Marble square Is a square marble fixture, has the function of parallelism and perpendicularity checking, is the more common type, different times, which is not the point of inspection and processing tools, they are mainly measured, tested or manufactured stone to build a parallel effect to achieve perfect parallelism and perpendicularity of the workpiece. Because of this, they are among the many stone artifacts, there are some professional effects. Marble square foot is parallel to the vertical box combination used for testing at right angles, suitable for high-precision machinery and equipment inspection and not perpendicularity between machine check. Marble square is to use natural marble processing, and marble are recrystallized limestone, mostly CaCO3. Limestone at high temperature under high pressure soft and mineral changes again in the crystallization of marble. Marble is original rock of the crust after high temperature and pressure within the Earth's crust is formed of metamorphic rocks. Role of crustal stress of the qualitative changes in the rock, that is the original rock structures, construction and mineral content change through qualitative change the formation of the new rock known as metamorphic rocks; the marble is composed of calcite, limestone, dolomite and serpentine form. Its main component calcium carbonate, accounted for more than 50% because of marble are impurities and calcium carbonate, carbon dioxide in the atmosphere, carbon, the role of water vapor are also prone to weathering and erosion, and make the surface very quickly lose its lustre. Marble mainly for processing into various shapes, plates and so on; so the marble square with no distortion high hardness wear resistance strong, abrasion-resistant, high temperature and other characteristics of marble square plane precision, vertical standard for GB6092-85.

Marble square Suitable for industrial production and laboratory measurements. Physical properties: specific gravity: 2970-3070kg/M3. Compressive strength: 2500-2600kg/cm3. Elasticity: 1.27-1.47x106N/mm2. Water absorption: 0.13%. Shaw hardness: above HS70.

Main mineral elements escape the stone, feldspar, a small amount of olivine, biotite, and trace amounts of magnetite, black color, well-structured code, after millions of years of aging, the texture is uniform, good stability, high strength, high hardness, able to remain under heavy load and high precision.

Granite box/

Granite box/Marble box: After rigorous physical tests and selection of granite materials ,Crystal fine ,Hard. Because granite is non-metallic materials, and no magnetic response, there is no plastic deformation. Its high hardness, good accuracy.

Manufacturers supply the real thing: our factory is cast iron platform tools, marble platform measuring tools and other products, with a complete and scientific quality control system. Yongjun measuring integrity, strength and quality of products recognized by the industry. Welcome all friends to visit and guide and negotiate business.

Size: GB specifications measuring tool factory for many years with cash, after we receive your order and shipped within 48 hours of non-standard gauges can be customized, making short, please rest assured purchase.

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1, the product quality is guaranteed for 12 months, supplier during the warranty period due to the design, technology or material defects caused by quality issues should receive notification within 12 hours to give a written reply. And free of charge repair or replacement of the product. Approval of products, replacement, repair warranty service.

2, establish quality files, track return visits. Product life-long maintenance, only simple materials and labor costs, and the old for the new.

3, actively cooperate with the user improve the site operation and maintenance of the product, providing free consulting services. May at any time provided at cost to the user of our products spare parts and accessories.

4, mosaic platform or multiple device installation, commissioning, on-site technical services, led personally by the technical expert on-site services, solve a variety of problems.

5 with regard to shipment: product is packed in non-customized products single and 50kg products send ordinary Express, generally within 72 hours of arrival; single and 50kg products logistics and distribution, your preference for cities where there is a through line, remote or small towns are trucking logistics distribution, General delivery time for 4-7 days. Shipping cost actually offer subject to logistics companies, shops for sale prices do not include shipping charges. If your special request express, air and rail courier at your own expense.

From its inception, has more than 20 years of production experience and advanced production technology. High quality products and good service to win customers alike. Our standard inspection gauges are all in stock, special products custom-made, period of 15 working days. Support measuring all staff are invited to welcome the new and old customers to visit our factory, visit your valuable opinions and suggestions to the canton.