U BEND
U BEND - industrial steel product
Carbon & Alloy Elbow Tee Reducer Cap Flange ASME B16.9 GB/T12459
Factory supply seamless carbon & alloy pipe fittings, custom wall thickness & radius, heat treatment, 100% UT/MT/PT NDT, complete MTC certification for thermal power, chemical and overseas EPC pipeline projects.
Butt weld pipe fittings allow for changing the direction of flow, reducing pipe sizes and attaching auxiliary equipment.
A common example using welded pipe fitting is a pipe reduced by concentric reducer, welded to a weld neck flange and connected to an equipment.
Pipe flanges are basically plates or rings used to connect pipes, valves and other piping equipment to form a piping system.
A flange standard lays down the dimensions, surface finish, facing type, marking, material and technical specifications for flanges.
Expansion joints are installed in a piping system to absorb vibration and shock.
Expansion joint comes in two forms either restrained or unrestrained styles and although the bellows membrane incorporated in both styles look similar it is of great importance to recognize that they are used for entirely different applications.
Fittings are components that are used to connect, join, or adapt different parts of a system, such as pipes, tubes, or hoses. They serve multiple purposes, including:
Fittings are used to connect sections of pipes, tubes, or hoses, ensuring a secure and leak-free joint.
Flanged
Butt welded
They allow for changes in the direction of fluid or gas flow within a system, such as elbows or bends.
Fittings can adapt pipes or tubes of different sizes, ensuring compatibility.
They enable branching or splitting of fluid or gas flow into multiple directions, like tees or crosses.
Some fittings incorporate valves or controls to regulate or stop the flow as needed.
Fittings may include pressure-relief valves or regulators to control fluid or gas pressure.
Fittings with inspection ports or couplings facilitate system maintenance and testing.
Fittings allow pipes or hoses to connect to various equipment or appliances.
The choice of fittings depends on the specific requirements of the system, including factors like the type of fluid or gas, pressure, temperature, and the layout of the piping or tubing system. Different industries, such as plumbing, HVAC (Heating, Ventilation, and Air Conditioning), manufacturing, and construction, rely on fittings to ensure the proper functioning of their systems.
They are designed to provide a secure and leak-free connection while withstanding corrosive environments and high temperatures.
Steel pipe fittings are hot-forged seamless connection components used to change pipeline direction, branch flow, adjust diameter and seal pipe ends, widely matched with seamless steel pipes for power, chemical, heating and oil & gas transmission systems. All seamless fittings adopt integral hot forming process without welding seam inside, ensuring high safety under long-term high temperature and high pressure working cycles.
We produce full series carbon & alloy pipe fittings compliant with international ASME and Chinese GB national standards, supporting matching ASTM A335 boiler alloy pipe, GB 20#/15CrMoG boiler tube. Custom bend radius, wall thickness, heat treatment and anti-corrosion surface treatment are available for domestic bidding and overseas EPC pipeline projects.
Pipe fitting is work that involves the installation or repair of pipes or tubes.
| Fitting Name | Main Specifications | Pipeline Function |
|---|---|---|
| Seamless Elbow | 45° / 90° / 180°, Short Radius SR / Long Radius LR | Change fluid flow direction in pipeline |
| Equal / Reducing Tee | Straight tee, lateral reducing tee | Branch pipeline for medium shunting |
| Concentric / Eccentric Reducer | Concentric straight, eccentric anti-cavitation | Adjust pipeline inner diameter size |
| Pipe Cap / End Cap | Hemispherical, elliptical flat cap | Seal pipeline terminal end |
| Stub End (Lap Joint) | Standard wall thickness for loose flange matching | Support lap joint flange connection |
| Forged WN/SO/BL Flange | Class150~2500, PN10~PN160 | Detachable pipeline joint connection |
| Standard System | Standard Code | Scope |
|---|---|---|
| American ASME | ASME B16.9 | Factory made seamless butt-welding fittings |
| ASTM Material Standard | ASTM A234 WPB / WP11 / WP22 | Carbon & alloy fitting material specification |
| Chinese GB National | GB/T 12459 | Hot formed seamless butt welding pipe fittings |
| Chinese Boiler Special | GB/T 13401 | Large diameter welded fittings (supplied separately) |
| Flange Standard | ASME B16.5 / GB/T9113 | Forged steel pipe flanges and gaskets |
| Grade | C Max | Mn | Si | Cr | Mo | P Max | S Max |
|---|---|---|---|---|---|---|---|
| 20# / A234 WPB Carbon | 0.30 | 0.30~1.06 | 0.10 Min | - | - | 0.035 | 0.035 |
| 16Mn / Q345 | 0.20 | 1.20~1.60 | 0.20~0.55 | - | - | 0.030 | 0.030 |
| WP11 / 15CrMo | 0.15 | 0.30~0.60 | 0.50 Max | 1.00~1.50 | 0.44~0.65 | 0.030 | 0.030 |
| WP22 / 12Cr2Mo1 | 0.15 | 0.30~0.60 | 0.50 Max | 2.00~2.50 | 0.90~1.10 | 0.030 | 0.030 |
| 15CrMoG Boiler Alloy | 0.18 | 0.40~0.70 | 0.17~0.37 | 0.80~1.10 | 0.44~0.65 | 0.030 | 0.030 |
WPB / 20# for medium temperature general pipeline; WP11/WP22 Cr-Mo alloy for power station high-temperature boiler superheater & reheater pipeline system.
EN 10204 3.1 / 3.2 official MTC test certificate issued for each batch, fully meet domestic bidding and international third-party supervision audit requirements.
Small size fittings packed in wooden crates with anti-collision foam filling; large diameter fittings bundled with steel straps, plastic protective caps installed on welding bevel ends to prevent scratch damage. All fittings coated with anti-rust oil inside and outside for long-distance ocean transportation.
Each bundle / crate attached label with standard code, material grade, DN size, wall thickness sch and heat batch number. Support wooden pallet or full container loading, EXW / FOB / CIF / DAP international trade settlement terms for global pipeline engineering importers.
Visual Inspection is conducted on fittings to check any surface imperfections. Both fittings body and weld are checked for any visible surface imperfections such as dents, die marks, porosity, undercuts, etc. Acceptance as per applicable standard.
For packing of carbon steel flanges with painting,we would use the bubble wrap to protect the painting.For flanges without painting or oiled with long-term shipment,we would suggest client to use the anti-tarnish paper and plastic bag to prevent the rust.
Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
