Duplex Pipe Fittings
Duplex Steel Elbow/ Tee and Duplex Fittings manufacturer in India
Pipe fittings are devices that are used to influence the characteristics of the flow in the system. The Duplex Pipe Fittings are designed with a ferritic and austenitic microstructure. These fittings are designed with a chemical content of nickel, chromium, molybdenum, and nitrogen. This gives the Duplex Steel Fittings outstanding corrosive and reducing media. These fittings work well in elevated temperatures and are very reliable in stress-induced conditions. The Duplex Stainless Steel Pipe Fittings exhibit superior strength compared to normal grades and have outstanding mechanical properties. The fittings can be welded to different fixtures following standard welding procedures. The quality-assured Duplex Fittings are produced with the best raw materials and latest technology.
The Duplex Elbow is one of the most common grades of fittings in this range. These elbows help in changing the direction of the flow in the system. They are generally manufactured in 45 and 90-degree turns and can be customized as per requirements. A Duplex Tee has three outlets that allow them to connect to three channels. Designed in the shape of a T, these fittings can be equal and reduced in their configurations. The Duplex Reducer is employed to connect piping fixtures of dissimilar sizes. The reducer can be availed as eccentric and concentric type specifications. A Duplex End Cap is employed to close or terminate the flow of media through its outlet. The end cap protects the piping fixtures during movement and storage from toxic reducers and damage. The Duplex Stub Ends are designed with a short length of a pipe wherein one of its ends is flared, and the other one is square cut and welded to pipe grade of the same nominal sizes. We are the Duplex Fittings stockist who keeps stock of fittings of different sizes and shapes, allowing them to be used for different applications. We are leading Duplex Pipe Fittings manufacturers in India.
You will find competitive price compared to Duplex Fittings stockist in Mumbai, manufacturer of Duplex Steel Buttweld Reducer, Elbow and Stub end in India
- Specification List of Duplex Pipe Fittings
- Duplex Pipe Fittings Price List
- Dimension of Duplex Steel Buttweld Fittings
- DSS Fittings Pressure Rating
- Duplex Steel Pipe Fittings Chemical Composition
- Duplex Steel Pipe Fittings Chemical Composition
- Duplex SS Fittings Equivalent Grade
- Physical Properties of Duplex stainless steel Weld Fittings
- Different Types of Duplex Pipe Fittings
- Various Types of Duplex Elbow
- Dimension Table of DSS Elbow
- Duplex Reducer Types
- ASTM A815 Reducer Weight Chart
- Available Types of DSS End Cap
- Duplex End Cap Dimensions
- Types Of DSS Tee
- Tolerances for ASTM A815 180° Returns & Lap Joint Stub Ends
- Tolerance of DSS Fittings
- SA815 DSS Fittings Equivalent Length Chart
- Machinability of Duplex Steel Fittings
- What is radius size for ASME SA 815 long radius elbow?
- DSS Fittings Weldability
- Duplex Steel Pipe Fittings Selection Criteria
- Application of ASTM A815 DSS Buttweld Fittings
- ASME SA 815 DSS Welded Fittings Inspection and Testing
Specification List of Duplex Pipe Fittings
| Size: | 1/8” NB TO 48” NB. (Seamless & Fabricated, 100% X-Ray Welded) |
| Type: | Elbow, Tee, Cap, Reducer, Stud-Ends, Cross |
| Standard: | ASME/ANSI B16.9,EN10253, DIN2605/2615/2616/2617, JIS B2311/2312/2313, MSS SP-43/75 |
| Bending Radius By Manufacturer | Radius=1 D, 2D, 3 D, 5D, 6D, 8 D, 10D |
|---|---|
| WT: | Sch 5s, Sch 40s, Sch 10s,Sch 160s, Sch 80s, Sch XXS |
| Forming: | Mandrel Forming or Press Forming |
| Surface finish Provided By Manufacturer | Shot blasting, Sand blasting or Pickling surface |
| Connection |
|
| Application | For Water, Oil and Gas Industrial |
| Thickness | SCH 120, SCH30, SCH20, SCH60, XS, STD SCH40, SCH 80, SCH 140, SCH10, SCH 160, SCH 100, XXS available with NACE MR 01-75 |
| Elbows Manufacturer | Angle : 22.5 deg, 45 deg, 30deg, 90 deg, 1.0D, 180 deg, 1.5D, 3D, 2.5D, 2.0D, 4D, 6D, 5D, 7D-40D . Standard: ASME B16.28, GB, ASME B16.9, MSS SP-75 JISB2311 DIN2605 JISB2312 JISB2313, ASME B16.25, BS, ISO |
| Manufacturing process | Push, Forge, Press, Cast, etc. |
| Test Certificates By Manufacturer | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Origin & Mills | European, Japanese, USA, Korean, Ukraine, Indian, Russian |
Duplex Pipe Fittings Price List
$ 547.10
Per piece
DSS ELBOW SA815 SCH.80S BW90 LR ASME B16.9
$ 27.89
Per Kg
300 NB SCH.40S 90 DEGREE LR BW ASTM A815 ELBOW
$74.59
Per Kg
TEE-EQUAL, BUTTWELD, DSS
$ 334.02
Per piece
10 SCH5S TEE EQUAL BW. WELDED DUPLEX
$ 219.82
Per Kg
6 SCH40S * 4 SCH40S REDUCER ECC SMLS ASTM A815
$2.33
Per Kg
4 Inch End Cap, SA815 DSS
Manufacturer of Duplex Fittings offers wide selection of DSS Cross, Cap,5D/ 3D Pipe Bend, Stub Ends, and 180 Degree U Bend at lowest price in Asia
Dimension of Duplex Steel Buttweld Fittings
| Nominal Pipe Size | Outside Diameter | 180° Returns | 45° Elbows | 90° Elbows | ||||
|---|---|---|---|---|---|---|---|---|
| (inches) | Long Radius | Long Radius | Long Radius | Short Radius | ||||
| (mm) | (inches) | Center to Center (inches) | Back to face (inches) | Center to Face (inches) | Radius (inches) | Center to Face (inches) | Center to Face (inches) | |
| 1/2 | 21.3 | 0.840 | 2 | 1 7/8 | 5/8 | 1 1/2 | – | |
| 3/4 | 26.7 | 1.050 | 2 1/4 | 1 11/16 | 7/16 | 1 1/8 | – | |
| 1 | 33.4 | 1.315 | 3 | 2 3/16 | 7/8 | 1 1/2 | 1 | |
| 1 1/4 | 42.2 | 1.660 | 3 3/4 | 2 3/4 | 1 | 1 7/8 | 1 1/4 | |
| 1 1/2 | 48.3 | 1.900 | 4 1/2 | 3 1/4 | 1 1/8 | 3 | 2 1/4 | 1 1/2 |
| 2 | 60.3 | 2.375 | 6 | 4 3/16 | 1 3/8 | 4 | 3 | 2 |
| 2 1/2 | 73.0 | 2.875 | 7 1/2 | 5 3/16 | 1 3/4 | 5 | 3 3/4 | 2 1/2 |
| 3 | 88.9 | 3.500 | 9 | 6 1/4 | 2 | 6 | 4 1/2 | 3 |
| 3 1/2 | 101.6 | 4.000 | 10 1/2 | 7 1/4 | 2 1/4 | 7 | 5 1/4 | 3 1/2 |
| 4 | 114.3 | 4.500 | 12 | 8 1/4 | 2 1/2 | 8 | 6 | 4 |
| 5 | 141.3 | 5.563 | 15 | 10 5/16 | 3 1/8 | 10 | 7 1/2 | 5 |
| 6 | 168.3 | 6.625 | 18 | 12 5/16 | 3 3/4 | 12 | 9 | 6 |
| 8 | 219.1 | 8.625 | 24 | 16 5/16 | 5 | 12 | 12 | 8 |
| 10 | 273.1 | 10.750 | 30 | 20 3/8 | 6 1/4 | 15 | 15 | 10 |
| 12 | 323.9 | 12.750 | 36 | 24 3/8 | 7 1/2 | 18 | 18 | 12 |
DSS Fittings Pressure Rating
| Pipe Sch | OD(inch) | Wall Thick. (inch) | Temperature(oF) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | |||
| Allowable Stress(psi) | |||||||||||
| 16700 | 16700 | 16700 | 15500 | 14400 | 13500 | 13200 | 12900 | 12600 | |||
| 40 | 1.315 | 0.133 | 2205 | 2205 | 2205 | 2047 | 1902 | 1783 | 1743 | 1703 | 1664 |
| 80 | 1.315 | 0.179 | 3061 | 3061 | 3061 | 2841 | 2640 | 2475 | 2420 | 2365 | 2310 |
| 160 | 1.315 | 0.250 | 4493 | 4493 | 4493 | 4170 | 3874 | 3632 | 3552 | 3471 | 3390 |
| 40 | 1.900 | 0.145 | 1629 | 1629 | 1629 | 1512 | 1404 | 1317 | 1287 | 1258 | 1229 |
| 80 | 1.900 | 0.200 | 2303 | 2303 | 2303 | 2138 | 1986 | 1862 | 1821 | 1779 | 1738 |
| 160 | 1.900 | 0.281 | 3362 | 3362 | 3362 | 3120 | 2899 | 2717 | 2657 | 2597 | 2536 |
| 40 | 2.375 | 0.154 | 1371 | 1371 | 1371 | 1272 | 1182 | 1108 | 1083 | 1059 | 1034 |
| 80 | 2.375 | 0.218 | 1985 | 1985 | 1985 | 1843 | 1712 | 1605 | 1569 | 1534 | 1498 |
| 160 | 2.375 | 0.344 | 3283 | 3283 | 3283 | 3047 | 2831 | 2654 | 2595 | 2536 | 2477 |
| 40 | 3.500 | 0.216 | 1301 | 1301 | 1301 | 1208 | 1122 | 1052 | 1028 | 1005 | 982 |
| 80 | 3.500 | 0.300 | 1844 | 1844 | 1844 | 1712 | 1590 | 1491 | 1458 | 1425 | 1391 |
| 160 | 3.500 | 0.438 | 2787 | 2787 | 2787 | 2587 | 2403 | 2253 | 2203 | 2153 | 2103 |
| 40 | 4.500 | 0.237 | 1102 | 1102 | 1102 | 1023 | 950 | 891 | 871 | 851 | 831 |
| 80 | 4.500 | 0.337 | 1596 | 1596 | 1596 | 1482 | 1377 | 1291 | 1262 | 1233 | 1204 |
| 160 | 4.500 | 0.531 | 2611 | 2611 | 2611 | 2424 | 2552 | 2111 | 2064 | 2017 | 1970 |
| 40 | 5.563 | 0.258 | 965 | 965 | 965 | 896 | 832 | 780 | 763 | 746 | 728 |
| 80 | 5.563 | 0.375 | 1428 | 1428 | 1428 | 1325 | 1231 | 1154 | 1129 | 1103 | 1077 |
| 160 | 5.563 | 0.625 | 2474 | 2474 | 2474 | 2296 | 2133 | 2000 | 1955 | 1911 | 1866 |
| 40 | 6.625 | 0.280 | 877 | 877 | 877 | 814 | 756 | 709 | 693 | 677 | 661 |
| 80 | 6.625 | 0.432 | 1379 | 1379 | 1379 | 1280 | 1189 | 1115 | 1090 | 1065 | 1040 |
| 160 | 6.625 | 0.719 | 2382 | 2382 | 2382 | 2211 | 2054 | 1925 | 1883 | 1840 | 1797 |
| 40 | 8.625 | 0.322 | 771 | 771 | 771 | 716 | 665 | 623 | 610 | 596 | 582 |
| 80 | 8.625 | 0.500 | 1218 | 1218 | 1218 | 1131 | 1050 | 985 | 963 | 941 | 919 |
| 160 | 8.625 | 0.906 | 2298 | 2298 | 2298 | 2133 | 1982 | 1858 | 1817 | 1775 | 1734 |
| 40 | 10.750 | 0.365 | 699 | 699 | 699 | 649 | 603 | 565 | 553 | 540 | 528 |
| 80 | 10.750 | 0.594 | 1159 | 1159 | 1159 | 1075 | 999 | 937 | 916 | 895 | 874 |
| 160 | 10.750 | 1.125 | 2289 | 2289 | 2289 | 2124 | 1974 | 1850 | 1809 | 1768 | 1727 |
Duplex Steel Pipe Fittings Chemical Composition
| % | 2205 | UR52N+ |
| C | 0-0.03 | 0.03 max |
| Si | 1.0 | 0.8 |
| Ni | 4.5-6.5 | 5.5-8.0 |
| P | 0-0.03 | 0.035 |
| S | 0-0.02 | 0.02 |
| Mn | 2.0 | 1.5 |
| Cr | 21-23 | 24-26 |
| Mo | 2.5-3.5 | 3.0-5.0 |
| N | 0.08-0.2 | 0.2-0.35 |
| Cu | – | 0.5-3.0 |
DSS Buttweld Fittings Mechanical Properties
| Grade | 2205 | UR52N+ |
| Tensile Strength (MPa) | 620 | 770 |
| Proof Stress 0.2% (MPa) | 450 | 550 |
| Elongation A5 (%) | 25 | 25 |
Duplex SS Fittings Equivalent Grade
| Euronorm | UNS | BS | En | Grade |
| 1.4462 | S31803 S32205 | 318S13 | – | 2205 |
| 1.4507 | S32520 S32550 | – | – | UR52N+ |
Manufacturer of Duplex Stainless Steel Pipe Fittings as per ANSI/ ASME B16.9, MSS-SP-43, NACE MR0103/ MR0175
Physical Properties of Duplex stainless steel Weld Fittings
| Property | 2205 | UR52N+ |
| Density (g.cm3) | 7.805 | 7.810 |
| Modulus of Elasticity (GPa) | 200 | 205 |
| Electrical Resistivity (Ω.m) | 0.85 x 10-6 | 0.85 x 10-6 |
| Thermal Conductivity (W/m.K) | 19 at 100 °C | 17 at 100 °C |
| Thermal Expansion (m/m.K) | 13.7 x 10-6to 100 °C | 13.5 x 10-6to 200 °C |
Different Types of Duplex Pipe Fittings
Duplex Pipe Fittings
Duplex Steel Buttweld Fittings
Duplex Steel Fittings
Duplex SS Fittings
Duplex Tube Fittings
Duplex Steel Pipe Fittings
Duplex Fittings
Duplex Stainless Steel Pipe Fittings
DSS 180 Degree U Bend
DSS Seamless Pipe Fittings
ASTM A815 Fittings
ASME SA 815 Pipe Fittings
Duplex SS Buttweld Pipe Fittings
Duplex Welded Pipe Fittings
ASME SA 815 Welded Buttweld Fittings
ASME SA 815 Stub End
Duplex Steel Equal Cross
Duplex Stainless Steel Lap Joint Stub End
DSS Reducing Cross
Duplex Short Stub End
ASTM A815 Pipe Bend
Various Types of Duplex Elbow
Duplex Elbow
Duplex Stainless Steel Elbow
Duplex Pipe Elbow
DSS Elbow, ASTM A815 UNS-S31803
ASME SA815 Long Radius Elbow
DSS ASTM A815 Elbow, BW, 6 Inch, SCH 80
Dimension Table of DSS Elbow
| NPS | Center to End , A | OD, D |
| 1 | 25 | 33.4 |
| 1 ¼ | 32 | 42.2 |
| 1 ½ | 38 | 48.3 |
| 2 | 51 | 60.3 |
| 2 ½ | 64 | 73 |
| 3 | 76 | 88.9 |
| 3 ½ | 89 | 101.6 |
| 4 | 102 | 114.3 |
| 5 | 127 | 141.3 |
| 6 | 152 | 168.3 |
| 8 | 203 | 219.1 |
| 10 | 254 | 273 |
| 12 | 305 | 323.8 |
| 14 | 356 | 355.6 |
| 16 | 406 | 406.4 |
| 18 | 457 | 457 |
| 20 | 508 | 508 |
| 22 | 559 | 559 |
| 24 | 610 | 610 |
Duplex Reducer Types
Duplex Concentric Reducer
Duplex Eccentric Reducer
Duplex Pipe Reducer
ASTM A815 Reducer, Duplex-SS, SCH 80, PE
SCH 80S Concentric Reducer, ASME B16.9, DSS
ASME SA 815 Buttweld Reducer
ASTM A815 Reducer Weight Chart
| NPS | KG | LBS |
| 3/4-1/2 | 0.1 | 0.22 |
| 3/4-3/8 | 0.09 | 0.2 |
| 1-3/4 | 0.2 | 0.45 |
| 1-1/2 | 0.2 | 0.45 |
| 1.1/4-1 | 0.23 | 0.5 |
| 1.1/4-3/4 | 0.23 | 0.5 |
| 1.1/4-1/2 | 0.23 | 0.5 |
| 1.1/2-1.1/4 | 0.35 | 0.78 |
| 1.1/2-1 | 0.34 | 0.75 |
| 1.1/2-3/4 | 0.32 | 0.7 |
| 1.1/2-1/2 | 0.29 | 0.65 |
| 2-1.1/2 | 0.54 | 1.2 |
| 2-1.1/4 | 0.52 | 1.15 |
| 2-1 | 0.5 | 1.1 |
| 2-3/4 | 0.45 | 1 |
| 2.1/2-2 | 0.91 | 2 |
| 2.1/2-1.1/2 | 0.86 | 1.9 |
| 2.1/2-1.1/4 | 0.84 | 1.85 |
| 2.1/2-1 | 0.79 | 1.75 |
| 3-2.1/2 | 1.25 | 2.75 |
| 3-2 | 1.18 | 2.6 |
| 3-1.1/2 | 1.13 | 2.5 |
| 3-1.1/4 | 1.09 | 2.4 |
| 3.1/2-3 | 1.81 | 4 |
| 3.1/2-2.1/2 | 1.59 | 3.5 |
| 3.1/2-2 | 1.59 | 3.5 |
| 3.1/2-1.1/2 | 1.47 | 3.25 |
| 3.1/2-1.1/4 | 1.47 | 3.25 |
| 4-3.1/2 | 2.15 | 4.75 |
| 4-3 | 2.04 | 4.5 |
| 4-2.1/2 | 1.99 | 4.38 |
| 4-2 | 1.93 | 4.25 |
| 4-1.1/2 | 1.81 | 4 |
| 5-4 | 3.74 | 8.25 |
| 5-3.1/2 | 3.52 | 7.75 |
| 5-3 | 3.4 | 7.5 |
| 5-2.1/2 | 3.18 | 7 |
| 5-2 | 2.95 | 6.5 |
| 6-5 | 5.44 | 12 |
| 6-4 | 5.22 | 11.5 |
| 6-3.1/2 | 4.99 | 11 |
| 6-3 | 4.76 | 10.5 |
| 6-2.1/2 | 4.54 | 10 |
| 8-6 | 8.48 | 18.7 |
| 8-5 | 8.16 | 18 |
| 8-4 | 7.71 | 17 |
| 8-3.1/2 | 7.48 | 16.5 |
| 10-8 | 13.38 | 29.5 |
| 10-6 | 13.38 | 29.5 |
| 10-5 | 12.7 | 28 |
| 10-4 | 11.57 | 25.5 |
| 12-10 | 19.73 | 43.5 |
| 12-8 | 19.05 | 42 |
| 12-6 | 18.14 | 40 |
| 12-5 | 17.69 | 39 |
| 14-12 | 36.29 | 80 |
| 14-10 | 35.92 | 79.2 |
| 14-8 | 35.61 | 78.5 |
| 14-6 | 35.38 | 78 |
| 16-14 | 41.28 | 91 |
| 16-12 | 40.82 | 90 |
| 16-10 | 40.37 | 89 |
| 16-8 | 40.14 | 88.5 |
| 16-6 | – | – |
| 18-16 | 52.16 | 115 |
| 18-14 | 51.71 | 114 |
| 18-12 | 51.26 | 113 |
| 18-10 | 50.8 | 112 |
| 18-8 | – | – |
| 20-18 | 77.11 | 170 |
| 20-16 | 76.66 | 169 |
| 20-14 | 76.2 | 168 |
| 20-12 | 75.75 | 167 |
| 20-10 | – | – |
| 20-8 | – | – |
| 22-20 | 84.37 | 186 |
| 22-18 | 82.55 | 182 |
| 22-16 | 78.47 | 173 |
| 22-14 | 73.94 | 163 |
| 22-12 | – | – |
| 22-10 | – | – |
| 24-22 | – | – |
| 24-20 | 90.72 | 200 |
| 24-18 | 88.45 | 195 |
| 24-16 | 86.18 | 190 |
| 24-14 | – | – |
| 24-12 | – | – |
| 24-10 | – | – |
| 26-24 | 125.19 | 276 |
| 26-22 | 123.38 | 272 |
| 26-20 | 114.76 | 253 |
| 26-18 | 109.77 | 242 |
| 26-16 | – | – |
| 26-14 | – | – |
| 26-12 | – | – |
| 28-26 | 135.62 | 299 |
| 28-24 | 130.63 | 288 |
| 28-22 | 113.4 | 250 |
| 28-20 | 119.75 | 264 |
| 30-28 | 146.06 | 322 |
| 30-26 | 140.61 | 310 |
| 30-24 | 135.62 | 299 |
| 30-22 | 129.27 | 285 |
| 30-20 | 124.28 | 274 |
Buy Duplex Pipe Fittings with required MTC and Third Party Inspection reports, Ask for a free sample now!
Available Types of DSS End Cap
Duplex Pipe Cap
Duplex End Cap
Duplex Steel Cap
DSS Welded Pipe Cap
Beveled Ends Pipe Cap, Duplex Steel, ANSI B16.9
ASTM A815 DSS Seamless Pipe End Cap, SCH 60, 14
Duplex End Cap Dimensions
| NPS | KG | LBS |
| 3/4-1/2 | 0.1 | 0.22 |
| 3/4-3/8 | 0.09 | 0.2 |
| 1-3/4 | 0.2 | 0.45 |
| 1-1/2 | 0.2 | 0.45 |
| 1.1/4-1 | 0.23 | 0.5 |
| 1.1/4-3/4 | 0.23 | 0.5 |
| 1.1/4-1/2 | 0.23 | 0.5 |
| 1.1/2-1.1/4 | 0.35 | 0.78 |
| 1.1/2-1 | 0.34 | 0.75 |
| 1.1/2-3/4 | 0.32 | 0.7 |
| 1.1/2-1/2 | 0.29 | 0.65 |
| 2-1.1/2 | 0.54 | 1.2 |
| 2-1.1/4 | 0.52 | 1.15 |
| 2-1 | 0.5 | 1.1 |
| 2-3/4 | 0.45 | 1 |
| 2.1/2-2 | 0.91 | 2 |
| 2.1/2-1.1/2 | 0.86 | 1.9 |
| 2.1/2-1.1/4 | 0.84 | 1.85 |
| 2.1/2-1 | 0.79 | 1.75 |
| 3-2.1/2 | 1.25 | 2.75 |
| 3-2 | 1.18 | 2.6 |
| 3-1.1/2 | 1.13 | 2.5 |
| 3-1.1/4 | 1.09 | 2.4 |
| 3.1/2-3 | 1.81 | 4 |
| 3.1/2-2.1/2 | 1.59 | 3.5 |
| 3.1/2-2 | 1.59 | 3.5 |
| 3.1/2-1.1/2 | 1.47 | 3.25 |
| 3.1/2-1.1/4 | 1.47 | 3.25 |
| 4-3.1/2 | 2.15 | 4.75 |
| 4-3 | 2.04 | 4.5 |
| 4-2.1/2 | 1.99 | 4.38 |
| 4-2 | 1.93 | 4.25 |
| 4-1.1/2 | 1.81 | 4 |
| 5-4 | 3.74 | 8.25 |
| 5-3.1/2 | 3.52 | 7.75 |
| 5-3 | 3.4 | 7.5 |
| 5-2.1/2 | 3.18 | 7 |
| 5-2 | 2.95 | 6.5 |
| 6-5 | 5.44 | 12 |
| 6-4 | 5.22 | 11.5 |
| 6-3.1/2 | 4.99 | 11 |
| 6-3 | 4.76 | 10.5 |
| 6-2.1/2 | 4.54 | 10 |
| 8-6 | 8.48 | 18.7 |
| 8-5 | 8.16 | 18 |
| 8-4 | 7.71 | 17 |
| 8-3.1/2 | 7.48 | 16.5 |
| 10-8 | 13.38 | 29.5 |
| 10-6 | 13.38 | 29.5 |
| 10-5 | 12.7 | 28 |
| 10-4 | 11.57 | 25.5 |
| 12-10 | 19.73 | 43.5 |
| 12-8 | 19.05 | 42 |
| 12-6 | 18.14 | 40 |
| 12-5 | 17.69 | 39 |
| 14-12 | 36.29 | 80 |
| 14-10 | 35.92 | 79.2 |
| 14-8 | 35.61 | 78.5 |
| 14-6 | 35.38 | 78 |
| 16-14 | 41.28 | 91 |
| 16-12 | 40.82 | 90 |
| 16-10 | 40.37 | 89 |
| 16-8 | 40.14 | 88.5 |
| 16-6 | – | – |
| 18-16 | 52.16 | 115 |
| 18-14 | 51.71 | 114 |
| 18-12 | 51.26 | 113 |
| 18-10 | 50.8 | 112 |
| 18-8 | – | – |
| 20-18 | 77.11 | 170 |
| 20-16 | 76.66 | 169 |
| 20-14 | 76.2 | 168 |
| 20-12 | 75.75 | 167 |
| 20-10 | – | – |
| 20-8 | – | – |
| 22-20 | 84.37 | 186 |
| 22-18 | 82.55 | 182 |
| 22-16 | 78.47 | 173 |
| 22-14 | 73.94 | 163 |
| 22-12 | – | – |
| 22-10 | – | – |
| 24-22 | – | – |
| 24-20 | 90.72 | 200 |
| 24-18 | 88.45 | 195 |
| 24-16 | 86.18 | 190 |
| 24-14 | – | – |
| 24-12 | – | – |
| 24-10 | – | – |
| 26-24 | 125.19 | 276 |
| 26-22 | 123.38 | 272 |
| 26-20 | 114.76 | 253 |
| 26-18 | 109.77 | 242 |
| 26-16 | – | – |
| 26-14 | – | – |
| 26-12 | – | – |
| 28-26 | 135.62 | 299 |
| 28-24 | 130.63 | 288 |
| 28-22 | 113.4 | 250 |
| 28-20 | 119.75 | 264 |
| 30-28 | 146.06 | 322 |
| 30-26 | 140.61 | 310 |
| 30-24 | 135.62 | 299 |
| 30-22 | 129.27 | 285 |
| 30-20 | 124.28 | 274 |
Types Of DSS Tee
Duplex Tee
Duplex Equal Tee
Duplex Reducing Tee
Duplex Unequal Tee
Seamless Equal Tee, DSS, 4 Inch, BW
DSS Equal Tee, ASTM A815, MSS SP-43
Tolerances for ASTM A815 180° Returns & Lap Joint Stub Ends
| NPS | DN | Lap Joint Stub Ends | 180° Return | ||||
|---|---|---|---|---|---|---|---|
| inch | mm | G | R | T | O | K | U |
| 1/2~2-1/2 | 15~65 | +0, -1 | +0, -1 | +1.6, -0 | ±6 | ±6 | ±1 |
| 3~3-1/2 | 80~90 | +0, -1 | +0, -1 | +1.6, -0 | ±6 | ±6 | ±1 |
| 4 | 100 | +0, -1 | +0, -2 | +1.6, -0 | ±6 | ±6 | ±1 |
| 5~8 | 125~200 | +0, -1 | +0, -2 | +1.6, -0 | ±6 | ±6 | ±1 |
| 10~18 | 250~450 | +0, -2 | +0, -2 | +3.2, -0 | ±10 | ±6 | ±2 |
| 20~24 | 500~600 | +0, -2 | +0, -2 | +3.2, -0 | ±10 | ±6 | ±2 |
Tolerance of DSS Fittings
| All Fittings | 90, 45 Elbows and Tees | Reducers | Caps | 180 Returns | Angularity Tolerance | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Pipe Size | Outside Diameter at Bevel | Inside Diameter at End | Wall Thickness | Center to End Dimension | Overall Length | Overall Length | Center to Center Dimension | Back to face Dimension | Alignment of Ends | Nominal Pipe Size | off Angle | off Plane |
| (in) | D | t | A.B.C.M | H | E | O | K | U | (in) | Q | P | |
| 1/2to 21/2 | +1.52-0.76 | 0.76 | Not Less Than 87.5% of Nominal Thickness | 1.52 | 1.52 | 3.05 | 6.35 | 6.35 | 0.76 | 1/2to 4 | 0.76 | Tolerance of DSS Fittings1.51 |
| 3 to 31/2 | 1.52 | 1.52 | 1.52 | 1.52 | 3.05 | 6.35 | 6.35 | 0.75 | 5 to 8 | 1.52 | 3.05 | |
| 4 | 1.52 | 1.52 | 1.52 | 1.52 | 3.05 | 6.35 | 6.36 | 0.76 | 10 to 12 | 2.29 | 4.83 | |
| 5 to 8 | +2.29-1.52 | 1.52 | 1.52 | 1.52 | 6.35 | 6.35 | 6.35 | 0.76 | 14 to 16 | 2.29 | 6.35 | |
| 10 to 18 | +4.06-3.05 | 3.05 | 2.29 | 2.29 | 6.35 | 9.65 | 6.35 | 1.52 | 18 to 24 | 3.05 | 9.65 | |
| 20 to 24 | +6.35-4.83 | 4.83 | 2.29 | 2.29 | 6.35 | 9.65 | 6.35 | 1.52 | 26 to 30 | 4.83 | 9.65 | |
| 26 to 30 | +6.35-4.83 | 4.83 | 3.05 | 4.83 | 9.65 | – | – | – | 32 to 36 | 4.83 | 12.7 | |
| 32 to 36 | +6.35-4.83 | 4.83 | 4.83 | 4.83 | 9.65 | – | – | – | ||||
SA815 DSS Fittings Equivalent Length Chart
| Fittings | Rigid PVC/HDPE e = 0.005 mm | Commercial Steel e = 0.05 mm | GRP/FRP e = 0.02 mm | Spiral Weld Steel e = 0.1 mm |
|---|---|---|---|---|
| Threaded bends | ||||
| 90� elbow, r/d=1 | 37 | 30 | 34 | 26 |
| 45� elbow, r/d=1 | 20 | 16 | 18 | 14 |
| Welded bends | ||||
| 90� elbow, sharp bend | 69 | 55 | 63 | 49 |
| 90� elbow, r/d=1 | 23 | 19 | 21 | 16 |
| 90� elbow, r/d=1.5 | 17 | 13 | 15 | 12 |
| 90� elbow, r/d=2 | 14 | 11 | 13 | 10 |
| 45� elbow, sharp bend | 22 | 18 | 20 | 16 |
| 45� elbow, r/d=1 | 17 | 14 | 16 | 12 |
| 45� elbow, r/d=1.5 | 12 | 9.4 | 11 | 8.3 |
| Threaded tees | ||||
| Tee, straight through | 25 | 20 | 23 | 18 |
| Tee, through branch | 75 | 60 | 68 | 53 |
| Welded tees | ||||
| Tee, square, straight through | 0 | 0 | 0 | 0 |
| Tee, square, through branch | 87 | 70 | 79 | 61 |
| Tee, radiused, straight through | 13 | 10 | 12 | 9 |
| Tee, radiused, through branch | 72 | 57 | 65 | 50 |
SA815 DSS Fittings Equivalent Length Chart
Machining DSS Fittings is tough due to its great strength. For example, cutting 2205 is about 20% slower than machining 304.
The following rules can help you improve your machining:
- The cutting edges must remain razor-sharp. Excessive work hardening is caused by dull edges.
- Light cuts should be made, but they should be deep enough to prevent work hardening by riding on the material's surface.
- Heat concentrates at the cutting edges due to austenitic metals' low thermal conductivity.
What is radius size for ASME SA 815 long radius elbow?
The radius of curvature of a DSS long radius elbow is 1.5 times the nominal diameter. The radius of curvature of a typical elbow is 1.0 times the pipe’s nominal diameter. ASME SA 815 short elbows provide more frictional resistance to the fluid than DSS long radius elbows.
DSS Fittings Weldability
The weldability of DSS fittings is generally good, and they may be welded using most of the same welding techniques as austenitic stainless steels:
- Resistance welding
- High-frequence welding
- Gas metal arc welding MIG (GMAW)
- Flux-cored arc welding (FCW)
- Plasma arc welding (PAW)
- Shielded metal arc welding (SMAW)
- Gas tungsten arc welding TIG (GTAW)
- Laser welding
- Submerged arc welding (SAW)
Duplex Steel Pipe Fittings Selection Criteria
- Construction materials: Pipe fittings must be compliant with the service and temperature. In most cases, the material chosen is the same as the pipe material.
- End Connection: Before purchasing any pipe fitting, the customer must be informed of the various end connection types.
- Pipe Fittings Types: Pipe fittings are also classified according to their type, such as threaded or slip, male or female. As a result, it is the buyer's responsibility to select the proper pipe fitting.
- Pipe Fitting Size: Before choosing a fitting, it's important to know how big it is. The pipe fitting size is usually determined by the OD or ID of the connecting pipe.
- Schedule or Thickness: Pipe fittings, like pipes, come in a variety of thickness ranges. As a result, the thickness of the pipe must be determined before choosing a pipe fitting.
- Pressure Rating : When choosing a pipe fitting, it's also necessary to consider the internal pressure.
Application of ASTM A815 DSS Buttweld Fittings
- Refinery
- Power
- Oil and Gas
- Marine & dredging
- Food, Beverage
- Pulp and Paper
- Chemical Industry
- Petrochemical
ASME SA 815 DSS Welded Fittings Inspection and Testing
- PMI Testing
- Flaring Test
- Hardness Test
- Micro and Macro Test
- Pitting Resistance Test
- Thermal stability test
- Chemical Analysis
- Flattening Test
Refer Below Places Where We have Supplied Duplex Fittings
Petrochemical Corporation Of Singapore
Ras Laffan Common Cooling Sewater System -
