Home

Steel Pipe Elbow

Steel Pipe Elbow Elbow Type: 45 Degree/90 Degree/180 Degree Elbow, Long Radius/Short Radius Elbow Material & Standard: Carbon Steel --- ASME B16.9, ASTM A234 WPB Stainless Steel --- ASTM A403 304/304L/310/310S/316/316L/317L/321 Alloy Steel --- ASTM A234 WP1/5/9/11/12/22/91 Specification: NPS: 1/2''~24''(Seamless), 24''~72''(Welded) DN: 15~1200, WT: 2~80mm, SCH 5~XXS Bending Radius: R=1D~10D, R=15D, R=20D Surface: Light Oiling, Black Painting, Galvanizing, PE /3PE Anti-corrosion Coating Packing: Packed in Wood Cabins/Wood Tray

Classification :

E-mail

PRODUCT DETAILS

Seamless Elbow Manufacturing Process (Heat Bending & Cold Bending)

One of the most common methods for manufacturing elbows is using hot mandrel bending from straight steel pipes. After heating the steel pipe at a elevated temperature, the pipe is pushed, expanded, bended by the inner tools of mandrel step by step. Applying hot mandrel bending can manufacture a wide size range seamless elbow. The characteristics of mandrel bending are strongely depend on the intergrated shape and dimensions of the mandrel. The using advantages of hot bending elbows include smaller thickness deviation and stronger bending radius than other bending methond type. Meanwhile, using bending instead of prefabricated bends substantially reduces the number of welds needed. This reduces the amount of work required and increases the quality and usability of pipes. However, cold bending is the process to bent the straight steel pipe at normal temperatures in a bending machine. Cold bending is suitable for pipes with an outer diameter of 17.0 to 219.1 mm, and wall thickness 2.0 to 28.0 mm. The recommended bending radius is 2.5 x Do. Normally at a bending radius of 40D. By using cold bending, we can get small radius elbows, but we need to pack the internals with sand to prevent wrinkling. Cold bending is a quick and inexpensive bending method. It is a competitive option for making pipelines and machine parts.

Welded Elbow Manufacturing Process (Small & Large)

Welded elbows are made from the steel plates, so it is not seamless steel elbows. Use a mould and press the steel plate to the shape of the elbow, then weld the seam to be a finish steel elbow. It is the old production method of the elbows. Recent years the small sizes elbows are almost manufactured from the steel pipes now. For the big size elbows, for example, it is very difficult to produce elbows over 36” OD from the steel pipes . So it is commonly made from the steel plates, pressing the plate to the shape of half elbow, and welding the two halves together. Since the elbows are welded in its body , the inspection of the welding joint is necessary . Commonly we use the X-Ray inspection as the NDT.

Packing and delivery

Our products are exported to Latin America, South Africa, Europe, the Middle East, Southeast Asia, Australia and other countries and regions. Our cooperative factories have advanced professional manufacturing equipment and mature technology, and have a group of high-quality professional management and technical personnel.

FACTORY WORKSHOP

Is an enterprise integrating the production and operation of stainless steel, carbon steel, galvanized, color-coated aluminum and other steel products. The company has a warehouse of more than 4,000 square meters and always has at least 8,000 tons of steel stocks of different grades, including coils, plates and pipes.

Factory workshop

CUSTOMER VISITS

Our products are exported to countries in Asia, the Middle East, America, Europe, Africa and other countries, and enjoy a good reputation at home and abroad.

Baosteel Ganglian (Tianjin) Steel Co., Ltd.

COOPERATIVE PARTNER

FAQ

1.Q: Are you trading company or manufacturer ?

A: We are professional manufacturer with rich experience, and our company also is a very professional a trade company for steel products. We can also provide a wide range of steel products.

2.Q: Will you delivery the goods on time?

A: Yes,we promise to provide best quality products and delivery on time. Honesty is our company's tenet.

3.Q: Do you provide samples ? Is it free or extra ?

A: The sample could can provide for customer with free,but the courier freight will be covered by customer account.

4.Q: Do you accept the third party inspection?

A: Yes absolutely we accept.

5.Q: How could you guarantee your products?

A: Each piece of products is manufactured by certified workshops, inspected by Linxu piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

6.Q: How long does your delivery time take?

A: Generally, our delivery time is within 7-45 days, if there is a great demand or special circumstances, it may be delayed.

Pipe fitting