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Bend

Keywords: Pipe Bend, Steel Pipe Bend, Hot Bend, Induction Bend, Induction Hot Bend
Size: NPS from 1/2'' to 72'', DN from 15 to 1800,WT: <120mm, SCH 40/80/XXS
Material: Carbon Steel --- API 5L, ASME B16.49, EN 10218 ;Alloy Steel --- ASTM A234;Stainless Steel --- ASTM 312/403 304/304L/316/316L/613Ti/321/317L/310S
Bend Radius: 2.5D/3D/4D/5D/6D/7D/8D/9D/10D
Bend Angle: 15/30/45/60/90/135/180 deg
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Delivery: BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)
Payment: TT, LC , OA , D/P
Packing: Packed in Wood Cabins/Wood Tray
Usage: For conveying gas, water and oil either in the oil or natural gas industries

Bend tubing:

Tube bending is the umbrella term for metal forming processes used to permanently form pipes or tubing. One must differentiate between form-bound and free form-bending procedures, as well as between heat supported and cold forming procedures.


Processes:

Press bending:

Press bending is probably the first bending process used on cold pipes and tubing

Rotary draw bending:

Full tooling for rotary draw bending

Rotary draw bending (RDB) is a precise technology, since it bends using tooling or “die sets” which have a constant center line radius (CLR), alternatively indicated as mean bending radius (Rm).


Roll bending

During the roll bending process the pipe, extrusion, or solid is passed through a series of rollers (typically three) that apply pressure to the pipe gradu


For Wrought Product (WP) Dimension is covered in

ASME B16.9- which is standard for Factory-made Wrought Butt-welding Fittings for size NPS 1⁄₂ to NPS 48” and

And B16.28- which is standard for Wrought Steel Butt-Welding Short Radius Elbows and Returns for size NPS 1⁄₂ to NPS 24”

NOMINAL PIPE SIZE OUTSIDE DIAMETER BACK TO FACE CENTER TO CENTER
Inch. OD A B C D
1/2 21.3 48 76
3/4 26.7 43 57
1 33.4 56 41 76 51
1 1/4 42.2 70 52 95 64
1 1/2 48.3 83 62 114 76
2 60.3 106 81 152 102
2 1/2 73 132 100 191 127
3 88.9 159 121 229 152
3 1/2 101.6 184 140 267 178
4 114.3 210 159 305 203
5 141.3 262 197 381 254
6 168.3 313 237 457 305
8 219.1 414 313 610 406
10 273.1 518 391 762 508
12 323.9 619 467 914 610
14 355.6 711 533 1067 711
16 406.4 813 610 1219 813
18 457.2 914 686 1372 914
20 508 1016 762 1524 1016
22 559 1118 838 1676 1118
24 610 1219 914 1829 1219


Pipe Fittings Dimensions Tolerance as per ASME B16.9


NOMINAL PIPE SIZE ALL FITTINGS ALL FITTINGS ALL FITTINGS ELBOWS AND TEES 180 DEG RETURN BENDS 180 DEG RETURN BENDS 180 DEG RETURN BENDS REDUCERS CAPS
NPS O.D. at Bevel (1), (2) I.D. at End
(1), (3), (4)
Wall Thickness (3) Centre-to-End Dimension A,B,C,M Centre-to-Centre O Back-to-Face K Alignment of Ends U Overall Length H Overall Length E
½ to 2½ 0.06
-0.03
0.03 Not less than 87.5% of nominal thickness 0.06 0.25 0.25 0.03 0.06 0.12
3 to 3 ½ 0.06 0.06 Not less than 87.5% of nominal thickness 0.06 0.25 0.25 0.03 0.06 0.12
4 0.06 0.06 Not less than 87.5% of nominal thickness 0.06 0.25 0.25 0.03 0.06 0.12
5 to 8 0.09
-0.06
0.06 Not less than 87.5% of nominal thickness 0.06 0.25 0.25 0.03 0.06 0.25
10 to 18 0.16
-0.12
0.12 Not less than 87.5% of nominal thickness 0.09 0.38 0.25 0.06 0.09 0.25
20 to 24 0.25
-0.19
0.19 Not less than 87.5% of nominal thickness 0.09 0.38 0.25 0.06 0.09 0.25
26 to 30 0.25
-0.19
0.19 Not less than 87.5% of nominal thickness 0.12 0.19 0.38
32 to 48 0.25
-0.19
0.19 Not less than 87.5% of nominal thickness 0.19 0.19 0.38 


Nickel Alloy

ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C 276 )


Stainless Steel

ASTM / ASME SA 403 GR WP “S” / “W” / ” WX” 304 , 304L, 304H, 304N, 304LN, 309, 310H, 316, 316H, 317, 317L, 321, 321H, 347, 347 H.


Duplex Steel

ASTM / ASME SA 815 UNS NO.S 31803, S 32205, S 32550, S 32750, S 32760.


Carbon Steel

ASTM / ASME A 234 WPB, WPC ASTM / ASME A 860 WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.


Alloy Steel

ASTM / ASME A 234 WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 23, WP 91.

Chemical Composition ContentMechanical Properties
Material NOCMnSiSPCrMoNiTensile strengthYield strengthElongation
A234 WPB0.30.29-1.060.10.0580.05///415-58524030
A234 WP50.150.60.50.040.034-60.44-0.65/415-58520520
A403 WP3040.08210.0400.03018-20/ 8-1151520530
A403 WP316L0.03210.0450.0316-182-3 10-1548517030
WPHY600.201-1.450.15-0.40.0150.030///515415/



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