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Quick Details

  • Place of Origin: Henan, China (Mainland)
  • Brand Name: APEX
  • Model Number: P.C 42.5
  • Color: Grey
  • Feature: Acid-Proof, Anti-Algae, Decorative, Sulfate Resistant
  • Main Raw Material: Silicate
  • Type: Oil Well Cement
  • Hardening Feature: Rapid Hardening
  • Heat of Hydration: Moderate Heat
  • Strength Grade(Mpa): Other
  • Magnesium oxide: 2.0%
  • Sulfur trioxide: 2.6%
  • Loss on ignition: 1.3%
  • specific surface area: 341m2/kg
  • hydration heat: 275KJ/Kg
  • Stability: standard
  • time of setting: 275min
  • Compressive Strength: 52.4MPa
  • Flexural strength: 8.3MPa
  • Function: construction grade grey portland cement 42.5 r

Packaging & Delivery

Packaging Details The construction grade grey portland cement 42.5 r usually packed in standard bags, we have 50kg 1ton 2on for ecah bag.
Company Information

Hebi city thermal instrument factory is a manufacture of "Apex brand autoclave"professional products. Leading products 42.5,52.5 32.5 in line with Portland cement and Portland cement, p. II 42.5 Portland cement, has quick hardening, highearly strength, durability, and strong resistance to permeability, low alkali content, to speed up the construction schedule. The company has a sound quality assurance system, advanced management mode, the production of high-quality materials, scientific process guidance, advanced production technology and rigorous testing procedures to ensure product quality.


Product overview:
First, level and type of  portland cement
Cement is divided into the following levels (a, b, c, d, e, f, g, and h) and types (ordinary type, resistance and high resistance to sulfate in type >:according to market demand, our company mainly produces g-and d-level high sulfate resisting oil well cement.


Second, the characteristics of  construction grade grey portland cement 42.5 r :
Is the right setting time, low density, consistency, used in the preparation of ready-mixed concrete oil wells has a good resistance to settlement, pump ability,stability and mobility. Will inject predetermined (temperature, pressure)section, rapid hardening and produce certain mechanical strength. Concrete curing has excellent impermeability, stability and corrosion resistance; with high intensity, low-alkali, low-heat performance: external agents flexibility,meet the needs of oilfield cementing operations cost reduction.

Third, construction grade grey portland cement 42.5 r  applications
Use: cement used in oil and gas well cementing work. Class g cement is widely used in oil and gas drilling, cementing, cementing operations can also be used in wells, wells, sewage treatment and geothermal wells to seal.
Use: slurry in the process of injection wells must have a certain degree of mobility and the right density, after the water and mud into the well, quickly condenses and reached considerable strength in the short term; the hardened cement paste should have good stability and impermeability, corrosion resistance, etc.
Note: complex oil and gas wells, in order to meet the specific conditions of different oil and gas wells, and sometimes to add some additives in the cement,such as weight agents, reducing agents or retarder.


Technical specifications of construction grade grey portland cement 42.5 r   :


1. 42.5 Moderate heat portland cement:

NO.technical demandGB10238-2005 ruleThe internal control index  company value
1Magnesium oxide≤5.0%≤4.0%2.0%
2Sulfur trioxide≤3.5%≤3.2%2.6%
3Loss on ignition≤3.0%≤2.5%1.8%
4Specific surface area≥25m2/kg≥ 28m2/kg341m2/kg
5The heat of hydration3 days≤ 251KJ/kg
≤ 245KJ/kg
7 days≤ 293KJ/kg≤ 245KJ/kg275KJ/kg
6Setting timeInitial setting≥60min≥ 90min60min
Final setting≤ 720min≤ 600min 
7stabilityQualified Qualified Qualified 
8Compressive strength 3days≥12.0Mpa≥ 16.0Mpa24.7Mpa
 7days≥ 22.0Mpa≥ 26.0Mpa33.9Mpa
 28days≥ 42.5Mpa≥ 46.0Mpa50.1Mpa
9Flexural strength 3days≥ 3.0Mpa≥ 3.5Mpa4.9Mpa
 7days≥ 4.5Mpa≥ 5.0Mpa6.3Mpa
 28days≥ 6.5Mpa≥ 7.0Mpa8.5Mpa


2. 42.5 Low heat portland cement:
NO.technical demandGB10238-2005 ruleThe internal control index  company value
1Magnesium oxide≤5.0%≤4.0%1.8%
2Sulfur trioxide≤3.5%≤3.2%2.4%
3Loss on ignition≤3.0%≤2.5%1.7%
4Specific surface area≥250m2/kg≥ 280m2/kg311m2/kg
5The heat of hydration3 days≤ 230KJ/kg
≤ 225KJ/kg
7 days≤ 260KJ/kg≤ 255KJ/kg245KJ/kg
6Setting timeInitial setting≥60min≥ 90min243min
Final setting≤ 720min≤ 600min 
7stabilityQualified Qualified Qualified 
8Compressive strength 7days≥13.0Mpa≥ 18.0Mpa25.9Mpa
 28days≥ 42.5Mpa≥ 46.0Mpa49.1Mpa
9Flexural strength 7days≥ 3.5Mpa≥ 4.0Mpa5.0Mpa
 28days≥ 6.5Mpa≥ 7.0Mpa8.2Mpa





Packaging & Shipping


 Market application of construction grade grey portland cement 42.5 r :




   Package of construction grade grey portland cement 42.5 r :



Our Services


Minimum Order Quantity:1 Ton
Delivery time:15 days
Payment Terms:T/T or L/C, west uninon, paypal, T/T first.
Warranty:accessories for free for one year, lifetime technical support.


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