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High Pressure Pipe Couplings for Coal Mining

Composition: two shells, one rubber ring, four bolts and nuts

Connection: Trench connection

Color: mainly red, other colors can be customized
  • S30-89

  • Tontr

  • S30-89

  • Steel pipe coupling

  • Groove connection

  • 2"~12"

  • Qingdao, China

  • 40MPa

  • 60000 tons/year

  • Regular is red/customizable

  • EPDM/Fluorine/Nitrile


High Pressure Pipe Couplings for Coal Mining

Material Ductile Iron/35CrMo
Connection method Groove connection
Packing Wooden box
Freight method use DHL, FedEx, EMS when the goods are small, and use sea  when the goods are large
Payment method T/T, money gram, L/C, Western union
Application range water supply, mine pipeline, etc.

Product introduction:

Two pieces of shell: the color is mostly red, others need to be customized, internal processing groove, groove connection is more convenient, fast and safe

A rubber ring: the material is mostly EPDM or fluorine rubber, to ensure that the internal seal does not leak

Four bolts and nuts: High strength galvanized bolts and nuts, corrosion resistance, high compressive strength

The channel type ultra-high pressure pipe joint is suitable for mining, Marine and other high pressure pipe system.

It is a two-grooved pipe coupling that can withstand 40Mpa of pressure.

The shell is made of ductile iron, according to ASTM A536 65-45-12

The rubber gasket has a special design with “C” profile that creates an effective seal in three steps:

1.When assembling stretched rubber gasket that is slightly smaller than a pipe diameter of the two pipe ends and create a first seal.

2.The coupling halves are then placed around the gasket which adapts to them. The coupling halves are bolted together to further improve the sealing.

3.When the piping system is pressurized, a ”pressure reserve” is created due to the profile of the gasket. The sealing lips are pressed at the increasing pressure harder down against the gasket seating surface which creates the third seal and makes the connection completely leak-proof and airtight.


Product advantages

1.Safety performance: groove connection mode, automatic precision casting or precision forging forming, high dimensional accuracy, excellent physical properties, safer use.

2.Weight reduction: The same 89 mm connector can reduce the weight by 50% compared to the flange connection.

3.Save time: The number of bolts and nuts in the grooved steel pipe connector is reduced compared with the flange, greatly reducing the installation steps.

4.Space saving: No flanges take up less space, and more pipes can be installed in the same space.

5.The price is good:Products are sold directly from manufacturers to customers, reducing middlemen to earn the difference.



Coupling installation and use method

1. Check the burrs at the end of the steel pipe

2. Lubricate the lip and back of the seal

3. Seal the trap like a tube end

4. Seal the trap into the other end of the steel pipe

5. Clamp into the pipe fitting

6.Stiffening bolt

The pictures are shown below:


Company introduction

Qingdao Tontr Pipeline System Co., Ltd. is a company integrating design, development, production and sales. The factory covers an area of 10,000 square meters and has more than 100 employees. With the support of new and old customers, our product range has expanded to more application environments. All products are produced in accordance with GD, ASTM and other standards and specifications.

The company's products will be introduced below. The company is mainly engaged in plumbing systems. Often used in coal mine face, oil, Marine ships and so on. Pipe system includes components: special process corrosion resistant steel pipe, steel pipe coupling, gate valve, pipe fittings (positive tee, elbow, diverter, accumulator, diverter, etc.).

1. All our workers own rich experience to ensure the export smoothly and make you feel sincere service before, during and after the purchase.

2. Our factory can customize according to your requirements and report the production progress to you at any time.

3. High output, you can get the earliest goods.

4. The factory sells directly, removes the middleman and earns the difference, allowing you to get the best price.

5.We have the specialized after-sales service to solve the quality problems in time.

TONTR is located in the beautiful coastal city of Qingdao. It is a professional national-level high-tech industry engaged in the design, development, manufacture and sales of high-pressure pipeline systems.

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