Cast blast lined pipe and fittings

Cast blast lined pipe and fittings is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

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Cast Basalt is a mineral of exceptionally high abrasion resistance, unlimited resistance to moisture, high compressive strength and resistance to virtually all acids and alkalis and is completely corrosion free. Cast blast is produced by melting selected natural basalt broken into sizes of 20-50 mm in shaft furnaces at temperatures around 1,300C, following by casting at which the melted basalt forms uniforms pherolithic crystals hence producing its typical physical properties, in particular its exceptional hardness and wear-resistance.

Cast basalt reaches a value of hardness of 8(min) on the Moh’s hardness scale. For comparison: the highest value10is only attained by diamonds. By virtue of these properties, the silicate cast basalt provides outstanding protection against abrasion and scrubbing.

However, it is marked by ascertain sensitivity to impacts. Under Normal services conditions, cast basalt withstands temperatures up to approx. + 350C or-40C. However Cast basalt should not be subjected to temperature shocks.

Sizes: Cast basalt produces are manufactured as tiles, from pieces and segments. Straight pipes are spun-cast, available for nominal bores of 32 to 600 mm with the wall thickness ranging from 20 to 30mm and a standard length of 500mm.samller nominal bores of straight pipes, pipe segment for radial of 40 to 3,000mm of various angles, as well as special form piece linings are predominantly sand-cast. The standard wall-thickness is 20mm. depending on the respective quantity, steel moulds can also be used, the wall thickness in those cases usually being 30 to 40mm.

Main Specification Of Cast blast lined pipe and fittings
Cast Basalt Pipe DN
Standard Steel Pipe OD
Cast Basalt Thickness


80 159 25 4000
100 168 17.5

125 195
150 219
175 245 6000
200 273
225 300
250 325
275 345
300 377
350 426
400 478 20
450 529
500 600 25
550 650
600 720 30 6000
650 770
700 820
750 870
800 920

其他规格的钢管内衬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.

  1. Fused cast basalt surfaces remain smooth and low in friction when used over time, thereby offering the benefit of low caking.
  2. Fused cast basalt provides excellent protection against the following abrasive media: ore - sinter - ash - slag - sand - coal - clinker.
Comparision Chart

Comparison of Ceramic lines with few other materials under standard conditions :

Approx life ( Months )
Mild Steel
Cast Iron
Cast Basalt

Ceramic lined equipment and bends:

Hard & Compact Smooth & Inner Withstands High-Abrasion & Corrosion In any of the process industries especially Sled and Cement corrosion and abrasion lead to significant downtime of the plant. Further, the useful life or the equipment itself may get impaired because of the high abrasive nature of the materials being used. Thus, ‘wear mechanism’ results in hut down, replacement, etc., which is costly, resulting in loss to tilt: tunic of millions of dollars.


Material Thickness(mm) Approx. Life ( Months )
Mild Steel 10 3-5
Cast Iron 20 6-8
Ni-Hard 20 12-14
Cast Basalt 30 20-25
Ceramic 10 35-40

Technical Details: