe Europe USA Australia and UK
UNI 2276/ 6091 BS EN 1092-1 (Steel) BS EN 1092-3 (Alloy) ANSI BS 10

 

Supplier & stockists of industrial pipe flanges in Mumbai, offer BLRF, SORF, SWRF, and WNRF with CNC machining

Also check high temperature flanges (RF, FF, and RTF) face types & (DIN, EN, BS, and AWWA C207) standard.

Types of flange faces

Face Types Diagram Marking symbol Height
Raised Face Raised Face RF
  • 1/16″ for CL 150 to 300
  • 1/4″ for CL 400, 600, 900, 1500 and 2500
Flat Face Flat Face FF
Ring Type Joint Ring Type Joint RTJ Class 600 and above
Lap Joint Face Lap Joint Face LJRF
Tongue Groove Face Tongue Groove Face T&G
Male Female Face Male Female Face M&F
  • Female face = 3/16″ deep
  • Male face = 1/4″ high

 

Applications Flat (FF face) Ring joint (RTJ face) Raised (RF face)
High pressure and temperature applications No Yes No
Cast iron equipment Yes No No
Industrial valves Yes No No
Chemical plants No No Yes
Petrochemicals applications No Yes Yes
Low pressure water systems Yes No No

 

Steel flange thickness

SCH 10 SCH 20
SCH 30 STD Wall
SCH 40 SCH 60
EXT Hvy SCH 80
SCH 100 SCH 120
SCH 140 SCH 160
XX Hvy
Steel flange thickness

 

Threading types of flange

Threads Types Threads Full Form
NPT National Pipe Thread
BSPP (Male and Female) British Standard Pipe Parallel Thread
FPT FPT Female Pipe Thread
MPT Male Pipe Thread
BSPT (Female) British Standard Pipe Thread
BSP British Standard Pipe

 

Finish types of ANSI B16.5 flange

Types Of Finish Diagram Finish Value
Stock Finish Stock Finish 125- to 250-μin
Serrated Finish Serrated Finish Required 30 to 55 grooves per inches
Spiral Serrated Spiral Serrated Generated using a 90-deg tool
Concentric Serrated Concentric Serrated 125 and 500 micro inches
Smooth Finish Smooth Finish 63-125 AA
Mirror Finish Mirror Finish

 

ANSI B16.5 flange material and grade

 

Types of flanges classes

ASME B16.5 ASME B16.36 ASME B16.47 Series A ASME B16.47 Series B ASME B16.48
  • Class 150
  • Class 300
  • Class 600
  • Class 900
  • Class 1500
  • Class 2500
  • CL 300
  • CL 400
  • CL 600
  • CL 900
  • CL 1500
  • CL 2500
  • 150#
  • 300#
  • 600#
  • 900#
  • 1500#
  • 2500#
  • 75 PSI
  • 150 PSI
  • 300 PSI
  • 400 PSI
  • 600 PSI
  • 900 PSI
  • 1500 PSI
  • 2500 PSI
  • 300 LB
  • 600 LB
  • 900 LB
  • 1500 LB
  • 2500 LB

 

HS code for forged pipe flanges

Material HS Code
Stainless Steel 7307.21 / 7307.29
Carbon Steel 7307.91/ 7307.99
Alloy Steel 72052100
Inconel Alloy 7307.91/ 7307.99
Copper Nickel 74112200
Titanium 8108

 

Find all thicknesses of high pressure flanges in stock, bolt hole number, and suitable temperature of large diameter steel flanges in Class 150 To 2500

Suitable temperature of pipe weld flanges

Material & Grade Temperature In °C Temperature In °F
ASTM A182 F304 Up to 870°C 1,600°F
ASTM A182 F304L Up to 425°C
ASTM A182 F316 Up to 870°C 1,600°F
ASTM A182 Grade F5/ F9 /F11/ F22 -29°C to 593°C -20°F to 1,100°F
Inconel Flanges Up to 1,090°C 2,000°F
Hastelloy Flanges Up to 1,095°C 2,003°F
Titanium Flanges Up to 540°C 1,000°F
ASTM A105 flange (A515 Grade 70/ A350 LF2 Cl 1 & 2/ SA216 Grade WCB) Up to 425°C 2200 to 1700 °F
ASTM A350 LF6 Class 1 Up to 590 °C 1100 °F
ASTM A537 Class 1 Up to 371°C 700°F

 

American standard of ASME B16.5 flange

Material Forged Plate Cast
Stainless Steel ASTM A182 ASTM A240 ASTM A351
Carbon Steel ASTM A105/ A350/ A694 ASTM A515 ASTM A216/ A352
Alloy Steel ASTM A182 ASTM A387 ASTM A217
Duplex & Super Duplex ASTM A182 ASTM A240 ASTM A351/ A890
Titanium ASTM B381 ASTM B265 ASTM B367
Copper Nickel ASTM B151 ASTM B122 ASTM B466
Nickel Alloy ASTM B564 ASTM B409 ASTM A484

 

Pressure types of forged flanges

Flanges Types Pressure Temperature Range
WNRF Flanges (Weld Neck ) up to Class 2500 -29°C – 538°C
SORF Flanges (Slip-On) up to CL 2500 -10°C – 300°C
BLRF Flanges (Blind) up to 2500# -20 to +400°C
THRF Flanges (Threaded) up to 2500 LBS 260°C and below -45°C
SWRF Flanges (Socket Weld) up to Class 600 -26 ⁰C to 205 ⁰C
LJRF Flanges (Lap Joint) up to CL 2500 -60°F to +300°F

 

Refer ASME B16.5 flanges thickness tolerance, Markings, and weight chart of forged flanges at Ramesh Group

Flange thickness tolerance

Tolerances In MM Thickness In MM
+3.0, -0.0 mm tf ≤ 25 mm
+5.0, -0.0 mm 25 < tf ≤ 50 mm
+8.0, -0.0 mm 50 < tf ≤ 75 mm
+10.0, -0.0 mm tf > 75 mm 0
Flange thickness tolerance

 

Markings on industrial steel flanges

Forged flanges marking

Forged flanges marking

  • ASTM specification
  • Grade (316)
  • Size = DN20
  • Rating = PN10
  • Type = Blind

Plate flanges marking

Plate flanges marking

  • ASTM specification
  • Grade (Monel 400)
  • Size = 2″
  • Rating = Class 150
  • Type = Slip On

Cast flanges marking

Cast flanges marking

  • ASTM specification
  • Grade = Cast Iron
  • Size = 4″
  • Rating = Class 125
  • Type = Weld Neck

 

RTJ Flanges marking

RTJ Flanges marking

  • ASTM specification
  • Grade = ASTM A105
  • Size = 1″
  • Rating = Class 1500
  • Type = Weld Neck Ring Joint

 

Supporting material of Class 150 flanges

  • Ring-Joint
  • Bolts & Nust
  • Gasket
  • Washer and Screw

 

Steel flange bolt hole diameter and number

Class Types No. of bolt bolt diameter in MM
Class 150 12 25.4
Class 300 16 28.6
Class 400 16 34.9
Class 600 20 34.9
Class 900 20 38.1
Class 1500 16 54
Class 2500 12 73

 

Torque sequence for low pressure flanges

Type Diagram Sequence For Bolt
4 bolt flanges 4 bolt flanges 1 To 4
8 bolt flanges 8 bolt flanges 1 To 8
12 bolt flanges 12 bolt flanges 1 To 12
16 bolt flanges 16 bolt flanges 1 To 16
20 bolt flanges 20 bolt flanges 1 To 20
24 bolt flanges 24 bolt flanges 1 To 24
28 bolt flanges 28 bolt flanges 1 To 28
32 bolt flanges 32 bolt flanges 1 To 32

 

Incoming Inspection

    • Correlated MTC verification
    • Sample Cutting from each lot to verify Mechanical and Chemical Properties
    • Visual and Dimensional Inspection
    • Ultrasonic Test

Prior to manufacturing, Each pipe flanges with Raw Material Heat Number after receiving clearance from QA/QC Engineers along with the supporting documents of above tests carried out

In Process Inspection

Heat Treatment (Soultion Annealing) – Monitoring temperature and time

  • One sample test for each heat/each heat treatment batch
  • Chemical and Mechanical test
  • UTS, YS, % elongation & RA
  • IGC Test
  • Hardness Test
  • IGC Test (If Applicable)

NDT Test – Free from surface defects – 100% Quantity

  • Visual Inspection
  • Dimensional Inspection
  • Hardness Test
  • Processing conditions check
  • Raw Material Identification (By marking done during Incoming Inspection)
  • Surface Cleaning

Colour coding is followed

  • Accepted forgings = Blue Colour
  • Rejected forgings = Red Colour
  • Repair Forgings = Yellow Colour

Finished Goods Inspection

  • Visual, Dimensional check – 100% Quantity
  • PMI check – 100% Quantity
  • Magnetic Particle Inspection / Dye Penetrate Test / Liquid Penetrant test on Machined parts – 100% Quantity
  • Mill Test Certificate review – 100% Quantity
  • Colour, Marking, Packing – 100% Quantity

Additional Information

  • Dies are checked from time to time and if the dies are oversized rectification process is carried out prior to manufacturing
  • Stage wise report is maintained for the entire internal process of manufacturing and inspection procedure
  • Day to day progress of manufacturing dimensions are noted and ensured that they are within permissible limits
  • NDT/PMI/Colour Coding procedure manual is being prepared by Ramesh Steel Corporation
  • Quarterly training is being given to NDT Team, PMI Team, QC/QA Inspectors

Frequently Asked Questions (FAQs) –

Will you provide MTC EN 10204 3.1 with material?

Yes, we provide Material Test Certificates (MTC) in accordance with EN 10204 3.1 standards.

Will you provide MTC EN 10204 3.2 with material?

Certainly, we offer Material Test Certificates (MTC) in compliance with EN 10204 3.2 standards upon request. Charges extra.

Do you provide sample MTC for approval?

Yes, we do

Do you provide certificate of origin? Any extra charges

Yes, we provide at no additional cost.

Do you provide certificate of conformity?

Yes, upon request

Can you provide PMI report with photographs and videos before dispatch for 100% quantity?

Yes, we can provide you the same for 100% ordered quantity

) Is the quote valid for a minimum of 60 days, considering the prolonged duration of the bidding process?

Yes, the quote is indeed valid for at least 60 days

What is the transit time to Jebel Ali Seaport, Dubai?

6 Days – direct vessel

What is the transit time to Sheikh Khalifa Seaport, Abu Dhabi?

8 Days – direct vessel

Will the marking on flanges will be stencilled or hard puched?

Marking on flanges will be hard punched which is as per standard.

Will the Heat Number marked on all material match with MTC?

Yes, we do

Is all material NACE MR0175 certified?

Yes, we do

Will you put raise face protector to avoid damage?

Yes, we do

Do you accept third party inspection?

Yes, we do

What is the origin of material?

India