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Steel Rubber Composite Pipe

TOMINE Steel-rubber Lined  composite  steel pipe has good corrosion resistance, wear resistance and impact resistance. It is widely used in fine tailings conveying system of mines in metallurgy, electric power, chemical, petroleum, coal, cement and other industries, coal-fired power plant ash conveying system, chemical anti-corrosion, coal mine backfilling and Rivers, port dredging, pipelines and other fields. It is especially suitable for working with a delivery temperature between -50 °C and +120 °C

Featuring at high Wear resistance, corrosion resistance, impact resistance, anti-fouling properties, TOMINE abrasive-resistant pipeline is  expecially widely used in transferring ore, concentrated mine, tails mine, coal-fired power plant ash, FGD gypsum slurry, phosphorus chemical slurry, a variety of corrosive liquids from chemical plant, port dredging and other related fields.

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Main Feature

Wide Range of applications :

The steel-rubber composite pipe can be used for a long time under the environment of -50 ° C ~ +120 ° C. The lining rubber will not be separated from the steel pipe due to temperature changes.

High Impact Resistance:

The rubber deforms under impact, absorbs the kinetic energy of the particles, and then returns most of the energy back to the particles in the  form of bounce, reducing the impact force and greatly improving the service life.

Good Wearing Resistance:

The rubber lining can be formulated according to the needs of wear resistance, and its wear resistance is more than five times that of steel  pipes and more than four times that of ceramics.

 Good Anti-Corrosion Performance:

The steel-rubber  composite pipe can resist corrosion of various acids, alkalis, salt and sewage, and can be used in complex and harsh  chemical corrosion   environments.

Small Running resistance and reduced energy consumption .

The rubber-lined steel tube produced by our company is produced by high-pressure air bag extrusion process. The inner wall is smooth, compact and impervious, saving operating costs and reducing costs.

Light weight, easy to install and maintain.

The steel frame of the rubber-lined steel pipe only acts as a bearing, and can be thinned to the minimum pressure level. Its weight is 20-30% lighter than ordinary steel pipe, and the rubber-lined steel pipe is not afraid of bumping, the lining will not be broken, and the rubber-lined steel pipe is used. The service life is 4-5 times higher than that of pure steel pipe. The average annual investment is low during the service life, and the weight is light, the bracket cost can be saved, the resistance consumption is small, the operation cost is saved, and the comprehensive cost of the rubber-lined steel pipe is greatly reduced, which can save the user. A lot of money.

Can Be Recycled.

The steel pipe only needs one-time investment. The used old steel pipe can be used after repairing the rubber. The rubber is equivalent to 4-5 times of the life of the metal pipe. Further saving money, energy saving and environmental protection.


Technical Specification

Steel Pipe Size






Work Pressure(Mpa)


Pipe Size


Recommanded rubber thickness (mm Working Pressure (Mpa
φ89×4 4mm 0-6.4 φ325×8 6mm 0-4
φ108×5 4mm 0-6.4 φ377×9 6mm 0-4
φ133×5 4mm 0-6.4 φ426×9 6mm 0-4
φ159×5 4mm 0-4 φ480×9 8mm 0-2.5
φ180×5 4mm 0-4 φ530×9 8mm 0-2.5
φ219×6 5mm 0-4 φ560×9 8mm 0-2.5
φ245×6 5mm 0-4 φ630×10 10mm 0-2.5
Φ273×6.5 6mm 0-4 φ680×10 10mm 0-2.5

Products Type

A.Wearing Resistance Rubber-Steel Composite Pipe

TOMINE wear-resistant steel-rubber composite pipe adopts the principle of “overcoming rigidity with softness” to reduce the impact and wear  from conveying medium on  pipe wall. The  wear- impact resistance of rubber-lined pipelines widely  used in mineral processing plant’s raw ore, concentrate, tailings slurry transportation pipelines. The rubber lining layer of the wear-resistant steel-rubber composite pipe is made of rubber that is produced Malaysia, formulated and processed with special technology,  adhering with excellent wear resistance. The elbow adopts a unique eccentric technology, without changing the diameter of the pipe, the increasing thickness of the outer arc rubber lining updates mostly the service life to more3 times than that of the ordinary rubber lining elbow.

Performace Index of

Description Standard Index
lining breaking strength(MPa) N >= GB/T 528-2009 18
Lining &skeleton 180°, peel strength:(KN/m) >= GB/T 15254-1994 18
Lining layer elongation at break:(%)N  >= GB/T 528-2009 550
Constant elongation stress of lining layer:(300%MPa ) N GB/T 528-2009 5
Akron wear reduction of lining layer:(cm3/1.61 km ) <= GB/T 1689-1998 0.02
Lining hardness (Shore Type A) GB/T 531.1-2008 60±5
Change rate of fracture strength of lining layer during hot air aging(70°Cx72h, %) <= GB/T 3512-2001 10

B.Corrosion resistant steel and rubber composite pipes

TOMINE corrosion resistant steel and rubber composite pipes are widely used in solid, powder, gas and liquid conveying environment in the field of acid, alkali, salt and oil conveying. TOMINE has mature rubber formula design capability based on years of research and development of rubber formulations and practical application experience, which can be selected according to the different conveying media and specific working conditions with the corresponding lining formula, such as natural rubber, butyl rubber, neoprene, butyl rubber, etc. The lining rubber can be used in one or more layers and can be hard rubber semi-hard rubber or soft rubber

Performance Index of Corrosion resistant steel and rubber composite pipes

Descriptio Soft Rubber Hard Rubber
lining breaking strength(MPa) N >= 20 17
Lining &skeleton 180°, peel strength:(KN/m) >= 9 10
Elongation at tear of the lining layer:(%)> 550 400
Lining layer elongation at break:(%)N  >= 8 10
Akron wear reduction of lining layer:(cm3/1.61 km ) <= 0.05 0.04
Change rate of fracture strength of lining layer during hot air aging(70°Cx72h, %) <= 10 10


3.Products Specification

3.1.straight pipes, bends, tees and reducers.

3.2.diameter range: DN50 – DN1800.

3.3. Spiral welded pipe as skeleton are available in  diameter range ①219-1820, and the thickness of the pipe can be chosen from 6mm-18mm according to the customer’s requirements, with a maximum working pressure of 4.0MPa.

3.4.seamless steel pipe as skeleton are available in the diameter range ①57-①720, the thickness of the pipe can be chosen from 3.5mm-60mm according to the customer’s requirements, and the maximum working pressure is 6.4MPao.

3.5 The thickness of the rubber lining is determined according to customer requirements and specific working conditions.


C.Desulfurization steel and rubber composite pipe


Desulfurization steel and rubber composite pipe is widely used in power plants: exhaust desulfurization device (desulfurization pipeline, acid water storage tank, anion tank, anion tower, absorption tower flue, accident slurry tank, limestone slurry tank, machine mill recirculation slurry tank): coking plant, gas plant: desulfurization tower body, desulfurization pipeline, chemical salt equipment, evaporation tower. Lining with natural hard rubber, butyl rubber, nitrile rubber, etc. Butyl rubber has excellent acid and alkali resistance, and the temperature resistance can reach 120℃. And has excellent airtightness, mainly used in ozone resistance, sunlight and aging occasions. Butyl rubber uses special bonding agent, the bonding strength reaches international 4N/mm².

Product specifications

1.Desulfurization steel rafter composite pipe diameter range: DN50-DN2000

2.The diameter range of desulfurization steel and rubber composite pipe with seamless steel pipe as skeleton is φ57- φ720, and the thickness of steel pipe is 3mm-60mm according to customer’s requirement, and the maximum working The maximum working pressure is 10.0MPa.

3.Hardness Inspection Specific

Rubber type Maximum Application
Temperature °C
Application Pressure MPa Physcal Performance Vulcanization method Application
Negative pressure Positve  pressure Hardness HS Tensile strength MPa Elongation % Bonding force with metal
Natural semi-hard rubber 60-80 -0.098 0.98 Shore D65
>20 >50 ≥80kg/cm² Pressurized vulcanization Acid-resistant (hydrochloric acid, dilute sulfuric acid) alkali-resistant, Salt water resistance, strong flexibility and resistance to impact
Natural hard rubber 80-100 -0.098 0.98 Shore D75
>22 >25 ≥80kg/cm² Pressurized vulcanization Resistant to acid, alkali and salt water
Natural soft rubber 70-90 -0.098 0.98 Shore A60
>20 >450 ≥6kg/cm² Pressurized vulcanization
or atmospheric vulcanization
Standard:Acid and alkali resistant, can be used in salt
acid storage tank, resistant to slurry abrasion, can be used for Field lining
Low calcium and magnesium hard rubber 80-100 -0.098 0.98 Shore D65
>22 >30 ≥80kg/cm² Pressurized vulcanization Standard product. Natural hard rubber sheet with Ca,,
Mg, very low content, for use with caustic soda
Plant lining
Normal pressure vulcanized hard rubber 80-100 -0.098 0.98 Shore D70
>20 >40 ≥60kg/cm² atmospheric vulcanization For acid and alkali resistant plant equipment and management of field linings
Neoprene sheet 80-110 -0.098 0.98 Shore A60
>10 >400 ≥6kg/cm² Pressurized vulcanization
or atmospheric vulcanization
Standard product. Good oil resistance, weather resistance performance, mainly used in phosphoric acid, seawater Power station and heat exchanger lining
Butyl rubber sheet 80-120 -0.098 0.98 Shore A60
>12 >450 ≥6kg/cm² Pressurized vulcanization
or atmospheric vulcanization
Standard products. High temperature resistant, sulfuric acid resistant, containing Fluoric acid, also field lining
Pre-vulcanized butyl rubber 80-120 -0.098 0.98 Shore A65
>6 >350 ≥4kg/cm² Pre-vulcanization Field lining, large equipment without vulcanization Equipment corrosion protection

Applicatio Standard:

  • ASTMD412StandardTest Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension
  • ASTMD5963Standard Test Method for Rubber Property-Abrasion
  • ASTMD471Standard Test Method for Rubber Property-Effect of Liquids
  • ASTMD573Standard Test Method for Rubber-Deterioration in an Air Oven
  • ASTMD429Standard Test Methods for Rubber Property-Adhesion to Rigid Substrates
  • ISO8501-1Preparationof steel substrates before application of paints and related products — Visual assessment of surface  cleanliness–Part
  • ASTMD2240Standard Test Method for Rubber Property;Durometer Hardn
Industry Application