The world No. 1 in crude steel production steel plant, over 70% of the HSS for bar and wire are from us.

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WE can provide characteristic service and differentiated products according to the different conditions of rolling mill.

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We have been serving & solution for these steel mills

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Enhanced HSS rolls

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Slitting HSS rolls

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High alloy HSS Rolls

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KOCKS- roller ring

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What we do

High Speed Steel Rolls (HSS rolls)

The high-speed steel rolls produced by our company are widely used in:

Finished stand (high-speed steel roll), pre-finished stand (high-speed steel roll), slitting stand (slicing high-speed steel roll), pre-slicing stand (slicing high-speed steel roll).

High-speed wire rod mill pre-finishing line. Hot rolling narrow strip mill finishing line.

Spring flat steel rolling mill finishing rolling stands and angle steel, channel steel and other small section steel rolling mills.

Enhanced high speed steel rolls

Slitting high speed steel rolls

High alloy high speed steel rolls
high speed steel rolls
KOCKS- roller ring
High line prefinishing roller ring
Pinch roll ring
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System guarantee for sustainable development

Ability to consistently provide products and services that meet customer and regulatory requirements.

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Who we are

Professional high speed steel roll manufacturer

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One of the largest domestic enterprises specializing in the production of high-performance high-speed steel products.

The company’s production base covers an area of about 100 acres. The annual production capacity of high-performance high-speed steel products to 15,000 tons.

The company has nearly 300 employees, including 15 senior technical personnel. It has more than 50 sets of intermediate frequency furnaces, centrifuges, heat treatment furnaces, and numerical control processing equipment. It also has a physical and chemical analysis center equipped with various advanced inspection and testing equipment such as direct-reading spectrometers.

We sincerely hope that our products will make a greater contribution to improving the product quality and economic benefits of users. We are determined to become a high-quality and loyal partner of the majority of users in the steel industry.

The company has established long-term close cooperation relations with Beijing University of Technology, Beijing University of Science and Technology, General Steel Research Institute and other institutions. Over the years, we have been working together to develop and innovate the production process and materials of high-performance high-speed steel. The high-speed steel rolls and roll rings produced by the company have successively obtained national patents

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86 (411) 84174804
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Established in 2007 professional high speed steel roller

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Advanced inspection and testing processing equipment

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Covers an area of 100 mu and has more than 300 employees

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The products are used in more than 200 rolling production lines

Why Choice Us

Provide Professional Solutions Through Our Technical Team

Purchase Rolling mill rolls

The Products Are Used In More Than 200 Rolling Production Lines

  • We have an excellent technical service team
  • The production process and before leaving the factory, all performance indicators are strictly tested, and the professional QC team controls according to the process.
  • The product is sold, the quality is tracked throughout the process, and the installation and use are guided throughout the process.
  • Our products have been running on more than 200 production lines and have rich experience
  • We can provide characteristic service and differentiated products according to the different conditions of rolling mill.
  • Stick to the agreement, do not do anything that violates the agreement, stick to the spirit of the contract to the end.

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After passing the inspection with LMMGROUP, a trial plan was proposed for the company's high-speed steel rolls in May 2019. The planned number is 4 pairs (8 pieces), and the trial has been completed. Although the price of LMMGROUP is 1.22 times that of the current rolling stock, through this trial, the data shows that the amount of steel passing through is more than 1.3 times higher than the current rolling stock, and the rolling groove wear of the off-line rolling is better than the current rolling stock. If Long-term use in batches also reduces the amount of turning per turn and increases the number of rolls used. For the trial specification, we chose the medium 14 specification with a higher accident rate, because the advantages of the roll were not fully exerted due to batch reasons and the impact of production accidents. According to the trial results, it is inferred that the rolling series will be better when used in 16-20 specifications.
A STEEL
A STEEL
On September 10, 2015, in the rolling process of the steel rolling mill, the LMMGROUP high-speed steel bar rolling experiment was carried out on the first bar line C12 to four cuts, and C14 three cuts to K1, K2, K3, and K4. According to the trial situation, The average amount of steel passing through LMMGROUP rolling is about 50%-60% of the alloy rolling spoke. The processing difficulty of high-speed steel is low, and the processing cost is lower than that of the alloy rolling wheel. Our factory can achieve normal processing.
B STEEL
B STEEL
LMMGROUP provides our factory with 8 @380×650 high-speed steel rolls for K1 (finishing), K2 (pre-finishing), K3 (slicing), K4 (pre-slicing), which are used to make 12mm rebar. After the first online use: K1 single-channel steel throughput averaged 410 tons, K2 single-channel steel throughput averaged 840 tons, K3 single-channel steel throughput was 2860 tons, and K4 single-channel steel throughput was 2910 tons. There is no abnormal condition in the groove, and the hardness of the wheel is uniform, which is convenient for the repair and processing of the groove. During the period, LMMGROUP sent relevant technical personnel to follow up and guide on-site, and the effect was better in our factory.
C STEEL
C STEEL
1. According to the use situation, the use of cutting passes is more obvious, from the use of one groove per shift to the use of 3 shifts for one groove, which greatly reduces the parking time of the shift and the cost of using rolls, Reduce roll changes on night shifts.
2. High-speed steel rolls have good wear resistance, which is more obvious in the use of 15# rolls. During the production process, the strip shape control is stable, the gap between the rolls is large, and the negative deviation fluctuation is small, which is very useful for improving the quality of the finished product. good improvement.
3. At present, the ordinary roll is 0.55 yuan/ton, and the use of high-speed steel is 0.33 yuan/ton, which can greatly reduce the cost and increase the profit of the workshop.
D STEEL
D STEEL
The trial data shows that the ∮370mm high-speed steel roll produced by LMMGROUP has far exceeded the single-groove assessment value of 1,500 tons in the "Roll Ordering Technical Agreement", and the effect is good.
E STEEL
E STEEL
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