portland Cement

Our company's leading product "RT" brand Pu Si 32.5 grade, 32.5R grade, 42.5 grade, 42.5R grade, 52.5 grade, 52.5R grade cement, with the property of early high strength, high condensation hardening speed, low alkali, great anti-acid-corrosion ability, anti-freeze-thaw characteristics, in order to meet the needs of the customers we will produce Portland cement, slow setting cement, masonry cement and so on. Quality met the advanced level of similar products at home and abroad, successfully passed the ISO9001 international quality system. We sell to more than 10 domestic provinces and cities and export to Russia, Bangladesh, Africa and other countries and regions, deeply praised by the domestic and foreign users. The major raw materials for producing cement is high-quality clinker from the rotary kiln, while we have the executive standard of China (GB175-1999) and executive standard of the United Kingdom (BS12: 1989), and equipped with modern testing instruments and equipment for cement and concrete testing laboratory, we take the implementation of advanced data management, so that the product quality is stable. We can provide customers with chartering, ship in bulk, automotive bulk, and paper bag packaging services. YINGKOU RUITONG FOREIGN TRADE CO.,LTD COMMON CEMENT INTERNAL CONTROL STANDARD variety grade standard sort MgO(%) SO3(%) Loss(%) Slender extent (%) Invariability (h:min) setting time (MPa) folding strength (MPa) strength First setting final setting 3days 28days 3days 28days Common32.5Cement (p.o32.5) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 2.5 5.5 11.0 32.5 internal control standard ≤4.0 ≤3.0 ≤4.5 ≤4.0 eligible ≥2:00 ≤6.30 ≥3.0 ≥6.0 ≥16.0 ≥36.0 Common32.5Cement (p.o32.5R) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 3.5 5.5 16.0 32.5 internal control standard ≤4.0 ≤3.0 ≤4.5 ≤4.0 eligible ≥2:00 ≤6.30 ≥4.0 ≥6.0 ≥20.0 ≥38.0 Common42.5Cement (p.o42.5) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 3.5 6.5 16.0 42.5 internal control standard ≤4.0 ≤3.0 ≤4.0 ≤4.0 eligible ≥1:40 ≤4.30 ≥4.0 ≥7.0 ≥22.0 ≥46.0 Common42.5Cement (p.o42.5R) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 4.0 6.5 21.0 42.5 internal control standard ≤4.0 ≤3.0 ≤4.0 ≤4.0 eligible ≥1:30 ≤4.30 ≥4.5 ≥7.0 ≥24.0 ≥48.0 Common52.5Cement (p.o52.5) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 4.0 7.0 22.0 52.5 internal standard ≤4.0 ≤3.0 ≤3.5 ≤3.5 eligible ≥1:30 ≤4.00 ≥4.5 ≥7.5 ≥26.0 ≥56.0 Common52.5RCement (p.o52.5R) GB175-1999 ≤5.0 ≤3.5 ≤5.0 ≤10.0 eligible ≥0:45 ≤10.0 5.0 7.0 26.0 52.5 internal standard ≤4.0 ≤3.0 ≤3.5 ≤3.5 eligible ≥1:20 ≤4.00 ≥5.5 ≥7.5 ≥30.0 ≥58.0