PressLondon, April 22, 2024

World’s Largest Push-Pull Pickling Line Produces First
Coil at Tangsteel, ChinaPrimetals Technologies has implemented a push-pull pickling line for strip thicknesses from
1.8 to 15 millimeters and process speeds of up to 200 meters per minuteEnables a very wide product mix usually possible only with two conventional continuous
pickling lines
In-line skin-pass mill for enhanced control of strip flatness

Primetals Technologies has recently implemented the world’s largest push-pull pickling line (PPPL) atChinese steel producer HBIS Tangsteel’s steel plant in Laoting, Hebei province, China. The first pickledcoil was successfully produced in December 2023. Primetals Technologies provided the full mechanicaland electrics and automation scope and was responsible for engineering as well as advisory services forthe implementation.
Extremely Wide Product Range
The core aim of Primetals Technologies’ push-pull pickling line is to enable an extraordinarily wide
product range in terms of strip dimension, steel grade properties, and production capacity. This isnormally achieved by operating both a conventional continuous pickling line and a PPPL in parallel. As aresult, Primetals Technologies’ PPPL offers a clear advantage over conventional push-pull pickling lines
from a flexibility perspective.
HBIS Tangsteel’s PPPL features an in-line 4-high single-stand skin-pass mill. A flatness control system
adjusts the mechanical properties by allowing for controlled elongation. Thanks to the skin-pass mill,
PPPL operators have even more control over strip flatness.
Maximized Throughput
Supported by an innovative solution for automated analysis and control of the pickling process,personnel at HBIS Tangsteel now have an extensive overview of all aspects of the process and are able
to control it in a highly precise way. A part of the comprehensive Level 2 automation solution, the system
is backed by a sophisticated pickling software model that considers numerous parameters related to theincoming strip. It was designed to ensure optimal operating conditions regarding temperature, pickling

Primetals Technologies, Limited
A Group Company of Mitsubishi Heavy Industries
Communications

Press reference number: PR2024013017en

Chiswick Park, Building 11, 566
Chiswick High RoadW4 5YS London
United Kingdom
Page 1/3

levels, flows, and turbulence. The application of the pickling model leads to a major increase inthroughput capacity while ensuring optimal energy use and minimized consumption of pickling fluid.
The PPPL also features a turret-head-type side trimmer processing thicknesses from two to eight
millimeters. This type of highly effective trimmer increases the throughput and maximizes strip-edge
quality.
Ships to more than 100 countries
The backbone and largest steel subsidiary of HBIS, HBIS Tangsteel is the biggest state-owned iron andsteel enterprise in Tangshan. The main products of Tangsteel are: hot-rolled and cold-rolled sheet,galvanized sheet, medium and heavy plate, as well as bar, wire, and section products, which are widelyused in automobiles, appliances, machinery manufacturing, infrastructure, bridge construction, and othersectors. The products are shipped to more than 100 countries across the world. Tangsteel is committed
to providing the most valuable steel materials and comprehensive service solutions for downstream
businesses.

The Primetals Technologies team, celebrating the first coil at the world’s largest push-pull pickling line(PPPL).
This press release and a royalty-free picture are available at www.primetals.com/press/
Contact for journalists:
Björn Westin, Press Officer
bjoern.westin@primetals.com
Primetals Technologies, Limited
A Group Company of Mitsubishi Heavy Industries
Communications

Press reference number: PR2024013017en

Chiswick Park, Building 11, 566
Chiswick High RoadW4 5YS London
United Kingdom
Page 2/3

Mob. +43 664 6150250
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linkedin.com/company/primetals
facebook.com/primetals
twitter.com/primetals
Primetals Technologies, Limited, headquartered in London, United Kingdom, is a pioneer and world leader in the fields of engineering, plantbuilding, and the provision of lifecycle services for the metals industry. The company offers a complete technology, product, and services
portfolio that includes integrated electrics and automation, digitalization, and environmental solutions. This covers every step of the iron andsteel production chain—from the raw materials to the finished product—and includes the latest rolling solutions for the nonferrous metals sector.
Primetals Technologies is a joint venture of Mitsubishi Heavy Industries and partners, with around 7,000 employees worldwide. To learn more
about Primetals Technologies, visit the company website www.primetals.com.

Primetals Technologies, Limited
A Group Company of Mitsubishi Heavy Industries
Communications

Press reference number: PR2024013017en

Chiswick Park, Building 11, 566
Chiswick High RoadW4 5YS London
United Kingdom
Page 3/3