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CNGRUV
Engineered for reliability, safety, and fast installation in fire protection, HVAC, industrial, and construction systems. OEM customization available. Global delivery from China since 2002.
ASTM A536 Grade 65-45-12 ductile iron construction ensures 20% higher tensile strength for high-stress environments.
Grooved system allows 50% faster installation compared to welding. No hot work permits required.
Compatible with carbon steel, stainless steel, HDPE, and ductile iron pipes. Ideal for fire protection, HVAC, and industrial systems.
Support for OEM orders with custom sizes, colors, and pressure ratings. Quality absolutely guaranteed.
Stereoscopic warehouse with large storage capacity ensures fast shipment and reliable global delivery.
CNG (Hebei DIKAI Piping Products Co., Ltd) was founded in 2002 and is one of the earliest enterprises in China to develop grooved fittings. With over two decades of experience, we have established ourselves as a leading manufacturer in the pipeline products industry.
Our advanced casting technology and strict quality control ensure dimensional accuracy and reliability across all grooved products. We serve a wide range of industries including construction, fire protection, petrochemicals, and water treatment.
Founded in Hebei, China
Global presence
Certified products
Fast production & delivery
After more than a decade of experience in grooved-connected pipelines, CNG has developed products with multi-gauge and multi-pressure ratings for use with different pipe materials.
Collaborated projects spread all over the world
National Stadium - Bird's Nest
Beijing Daxing International Airport
Guangzhou Baiyun Airport
Qingdao Metro
Shandong Provincial Government Office
Wuhan Greenland Center
Qingdao Wanda Film Base
Hangzhou Trade Wisdom Gate
Shandong Haiyang Nuclear Power
Yangmei Group Coal Mine
We maintain strict quality assurance through advanced laboratories and precision equipment. Every product undergoes rigorous testing to meet international standards.
Material structure analysis
Dimensional & pressure testing
Certified for fire protection
High-pressure performance
Stay updated with CNGRUV developments
Couplings are essential in mechanical power transmission. Selecting the right type ensures reliability and longevity of machinery.
Read More →Material choice plays a critical role in performance. Steel offers strength; aluminum provides lightweight efficiency.
Read More →We participated in one of Brazil's largest exhibition centers, showcasing our latest grooved coupling innovations.
Read More →We seek reliable partners to grow our business together. Contact us to explore partnership opportunities.
Contact Us →For product inquiries, OEM customization, bulk orders, or partnership opportunities, visit our official website to get in touch.
Phone: +86 136 0317 2196
Email: gm@cngcast.com
Address: Economic Development Zone, Mengcun County, Cangzhou City, Hebei Province, China
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