Cast basalt line steel straight pipe is composed by lined with cast
basalt pipe, outside steel pipe and cement mortar filling between
the two layers. It combines the advantages of cast basalt and steel
pipe, wear resistance, corrosion resistance, anti-high-pressure,
transportation and easy installation.
This greatly improves the products adaptive capacity of complicated
operation conditions. At the same time cement mortar is selected as
the filling material and this can make the inside surface of steel
pipe in alkali mediums. So the surface of steel pipe generates
purifying films These films can prevent being rusted.
Main specification of cast basalt lined steel pipe
| Cast Basalt Pipe DN | Standard Steel Pipe OD | Cast Basalt Thickness | Length |
|---|
| （mm） | （mm） | （mm） | （mm） |
| 80 | 159 | 25 | 4000 |
| 100 | 168 | 17.5
20 | 4000
6000
8000 |
| 125 | 195 |
| 150 | 219 |
| 175 | 245 | 6000
8000
10000
12000 |
| 200 | 273 |
| 225 | 300 |
| 250 | 325 |
| 275 | 345 |
| 300 | 377 |
| 350 | 426 |
| 400 | 478 | 20
25 |
| 450 | 529 |
| 500 | 600 | 25 |
| 550 | 650 |
| 600 | 720 | 30 | 6000 |
| 650 | 770 |
| 700 | 820 |
| 750 | 870 |
| 800 | 920 |
Other specifications of cast steel pipe lined with basalt can be
manufactured according to customer technical requirements. Suitable
for large-diameter basalt lining steel pipes with a nominal
diameter greater than 800mm. Generally, according to the running
status of the pipeline, different cement is used to fix the basalt
brick inside the finished steel pipe to complete the basalt lining
steel pipe. Its advantages are good wear resistance, wide range of
use, basically not limited by the size of the pipeline and low cost
of pipeline installation.
Cast basalt pipe can be divided into straight pipe, elbow,
three-way (four-way) pipe and variable diameter pipe, etc.
Comparision Chart
Comparison of Ceramic lines with few other materials under standard
conditions
| Material | Thickness(mm) | Approx life ( Months ) |
|---|
| Mild Steel | 10 | |
| Cast Iron | 20 | |
| Ni-Hard | 20 | |
| Cast Basalt | 30 | 20-25 |
| Ceramic | 10 | 35-40 |
The excellent performance of cast basalt lined steel pipe is that
it sets tenacity of steel pipe, abrasive resistance of cast basalt
pipe, concreteness of cement mortar in one.
Chemical substance ( weight %) of cast basalt
| SiO2 | Al2O2 | Fe2O3 | TiO2 | CaO | MgO | K2O | Na2O | FeO | P2O5 |
|---|
| 43.13-41.12 | 12.5-13.52 | 8.64-9.5 | 2.02-2.62 | 9.05-10.22 | 8.65-10.47 | 1.4-1.75 | 4.62-5.28 | 4.82-6.25 | 1.1-1.38 |
This greatly improves the products adaptive capacity in complicated
operation conditions. At the same time. Cement mortar is selected
as the filling material and this can make the inside surface of
steel pipe in alkali mediums. So the surface of steel pipe
generates purifying films. These films can prevent being rusted.
Physical performance of cast basalt products
| Category | Attribute |
|---|
| Density | 3g/cm3 |
| Compressive Strength | ≥450MPa |
| Bending strength | ≥60MPa |
| Impact strength | 1.76KJ/M2 |
| Abrasive strength | 0.07g/cm2 |
| Vickers scale | ≥720kg/mm |
| Elasticity modulus | 1.67x105MPa |
| Dilatation coefficient (60℃) | 8.92x10-6 |
| Chemical Attack Resistance | |
| 95%-98% H2SO4 | ≥98% |
| 20%H2S4 | ≥94% |
| 20 %NaOH | ≥98% |
