Description of Stopper:

The stopper is a functional material made of refractory material, which is mainly used in the tundish. The use of the stopper can reduce the occurrence of incidents and improve the quality of the billet. An argon blowing hole can also be designed in the integral stopper to blow argon to the submerged nozzle to prevent the nozzle from being blocked.

The stopper has the advantages of good erosion resistance and erosion resistance, stable flow control during casting, tight closure after casting, etc.

Technical Parameter of Stopper:

Physical and chemical indicators:

Item Index
SB45 SB40
Al2O3  % ≥45 ≥40
C  % ≥20 ≥25

Flexural Strength  MPa

≥5.5 ≥5.5
Apparent porosity   % ≤19 ≤19
Bulk density  g/cm3 ≥2.36 ≥2.2

Head Part:

Item Index
MC65 MC60 AC70 AC65 AC60 MA70 MA65
Al2O3  % / / ≥70 ≥65 ≥60 / /
MgO  % ≥65 ≥60 // / / / /
Al2O3+MgO % / / / // ≥70 ≥65
C  % ≥9 ≥12 ≥9 ≥12 ≥15 ≥8 ≥10
Bulk density  g/cm3 ≥2.45 ≥2.4 ≥2.65 ≥2.6 ≥2.55 ≥2.6 ≥2.45
Apparent porosity  % ≤19 ≤19 ≤19 ≤19 ≤19 ≤19 ≤19


Why choose us?

1.Abundant Experience. Rongsheng Group have over 20 years experience in the refractory industry and we have a deep understanding of the materials and applications we work with. We can provide expert advice and guidance to help customers find the best solutions for their needs.

2.Quality products. We pride ourselves on providing high-quality refractory products that are made to last. Our materials are carefully sourced and tested to ensure they meet our strict standards.

3.Competitive Price. We offer competitive pricie on all of our products without sacrificing quality and make the products competitive in your market.

4.Customization. We understand that every customer is unique, which is why we offer customized solutions tailored to their specific requirements. Whether it’s a custom shape or size, we can work with customers to create the ideal product for their application.

5.Safety. We take safety seriously and ensure that all of our products meet safety standards. Safty packing, prompt delivery time, and excellent after-sales services.

6.Large stocks. With a large stock of products on hand, we can better serve our customers, save money, and gain a competitive edge in their industry.

7. Overall solutions. We offer optimal and comprehensive solutions to supply the necessary refractory material for your high temperature kiln.

8.Long-term relationships. We believe in building long-term relationships with our customers based on trust and mutual benefit. We are committed to providing ongoing support and service to ensure customer satisfaction. Rongsheng Refractory can be used in many fields of steel, nonferrous metals, glass, cement, ceramic, petrochemical, machinery, boiler, light, and power industries. What’s more, Industrial distributors, refractory contractors, sales agents, trading companies, and refractory consultants can all benefit from promoting and selling our top-of-the-line refractory products. With a focus on durability, longevity, and performance, our products are designed to exceed your expectations and provide your customers with the best possible results.

So choosing us is the right choice for you.If you are interested in our products or if you have any question, pls feel free to contact us at any time. We will reply as soon as possible.

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