First, what is DIN2391-94C cold-drawn precision seamless steel pipe?
DIN2391-94C cold-drawn precision seamless steel pipe is a precision steel pipe manufactured according to the DIN 2391-1994 standard. Its production process mainly includes precision drawing of high-quality carbon steel, non-oxidizing bright heat treatment (e.g., NBK condition), non-destructive testing, internal wall brushing and high-pressure flushing, rust prevention treatment, and dustproof sealing. These processes ensure high precision and high surface finish of the inner and outer walls of the steel pipe, as well as its ability to withstand high pressure, remain undeformed during cold bending, and be crack-free during flaring and flattening.
Second, what are the main characteristics of DIN2391-94C cold-drawn precision seamless steel pipe?
1) High precision and high surface finish: The inner and outer walls of the cold-drawn precision seamless steel pipe undergo precision processing, resulting in low surface roughness and excellent surface finish and precision.
2) High-pressure resistance: Cold-drawn precision seamless steel pipe has high pressure resistance and is suitable for use in high-pressure environments.
3) No deformation during cold bending: Cold-drawn precision seamless steel pipes are not easily deformed during cold bending, ensuring their stability and reliability during use.
4) No cracks during flaring and flattening: Cold-drawn precision seamless steel pipes do not crack after flaring and flattening tests, exhibiting excellent mechanical properties.
Third, what are the main applications of DIN2391-94C cold-drawn precision seamless steel pipes?
DIN2391-94C cold-drawn precision seamless steel pipes are mainly used in fields with high requirements for steel pipe precision, surface finish, cleanliness, and mechanical properties, such as:
1) Hydraulic systems: Used to manufacture hydraulic cylinders, hydraulic valves, and other hydraulic components, ensuring the stability and reliability of hydraulic systems.
2) Automotive systems: Used to manufacture automotive parts, such as steering gears and shock absorbers, improving the comfort and safety of automobiles.
3) Machine tool systems: Used to manufacture key components such as machine tool guideways and spindles, improving the precision and stability of machine tools.
Fourth, what are the delivery conditions and mechanical properties of DIN2391-94C cold-drawn precision seamless steel tubes?
According to the DIN 2391-1994 standard, DIN2391-94C cold-drawn precision seamless steel tubes have various delivery conditions, such as bright-drawn hard state (BK), bright-drawn soft state (BKW), bright-drawn stress-relieved annealed state (BKS), annealed state (GBK), and normalized state (NBK). Steel tubes in different delivery conditions have different mechanical properties, such as tensile strength, yield point, and residual elongation.
Fifth, what are the precautions for DIN2391-94C cold-drawn precision seamless steel tubes?
1) Choose the appropriate delivery condition: Select the appropriate delivery condition according to specific usage requirements to ensure the mechanical and performance properties of the cold-drawn precision seamless steel tubes.
2) Pay attention to the storage and transportation of the steel tubes: During storage and transportation, avoid damage or deformation of the cold-drawn precision seamless steel tubes to ensure their quality and performance.
3) How to conduct quality acceptance: When receiving cold-drawn precision seamless steel pipes, quality acceptance should be carried out to check whether the dimensions, precision, surface finish, and mechanical properties of the cold-drawn precision seamless steel pipes meet the standards and requirements agreed in the contract.
Post time: Jan-19-2026