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Corundum self-flowing wear-resistant refractory castable is made of corundum, super high-alumina clinker and silicon carbide as main materials, combined with composite binder, water reducing agent, dispersant, etc., and is designed by optimizing formula. This product has high wear resistance, erosion resistance. Because of its strong self-flowing force, it is degassed and leveled without vibration, thus realizing densification, good fluidity and easy construction. The materials and binders used can be selected according to the use conditions. Corundum self-flowing castable has high hot strength; Micro-expansion can reduce the gap and avoid the penetration of molten steel; The fluidity can be adjusted, and even the narrow gap can be filled by gravity. It can be directly casted into liner for use, and can also be made into prefabricated blocks by pouring or vibrating. During the large-area construction of corundum self-flowing castable, the construction should be carried out in blocks, and the area of each pouring area should be about 1.5m2. Expansion joints should be set up according to the design requirements. Expansion joints should be set in the middle of anchor spacing. Expansion joints can use 6-8 mm thick wooden boards, and the distance between the cross section of the wooden boards and the formwork should be 40-60mm. Expansion boards should be effectively fixed to prevent translocation during castable construction. Application: it is often used in CFB boiler and other thermal equipment where it is difficult to construct due to severe erosion and wear. It is suitable for filling joints around ladle wall, permeable brick seat brick, pouring molding in construction areas with complex shapes and narrow parts. It is also often used as lining material for various kilns such as boilers, hot blast stoves, heating furnaces and ceramic kilns. Tech data: ItemsIII Al2O3 (Min,%)8588 Bulk density (Min, g/cm鲁)110鈩?/p>2.852.95 815鈩?/p>2.93.0 1100鈩?/p>2.953.05 Crushing strength (Min, Mpa)110鈩冣墺110115 815鈩冣墺125130 1100鈩冣墺135140 Modulus of rupture (Min, Mpa)110鈩冣墺2324 815鈩冣墺1821 1100鈩冣墺1922China Monolithic Refractories website:http://www.ucrefractory.com/monolithic-refractories/ ha inviato un aggiornamento 3 anni, 9 mesi fa
Features:
Product Namedisposable non sterile surgical face maskBrandULF
CertificateDoc, Class I
EN 14683:2019+AC:2019 test report
ISO 13484TYPEIIR
SpecificationFor Adult 17.5*9.5cmMain materialmelt-brown fabric 33%, nonwoven fabric 67%
ApplicationGeneral medical environment, daily preventionPackage50PCS/box
Description:
Our company has been listing in the whitelist of CCCM(No 1041), obtain certificates for European CE Mark registration.
We have established our own labs, have the most important test equipment, such as BFE銆丳FE test equipment, bacterial incubator, burn-in equipment and pressure sterilizer and so on.
Meet type IIR requirement, BFE鈮?8%, Splash Resistance: 16 Kpa (120 mmHg).
Main materials: Nonwovens account for 67%, melt blown fabrics account for 33%.
Mask is suitable for wearing in general medical environment, blocking the exhalation of pollutants from mouth and nose.
Product Performance:
1. Passed EN14683-2019 test report.
2. The bacterial filtration efficiency of the mask shall not be less than 98%.
3. The ventilation resistance of air flow exchange on both sides of the mask shall not be greater than 49pa / cm2.
4. The product is not sterile.
Test report: EN 14683:2019+AC:2019
Workshop:Lab picturesChina Surgical Mask
website:http://www.ulfbiotech.com/disposable-face-mask/surgical-mask/
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