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Manufacturers Sell Single Grooved Couplings Made in China

medium:Oil Water Gas
material:Ductile Iron
Surface Treatment:Spray or DIP Paint and Other Corrosion Resistant 
Technology:Casting, Forging
Certification: ISO9001
Material of Rubber Ring:EPDM/NBR
  • S10-76.1

  • Tontr

  • Steel pipe coupling

  • Groove connection

  • 1-24

  • Qingdao, China

  • 1.6MPa, 2.5MPa, 4MPa, 10MPa

  • 60000 tons/year

  • Regular is red/customizable

  • EPDM/Nitrile etc.


Product Name: Made in China Ductile Iron Grooved Pipe Coupling S1

Product information:

Grooved coupling includes housing, gasket and fasteners to create a groove leak-tight structure. 

Rigid grooved coupling provides rigidity through grip teeth in the housing. 

It does not allow for movement, similar to a rigid flanged or welded joint.

The pipe groove is made by forming or machining an actual groove into the ends of two pipes.  A gasket wraps around and on top of the pipe ends.

The housings wrap around the gasket and sit in the pipe grooves.

The bolts and nuts are tightened with a wrench to hold it all together.

微信图片_20230418154559 副本


Grooved coupling consists of three components:

The two-piece coupling housing which encloses the gasket and holds it in place at the pressure and vacuum.

The coupling halves are designed to fit tightly in the groove around the entire circumference of the pipe which provides a mechanical interlock which prevents axial movement of the pipes.

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

Bolts with oval neck which fits into the coupling.Matching oval holes and flange nuts which provide a secure locking screw connection.


Company profile


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 annual production of the company is about 15,000 tons. Products are widely used in petrochemical, shipbuilding, coal pipeline, municipal construction and other industries. Our company has obtained the national industrial production license, and can provide design solutions and customized pipeline systems according to different requirements of customers and the use of environment. Our company always put product quality in the first place, product quality zero defect is our company goal.

The reason for choosing us

1. Professional technicians. Our technicians are engaged in the pipeline industry for more than 20 years. Have a lot of experience.

2. Rigorous quality inspection. From raw material production, to semi-finished product processing, the final product delivery. Quality inspection personnel participate in the whole inspection.

3.Complete after-sales service system. The product is issued with instructions for use. Customer service staff will provide training for on-site personnel. And provide on-site installation guidance.

4.Excellent product price. The product is issued directly from the manufacturer, there is no middleman to earn the difference, and the price is cheaper.





Q1:Are you a manufacturer?

A:Yes,we are a manufacturer,and our products have been certified by ISO and our other international management systems.

Q2:Can you design and manufacture specifically for customers?

A:Of course.Our design and development personnel can design and produce products according to your needs.

Q3: How can I become your distributor or agent?

A: You can send your company profile and reference list to our sales manager.

Q4: How long is your delivery time?

A:Usually it's 15-30 days all the best or it's more than 30 days according to the quantity.

Q5: About packing?
A: Depending on the properties of the product, choose its appropriate packaging to protect the item from damage and allow you to purchase at ease.



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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