Key smelting points to ensure the successful production of Q355NH railway steel

Our pipeline products adopt the national standard and the international standard API 5L, which can meet the needs of Q355NH railway steel pipelines working in different environments-on land in the open air and offshore deep water. Acid-resistant pipelines are produced for transporting highly acidic crude oil.

The company has Q355NH railway steel advanced production equipment and machining technology, excellent marketing team and domestic regional channel partners, and sound management plan for product market development and after-sales service. After years of cooperation experience Q355NH railway steel, we have accumulated a large number of customers at home and abroad, and won unanimous praise.

With our own engineers, metallurgists and CAD draftsmen, we can provide total support from design through to machined casting. OEM precision casting investment Q355NH railway steel casting auto parts, customized investment casting auto parts, custom precision casting automobile parts, truck casting iron fitting parts.
Precision Casting: Tooling making → Wax pattern → Shall making → Chemical analysis → Pouring → Measurement & inspection → Heat Treatment → Processing → Finished product.

Oxygen is a harmful element in Q355NH railway steel steel. With the increase of oxygen content, the strength of Q355NH railway steel steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of Q355NH railway steel steel.

Our company will accept the product quality objection registration record, pass it to the Q355NH railway steel production unit and relevant departments, and timely coordinate the supervision of product Q355NH railway steel quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.