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China Wholesale Cast Iron Grooved Connection Pipe Fitting Coupling

  • medium:Oil Water Gas
  • material:Ductile Iron
  • Surface Treatment:Spray or DIP Paint and Other Corrosion Resistant 
  • Technology:Casting, Forging
  • Certification:FM UL ISO9001
  • Material of Rubber Ring:EPDM/NBR
  • s13-60.3

  • Tongte

  • Steel pipe connector

  • Groove connection

  • 1-24

  • Qingdao, China

  • 1.6MPa, 2.5MPa, 4MPa, 10MPa

  • 60000 tons/year

  • Regular is red/customizable

  • EPDM/Nitrile etc.


Product Name: China Wholesale Cast Iron Grooved Connection Pipe Fitting Coupling with FM/UL

Material:ductile iron/stainless steel/forged steel/stainless steel
Surface Treatment:Spray or dip paint and other corrosion resistant treatment
Packaging:Plastic bags for internal use and wooden cases for external use
Shipping:FedEx,EMS,DHL,AIR or Sea
Payment:T/T,L/C,Money gram,Western union
Application:Fire, water, mines, ships, Marine engineering and other pipeline systems


High pressure pipe coupling is suitable for fire fighting, mining, ships and other high pressure piping systems.

It is a single grooved pipe coupling that can withstand pressure of 10Mpa.

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

The sealing gasket adopts a special C-type design, perfectly matching with the pipe size, cushioning the impact pressure and achieving a better sealing effect.

Bolts/nuts are made of heat-treated high-strength carbon steel with mechanical properties of 8.8 grade.

The bolt adopts the American standard oval neck, the nut adopts the flange face to prevent loosening, easy to install and disassemble.

It has the advantages of compensating displacement and centering, sound insulation and vibration reduction, elasticity and adjustability, corrosion resistance and pressure resistance, easy installation and disassembly, etc.



  1. Through the single groove coupling design and development of double groove, triple groove coupling.

  2. The factory produces its own coupling, the color can be customized, and the production process can be detected.

  3. There are independent quality inspection personnel to monitor product quality in real time.

  4. Experienced technicians can customize products according to actual use.





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:What's your delivery time?

A:depending on the order quantity and your location,it will take about 15-30 days .

Q3:Do you provide samples?

A:If you need some samples for testing ,we can make them according to your requirements.Samples will be prepared and sent by express within a week, usually arriving within 4-7days .You need to pay for the sample and sipping fee.

Q4: What are your main products?
A: We specialize in producing a wide range of valves, elbows, flanges, Tee, Cross, gaskets etc.

Q5: What size can your company produce?

A: We have all the common sizes on the market. In addition, we can also customize according to your needs, whether its size or material.

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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