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Long Radius Short Radius Band Elbow Nickel Alloy Pipe Fittings Inconel 625

Brand Name:HT

Certification:ISO9001

Model Number:Long Radius Short Radius Band Elbow Inconel 625 Nickel Alloy Pipe Fittings

Minimum Order Quantity:1 pcs

Delivery Time:30-35 working days

Payment Terms:L/C,T/T, Western Union

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Zhengzhou Huitong Pipeline Equipment Co.,Ltd.

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Location: Zhengzhou Henan China

Address: Room 1703, 17th Floor, Building 5, Jinyin Modern City, Guangdian South Road, Jinshui District, Zhengzhou City, Henan Province, China.

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Product Details

Long Radius Short Radius Band Elbow Inconel 625 Nickel Alloy Pipe Fittings

1.What’s the difference between LR elbow and SR elbow?

Both long radius and short radius elbows can be used to connect pipes and also have the same inner and outer diameter, angle and wall thickness. But you don't seem to see any difference from their because of its similar appearance. In previous article,we introduced where to buy DIN 2605 elbows,Today I will introduce their differences of LR elbow and SR elbow.

Elbows are divided into two groups which define the distance over which they change direction: the center line of one end to the opposite face. This is known as the "center to face" distance and is equivalent to the radius through which the elbow is bent.

The center to face distance for a "long" radius elbow, the LR radius elbows have a center to end distance that is 1.5 times the NPS in inches(R=1.5D),while the SR radius is equal to the NPS in inches(R=1.0D). The 45, 90°and 180°elbows, all three in the "long radius" version, and in addition the 90° and 180° elbows both in the "short radius" version.

Dimensions, dimensional tolerances etc. for long and short radius elbows are defined in ASME B16.9.ASME B16.9 standardizes the center to face dimensions and some "squareness" dimensional tolerances.

Take the 180° LR & SR NPS 6 Butt Weld Elbows according to ASME B16.9 Dimensions for example:

NPS

O. D.

(D)

180° Long Rad

180° Short Rad

Center to Center

Back to Face(K)

Center to Center(O)

Back to Face(K)

168.3

457

313

305

237

LR or SR elbow to use?

1.The short radius elbow is used in tight areas, while the long radius is used under normal working conditions.

2.The long radius elbow is better than short radius elbow when it is scoured and worn.

3.The position of the two elbows should be determined according to the practical conditions, because the positions are necessary.

2.Dimensions Butt Weld Elbows 45°-90° LR and 3D ASME B16.9

NPS	O.D. D	90° Long Rad Center to End A	45° Long Rad Center to End B	90° 3D Center to End A	45° 3D Center to End B
1/2	21.3	38	16
3/4	26.7	38	19	57	24
1	33.4	38	22	76	31
1.1/4	42.2	48	25	95	39
1.1/2	48.3	57	29	114	47
2	60.3	76	35	152	63
2.1/2	73	95	44	190	79
3	88.9	114	51	229	95
3.1/2	101.6	133	57	267	111
4	114.3	152	64	305	127
5	141.3	190	79	381	157
6	168.3	229	95	457	189
8	219.1	305	127	610	252
10	273	381	159	762	316
12	323.8	457	190	914	378
14	355.6	533	222	1067	441
16	406.4	610	254	1219	505

NPS	O.D. D	90° Long Rad Center to End A	45° Long Rad Center to End B	90° 3D Center to End A	45° 3D Center to End B
18	457	686	286	1372	568
20	508	762	318	1524	632
22	559	838	343	1676	694
24	610	914	381	1829	757
26	660	991	406	1981	821
28	711	1067	438	2134	883
30	762	1143	470	2286	946
32	813	1219	502	2438	1010
34	864	1295	533	2591	1073
36	914	1372	565	2743	1135
38	965	1448	600	2896	1200
40	1016	1524	632	3048	1264
42	1067	1600	660	3200	1326
44	1118	1676	695	3353	1389
46	1168	1753	727	3505	1453
48	1219	1829	759	3658	1516

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer.

Dimensional Tolerances of Butt Weld Elbows - 45° and 90° - LR and 3D - ASME B16.9 -

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8
Outside Diameter at Bevel (D)	+ 1.6 - 0.8	1.6	1.6	+ 2.4 - 1.6
Inside Diameter at End	0.8	1.6	1.6	1.6
Center to End LR (A/B)	2	2	2	2
Center to End 3D (A/B)	3	3	3	3
Nominal Pipe Size	10 to 18	20 to 24	26 to 30	32 to 48
Outside Diameter at Bevel (D)	+ 4 - 3.2	+ 6.4 - 4.8	+ 6.4 - 4.8	+ 6.4 - 4.8
Inside Diameter at End	3.2	4.8	+ 6.4 - 4.8	+ 6.4 - 4.8
Center to End LR (A/B)	2	2	3	5
Center to End 3D (A/B)	3	3	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.

Note:
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 - NPS 24. Except with regard to the outside diameter at the bevel.

Company Profile

Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fittings for Huitong Group and assisting another subsidiary company of Huitong Group:Zhengzhou Huitong Machanical Equipment Co.,Ltd., in exporting machanical equipment.

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.,with the strong support of Huitong Group,and years'development and innovation, are more and more professional in technical service and can manufacure products with all kinds of material,shape and size. Especially in elbows, tee, reducer, flange and pipe cap etc., we have gained more than 20 product patent, and hundreds of technology patent. Also,we have gradually taken an ireplacable role in High-pressure,high-temperature and anti-corrosion area. With the continuous construction of engery in China,such as petrol gas,electric power,etc.,our company has become the purchasing center of whole set fittings for such projects.In 2009,a foreign trade team established,is manily engaged in oil gas and electric power projects abroad.By now, our products have been exported to

Canada,Malaysia,Parkistan,UAE, Eygpt,the Middle East countries, etc.. We have passed the qualification of ISO9001:2000 and API quality certification system. High-quality products and high-class service are well received by abroad customers in this industry. The unique diversified production line can offer you one-package serive, you can pruchase all complex products from us at one time. What's more, our sufficient material stock and conventional product stock can ensure you receive satisfied product in the shortest time.

With powerful financial strength,advanced managerial concept, excellent marketing service,strict quality control system and integrated marketing team,we would like to develop together with you hand in hand. Adhering to the operation principle of "faith first and clients foremost", we always supply high quality products, complete after-sales service and favorable prices. We sincerely hope to establish long-term cooperation with you on the basis of mutual benefits, reciprocity and common development.