When to Use 45 °Elbow Reducer Tube Adaptor?

05, May. 2025

 

Tube Fittings and Adapters — Unions — 45° Elbows

Gaugeable Tube Fittings and Adapter Fittings

Swagelok® tube fittings and tube adapters reduce the risk of costly system downtime with reliable tubing connections and are available in a variety of sizes and materials.

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If you have questions about this product, please contact your local authorized sales and service center. They can also tell you about supporting services to help you get the most out of your investment.

Steel Pipe Elbow (45 and 90 degree) Types & Specifications

Classification by Material

According to the valve body material, it has stainless steel, carbon steel and alloy steel elbow.

Carbon Steel Elbow

Material in carbon steel, referred standards as:
ASTM 234 WPB and WPC
ASTM A420 WPL6
MSS-SP-75 WPHY 42, 46, 52, 56, 60, 65 and 70

Stainless Steel Pipe Elbow

Stainless steel pipe elbow has higher strength and higher corrosion-resistances than carbon steel elbow. For general surface treatment, stainless steel elbow is used in high corrosion environment, such as chemical plants, offshore and gas pipelines. Surface treatment in 2B or mirror, these are used in food industries and sanitary purposes.

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Material in stainless steel, referred standards as:
ASTM A403  WP 304/304L, 316/316L
ASTM A270

Stainless steel 90 degree elbow

Stainless steel 90 degree elbow is a most common use of pipe elbow for stainless pipelines. Other than this is stainless steel 45 degree elbow, both of them in large requirements for butt weld, socket weld, and threaded connections.

How to Make Steel Pipe Elbow – 2 Options

Speaking of the forming of these steel pipe elbow, it has many steps. Even so , it is considered quite simple compared to other production processes.

Option 1 to manufacture steel pipe elbow

First, we could weld the closed end of a polygonal circular shell or a polygonal sector shell. When the pipe inside filled with pressure medium, its cross section will change from a polygon to a tubular shape. Under internal pressure, the section will be a circular shell. Ring can be cut into four 90 degree elbows or six 60 degree elbow or any other size requirement. Due to advances in technology, the welding process can be applied in different application. For example, it is now possible to weld and manufacture larger diameter steel pipe elbow, especially large diameter that in long radius.

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Option 2