ASTM 304 Outer Large Diameter 4mm Stainless Seamless Steel Round Pipe for Chemical Industry

304/304H (UNS S30400/ S30409) is a modification of the most widely utilized "18-8" chromium-nickel austenitic stainless steel. The carbon content is controlled in the range of 0.04-0.10% for increased strength at temperatures above 800°F (427°C). It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications.

It is common practice for 304H to be dual certified as 304 and 304H. The high carbon chemistry of 304H enables 304 to meet the mechanical properties and grain size requirements of 304H.

304/304H has general corrosion resistance similar to 304/304L. It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, 304/304H is subject to carbide precipitation in the heat affected zone of welds.

304/304H is non-magnetic in the annealed condition but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices.

304/304H Stainless Steel Applications:

• Kitchen benches, sinks, troughs, equipment, and appliances

• Chemical containers, including for transport

• Food processing equipment, particularly in beer brewing, milk processing, and winemaking

• Heat exchangers

• Architectural trim and molding

• Woven or welded screens for mining, quarrying & water filtration

• Automotive and aerospace structural use

• Nuts, bolts, screws, and other fasteners in the marine environment

• Construction material in large buildings

• Dyeing industry

Widely used in petroleum, chemical, medical, food, light industry, Industrial pipes and mechanical structural parts such as mechanical meters. In addition, when the bending and torsion strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts. And engineering structure.It is also often used as furniture and kitchen utensils.

Company Profile

Since 2018, Zhongzheng Stainless Steel has actively cooperated with many domestic steel mills. Zhongzheng Stainless Steel regularly exchange steel technology with these mills and make progress from this. ln the process of communicating with customers, we carefully listen to customers' requirements and produce steel products as customers' demands. Under necessary circumstances,Zhongzheng Stainless Steel is willing to help customers find suitable steel mill to produce some special products to save time and cost for customers because we have the reliable resources of still mills to prevent you to be cheated.