Rubber Lined Piping

Rubber lined pipe is used to transport Abrasive Slurry solutions, Corrosive Chemicals, and many other liquids from one place to another. Since most Rubber Lined Pipe applications are for transporting abrasive slurries, we test our materials for to ensure we are providing you with the best product suited to your application.

Corrosion is a menace in operating and maintaining a Chemical Process Plant. Hence given a choice one would be tempted to dispense away with Steel all together as a material of construction for piping used in a Chemical Plant. Unfortunately it is not practical to undermine the usefulness of Steel in sustaining the Pressure and Temperature conditions normally foreseen in any Process Plant. That brings the concept of composite piping wherein an attempt is made to make use of the mechanical strength of Steel, at the same time to impart a high degree of corrosion resistance to the wetted surface of the component made of Steel.

Rubber Lined Piping

Carbon Steel Piping internally lined with Rubber is a classic example of such composite piping. Due to the intimate bonding between Rubber and Steel during vulcanizing process, it provides one of the most practical solutions in dealing with chemically corrosive fluids within the limitations posed by the endurance of Rubber for the operating temperatures.

LINING MATERIAL:
Following are the commonly used Rubber varieties in the Chemical Plant in general

  1. Natural Rubber
  2. Butyl Rubber
  3. Nitrile Rubber
Rubber Lined Fittings
Rubber Lined Fittings

LINING PROCESS:

The Rubber Lining is a process of application of liner material (normally in the form of rubber sheets or extruded tubes) over the internal surface of the steel piping followed by vulcanizing at the required temperature to attain the desired degree of hardness.

rubber lining workshop
rubber lining workshop

The Lining Process generally consists of following steps

  1. Inspection of Piping Items for verifying its fitness for the purpose. The aspects which need to be considered with respect to above, are the accessibility of the internal surface for application of lining and suitability of the internal contours for achieving a defect free lining.
  2. Surface preparation in terms of removal of scale/ rust either by wire brushing or sand/ shot blasting.
  3. Application of Rubber Solution/ lining material
  4. Curing of Liner material (i.e. vulcanizing) at the required temperature either by employing hot water or steam. The vulcanizing of Rubber could also be done at ambient temperature by adding certain accelerators along with the filler materials used in the Rubber Stock.
  5. Inspection of the lined surface for possible defects such as pin holes/ blisters etc.
  6. Hydro testing of the lined components
Seven Advantages of Steel Rubber Lining Pipes
Seven Advantages of

RUBBER LINED PIPING SYSTEM:

The limited temperature endurance of the Rubber Lining Material prohibits any welding on steel subsequent to lining. That means that the Rubber Lined Piping System needs to be necessarily prefabricated. At the same time the total profile is also required to be broken down into flanged spools of such configuration that the internal surface requiring lining is accessible from at least one of the open ends for application of lining. It is from the above concern that the line size of Rubber Lined Piping is recommended to be 2” NPS and above.

A Rubber lined Piping System therefore is an assembly of various flanged Spools/ Fittings prefabricated to a predetermined dimensions. The supporting system employed for Rubber Lined Piping is normally a clamp and shoe arrangement. Welding of any support component to steel surface of the lined piping is completely prohibited. The accessories to Rubber lined Piping include soft Rubber gasket and full threaded Fasteners.

Dimensions for Lined Piping
Dimensions for Lined Piping

Rubber Lined Pipe Dimension & Size & Specification

Whether a new build or a re-line, our craftsmen use the same rigorous process to provide you with the best quality rubber lined pipe in the industry. From fabrication of the pipe to your specifications to surface preparation and selection of the proper elastomer followed by custom painting, these industrial grade lined pipe withstand abrasive and corrosive slurries in suction or discharge service.

Specifications Nominal Diameter Outside Rubber Liner Thickness(mm) Weight(kg/M)
Pipes Length (m) Nominal O.D.(mm) Pipe Wall Thickness(mm)
DN40 1.00 48.30 3.68 6.00 8.87
DN50 1.00 60.30 3.91 6.00 10.50
DN65 1.00 73.00 5.16 6.00 15.94
DN80 1.00 88.90 5.49 6.00 20.73
DN100 1.00 114.30 6.00 6.00 28.99
DN150 3.00 159.00 7.00 6.00 102.97
DN200 4.00 245.00 6.00 6.00 185.95
DN250 6.00 273.00 9.27 6.00 427.22
DN300 6.00 323.80 9.53 6.00 535.63
DN350 6.00 355.60 9.53 8.00 615.15
DN400 6.00 406.40 9.53 10.00 730.38
DN450 6.00 457.00 9.53 10.00 821.43
DN500 6.00 530.00 9.53 10.00 966.59
DN600 6.00 610.00 9.53 10.00 1144.71
DN650 6.00 660.00 9.53 10.00 1265.98
DN700 6.00 711.00 9.53 10.00 1404.27
DN750 6.00 765.00 9.53 10.00 1480.43
DN800 6.00 820.00 9.53 10.00 1573.01
DN900 6.00 914.00 9.53 10.00 1754.42
DN950 6.00 965.00 9.53 10.00 1857.11
DN1000 6.00 1020.00 9.53 10.00 1956.29
DN1200 6.00 1220.00 9.53 10.00 2332.58
Failed Rubber Lining
Failed Rubber Lining

Rubber lined pipe is only as reliable as the installation, we’ve been rubber lining pipe for a long time. With the proper rubber pipe lining, a pipe can withstand years of abrasive and corrosive service conditions. Rubber compounds are engineered for chemical resistance to protect your pipe from the effects of acids and oxidizing agents. We carefully considers temperature, chemical composition and concentration of the materials being conveyed to determine the best compound for your rubber pipe. We know that selecting the proper lining for your pipe can be confusing, so our sales representatives and friendly engineers will answer any questions you have and help you choose the right material for your rubber lined pipe.

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One thought on “Rubber Lined Piping”

  1. Rubber lined pipe is used to transport Abrasive Slurry solutions, Corrosive Chemicals, and many other liquids from one place to another. Since most Rubber Lined Pipe applications are for transporting abrasive slurries, we test our materials for abrasion resistance to ensure we are providing you with the best product suited to your application.

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