BUTTWELDED ELBOW

A buttwelded Elbow is designed to be welded on site at its ends to connect pipes together and allow change in direction or pipe diameter or branching or ending. This fitting then becomes part of a system for transporting fluids (oil, gas, steam, chemicals & etc.) in a safe and efficient manner, over short or long distances. Elbows are split into two groups Long and Short Radius which define the distance over which they change direction; the centre line of one end to the opposite face. This is known as the "centre to face" distance and is equivalent to the radius through which the elbow is bent. The centre to face distance for a "long" radius elbow, abbreviated LR always is "1½ x Nominal Pipe Size (NPS) (1½D)", while the centre to face distance for a "short" radius elbow, abbreviated SR even is to nominal pipe size.

SPECIFICATIONS

Butt-welded Type

Butt-welded Fitting Elbow Standard

Type of Elbow

45°, 90° & 180°

Size

1/2"NB TO 48"NB

Grades

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

Carbon Steel

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

Alloy Steel

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

Duplex Steel

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

Schedule

SCH20
SCH30
SCH40
STD
SCH80
XS
SCH60
SCH80
SCH120
SCH140
SCH160
XXS

Type

Seamless
ERW
Welded
Fabricated

Applications

Welding a fitting to the pipe means it is permanently leakproof
The continuous metal structure formed between pipe and fitting adds strength to the system
Smooth inner surface and gradual directional changes reduce pressure losses and turbulence and minimize the action of corrosion and erosion
A welded system utilizes a minimum of space