Standard for 90-degree carbon steel elbows,

A 90 degree carbon steel elbow is a common pipe connector used to change the flow of the pipe. It has the characteristics of bending fixed Angle, usually used in construction, chemical, petroleum, gas, water supply and other fields in order to ensure stability and availability, in production and use, 90 degree carbon steel elbows need to meet a series of standards and specifications. This article will introduce the standard of 90 degree carbon steel elbow in detail, including material, manufacturing, size, connection mode, surface treatment and so on.

1. Material standards

The material of 90 degree carbon steel elbow is usually carbon steel, carbon steel is an iron-carbon alloy material containing carbon between 0.04% and 2.0%. Commonly used carbon steel material standards are ASTM A234, ASTM A105, GB/T 59 and so on. These standards specify the chemical composition of carbon steel, machine heat treatment and other requirements to ensure the quality and reliability of the elbow.

Steel elbow manufacturing standards include manufacturing process, production equipment, quality control and other aspects. Commonly used system standards are ASME B16.9, GB/T 12459 and so on. These standards specify manufacturing processes, including hot press bending, cold bending, heat treatment, etc. At the same time, it also stipulates the requirements of production equipment, including pipe bending machine, hydraulic press, etc. In addition, it also includes quality control requirements, such as acceptance standards, to ensure that the quality of the elbow meets the standard requirements.

Three, size standards

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