A333 Grade 6 Low-Temperature Steel Pipe

A333 Gr.6 Low-Temperature Pipe is an industrial pipeline specifically designed for low-temperature environments. The following is a detailed introduction to it:

I. Applicable Scope

A333 Gr.6 low-temperature steel pipes are suitable for pipelines in low-temperature pressure vessels ranging from -45℃ to -195℃ and for low-temperature heat exchanger pipelines. These pipes maintain stable performance at low temperatures, ensuring the safe operation of the pipeline system.

Section 2: Execution Standards and Specifications

• Execution Standard: Low-temperature steel pipes, A333 Gr.6, comply with GB/T18984-2003 and ASTM A333 standards.

• Spec Range: Stock sizes typically range from 8-1240×1-200mm (also expressed as 1/8"—48”×SCH5S—SCH160, STD, XS, XXS).

Section 3: Material and Performance

• Material: Low-temperature steel pipes of A333Gr.6 can be manufactured from various materials, such as 16MnDG, 10MnDG, 09DG, 09Mn2VDG, 06Ni3MoDG, and other low-temperature steel pipe materials.

• Mechanical Properties: A333 Gr.6 low-temperature steel pipes feature high tensile and yield strength, while maintaining excellent elongation, to meet the requirements for use in low-temperature environments.

• Chemical Composition: The chemical composition of A333 Gr.6 low-temperature steel pipes conforms to relevant standards, ensuring the pipes' corrosion resistance and low-temperature toughness.

Four: Welding and Precautions

• Welding Requirements: The welding of A333Gr.6 low-temperature steel pipes must be successful in one attempt to prevent deformation or melting due to repeated heating. The welding rod must be evenly coated with flux, the flame of the welding torch must not be too long, and it must be heated with a low flame.

• Caution: During welding, ensure the welding time is not excessive to prevent the钢管 wall from melting or thinning. Additionally, place a wet towel or other protective measures inside the inner lining to prevent damage due to a cramped welding space. After welding, wait until the pipe cools before handling to avoid leakage at the weld point.

Section 6: Market Price and Supply Conditions

Market prices for A333Gr.6 low-temperature steel pipes are influenced by various factors such as raw material costs, production expenses, and market demand. Consequently, prices may vary depending on suppliers, specifications, and quality. On the supply side, many steel pipe manufacturers and dealers offer stock supply and customized processing services for A333Gr.6 low-temperature steel pipes to meet diverse customer needs.