Blue Star International
Mumbai, Maharashtra
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Industrial Flanges

In order to fulfill the demand of processing industries, we manufacture and supply high quality Flanges that is suitable for various temperature & pressure liquid transfer. These are available in different specifications. These Flanges are manufactured by high quality of raw material as to provide smooth flow of various kind of liquid.

We at Bluestar International provide an assorted range of Cast Iron Flanges in the nationals as well as international markets. The Cast Iron Flanges that we supply in the market are made from superior quality cast iron that makes them tough and stringent. These flanges are used in different industrial, mechanical and engineering applications.

Advantages of Cast Iron Flanges:

  • Customized specifications
  • Endurable and long lasting
  • Corrosion Resistant
  • Low Maintenance

Technical Specifications:

  • Sizes: 50 mm to 300 mm
  • Body Material: Cast Iron
  • IS Specification: IS 1358
We are engaged in offering a wide array of Butt Weld Pipe Flanges that are available in various dimensions to meet the needs of the clients. These are widely demanded by our clients and highly appreciated for its long service life. The manufactures range of Butt Weld Pipe Flanges are a blend of sophistication and innovation.


  • Sizes: 50 mm to 300 mm
  • Body Material: Cast Iron
  • IS Specification: IS 1358
We at Bluestar International Supplies Stainless Steel Pipe Flanges, SS Pipe Flange, SS Flanges, in ANSI, BS, JIS, UNI, MSS and SP Standards.


  • Full or reduced bore for excellent flow
  • Flexible 3 piece design
  • Anti blow out internally loaded stem for safety
We at Bluestar International are engaged in Supply of Stainless Steel Forged Flanges. We are offering these Stainless Steel Forged Flanges in market at affordable rates.


  • Name: Stainless Steel Forged Flange
  • Type: Slip On Flange, Welding Neck Flange, Blind Flange, Threaded Flange, Socket
  • Welding Flange, Flat Flange
  • Size:1/2”-36”
  • Pressure: ANSI 150LBS-2500LBS, DIN PN10-PN40, JIS 5K-30K
  • Standard: ANSI, DIN, JIS, BS, GB
  • Flange sealing surface: FF, RF, MFM, TG, RJ
  • Stainless Steel: ASTM A182 F304, 304L, F316, 316L;
Socket Weld Flanges, a popular type of pipe flange, was initially developed for use on small-sized high- pressure piping. The fabrication of this type of flange is similar to that of a slip-on flange. However, the internal pocket of a socket weld flange allows for a smooth bore and better fluid flow. When provided with an internal weld, the static strength of this flange is equal to slip-on flange, but the fatigue strength is 50% greater than double welding slip-on flanges. Smooth bore conditions in such a flange can easily be attained without having to bevel the flange face and, after welding, to reface the socket weld flange as would be required with slip-on flanges. For this reason, the internally welded flange is popular in chemical process piping.


  • Stainless Steel: ASTM A 182, A 240
  • Grade: F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750
  • Carbon Steel: ASTM A 105, ASTM A 181
  • Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9, F91
  • Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
  • Copper Alloys: Copper, Brass & Gunmetal
  • Size: 1/8" NB TO 48"NB.
  • Class: 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
We at bluestar international engaged in supply of Socket Flanges. Socket Flanges are similar to slip-on flanges, however, socket welds have an internal recess on the inside diameter to allow for a smoother flow of the process fluid. The positive of this is that is creates a smooth bore with the proper welding and grinding. The negative of this type of flange is that it can be more expensive than a slip-on due to more intricate machining, and they can be less readily available than slip-ons due to the fact that the bottom half of the inside diameter must be made to the same schedule as the pipe that is being used. (you must specify the schedule needed). These socket weld flanges were initially developed for use on smaller sizes of pipe at higher pressure ratings. They are more used on lower pressure temperature as well today. Specialty Flange and Fitting, Inc. offers these flanges in stainless and alloy material.


  • Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9, F91
  • Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
  • Copper Alloys: Copper, Brass & Gunmetal
  • Size: 1/8" NB TO 48"NB

We offer a comprehensive range of ANSI Standard Flanges that is widely demanded in several small scales to large scale processing industries. We manufacture this Stainless Steel Flanges using qualitative grade of raw material that is soured from our most reliable vendors. We export this Flanges in various countries across the globe.


Size:1/2" TO 16"
Type:WNRF, SORF, BLRF, Threaded etc
Dimension:ASME B 16.5
Material: SS304, SS304L, SS316, SS316L, SS316Ti, SS321
Pressure Rating:150, 300, 600, 900, 1500, 2500 Class
We manufacture and export high quality DIN Standard Flanges that is renowned in several welding and other petrochemical industries. We do complete quality and performance measures of DIN Standard Flanges at each level of manufacturing, ensuring excellent performance and durability. We also engaged in customization of these DIN Standard Flanges as per the client’s requirement by following International quality standards.


DescriptionRated Pressure / Precision Nominal / Nenndruck (in bar) (1 bar = 14.5 psi)


Blind Flanges2527252725272527252725272527
Slipon Flanges25732576
Welding neck flanges2630263026312632263326342635263626372638262826292627
Threaded flanges with neck2565256625662567256725682569
Material :-1.4301, 1.4306, 1.4401, 1.4404, 1.4571, 1.4841, 1.4541

We provide a unique range of JIS Standard Flanges which is manufactured using premium grade of raw material. These are used to transfer the flow of liquid in both direction and are applicable in many industrial areas. These JIS Standard Flanges are widely appreciated for corrosion resistance, high performance and easy maintenance.



Unit : mm
DIM./N.P.S. 15 20 25 32 40 50 65 80 100 125 150 200 250
A 5K 80 85 95 115 120 130 155 180 200 235 265 320 385
0 10K 95 100 125 135 140 155 175 185 210 250 280 330 400
B 5K 30 36 45 54 60 76 94 108 134 164 196 244 288
0 10K 30 36 45 54 60 76 94 108 134 164 196 244 288

BS Standard Flanges that we offer are available in various specifications and finishes. These are widely demanded in various small and large scale petrochemical industries for transferring high temperature and pressure liquid substance. These are widely used in the petrochemical and oil industries. We do complete quality and performance measure checking of these BS Standard Flanges before delivering at the client’s end.


Size:10 NB to 400 NB
Type:Slipon, Weldneck, Blind etc
Dimension:BS4504, BS 10 T - D, E, F etc.
Material: SS304, SS304L, SS316, SS316L, SS316Ti, SS321
Pressure Rating:PN5, PN10, PN16, etc.
We at Bluestar International are Engaged in Supply of Carbon Steel Flanges of different grades as per the required size and dimensions.


  • Carbon Steel ASTM/ASME SA105N Forged Flanges
  • Low Temp ASTM/ASME SA350 LF2 Forged Flanges
  • ANSI B16.5 150#, 300#, 600#, 900#, 1500# & 2500#
  • Slip On, Weld Neck, Screwed, Lap Joint, Socket Weld & Blind Flanges

Blue Star International

Jai Singh Solanki (Manager)
Office No. 04, Ground Floor, 8th Khetwadi Lane
Mumbai - 400004
Maharashtra, India
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