SS400 Square Steel Pipes

The manufacturing process of SS400 Square Steel Pipes involves several key steps to ensure their performance and quality:

Melting and Casting: The process begins with the melting of raw materials, followed by casting into ingots or blooms.

Hot Rolling: The ingots are then hot-rolled into square shapes. This step is crucial for achieving the desired dimensions and surface finish.

Cold Rolling: After hot rolling, the pipes may undergo cold rolling to refine the dimensions and improve the surface quality.

Annealing: Annealing is performed to relieve internal stresses and to enhance ductility and toughness.

Quality Control: Throughout the process, quality checks are conducted to ensure the pipes meet the required mechanical properties, such as tensile strength and yield strength.

Heat Treatment: Depending on the application, heat treatment processes like normalization or quenching might be applied to achieve specific mechanical properties.

Inspection and Testing: The pipes are inspected for surface defects and undergo non-destructive testing to ensure they are free from internal flaws.

Coating: If necessary, the pipes are coated or treated to provide additional protection against corrosion.

Each step is meticulously controlled to ensure that the final product meets the JIS G3101 standard for SS400 steel, which specifies the chemical composition and mechanical properties of the material. Proper control of the manufacturing process ensures that SS400 square steel pipes have the required strength, weldability, and formability for various applications.

FAQ

1, what is your time of making a sample

Usually we will take 1~3 days to make the sample

2,What is your delivery time?

For stocks, we can send the goods to loading port within 7 days after receiving your deposit

For production period, it usually needs about 15days- 30 days after receiving the deposit.

3,What is your payment terms?

Usually 30% deposit by TT in advance and balance against copy of BL or LC at sight

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