HN30MDB: alloy tube, circle
Alloy HN30MDB EK77 is a heat-resistant high-alloy steel; It has in its composition of approximately 27−29% chromium and 29−31% nickel. Therefore, the alloy can be called chrome-nickel. The role of additive to the charge, 0.5 — 1.8% manganese, 0.2% silicon, not more than 0.2% niobium and 1.5% copper, up to 0.02% phosphorus and sulfur as much. forging temperature is 1170 ° C at the beginning of the process and about 850 ° C — at the end. Pipe section of the alloy to 350 mm specially cooled in the open air. All pipes are produced mainly with round cross-sections, at least — with a rectangular, oval and square cross-sections. Scope pipe divides them into 6 main classes. The higher the class, the higher the requirements for heat resistance, heat resistance, corrosion resistance, which is directly dependent on the proportion of chromium and nickel.
The percentage of (GOST 5632−72)
|HN30MDB||≤0.02||≤0.2||0.5−1,8||≤0.02||≤0.02||29 — 31||27 — 29||2.8 -3.5||0.9 — 1.5||≤0.2||Bas.||≤0.05|
Classification of pipes
Tube first class is used to hide the cable in a variety of designs for the manufacture of scaffoldings, when creating irrigation systems for local delivery various liquids, such as water supply and heating systems in the systems. Tubes of the second class are used at elevated or reduced pressure may therefore be used to supply gas, water, oil and various petrochemical products in the pipeline. Pipe third austenitic-ferritic class used in a variety of systems at high pressure, because frequently used in the nuclear and chemical industries. Tube fourth class serves as an auxiliary, as well as drill pipes with different geological prospecting. Fifth grade is used in the manufacture of automobiles, overhead cranes, towers, in the wood and furniture industry. The highest class of pipes can be regarded as the sixth, which is used in the manufacture of bearings in machinery, establishing pistons and other parts that operate under high pressure.
assortmentWith a thickness of 0.3−6 mm and wall Ø 5−250 mm pipes are the name of a particularly thin-walled. Thin-walled tubes have a wall thickness of 0,6−20 mm and Ø 5−250 mm. Thick-walled tubes have a wall thickness of 1,6−24 mm and Ø 6−250 mm. Pipes thick-walled produce especially with 2−12 mm wall thickness at Ø6−70 mm. The tubes are thinner than 9 mm, supplied in coils, and more than 9 mm — straight lines that divide the length on the off-gage, cut length and multiple dimensional length. Quality HN28VMAB high alloy steel allows to produce products 1−6 meters. The smaller the carbon contained in the alloy and the lower the quality of the steel, the greater the length of the released product. Rent 2 to 6 meters are made from carbon and low-alloy steel of usual quality. From high-quality alloyed carbon steel manufacture products of any parameters.
When the reservation for the manufacture of pipes or round mark in accordance with the standard curve determined and rolling. It is measured on the product at least one meter in length, wherein the measurement is taken at a distance of 15 cm from the edge of the product. Lead times are minimal. When wholesale purchases include preferential discounts.
Buy at the best price
HN30MDB assortment of brand products by LLC «Electrovek-steel» will satisfy any customer. Price is determined by the technological features of production without including additional costs. All products are certified. We easily purchase wholesale products needed for large-scale projects, we also offer favorable conditions for retail customers. Technological equipment of each production stage gives us an opportunity to carry out individual orders of non-standard options. The products are manufactured in strict compliance with the requirements of the technological process that guarantees the highest quality, it is kept under cover or indoors to protect against mechanical damage, exposure to moisture and aggressive substances. Terms of realization of orders are minimal. Wholesale customers receive discounts.