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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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Carbon Weldolet is also called branch pipe seat, saddle and saddle type pipe joint. It is mainly used for reinforcing pipe fittings of branch connection instead of branch connection types such as reducing tee, reinforcing plate and reinforcing pipe section. The Carbon Weldolet has the outstanding advantages of safety, reliability, cost reduction, simple construction, improvement of medium flow channel, series standardization, and convenient design and selection.
Especially in the high pressure, high temperature, large diameter and thick wall pipelines, which is increasingly used to replace the traditional branch pipe connection method. The main body of the Weldolet is made of high-quality forgings with the same material as the pipe, including carbon steel, alloy steel, stainless steel, etc. Weldolet and main pipe are welded, and there are three types of connection with Olet or other pipes (such as short pipe, plug, etc.), instrument and valve: butt welding connection, socket welding connection and threaded connection.
Butt welding Weldolet is a branch pipe which is widely used in foreign countries in recent years. It provides a branch from large-diameter pipe to small-diameter pipe.The pipe welded on the branch is called the main pipe, and the pipe welded on the branch is called the branch pipe. Branch connections are full size, type, bore, and pressure rating. The material can be stainless steel, chrome molybdenum alloy or other alloy materials. Working principle of carbon steel butt welding branch pipe: the joint is directly cut into the pipe and sealed by locking the opposite side with screw thread. It does not need to be welded when it is connected with steel pipe, which is conducive to fire prevention, explosion prevention and high-altitude operation. And can eliminate the malpractice brought by welding carelessness.
Standard: MSS sp-97, GB / t19326
Material: carbon steel
Size range: DN 8-900
Pressure range: 3000 × 6000 × 3
Thickness: STD, XS, SCH160
Surface treatment: anti-oil; anti-painting
| Carbon Butt Weldolet dimensions | ||||||||||||
| Nominal diameter of main pipe | Nominal diameter of branch pipe | Pressure grade | ||||||||||
| L | Dl/niin | E | ||||||||||
| DN | NPS | DN | NPS | STD | XS | SCH160 | STD | XS | SCH160 | STD | XS | SCH160 |
| 8~900 | 1/4~36 | 6 | 1/8 | 16 | 16 | - | 24 | 24 | - | 15.9 | - | - |
| 10~900 | 3/8~36 | 8 | 1/4 | 16 | 16 | - | 26 | 26 | - | 15.9 | - | - |
| 15~900 | 1/2~36 | 10 | 3/8 | 19 | 19 | - | 30 | 30 | - | 19.1 | - | - |
| 20~900 | 3/4~36 | 15 | 1/2 | 19 | 19 | 28 | 36 | 36 | 36 | 23.8 | 23.8 | 14.3 |
| 25~900 | 1~36 | 20 | 3/4 | 22 | 22 | 32 | 43 | 43 | 46 | 30.2 | 30.2 | 19.1 |
| 32~900 | 5/4~36 | 25 | 1 | 27 | 27 | 38 | 55 | 55 | 51 | 36.5 | 36.5 | 25.4 |
| 40~900 | 3/2~36 | 32 | 1. 1/4 | 32 | 32 | 44 | 66 | 66 | 63 | 44.5 | 44.5 | 33.3 |
| 50~900 | 2~36 | 40 | 1. 1/2 | 33 | 33 | 51 | 74 | 74 | 71 | 50.8 | 50.8 | 38.1 |
| 65~900 | 5/2~36 | 50 | 2 | 38 | 38 | 55 | 90 | 90 | 82 | 65.1 | 65.1 | 42.9 |
| 80^900 | 3~36 | 65 | 2. 1/2 | 41 | 41 | 62 | 104 | 104 | 98 | 76.2 | 76.2 | 54 |
| 90~900 | 7/2~36 | 80 | 3 | 44 | 44 | 73 | 124 | 124 | 122 | 93.7 | 93.7 | 77 |
| 100~900 | 4~36 | 90 | 3. 1/2 | 48 | 48 | - | 138 | 138 | - | 101.6 | 101.6 | - |
| 125~900 | 5~36 | 100 | 4 | 51 | 51 | 84 | 154 | 154 | 154 | 120.7 | 120.7 | 98.4 |
| 150~900 | 6~36 | 125 | 5 | 57 | 57 | 94 | 187 | 187 | 188 | 141.3 | 141.3 | 122.2 |
| 200~900 | 8~36 | 150 | 6 | 60 | 78 | 105 | 213 | 227 | 222 | 169.9 | 169.9 | 146.1 |
| 250~900 | 10~36 | 200 | 8 | 70 | 99 | - | 265 | 292 | - | 220.7 | 220.7 | - |
| 300~900 | 12~36 | 250 | 10 | 78 | 94 | - | 323 | 325 | - | 274.6 | 265.1 | - |
| 350~900 | 14~36 | 300 | 12 | 86 | 103 | - | 379 | 381 | - | 325.4 | 317.5 | - |
| 400~900 | 16~36 | 350 | 14 | 89 | 100 | - | 411 | 416 | - | 357.2 | 350.9 | - |
| 450~900 | 18~36 | 400 | 16 | 94 | 106 | - | 465 | 468 | - | 408 | 403.2 | - |
| 500~900 | 20~36 | 450 | 18 | 97 | 111 | - | 522 | 525 | - | 458.8 | 455.6 | - |
| 550~900 | 22~36 | 500 | 20 | 102 | 119 | - | 573 | 584 | - | 508.8 | 509.6 | - |
| 650~900 | 26~36 | 600 | 24 | 116 | 140 | - | 690 | 708 | - | 614.4 | 614.4 | - |
1, Training and explanation shall be conducted before construction to make the installation personnel of butt welding branch pipe completely understand the installation requirements.
2, And professional personnel shall be arranged to explain the technical points and relevant requirements of butt welding branch pipe installation in kind on site.
3, If the combined weld is adopted according to the pressure vessel standard, i.e. the weld is of penetration type, the assessment can be supported by butt welding assessment, and GTAW back cover and SMAW filling groove should be used when welding. 3-4mm is reserved for the gap.
4, Heat treatment should be based on the material. For heat-resistant steel such as chrome molybdenum steel, it is necessary to preheat before welding and then conduct stress relief heat treatment after welding.
5, If the carbon steel weld is not very concentrated, it can also not be done. If the boiler standard is also a combined weld, the form test piece and butt test piece are needed to support the weld.
6, Weld inspection can be completed by UT and Pt. The welding method is the same as above.
1, Olet is mainly used in the occasions where butt welding connection is required.
2, The branch pipe is generally used for more than 2 "branch pipe, which is equivalent to the overall reinforcement of the main pipe.
3, Instead of the traditional branch connection types such as reducing tee, reinforcing plate and strengthening pipe section.
4, There are few applications in layout design, but there are Olet fittings in PDMS fittings library.
a. Plastic bubble bag package b.Wove bag package c.Pallet d. Customized
Our factory have high ability for production, the delivery time is 45days for small quantity, or if you are hurry for that, we can arrange and meet your shipping date.
