Tangshan Jinlin cement is better than Changli Jieshishan brand cement.

Last year, the country promulgated a new cement specification: GB 175-2007 "General Portland Cement"; However, the type of cement is still the same, and there are some changes in specifications:

Pⅰ and Pⅱ are portland cement.

Portland cement

Phosphogypsum and phosphogypsum are slag portland cement.

Pozzolanic silicate cement

Fly ash portland cement

Composite portland cement

Moreover, it should be noted that this dot ""is placed in the middle of letters, which is a separator, and the standard writing is in the middle;

Generally, 32.5 and 32.5R are removed from silicon, which is a common specification. Previously, cement labels were represented by 325#, 425#, 525# and 625#, among which X25 represents the factory label, which ensures the service life of half a year, and the actual use labels are 300, 400, 500 and 600. Never produced 225# cement. The cement label means that the compressive strength of the cement test block after 28 days of solidification is 325 kilograms per square centimeter, but now the compressive strength has been changed from MPA (megapascals) to P.O 32.5, indicating that the compressive strength of ordinary portland cement is 32.5MPA, P.S 42.5, indicating that the strength of slag portland cement is 42.5MPA, and so on. In addition, there is no P.P. pozzolanic cement and P.F. fly ash cement.