Large diameter stainless steel pipe

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
12X18H10T EP2 1.4541 321 X12CrNiTi18-10 Delivery from the stock, in stock
12Х18Н10Т-Н EP2 1.4541 321 X12CrNiTi18-10 Delivery from the stock, in stock
12X18H10T-M EP2 1.4541 321 X12CrNiTi18-10 Delivery from the stock, in stock
12Х18Н10Т-В EP2 1.4541 321 X12CrNiTi18-10 Delivery from the stock, in stock
12X18H10T-TS Delivery from the stock, in stock
12Х18Н10Т-ТС-1 Delivery from the stock, in stock
10X17H13M2T EI448 1.4571 316Ti X10CrNiMoTi18-12 Delivery from the stock, in stock
20Х23Н18 EI417 1.4845 310S X12CrNi25-21 Delivery from the stock, in stock
06HN28MDT EI943 1.4539 904L X3NiCrCuMoTi27-23 Delivery from the stock, in stock
06HN28MDT 926 1.4529 N08926 X1NiCrMoCuN25-20-7 Delivery from the stock, in stock
06HN28MDT 926 1.4529 904L X1NiCrMoCuN25-20-7 Delivery from the stock, in stock

Relevance

Large diameter stainless steel pipe has high strength and anti-corrosion characteristics. It is an indispensable element of gas and oil industry. Such pipes are used for industrial tanks, organization of main pipelines, etc. Large-diameter pipes are strategic products for our country, the key factor for providing independence of domestic enterprises from the world market conditions for metal processing.

Production

Sheet metal is supplied to the preparatory workshop, where it is cutted and plasma cut, after that it is delivered to the receiving table of bending machine and further rolled into shells. Finished shells are longitudinally welded with semiautomatic welding machines under inert gas or automatic welding under flux. Obtained large-diameter tubular billets are inspected for geometric parameters, quality of welds and calibrated. Assembly then takes place. The shells are docked lengthwise from several pieces and welded with circular seams on the assembly stand. Finished pipes undergo final inspection for quality of welded joints and geometric dimensions, after which quality certificate is issued.

Application

Large diameter pipes, metal cones and bends are widely used by modern industry for trunk pipelines, industrial vessels, trunk pipeline casings, bridge supports. Large-diameter longitudinal welded pipes (720 - 900 mm and more) are in steady demand from oil refineries, machine-building enterprises, ore-dressing and bridge-building plants. They also find their place in sewage and drainage systems, at the junctions of heating systems.

Stainless steel pipe grades

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

Unlike large manufacturers, Evek GmbH can manufacture and deliver small batches of pipes, which significantly reduces lead times. The latest technology makes it possible to quickly convert equipment to produce pipes of any diameter. We hope that our experience in manufacturing will help speed up the implementation of your plans.

Buy at the best price

Evek GmbH stocks a wide range of large-diameter tubes. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of the products; compliance with parameters, surface quality. Attached the results of ultrasound testing for no shrinkage friability, cracks, bubbles, slag inclusions; the terms of execution of orders are minimal. Wholesale customers receive preferential discounts.