Rolling Mills

Walking Beam RHF

CISDI is one of the innovators responsible for the development of walking beam RHF technology. More than 80 walking beam RHFs have been designed and put into use. CISDI industrial furnace has made important contributions to the Chinese steel industry.

Annular RHF

Over the past decade, dozens of Annular RHFs have been built for reheating pipes in tube plants and reheating rolling tubes in wheel hub factories. CISDI industrial furnace has become the leading supplier for annular RHF in the domestic market.

Heat Treatment Furnaces

CISDI offer the following technologies which can be used for: continuous galvanizing, quenching, annealing, tempering, hardening, solution treatment and stainless steel bright annealing, which allows the customer to produce a product that satisfies their exact specification.

• Heat treatment furnace for pipe
• Roller hearth furnace for heavy plate furnace
• Continuous galvanizing and annealing furnace

Evaporative Cooling System and Waste Heat Recovery Technology

CISDI have developed patented and proprietary technologies for evaporative cooling and waste heat recovery, which improve the overall efficiency of the plant. These include:

• Patented technology for invention of evaporative cooling system with forced recirculation
• Patented technology for practical new walking device
• Proprietary low drum evaporative cooling system in natural circulation
• Proprietary waste heat recovery technology with lower waste gas temperature
• CISDI has developed its hydraulic computation software for circulation cooling water

CAE Technology

Accurate finite element analysis is used to ensure design accuracy and efficiency. CAE technology is used to analyze the reliability and safety of products, to optimize the design and improve the product quality. Virtual and multi-condition simulations are used to minimize R&D costs, shorten the R&D cycle to bring new products to market.

Modified Breakdown Mills

CISDI have developed new model breakdown mills (BDCD850, BDCD1,000, BDCD1,350). These have been successfully implemented into the Xingtai Steel quality wire and rod mill, NISCO medium section mill and NISCO Jinxing heavy section mill.

Serialization Mill with Housing

A wide range of high-rigidity housing mills are available, including HSCD700, HSCD610, HSCD560, HSCD480 and HSCD430. These six models can be used in a wide array of applications across the rolling process from acting as a roughing mill through to acting as a pre-finishing mill in either continuous rod rolling or high-speed wire rolling.

Rod & Wire Reducing & Sizing Technology

CISDI offer patented reducing and sizing mills for rods and wires equipped with front and rear water coolers. This contributes to better grain size and dimensional accuracy of medium and small sized rods and high-speed wires. CISDI has good knowledge of reducing and sizing technology for rods, wires and large coils, and is leading the field in China especially for alloy steel products.

Flying Shears

CISDI have developed a range of FSCD flying shears for long products, which are applicable for rods as large as Ø130mm and triple-cutting ribbed bar as small as Ø8mm. The cutting speed varies from 0.5m/s to 24m/s. The flying shears can cut premium long products such as straight carbon steel, bearing steel, spring steel and mould steel. The flying shears have been successfully implemented in the premium rod rolling line in Pangang Changchen Steel.

Split Rolling and Controlled Cooling

CISDI provide equipment for double-splitting, triple-splitting and quadric-splitting with a minimum splitting size of 8mm. CISDI can provide controlled cooling technology for rods to enhance the rebar strength, which has been successfully applied in the wire and rod mill of KINSTEEL (Malaysia).

Integration of Three-Roll Mandrel Mill System

Through technological innovation, CISDI have developed the most advanced three-roll mandrel mill system in the world.

Off-line Analysis Software for Three-roll Mandrel Mill

Using finite element techniques, CISDI has developed a software package that can be used for accurate offline analysis. The system provides several models which can be used for analysis, these are as follows:

• Geometrical model
• Mandrel model
• Kinetic model
• Tube extracting model
• Mechanical adjustment calculation
• Roll gap set up model

Micro-Tension Reducing Mill

Three-roll micro-tension reducing mill developed by CISDI features leading equipment performance and electrical control in China. The reference list covers Ø114, Ø159 and Ø273 line.

Accurate Pipe Layer Positioning Device

CISDI created the pipe layer positioning device to bridge the technological gap in the market. It is being used on the Ø273mm PQF mill line for Anhui Tianda Steel.

Automation Control for Tube Mill

CISDI can provide all-round services such as EIC system integration, basic automation design, process automation design and software development, etc. for customers worldwide.

Continuous Pickling Line Coupled with Cold Tandem Mill

CISDI can supply basic engineering, detail engineering, software programming and commissioning for continuous pickling lines coupled with cold tandem mills. Turbulent pickling and five-stand six-high tandem mill has been implemented into the 1450mm cold sheet/coil line for Tangshan Fengnan which was supplied by CISDI on an EPC basis. CISDI have replaced foreign companies in being the leading supplier for cold strip mills in China.

Six-High Single-Stand Reversible Cold Rolling Line

CISDI have provided the fastest six-high single stand rolling mill in China with a rolling speed of 1200m/min. This was provided by CISDI on an EPC basis.

Continuous Annealing and Galvanizing Lines

CISDI are the leading designers in continuous annealing, continuous aluminizing/galvinizing and continuous galvanizing/annealing in China.

Skin Pass Machine

Skin pass machines developed by CISDI have been applied in many continuous galvanizing projects, making us the leading supplier in the world.

Hot Strip Mill Technology System Integration

CISDI are the ideal supplier for hot strip mills, with abundant experience in EPC, EP, independent system integration and overall technical responsibility in this field. CISDI have many proprietary products in this field, ensuring that the quality is up to the internationally advanced level.

Flying Crank Shear

CISDI designed the largest flying crank shear in China; it can cut through high-strength API5L-X100 pipeline steel of 60mm thickness and 2,150mm width.

Hydraulic Servo System for Hot Strip Mills

CISDI have developed a fully proprietary hydraulic servo control system alongside the 1,750mm hot strip mills for Xinjiang Bayi Steel and Tiantie. The successful implementation of this technology has filled the technological gap in China.

Efficiency Laminar Cooling Device

CISDI patented efficiency laminar cooling device is comprised of three zones: intensified cooling zone, micro zone and trimming zone. With maximum cooling intensity of 170m3/m2h. It can be applied in various patterns to adapt to micro-alloy high-strength steel, high-strength steel with ultra-fine grain, DP, TRIP and MS rolling.

Skin Pass and Coil Dividing Line

CISDI provide leading skin pass mill technology, offering solutions for a variety of sizes including: 1,450mm, 1,500mm, 1,580mm, 1,750mm, 1,780mm, 1,880mm, 2,050mm, 2,250mm. The skin passed strip can have tensile strength up to 1,200MPa.

Heavy-duty Downcoiler

CISDI have designed the most powerful downcoiler in China for high-strength pipeline steel API 5L X 100 of 20mm (thickness) X 2,150mm (width).

Air Mist Cooling in Heat Treatment

CISDI developed the innovative air mist cooling plant for plate heat treatment.