45 degrees, 90 degrees pipe butt welding carbon steel elbow pipe fittings

Elbow is a commonly used connection pipe fittings in water heating installation, which is used to connect the corner of the pipeline and change the direction of the pipeline.

Other names: 90° elbow, right Angle bend, love bend, stamping elbow, pressing elbow, mechanical elbow, welding elbow, etc.

Use: Connect two pipes with the same or different nominal diameters to make the pipes turn 90°, 45°, 180° and various degrees.

The bending radius is less than or equal to 1.5 times the diameter of the pipe belongs to the elbow, and the bending radius is greater than 1.5 times the diameter of the pipe belongs to the bend.

Purpose

German standard elbow

A connection pipe fitting commonly used in pipeline installation is connected to two pipes with the same or different nominal diametre, so that the pipeline makes a certain Angle turn, and the nominal pressure is 1-1.6Mpa.

Technical requirements:

1. because most of the pipe fittings are used for welding, in order to improve the quality of welding, the end is turned into a groove, leaving a certain Angle, with a certain side, this requirement is also more strict, how thick the side, how much Angle and the deviation range are specified. The surface quality and mechanical properties are basically the same as the pipe. In order to facilitate welding, the steel grade of the pipe fittings and the pipe to be connected is the same.

2. that is, all pipe fittings should be surface treatment, the inner and outer surface of the oxide sheet through shot blasting spray, and then coated with anti-corrosion paint. This is for export needs, in addition, in order to facilitate transportation to prevent rust and oxidation, we must do this work.

3. is the packaging requirements for small pipe fittings, such as exports, you need to make wooden boxes, about 1 cubic meter, the number of elbows in this box can not exceed one ton, the standard allows the set, that is, a large set of small, but the total weight generally can not exceed 1 ton. For large pieces y needs individual packaging. The other is the packaging mark, the mark is to indicate the size, steel number, batch number, manufacturer's trademark and so on.

The elbow is connected to two pipes with the same or different nominal diameter, and the pipe makes a certain Angle turn, and the nominal pressure is 1-1.6Mpa.

Partition by material

Carbon steel: 10#, 20#, A3, Q235A, Q235B, 20g, ASTM A234 WPB, ASTM A105, ASTM A403 A106B, etc

Alloy steel: 16Mn 16MnR Cr5Mo 12Cr1MoV 10CrMo910 15CrMo 12Cr2Mo1 A335P22

Stainless steel: 1CR18Ni9Ti 0Cr18Ni9 00Cr19Ni10 0Cr17Ni12Mo2Ti 00Cr17Ni14Mo2 304 304L 316 316L etc

Pipeline steel: API 5LX42 X52 X60 X70, etc