The Elbow is one of pipe fittings which change the direction in the pipeline system. Available in material of carbon steel, stainless steel, alloy steel.

According to the angle, there are three most commonly types, they are 45° , 90° elbow and 180° Elbow. In addition to engineering needs also include 60° and other non-standard angle elbow.

Connection Method of Pipe Elbow

• Butt Weld
• Socket Weld
• Threaded

Pipe Elbow Application

German standard elbow installation is commonly used in a connection with fittings, connecting two nominal diameter of the same or different , so that the pipe to make a certain angle turn, nominal pressure for 1-1.6 Mpa.

Technical of Elbow

• Welding

To improve the quality of welding, the pipe end are available in many types such as beveling, or leaving a certain angle. Surface quality and mechanical properties are basically the same as pipes.

• Surface Treatment.

The internal and external surface of the iron oxide skin should be operated the spray shot treatment, and then coated with anti-corrosion paint. This is to cover export needs, moreover, also to facilitate transport and prevent corrosion and oxidation in local.

• Package

For exporting, such as small pipe elbows are preferred into wooden cases, it is about 1 cubic meters, and the number of elbows cannot be more than a ton. Larger pipe elbows are separately packed into wooden pallet.

• Marking

It covers the size, steel number, lot numbers, manufacturer, trademarks and so on.

Material of Elbow

• Carbon Steel

ASTM/ASME A234 WPB, WPC

• Alloy Steel

ASTM/ASME A234 WP1, WP12, WP11, WP22, WP5, WP91

• Stainless Steel

ASTM/ASME A403 WP304/304L, WP316/316L, WP310, WP317, WP321

• Low Temperature

ASTM/ASME A430 WPL3, WPL6, WPL9

• High-Performance

ASTM/ASME A860 WPHY42, 46, 52,60,65,70

Manufacture Method of Pipe Elbow

• Pushing
• Suppressing,
• Forging
• Casting.

Elbow Radius

• Long Radius Elbow. R=1.5D.
• Short Radius Elbow. R=1D

Elbow Thickness

There are 17 kinds, same as American standard of pipe. Like Sch5s、Sch10s、Sch10、Sch20、Sch30、Sch40s、STD、Sch40、Sch60、Sch80s、XS;Sch80、SCH100、Sch120、Sch140、Sch160、XXS.

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