Stainless Steel 321 45 Degree Elbow

What is Stainless Steel 321 45 Degree Elbow？

Stainless steel 321 45 degree elbow is one type of stainless steel pipe fittings which used to change direction of the pipeline.It can be divided into long radius (LR) and short radius (SR). We provide carbon steel, stainless steel and aluminum elbow in both seamless and welded for the overseas projects. In the field of butt welding steel elbows, it looks like a half of the 90 degree elbow. Commonly, the 90 degree elbows can be a seamless elbow or a welded elbow. Bending the two ends of pipe to a angle of 45 degree, it is a 45 degree seamless elbow.

The function of a 45 Degree Long Radius Elbow is same as 90 degrees long and short elbow, but the measurement and dimensions are different to that of a 90 degree long and the short elbow. The radius of both the 45 degree and 90 Degree long and short elbow is the same however, the center to face dimension is not equivalent due to the smaller degree of bend.Compared with 90 degree elbow, 45 degree elbow produces less friction and lower pressure.

Stainless steel 321 45 degree elbow widely used in chemical, food, water supply facilities, electronic industry, chemical piping, horticulture, agricultural production, solar equipment piping, air conditioning piping and many other applications.

ASME B16.9 45 Degree Elbow

Stainless steel 321 45 degree elbow produced according to ASME B16.9 standard.ASME B16.9 is a production standard for butt weld fittings components issued by the American Society of Mechanical Engineers (ASME). This standard mainly targets factory prefabricated elbows, tees, and reducing fittings used in metal pipeline systems with diameters ranging from 1/2 inch to 48 inch.

ASME B16.9 butt weld elbow is the most common used fittings in the industries by various degrees of 22.5, 45, 90 and 180. Besides, they have good yield strength and tensile strength. Usually the butt weld tee and reducer have function of reducing the sizes in the pipe system, while we can produce the special reducing elbow to connect pipes with different sizes.

Specification for 45 Degree Elbow

Elbow Fittings Connection Types Classification

Butt Weld Elbow

Butt weld elbow is a steel elbow formed by hot pressing or forging. Its connection form is to directly weld the elbow and steel pipe. Butt welded elbows are mainly used for elbow with higher pressure and temperature than other connection types (socket welded elbow or threaded pipe elbow). Stainless steel 321 45 degree elbow is a type of common butt weld fittings.

Socket Weld Elbow

Socket weld elbows are also welded to the ends of pipes and fittings. Unlike butt weld elbows, socket weld elbows have a trapezoidal area at the end. We can insert the pipe ends into this area and then do the welding work to join them together.

Threaded Elbow

The shape of threaded elbow is similar to the socket weld elbow, except that the inner surface of the trapezoidal area has been machined into thread. It is easier to install and remove, good for pipeline repair and maintenance.

How to Make a Steel Pipe Elbow ?

First, we can weld the closed ends of polygonal round shells or polygonal sector shells. When the inside of the pipe is filled with pressure medium, its cross-section will change from polygonal to tubular. Under internal pressure, the cross-section will be a circular shell. Rings can be cut into 90 degree elbows or 45 degree elbows or any other size requirement. Due to technological advancements, welding processes can be used in different applications. For example, it is now possible to weld and manufacture larger diameter steel pipe elbows, especially large diameter steel pipe elbows long radius.

You can also directly purchase seamless pipes or welded pipes as materials for steel elbows, then use a heating machine to heat the pipe body, and then push the pipe body into molds of varying degrees to form the elbow shape.

Stainless Steel 321 45 Degree Elbow Material

ASTM A403 WP321 is a stabilized austenitic stainless steel similar to type 304 but with a titanium addition. This titanium addition reduces or prevents carbide precipitation during welding and in 800 - 1500 °F (427 - 816 °C) service. It also improves the elevated temperature properties of the alloy.

Chemical Composition

Mechanical Properties