CNG Hebei DIKAI Piping Products Co., Ltd
CNG Hebei DIKAI Piping Products Co., Ltd
Grooved Couplings and Fittings
GROOVED COUPLINGS
Complete models, fast installation, light volume, reliable quality, safe use, economical and practical, universal application
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DUCTILE CAST IRON
DUCTILE CAST IRON
Years of experience to achive good quality
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GROOVED FITTINGS
GROOVED FITTINGS
The advanced equipment and exquisite casting technology ensure the dimension accuracy of the groove.
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OEM ACCEPTABLE
Support OEM customization, the quality is absolutely guaranteed
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DELIVERY RELIABLE
DELIVERY RELIABLE
Stereoscopic warehouse, large storage capacity fast shipment speed, timely delivery
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PRODUCTS
After more than a decade of experience in grooved-connected pipelines, CNG has developed grooved products with multi-gauge and multi-pressure ratings for use with different pipe materials.
Rigid Coupling

Rigid Coupling

90° Elbow

90° Elbow

Equal Tee

Equal Tee

End Cap

End Cap

Split Flange

Split Flange

Grooved Mechanical Tee

Grooved Mechanical Tee

Hebei Dikai Piping Products Co., Ltd.
FOUNDED IN 2002

CNG ( Hebei DIKAI Piping Products Co., Ltd ) was founded in 2002, is a professional pipeline products production enterprise, is one of the earliest development of grooved fittings enterprises in China. Till now, CNG grooved products of piping system are always in a leading position in the industry.

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QUALITY CONTROL & TESTING EQUIPMENTS
Laboratories Laboratories
Metalloscope Metalloscope
Lab 1 Lab 1
Lab 2 Lab 2
OUR COMPLETED PROJECTS
Collaboratived projects spread all over the world
National Stadium - Bird's Nest National Stadium - Bird's Nest
Beijing Daxing International Airport Beijing Daxing International Airport
Guangzhou Baiyun Airport Guangzhou Baiyun Airport
Qingdao Metro Qingdao Metro
Shandong Provincial Government Office Building Shandong Provincial Government Office Building
Wuhan Greenland Center Building Wuhan Greenland Center Building
Qingdao Wanda Film and Television Base Qingdao Wanda Film and Television Base
Hangzhou Trade Wisdom Gate Hangzhou Trade Wisdom Gate
Shandong Haiyang Nuclear Power Project Shandong Haiyang Nuclear Power Project
Yangmei Group Coal Mine Engineering Yangmei Group Coal Mine Engineering
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NEWS CENTER
Keep abreast of CNG developments
Case Study: Reducing Downtime with Grooved Pipe Installation in a Manufacturing Plant

Jul. 22, 2025

Case Study: Reducing Downtime with Grooved Pipe Installation in a Manufacturing Plant
In the fast-paced manufacturing industry, downtime is the enemy of productivity. Whether caused by system upgrades, maintenance, or unexpected failures, even a few hours of halted operations can translate to significant revenue loss.
How to Choose the Right Grooved Fittings for HVAC, Fire Protection, and Plumbing

Jul. 22, 2025

How to Choose the Right Grooved Fittings for HVAC, Fire Protection, and Plumbing
Grooved fittings have become the preferred choice for modern piping systems in HVAC, fire protection, and plumbing due to their ease of installation, reliability, and flexibility. However, selecting the right grooved fittings for your specific application requires a careful evaluation of various factors.
Sao Paulo International Exhibition

Jul. 17, 2024

Sao Paulo International Exhibition
Sao Paulo International Exhibition Center, with an area of about 100,000 square meters, is one of the largest and most important exhibition halls in Brazil, and one of the most important exhibition and conference hosting venues in Sao Paulo, Brazil.
Looking for Stable
Long-term Partnerships
We are seeking reliable and trustworthy partners to grow our business together and establish long-term relationships. Feel free to contact us to explore partnership opportunities.
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