Reducing and Sizing Mill (RSM)

The reducing and sizing mill(RSM) is arranged between the finishing blocks and high speed pinch roll & laying head. 

It adopts split structure and independent transmission which makes it easy to manufacture and maintain. It also improves the internal structure and surface quality of the finished product, and has the advantages of high-speed and controlled rolling and quick change of TC rolls.

Roll Box of RSM

Reducing and Sizing Mill
Wire rod SpecificationΦ5.5-Φ20
Max rolling forceReducing 330kn Sizing 130kn
ArrangementTop-cross No-twist
Roll diameterReducing 230mm Sizing 150mm
Rolling temperature≥750℃
Rolling speed115m/s

Equipment application

Guangdong Daxing Iron and Steel Industry Co., Ltd.
Ansteel Group
Guangdong Taifeng Steel Co., Ltd.






Differences Between

RSM and Finishing Block

• For RSM, The rolling force (KN) will be higher than finishing blocks.

• More flexible than finishing blocks

• Lower prices for spare partsLower power for each RSM`s motor(Low voltage motors can be used)&Lower Electrical Investment

• Lower transmission energy consumption and no-load power

• The bypassing RSM can be stopped to reduce energy consumption and save energy

• When an RSM fails or undergoes maintenance, it can be bypassed or directly replaced with a new block

• Lower prices for spare parts

Outstanding Structure of RSM

• The new high-speed RSM employs dual lubrication systems for the bevel gearbox and roll box, ensuring more thorough equipment lubrication while increasing the number of return oil holes. This effectively eliminates machine burning caused by inadequate lubrication and prevents equipment oil leakage due to enhanced oil pressure and poor return oil flow.

• The cooling water pipes of the high-speed RSM are made of aluminum alloy and designed with a “Snap-On” mechanism, facilitating installation and maintenance. This design allows for easy removal of impurities and blockages in the water circuit and enables swift handling of steel pile-ups.

• The panel thickness of the roll box in the high-speed RSM is 110mm (contrasted with 80mm thickness in other enterprises), and it undergoes nickel-phosphorus alloy plating to prevent corrosion and calcification caused by local water quality. This enhances rolling rigidity and hardness while reducing spare parts wear.

• The bevel gearbox of the high-speed wire rod reducing sizing mill employs a “double long shaft” design for greater stability of the bottom support. The input shaft diameter is increased to ∮145mm (compared to 100mm in other enterprises), enhancing rolling force. Additionally, separate lubrication for gears reduces the incidence of accidents and saves production costs.

• The high-speed RSM adopts a single pass type, facilitating continuous rolling with the preceding finishing block mill and enabling low-temperature rolling.

important things you should know

Questions And Answers

We are a professional hot rolling mill manufacturer with 24 years of experience.

We specialize in providing tailor-made solutions for high-speed wire rod and bar hot rolling mills, as well as offering turnkey project services.

Quality is our lifeline.

Hangji boasts a comprehensive quality assurance system along with an exceptional quality management team. We adhere to the practice of conducting final inspections and trial operations before shipment.

Simultaneously, we have obtained international certifications for quality systems, including ISO, BV, and SGS.

We have officially established our presence on two B2B platforms (Alibaba, Made-in-China) and operate through two official websites (hangjirollingmill.com, xawkd.com).

All product graphics and videos showcased are original creations by our company. Kindly exercise caution on other platforms to avoid potential deception.

Since 1998, Hangji has been exporting its products and services to over 12 countries and regions, including but not limited to China, Malaysia, Russia, Thailand, South Africa, India, Ethiopia, the Philippines, Vietnam, Indonesia, and more.

Globally, Hangji has successfully completed over 50 wire rod and bar production lines. Notable clients include Ansteel (China), SinoSteel(China), Yazd Factory (Middle East), Chandan (India), among others.

Hangji’s factory is located at Xi’an Weikeduo Electrical and Mechanical Equipment Co., Ltd., No. 18, Jinggao South Road, Xi’an City, Shaanxi Province, China.

Explore our factory through the following links:

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Factory Video

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Factory Location

We extend a warm welcome to customers from both domestic and international markets to visit us. Additionally, we encourage our clients to consider online video conferencing as an effective means to address any queries or concerns.

Please provide the following details via email or any other convenient means so that we can recommend suitable solutions and layouts for your project:

1. Project Scope:
Turnkey project, specific equipment, or individual parts needed?

2. Raw Material:
Type of raw material (billets or scrap) and its size?

3. Finished Product:
Type of finished product (wire rod or bar) and its dimensions?

4. Reheating Furnace Requirement:
Is a reheating furnace required, and if so, what fuel will be used?

5. Production Scale:
Your planned annual output in tons and anticipated working hours?

6. Factory Space:
Available factory area for the project?

Providing this information will help us tailor our recommendations to meet your specific needs.