ASTM A181 Flanges

ASTM A181 flange

SA 181 gr 1 Class 60 Blind Flanges and A181 class 70 Slip On Flange supplier in Mumbai

SA-181-70 Weld Neck Flanges manufacturer in India as per ANSI / ASME B16.5, B16.47, BS4504, B16.48, BS 10, and EN-1092-1 standard

ASTM A181 grade 1 is a material specification for carbon steel nonstandard as-forged pipeline components such as flanges, pipe fittings, rings, valve component, round bars and many other forging parts, used for industrial piping applications. Its specification covers two classes’ i.e, ASTM A181 class 60 and ASTM A181 class 70. The forging made to this specification are limited to maximum weight of 10000 Lb.

The various types of ASTM A181 flange available are weld neck flange, slip on flange, threaded flange, socket weld flange, orifice flange, spectacle blind flange, long weld neck flange, reducing flange, etc.

sa 181 gr 1 is applicable to a wide range of industries and sectors. It has increased strength. It can be stressed and break under pressure and it is less likely to occur than with other types of steel.a181 gr 1 makes it particularly effective in applications where strength is needed. sa-181-70 has the same basic composition of iron and carbon, steel types tend to have a variety of alloying elements. It has carbon content up to 2.1% by weight. And as the carbon element content increases, it becomes harder and stronger after heat treatment. On the contrary, it becomes less ductile. Whereas in without heat treatment it reduces its weldability.

a181 flange is successful in pressure bearing and sealing pipe ends in heavy pressure applications like hydraulic system since it has a maximum bending stress at the center.

Table Of Content


A181 Flange Price List

Type Description USA FOB Price Malaysia FOB Price Europe FOB Price Singapore FOB Price Saudi Arabia (KSA) FOB Price
    Unit Per mtr Unit Per mtr Unit Per mtr Unit Per mtr Unit Per mtr
ASTM A181 flange Size : 1"NB x 300lb , SLIP ON US $ 2.01 Malaysia Ringgit 8.18 Euro 1.69 Singapore Dollar 2.69 Saudi Riyal 7.54

Standard Specification Of ASTM A181 flange

  • Material : ASTM A181 Class 70 CL1/CL2
  • Size Range: 1/2″ (15 NB) to 48″ (1200NB), ASME B16.47 Flanges size range: 26″ to 60″
  • Typical manufacturing specifications: A181 Grade 60 , ASME A181 Grade 60, MSS SP 44, ASME B16.47, ASME B16.5, NORSOK L-005, API 6A
  • Origin: European Origin, Indian Origin, US Origin, Korean Origin, Sweden Origin, Ukraine Origin, Japanese Origin Materials
  • A181 CL70 Carbon Steel Flanges Manufacturing Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
  • Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
  • Class / Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
  • Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ), LJ, FM , R.T.J , R.J and so on
  • ANSI A181 CL70 Carbon Steel Flanges: 150 to 2500 Size: 1/2"-24"
  • AWWA A181 CL70 Carbon Steel Flanges: classes B, D, E, F Size: 3"-144"
  • ANSI B16.5 ASTM A181 Class 70 Carbon Steel Flanges pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for ASME B16.5
  • ANSI B16.47 ASTM A181 Class 70 Carbon Steel Flanges pressure classes: 75, 150, 300, 400, 600, 900 for ASME B16.47

Common Types Of SA 181 gr 1 Blind Flange

Manufacturer and exporter of ASTM A181 grade 1 Socket Weld Flanges in Raised Face, Flate Face, and Ring Type Joint

ASTM A181 flange

ASTM A181 flange

ASTM A181 class 60 Blind Flanges

ASTM A181 class 60 Blind Flanges

ASTM A181 class 70 Slip On Flange

ASTM A181 class 70 Slip On Flange

ASTM A181 grade 1 Weld Neck Flanges

ASTM A181 grade 1 Weld Neck Flanges

SA 181 gr 1 Blind Flange

SA 181 gr 1 Blind Flange

A181 class 70 Slip On Flange

A181 class 70 Slip On Flange

A181 class 70 Slip On Flange Pressure Rating

ASME/ANSI B 16.5 A181 Grade 60 Welding Neck Flange, A181 Grade 60 Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, A181 Grade 60 Lap Joint Flange, Threaded Flange, A181 Grade 60 Ring Type Joint Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47 A181 Grade 60 Welding Neck Flange, A181 Grade 60 Blind Flange [Series A & B]
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36 A181 Grade 60 Welding Neck Flange, A181 Grade 60 Slip on Flange, A181 Grade 60 Threaded Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1 A181 Grade 60 Welding Neck Flange, A181 Grade 60 Hubbed Slip on Flange, A181 Grade 60 Hubbed Threaded Flange, Lapped Pipe End Flange, A181 Grade 60 Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] A181 Grade 60 Welding Neck Flange, A181 Grade 60 Hubbed Slip-On Hubbed Threaded, Plate Flange, A181 Grade 60 Loose Plate With Weld On Plate Collar, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS A181 Grade 60 Welding Neck Flange, Socket Welding Flange, A181 Grade 60 Slip-On Flange, A181 Grade 60 Blind Flange, A181 Grade 60 Screwed Boss Flange, A181 Grade 60 Lapped Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 A181 Grade 60 Welding Neck Flange, A181 Grade 60 Plate Slip-On Flange, A181 Grade 60 Screwed Boss Flange, Slip-On Boss Flange, A181 Grade 60 Blind Flange
TABLE D, E, F, H
DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS PN 6 TO PN 100

ASTM A181 Flanges Composition Chart

Carbon Manganese Phosphorus Sulphur Silicon
0.35 max 1.10 max 0.050 max 0.050 max 0.10 – 0.35

SA 181 gr 1 Blind Flange Mechanical Properties Chart

Tensile Strength, ksi Yield Strength, ksi Elongation, % Reduction of Area, %
60 min 30 min 22 min 35 min
Tensile Strength, ksi Yield Strength, ksi Elongation, % Reduction of Area, %
70 min 36 min 18 min 24 min

Industrial Flanges

Other Flanges

Other Products

Visit Factory

Visit Factory

Project Reference

Project Refrence

Tools & Downloads

ASTM A181 Class 60 and 70 Flanges manufacturers in India

SA 181 gr 1 Blind Flange manufacturer

Request a Quote

whatsapp chat