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[China]
Address: Room 703, Land Center T2, YanZhan Road, No.1111, QuJiang New District, Xi'an China
Contact name:Rachel Zhang
Xi'an Longjoy Foreign Trade Co.,Ltd |
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Butt welding flange is a kind of pipe fittings, which refers to the flange with neck and pipe transition and butt welding connection with pipe. It is not easy to deform, well sealed and widely used. It has corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. The distance between the welding junction and the joint surface is large, and the joint surface is free from welding temperature deformation.
The butt welding flange adopts a relatively complex mouthpiece structure, which is suitable for the pipeline with large fluctuation of pressure or temperature or high temperature, high pressure and low temperature. It is generally used for the connection of pipeline and valve with PN greater than 2.5MPa, and also used for the pipeline conveying expensive, flammable and explosive media.
Flange outer diameter: 75mm-2190mm
Diameter of bolt hole center circle: 50 mm --- 2130 mm
Bolt hole diameter: 11mm-30mm
Number of bolt holes: 4-48
Thread: m10-m27
Flange thickness: 12mm-58mm
Pipe outer diameter: a (17.2-2032mm) B (14-2020mm)
Flange inner diameter: a (18-2036mm) B (15-2024mm)
Theoretical weight of flange: 0.36kg-234.6kg (DN 1800)
1. Carbon steel and austenitic stainless steel forgings with nominal pressure PN of 0.25mp-1.0mpa for butt welding flange. Grade I forgings are allowed.
2. In addition to the following provisions, forgings with nominal pressure PN of 1.6mpa-6.3mpa shall meet the requirements of grade II or above.
3. If one of the following conditions is met, it shall meet the requirements of III and Forgings:
(1) Flange forgings with nominal pressure PN ≥ 10.0MPa;
(2) Chromium molybdenum steel forgings with nominal pressure PN > 4.0Mpa;
(3) Ferritic steel forgings with nominal pressure PN > 1.6Mpa and working temperature ≤ - 20 ℃.
Stainless Steel Flanges Butt welding flange technical data sheet as below:
| Butt welding flange | |||||||||||||||||
| DN | Outer diameter of steel pipe | Connection size | Flange thickness | Inside diameter of flange B1 | Socket | Flange neck | height | Theoretical weight | |||||||||
| Flange outer diameter | Diameter of bolt hole center circle | Bolt hole diameter | Number of bolt holes | thread | B2 | U | N | R | |||||||||
| A | B | A | B | A | B | ||||||||||||
| 10 | 17.2 | 14 | 100 | 70 | 14 | 4 | M12 | 20 | 11.5 | 9 | 18 | 15 | 9 | 34 | 3 | 26 | 1.14 |
| 15 | 21.3 | 18 | 105 | 75 | 14 | 4 | M12 | 20 | 16 | 12 | 22 | 19 | 10 | 38 | 3 | 26 | 1.26 |
| 20 | 26.9 | 25 | 130 | 90 | 18 | 4 | M16 | 20 | 21 | 19 | 27.5 | 26 | 11 | 48 | 4 | 29 | 1.93 |
| 25 | 33.7 | 32 | 140 | 100 | 18 | 4 | M16 | 24 | 26.5 | 26 | 34.5 | 33 | 13 | 52 | 4 | 32 | 2.43 |
| 32 | 42.4 | 38 | 155 | 110 | 22 | 4 | M20 | 24 | 35 | 30 | 43.5 | 39 | 14 | 64 | 5 | 32 | 3.17 |
| 40 | 48.3 | 45 | 170 | 125 | 22 | 4 | M20 | 26 | 41 | 37 | 49.5 | 46 | 16 | 74 | 5 | 34 | 3.88 |
| 50 | 60.3 | 57 | 180 | 135 | 22 | 4 | M20 | 26 | 52 | 49 | 61.5 | 59 | 17 | 86 | 5 | 38 | 4.61 |
a. Plastic bubble bag package b.Wove bag package c.Pallet d. Customized.
Our Steel flat factory have high ability for production, the delivery time is 30 days for small quantity, or if you are hurry for that, we can arrange and meet your shipping date.
