Seamless stainless steel pipe

Seamless Tube

"Rattling fire, sparkling with the brilliance of steel!" the famous song sings. It is from seamless steel pipes that gun barrels are made. These pipes do not have any joints or welds in their length. They are produced by rolling, forging, pressing or drawing. They are in demand in literally all industries. The most popular brand is considered seamless pipe 12X18H10T. What is the main disadvantage of the welded seam? No matter how high quality welding was not performed, it is impossible to rule out a leaky seam. And if hazardous chemical liquids are circulating through the pipes, possible leaks must be excluded.

Advantages

Reliability, durability aesthetics and versatility, excellent protective and anti-corrosive properties. Such a pipe - an absolute guarantee of undesirable leaks of aggressive media in industrial enterprises or water from domestic utilities - a pledge of excellent consumer qualities of erected facilities. The use of stainless steel thick-walled and thin-walled pipe makes it possible to vary the weight and metal capacity of the structure. Thin-walled pipe gives the construction lightness, it is widely demanded, for example, by designers.

Disadvantages

The relative disadvantage of such pipes is their high cost. But taking into account the reliability and durability, such a price seems more than justified.

Use of different grades of stainless steel pipes

Grade 06ХН28МДТ is in demand for chemical equipment operating in the acid environment - boiling H2 SO4 and other acids (except 55% H3PO4 and acetic acid). It can be used for a long time in petrochemical production and synthesis columns.

10Х17Н13М2Т.

Austenitic 10Х17Н13М2Т tube is resistant to acid environment and alloyed with chromium, nickel, molybdenum and titanium. The consumption of this alloy is close to 70% of all stainless steel produced. Optimal alloying improves performance qualities. Nickel increases ductility and corrosion resistance, chromium and molybdenum increase thermal and corrosion resistance and titanium increases stress resistance. These pipes are easy to weld without pre-treatment and the final heat treatment of the seam. They are widely used by the food, medical, chemical, petrochemical, metallurgical and shipbuilding industries - in the most demanding conditions. The advantages of such pipes are retained for a long time at temperatures ≤ 600˚C. Thanks to durability the repair and maintenance costs are significantly reduced.

10Х23Н18

Heat-resistant pipe 10Х23Н18 of austenitic complex alloy steel is the basis of parts of combustion chambers, elements of steam generators and boilers, fragments of heat-exchange fittings, operating at t ° up to 1100 ° C.

Tubes 10Х23Н18 GOST σB δ5
Cold-deformed 9941-81 529 35
Hot-formed 9940-81 491 37

σB - ultimate short-term strength;

δ5 - relative elongation at break;

12Х18Н10Т

Similar steel pipe 12Х18Н10Т today is considered one of the most popular in the sector of rolled metal products. Its composition includes chromium, nickel and titanium. Pipes of this type are produced seamless or with a welded seam. For example, as a support for the canopy of the building, such a pipe can be welded - it has an attractive aesthetic, strength, resistance to the action of wet condensation. Seamless pipes of this brand can be permanently exploited in contact with aggressive environment in chemical, petrochemical industry, metallurgy and shipbuilding. They serve as a basis for heat-exchange fixtures, muffles, details of slotted furnaces, etc.

12Х18Н10Т pipes. GOST σB δ5
Cold-deformed 9941-81 549 35
Hot-formed 9940-81 529 40

σB - ultimate short-term strength;

δ5 - relative elongation at break;

20Х23Н18В

Due to high corrosion resistance, 20Х23Н18 В pipe finds the widest application in chemical, transport and food industries. It is used for laying pipelines of heating systems, domestic water supply. Steel 20X23H18 B has no effect on the chemical composition of running water, so it is used not only for industrial boilers and pipelines, but also for drinking water. Such pipes successfully regulate the flow of a variety of media. They are used in construction and architecture for decorative design. After all, this pipe is not only aesthetically attractive, but also very resistant to atmospheric influences and corrosion. Seamless tubes of this brand are resistant in contact with aggressive media They are the basis of heat exchangers, combustion chambers and other furnace equipment operating at temperatures up to 1050 ° C.

Common grades of stainless seamless pipes

GOST 12Х18Н10Т 10Х17Н13М2Т 20X23H18 06XHN28MDT
UNS 321 316Ti 310S 904L
Alloy classification Corrosion-resistant high-temperature alloy Heat-resistant high-alloyed steel Stainless steel ordinary corrosion-resistant Corrosion-resistant
Fe base base 37 - 46.5
C ≤ 0.08 ≤ 0.1 ≤ 0.2 ≤ 0.06
Si ≤ 0.8 0.8 ≤ 1 ≤ 0.8
Mn ≤ 2 2 ≤ 2 ≤ 0.8
Ni 9 - 11 12-14 17-20 26 - 29
Cr 17 - 19 16-18 22-25 22 - 25
Ti (5 С* 0.7) (5 С* 0.7) - 0.5 - 0.9
Cu ≤ 0.3 ≤ 0.3 - 2.5 - 3.5
Other - Mo = 2 - 3 - Mo = 2.5 - 3
Hardness in [MPa] HB 10-1 179 200
Material density, [kg/m3] 7900 7950 7900 7960
Weldability no restrictions. Without restriction Limited weldable

Supplies

We supply certified pipes of any grades. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of products. From us you can buy in bulk any products for large-scale productions. We also offer the best conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

Buy at optimum price

All stainless pipes, sold by Evek GmbH company correspond to GOST and international quality standards. We supply rolled metal products of standard and non-standard sizes in the shortest terms. High quality, reasonable prices and a wide choice of products determine the face of our company. Becoming our regular client you can count on a system of discount discounts. Cooperation with us will help you realize any engineering plans. We are waiting for your orders on our site.