An elbow is the pipe fittings that are used extensively as a form of connections in between two lengths of pipes for the purpose of producing the change into the flow direction into the pipe, at the angle of 180 deg, 90 deg or 45 deg. Elbow pipe fitting is also called as the bend that is available in the ranges of materials including alloy steel, carbon steel, stainless steel, nickel alloy, super duplex, duplex, and cupro-nickel, etc. 180° Long Radius Elbow is also termed as the return bend that permits the complete reversal of the flow. The distance in between the center line and end of the elbow is 3 x NPS.
Some qualities of it are High mechanical strength rugged construction, Smoothness in surface finishes, Perfect dimensional accuracy, Anti-corrosive body, and Pitting and oxidation resistance.
180 DEGREE LONG RADIUS ELBOW SPECIFICATIONS
| बाहिरी व्यास (OD) | Seamless 180° Long Radius Elbow (1/2″~24″), ERW / Fabricated Elbow / Welded (1/2″~48″) |
| मानकहरू | ANSI – B 16.9,ASTM A403 – ASME SA403 – ‘Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings’API 590-605,ASME B16.9 – ‘Factory-Made Wrought Buttwelding Fittings”,ASME B16.25 – ‘Buttwelding Ends’,ASME B16.28 – ‘Wrought Steel Buttwelding Short Radius Elbows and Returns’,MSS SP-43 – ‘Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications’ |
| आयामहरू | ASME/ANSI B16.9, MSS-SP-43 प्रकार A, MSS-SP-43 प्रकार B, JIS B2312, JIS B2313, ASME B16.28 |
| तालिका | तालिका ५S, १०S, २०S, १०S, २०S, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS र अन्य।. |
| वक्रता त्रिज्या | R=1D – 10D, 15D, 20D |
| बाट | 180° Long Radius Elbow, Butt weld 180° Long Radius Elbow. |
| सामग्रीहरू | ३०४/एल/एच/एलएन, ३१६/एल/एच/एलएन/टिआई, ३२१/एच, ३१७/एल/एलएन, 347/H, 310S/H, N08904(904L), S31803,S32205, S32750, S32760, N02200, N02201, N04400, N06600, N06690, N06625, N06985(G3), N08028, N08800, N08810, N08811, N08825सर्फेस, मोनेल, निकल, इनकोनेल, ह्यास्टलोय, टाइटेनियम, ट्यान्टलम, स्टेनलेस स्टील, मिश्र इस्पात, कार्बन स्टील, कूप्रो-निकल ९०/१० र ७०/३०, स्टेनलेस स्टील ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| प्रकार | बट वेल्ड (BW) / वेल्ड गरिएको / ERW / निर्माण गरिएको |
| एसएस गलनाङ्कहरू | १४००–१४५०°C (WP304, WP304L), १३९०–१४४०°C (WP316L), १३७०–१४००°C (WP316) |
180 DEGREE LONG RADIUS ELBOW – MATERIALS & GRADES
| Stainless Steel Buttweld 180 Degree Long Radius Elbow | ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| Duplex & Super Duplex Steel Buttweld 180 Degree Long Radius Elbow | ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. वर्कस्टोफ नं. 1.4462 |
| Carbon Steel Buttweld 180 Degree Long Radius Elbow | ASTM A234, ASME SA234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 र WPHY 70।. |
| Low Temperature Carbon Steel 180 Degree Long Radius Elbow | ASTM A420 WPL3, A420 WPL6 |
| Alloy Steel Buttweld 180 Degree Long Radius Elbow | ASTM / ASME A/SA 234 ग्रेड WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91 |
| Nickel Alloy Buttweld 180 Degree Long Radius Elbow | ASTM B336, ASME SB336, निकेल 200 (UNS नं. N02200), निकेल 201 (UNS नं. N02201), मोनेल 400 (UNS नं. N04400), मोनेल ५०० (UNS नं. N05500), इनकोनेल ८०० (UNS नं. N08800), इनकोनेल ८२५ (UNS नं. N08825), इनकोनेल ६०० (UNS नं. N06600), इनकोनेल ६२५ (UNS नं. N06625), इनकोनेल ६०१ (UNS नं. N06601), Hastelloy C 276 (UNS नं. N10276), एलोय २० (UNS नं. N08020), टाइटेनियम (ग्रेड I र II), कूप्रो-निकेल ७०/३०, CuNi10Fe1Mn, CuNi30Mn1Fe।. |
Buttweld 180 Deg Long Radius Elbows Application Industries
- पेट्रोकेमिकल उद्योग
- रसायन उद्योग
- तेल र ग्यास उद्योग
- पल्प तथा कागज उद्योग
- विद्युत गृह उद्योग
- खाद्य प्रशोधन उद्योग
- औषधि उद्योग
- ऊर्जा उद्योग
- एयरोस्पेस उद्योग
DIMENSIONS OF 180 DEGREE LONG RADIUS ELBOW – ANSI 16.9

ASME B16.9 Buttweld 180° Short Radius Elbow Dimensions Drawing
| नाम मात्रको पाइप आकार | बाहिरी व्यास बिवलमा | Center to Center | Back to Faces | ||||
| 180° Return | |||||||
| P | K | ||||||
| डीएन | INCH | श्रृंखला क | श्रृंखला बी | LR | LR | ||
| 15 | 1/2 | 21.3 | 18 | 76 | 48 | ||
| 20 | /4 | 26.9 | 25 | 76 | 51 | ||
| 25 | 1 | 33.7 | 32 | 76 | 56 | ||
| 32 | 11/4 | 42.4 | 38 | 95 | 70 | ||
| 40 | 11/2 | 48.3 | 45 | 114 | 83 | ||
| 50 | 2 | 60.3 | 57 | 152 | 106 | ||
| 65 | 21/2 | 76.1(73) | 76 | 191 | 132 | ||
| 80 | 3 | 88.9 | 89 | 229 | 159 | ||
| 90 | 31/2 | 101.6 | – | 267 | 184 | ||
| 100 | 4 | 114.3 | 108 | 305 | 210 | ||
| 125 | 5 | 139.7 | 133 | 381 | 262 | ||
| 150 | 6 | 168.3 | 159 | 457 | 313 | ||
| 200 | 8 | 219.1 | 219 | 610 | 414 | ||
| 250 | 10 | 273.0 | 273 | 762 | 518 | ||
| 300 | 12 | 323.9 | 325 | 914 | 619 | ||
| 350 | 14 | 355.6 | 377 | 1067 | 711 | ||
| 400 | 16 | 406.4 | 426 | 1219 | 813 | ||
| 450 | 18 | 457.2 | 478 | 1372 | 914 | ||
| 500 | 20 | 508.0 | 529 | 1524 | 1016 | ||
| 550 | 22 | 559 | – | · 180 Degree Elbows – It is used when change in the direction of pipe required is 180° · L/R – Long radius | |||
| 600 | 24 | 610 | 630 | ||||
| 650 | 26 | 660 | – | ||||
| 700 | 28 | 711 | 720 | ||||
| 750 | 30 | 762 | – | ||||
| 800 | 32 | 813 | 820 | ||||
| 850 | 34 | 864 | – | ||||
| 900 | 36 | 914 | 920 | ||||
| 950 | 38 | 965 | – | ||||
| 1000 | 40 | 1016 | 1020 | ||||
| 1050 | 42 | 1067 | – | ||||
| 1100 | 44 | 1118 | 1120 | ||||
| 1150 | 46 | 1168 | – | ||||
| 1200 | 48 | 1220 | 1220 | ||||
DIMENSIONAL TOLERANCES OF 180 DEGREE LONG RADIUS ELBOW – ASME B16.9
| For all Pipe Fittings | 180° Returns | |||||
| नाममात्र पाइप आकार (NPS) | भित्ताको मोटाइ टी / टी१ | बाहिर Ø बिवलमा | भित्र Ø अन्तमा | Back to Face Dim. K | Center to Center Dim. O | Align- ment of Ends U |
| १/२ देखि २ १/२ सम्म | होइन | 1 | 0,8 | 7 | 7 | 1 |
| तीन ए ३ १/२ | कम | 1 | 1,6 | 7 | 7 | 1 |
| 4 | भन्दा | +2 -1 | 1,6 | 7 | 7 | 1 |
| ५ र ६ | 87,50% | +3 -1 | 1,6 | 7 | 7 | 1 |
| 8 | नाम मात्रको | 2 | 1,6 | 7 | 7 | 1 |
| 10 | बाक्लोपन | +4 -3 | 3,2 | 7 | 7 | 2 |
| १२ र १८ | 3,2 | +4 -3 | 7 | 10 | 2 | |
| २० देखि २४ | 4,8 | +6 -5 | 7 | 10 | 2 | |
| २६ देखि ३० | 4,8 | +7 -5 | ….. | ….. | ….. | |
| ३२ र ४८ | 4,8 | +7 -5 | ….. | ….. | ….. | |
ASME B16.9 180° Long Radius Elbow Angularity Tolerance
| एनडी | अधिकतम कोण | मैक्स अफ प्लेन |
| Q | P | |
| १/२ ए ४ | 1 | 2 |
| ५ देखि ८ | 2 | 4 |
| १० देखि १२ | 3 | 5 |
| १४ र १६ | 3 | 7 |
| १८ देखि २४ | 4 | 10 |
| २६ देखि ३० | 5 | 10 |
| ३२ देखि ४२ | 5 | 13 |
| ४४ देखि ४८ | 5 | 20 |
WEIGHT CHART OF 180° DEGREE LONG RADIUS ELBOW
| राष्ट्रिय निकुञ्ज सेवा इन्चहरू | ELBOWS LR 180° | |||
| तालिका. ५एस | तालिका. दश एस | तालिका. चालीस | तालिका. ८० को दशक | |
| 1/2 | 0.05 | 0.06 | 0.08 | 0.10 |
| 3/4 | 0.06 | 0.07 | 0.09 | 0.11 |
| 1 | 0.09 | 0.15 | 0.18 | 0.20 |
| 1 1/4 | 0.13 | 0.20 | 0.25 | 0.35 |
| 1 1/2 | 0.18 | 0.30 | 0.40 | 0.50 |
| 2 | 0.30 | 0.50 | 0.70 | 0.90 |
| 2 1/2 | 0.60 | 0.85 | 1.35 | 1.80 |
| 3 | 0.90 | 1.30 | 2.00 | 2.90 |
| 4 | 1.40 | 2.00 | 4.00 | 5.90 |
| 5 | 2.90 | 3.60 | 6.50 | 9.70 |
| 6 | 4.00 | 5.00 | 10.5 | 16.0 |
| 8 | 7.40 | 10.0 | 21.5 | 33.5 |
| 10 | 13.6 | 16.8 | 38.5 | 52.5 |
| 12 | 23.4 | 27.0 | 59.0 | 79.0 |
| 14 | 29.0 | 35.0 | 70.0 | 94.0 |
| 16 | 41.3 | 47.0 | 95.0 | 125 |
| 18 | 51.8 | 59.0 | 120 | 158 |
| 20 | 73.0 | 85.0 | 146 | 194 |
| 24 | 122 | 140 | 210 | 282 |
| अनुमानित तौल किलोग्राममा, घनत्व ८ किलोग्राम प्रति घन सेन्टिमिटर | ||||
AVAILABLE TYPES OF 180 DEGREE LONG RADIUS ELBOW
| Buttweld 180° Long Radius Elbow | Duplex Steel Buttweld 180° Long Radius Elbow |
| ASME B16.9 Butt weld 180° Long Radius Elbow | High Nickel Alloy 180° Long Radius Elbow |
| Stainless Steel 180° Long Radius Elbow | SS 180° Long Radius Elbow |
| High Quality 180° Long Radius Elbow | Seamless Butt weld 180° Long Radius Elbow |
| Welded Butt weld 180° Long Radius Elbowr | ASME B16.28 Buttweld 180° Long Radius Elbow |
| Carbon Steel 180° Long Radius Elbow | ANSI B16.9 Buttweld 180° Long Radius Elbow |
| Titanium Buttweld 180° Long Radius Elbow | Inconel Butt weld 180° Long Radius Elbow |
| ASTM A403 Stainless Steel 180° Long Radius Elbow | Butt Weld B16.9 180° Long Radius Elbow |
| Super Duplex Steel Buttweld 180° Long Radius Elbow | Copper Nickel 180° Long Radius Elbow |
| Steel 180° Long Radius Elbow | Hastelloy 180° Long Radius Elbow |
वेन्झोउ काइक्सिन काइक्सिन मेटल कं., लि.








