Production technologies

High-performance grinding machines from LOESER GmbH (Germany), a leading industrial equipment vendor, provide the quality of outer surface that meets the requirements of our domestic and international customers.

RPS 376

Year of commissioning: 2016 г.

Investments: $1 124 020

The new equipment has allowed us to boost annual capacity by eight times to 2.2 million metres.

Tubes grinded on our RPS 376 machine feature a high-quality outer surface on par with those undergoing electrochemical polishing.

RPS 377

Year of commissioning: 2020 г.

Investments: $1 829 800

When the grinder was put into operation, it doubled our annual grinding capacity to 300,000 metres.

With RPS 377 used for grinding cold- and hot-finished large-diameter tubes, we launched a new product – tubes of up to 159 mm in diameter with a ground outer surface.

Reika RRM 100 offers high-precision geometry along the entire tube length by setting the straightening parameters depending on the actual dimensions and material automatically. The straightener’s operation is aligned with the RPS 376 grinder and the Prestar line. They are integrated into an automated finishing and testing line.

RRM 100

Year of commissioning: 2016 г.

Investments: $534 760

Hourly capacity: 180 tubes.

Reika RRM 100 used in the finishing process ensures overall straightness and stable mechanical properties throughout the surface.

Our automated band saw machine with the entry and exit ends mechanised is used for cutting the ends of hot-finished billets and end products.

Band saw machine

Year of commissioning: 2018 г.

Investments: $182 980

The new equipment has an annual capacity of 200,000 tubes.

Using the band saw for trimming the ends guarantees that end faces are perpendicular. It has a positive effect on product performance.

This is an automated tube finishing and testing line featuring material handling systems and equipment for comprehensive tube testing, sampling, cutting, and labelling. Each tube entering the testing system is marked with a barcode carrying a unique number. This number is automatically identified at each testing stage. After final testing, each tube meeting all the testing criteria is assigned a unique certificate.

Prestar Projekt A20001

Year of commissioning: 2021

Investments: $2 807 490

The line deployment has increased our tube finishing and testing throughput to 750 metres per hour, or 5.4 million metres per year.

Thanks to comprehensive non-destructive testing, it guarantees that we offer our customers tubes with an excellent surface finish, high dimensional and geometric accuracy, and various types of labelling.

These modern mills are designed for tube rolling using liquid lubricants and for making long stainless tubes that meet specific requirements for the outer and inner surface quality and dimensional and geometric accuracy. The mill's distinctive rigid roll stand ensures geometric accuracy of finished products within D+/- 0.4%, S+/-5.0%.

COLD PILGER MILLS (finished tube diameter: 10–45 mm)

Year of commissioning: 2016 - 2021

Investments: $2 473 265

Annual capacity: 1.2 million tubes.

Finished tubes rolled on the mill boast geometric accuracy exceeding the requirements of advanced domestic and international standards.

Tube degreasing in an automated degreasing machine helps remove all residual grease from the tube surface. Vacuum drying has a positive impact on the surface quality during scale-free heat treatment of tubes.

HEMO degreasing machine

Year of commissioning: 2021

Investments: $2 272 730

Annual capacity: 5,900 tonnes

HEMO degreasing machine ensures tube resistance to intergranular corrosion

This furnace uses a protective hydrogen atmosphere to heat-treat tubes without any scale forming. A scale-free technology eliminates the need to restore a tube’s inner surface with chemical descaling and electropolishing.

RoDR 2000CN roller hearth furnace

Year of commissioning: 2021

Investments: $4 010 700

Annual capacity: 15,000 tonnes.

RoDR 2000CN enables us to make tubes that are not only compliant with international standards as they remain in a protective atmosphere after treatment, but also resistant to intergranular corrosion. Such products boast a stable structure and sound mechanical properties along their entire length.

New equipment was used to upgrade our non-destructive testing systems. It enables ultrasonic testing for both longitudinal and transverse defects and laminations. UKV-25.VS is a comprehensive testing system that is capable of performing ultrasonic and eddy current tests (ECT), as well as measuring tube dimensions and grit size. All parameters are indicated in a certificate issued for each tube after testing.

UKV-25.VS

Year of commissioning: 2021

Investments: $481 284

Annual capacity: 4.5 million metres.

We can provide a certificate for each tube that has been tested using UKV-25.VS. This certificate furnishes information, in both graphical and absolute form, about the tube’s surface in terms of longitudinal and transverse defects, ECT-detected flaws, actual diameter and wall thickness, and structure along its entire length.

We inspect inner pipe surfaces and sense inner eddy currents with an automated solution by Russia’s AVEK. Based on the Mentor Visual iQ video borescope by GE and the MIZ-200 instrument by Zetec (both companies are headquartered in the USA), it supports imaging and video recording during inspection (with test results linked to each pipe’s unique identifier) and a special ECT procedure for pipes to be used at nuclear power plants.

Inner surface inspector (based on Mentor Visual iQ)

Year of commissioning: 2021

Investments: $147 059

Annual capacity: 5.4 million metres.

After a pipe is examined, the customer can obtain images and video footage taken by our inner surface inspector.

ECT system (based on MIZ-200)

Year of commissioning: 2021

Investments: $213 904

Annual capacity: 5.4 million metres.

This system uses special software to automatically assess pipe quality.

A computer vision system has been deployed to identify outer surface flaws without human involvement. Used to gauge the length, width, and depth of such flaws, it can also measure a tube’s outer diameter with a set of 2D scanners to make sure it meets the specifications for 60 mm products. Coverage has overlapping to ensure that 100% of the surface can be scanned. Measurement precision is ±0.01 mm.

Flaw detection gauge

Year of commissioning: 2021

Investments: $93 583

Measurement errors for flaw dimensions (length, width, and depth) are within ±1.0% of the true size.

The system detects all unacceptable outer surface flaws, which significantly improves product durability.