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Super Duplex Flanges

Super duplex flanges  

What are super duplex flanges?

These highly coveted products comprise both ferrite and austenitic grades of stainless steel. Super duplex flanges contain chromium, molybdenum, and nickel. A frequently used version is 2507, with these additives in proportions of 25%, 7%, and 4%. Super duplex pipe flanges have excellent strength and corrosion resistance.


What are the most common applications of super duplex flanges?

Chemical processing, petrochemicals, and pulp and paper production industries use these components. An a182 super duplex flangeis a dependable alternative for oil refineries and marine sectors.An sdss blind flange works well in sour wells with high brine levels.

Check SDSS Blind Flange Pressure Ratings and Specification Below

Specification of super duplex flanges


Super duplex flanges specifications  

Super Duplex Flanges Stockist in Mumbai but shipping to over 10 countries in Asia

Country  Name  Delivery Time (days)
Vietnam  8-10
Singapore  8-10
Indonesia  8-10
Malaysia  8-10
Thailand  8-10
Sri Lanka  8-10
Japan  8-10

Pressure ratings of super duplex blind flanges


ANSI/ASME B16.34 Pressure ratings
Temperature °F   300 Class 150 Class 400 Class 900 Class 600 Class 2500 Class 1500 Class
200   600 230 800 1800 1200 5000 3000
-20 to 100   720 275 960 2160 1440 6000 3600
400   495 190 660 1490 995 4140 2485
300   540 205 720 1620 1080 4500 2700
500   465 170 620 1395 930 3880 2330
650   430 125 575 1290 860 3580 2150
600   435 140 580 1310 875 3640 2185
700   425 110 565 1275 850 3540 2125
800   405 80 540 1210 805 3360 2015
750   415 95 555 1245 830 3460 2075

Get 25cr Super Duplex Slip On Flanges in Variety of Sizes, For More Details Check Weight Chart

25cr Super Duplex Slip On Flanges Weight Chart


Normal Pipe Size 01/2 03/4 1 2 3 4 5 6 8 10 12 14 16 18 20 22 24
Blind flange 2.03 3.086 3.086 4.4 6.39 7.05 9.92 13 16.97 23.36 28.66 38.8 57.54 80.46 114.19 163.8 208.33 251.1 312.61 367.06 486.11
Weld Neck flange 3.08 3.08 3.08 3.96 5.95 7.05 9.92 13 16.97 21.82 27.77 38.8 57.54 80.46 114.19 163.8 188.49 248.02 312.61 367.06 471.34
Slip On flange 1.98 1.98 3.96 5.95 7.05 7.93 11.9 15.87 20.94 27.77 36.81 49.6 80.46 123 183.64 248.02 312.61 410.72 511.03 634.93 793.66
Socket Weld flange 1.98 1.98 3.96 5.07 7.05 9.03 11.9 17.85 19.84 26.23 35.71 44.75 68.56 99.2 140.87 204.36 248.02 317.4 396.83 461.42 575.4

How do high-quality raw materials impact the properties of super duplex blind flanges?

These flanges can work in critical applications, necessitating superior raw materials for optimum performance. A 25 cr SDSS forged flange has high tensile yield strength. It helps keep it lightweight without compromising quality. super duplex blind flanges have low alloy consumption during manufacturing, thus saving costs.

Types of SDSS flanges


Super duplex weld neck flanges

Super duplex weld neck flanges

Super duplex slip on flanges

Super duplex slip on flanges

Super duplex stainless steel blind flanges

Super duplex stainless steel blind flanges

Super duplex flanges

Super duplex flanges

Find ASTM A182 super duplex Weld Neck Flanges Bolts Hole Diameter and Equivalent Properties

ASTM A182 Super Duplex Flanges Bolts Hole Diameter


DN In Inch 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600
Diameter Length 3.74 4.13 4.52 5.51 5.9 6.49 7.28 7.87 8.66 9.84 11.22 13.38 15.94 18.11 20.47 22.83 25.19 28.14 33.07
Bolts In Inch M12.50 M12.55 M12.55 M16.55 M16.55 M16.65 M16.65 M16.70 M16.70 M16.70 M20.70 M20.75 M24.80 M24.80 M24.90 M27.100 M27.120 M30.125 M33.140
Thickness   0.55 0.62 0.62 0.62 0.62 0.7 0.7 0.78 0.78 0.86 0.86 0.94 1.02 1.1 1.25 1.41 1.57 1.73 2.04
Number Of Bolts Hole 4 4 4 4 4 4 4 8 8 8 8 12 12 12 16 16 20 20 20

Equivalent grade of SDSS socket weld flanges


STANDARD WERKSTOFF NR. UNS
Super duplex 1.4410 S32750/S32760

What are the key requirements of the astm a182 standard for super duplex flanges? How do they impact the material selection and manufacturing process?

This specification recommends sizes from ½” to 24″. An ASTM A182 SDSS blind flange can be of different types, like a flat face, a ring-type joint, etc. The components can get heat-treated and must conform to the stated tensile strength, elongation, brinell hardness, etc. Asme sa182 sdss slip on flanges have a pressure rating up to class 2500. Selecting high-quality raw materials and following a precise manufacturing process is imperative for meeting these guidelines.

Check Super Duplex Steel Threaded Flanges Chemical Composition and Mechanical Properties

Chemical composition of super duplex blind flanges


Grade C N P Si Mn Mo Ni Cr S Other
S32750/S32760 0.030 0.24/0.32 0.035 0.80 1.20 3.0/5.0 6.00/8.00 24.0/26.0 0.020 Cu:0.50

Mechanical properties of super duplex steel slip on flange


Grade Density Melting point Yield strength(0.2% offset) Tensile strength Elongation
S32750/S32760 7.8g/cm3 1350°C(2460°F) PSi-80000, MPa-550 PSi-116000, MPa-800 15%

What makes super duplex steel slip on flange versatile and suitable for use in a wide range of industrial applications?

These super duplex forged ring offer top-notch resistance to corrosion cracking from seawater, acetic acid, formic acid, and chlorides. an SDSS slip on flange has a high thermal conductivity and a low expansion coefficient – perfect for heat exchangers.the favourable properties of a flange super duplex, like strength and weldability, stem from the chemical composition and microstructure.

Find Type 25cr Duplex Socket Weld Flanges in Different Face Types, Check Manufacturing Technique Here

25cr Duplex Socket Weld Flanges Manufacturing Technique


  Price Capacity and Strength Dimensional Tolerances Limiting Material Waste Sizes and Material
Cutting Best Good Better Good Good
Casting Better Better Best Better Best
Forged Good Best Good Best Better

What are the different materials used in the production of super duplex flanges? How do they impact the properties of the flange?

The materials for producing SDSS components are high-quality steel, nickel, chromium, and molybdenum. Ferritic and austenitic microstructures combine in equal proportions in super duplex steel flanges. It boosts strength, weldability, and resistance to pitting and crevice corrosion.