Home » Products » Grooved Coupling » Rigid Couping » Single grooved pipe fittings steel pipe couplings


Share to:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

Single grooved pipe fittings steel pipe couplings

  • S11-114.3

  • Tontr

  • S11-114.3

  • Steel pipe coupling

  • Groove connection

  • 1"~24"

  • Qingdao, China

  • 1.6MPa, 2.5MPa, 4MPa, 10MPa

  • 60000 tons/year

  • Regular is red/customizable

  • EPDM


Single grooved pipe fittings steel pipe couplings


2 – 12 inch




FM approved / UL certified


Red painted / galvanized / epoxy blue / grey

Gasket :


GROOVED Rigid Coupling

Grooved mechanical couplings conform to ASTM F1476.

Ductile iron pipe couplings and fittings material con-form to ASTM A536 Grade 65-45-12.

Coatings of Orange/Red Paint or Hot Dipped Galvanized Conforming to ASTM A153.

Gasket Grade EPDM (Colors can be customized) -30°F (-34°C) to +230°F(+110°C)


For environments where aggressive, corrosive atmosphereis expected (e.g. direct outdoor exposure, direct contact withwater, industrial atmosphere etc.)

Coupling bolts and nuts madeof stainless steel (type A4 respective 316) are available.

Thesestainless steel bolts and nuts are MoS2 coated grey-black tonhibit galling.

ln addition, special surface coatings (e.g. Rilsan, Resicoat etc.)are available.

NoteEPDM gaskets must never be brought into contact with lubricants or oils containing mineral oils, as well as other materialscontaining mineral oils (e.g. fuels or cleaning agents).

AssemblyUse suitable lubricants for the EPDM sealing only.


Choose the advantages of our company

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.


Company profile

The company is located in Jiaozhou City, Qingdao, Shandong Province, China. The company mainly develops and produces remote liquid supply projects. The transfer of the emulsion or water to the desired place through a certain pressure. It is often used in fire fighting, coal mining, shipbuilding and other industries.

The company has about 100 personnel, with independent technology research and development department, quality inspection department, production department customer service department and other departments. Three steel pipe research and development and production equipment, dozens of various types of molds, more than 50 test equipment.

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.

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.

Quick Links

Product Category

Contact Us
Copyright @ 2023 Qingdao Tontr Pipeline System Co., Ltd. All rights reserved.  Sitemap  | Support By Leadong