TJTC Earns IAPMO UPC Listing for Flexible Transition Couplings

Tianjin Tiancheng Pipeline Technology Co., Ltd. (TJTC) has achieved a significant milestone in its quality control and product certification process. The company has earned the IAPMO UPC listing for its flexible transition couplings designed for underground piping systems. This certification, valid from October 2, 2026, to October 2031, is a testament to TJTC’s commitment to meeting North American plumbing codes and technical specifications.

The IAPMO R&T UPC Certificate of Listing is a globally recognized credential, accredited by ANAB. This certification is particularly important as it ensures that TJTC’s products can be used with confidence in new construction, pipeline renovation, and underground sewer repair projects across the United States and Canada. The certification is widely accepted by authorities having jurisdiction, making it a core qualification for plumbing, sewer, and underground drainage pipe fittings entering the North American construction market.

TJTC’s flexible transition couplings are designed to connect various types of buried pipes, including cast iron, PVC, HDPE, copper, and other dissimilar piping materials. These couplings provide leak-tight sealing, accommodate minor misalignments, ground settlement, and angular deflections, making them ideal for underground sewer, drain, and waste piping systems. The product’s design ensures reliable performance and durability, meeting the stringent requirements of North American plumbing codes.

This newly awarded IAPMO UPC certification adds another authoritative credential to TJTC’s existing certification portfolio, which already includes UL and FM approvals for fire sprinkler pipe hangers and couplings. The certification marks a major milestone in the company’s quality control system, verifying that its underground piping coupling products fully meet the North American plumbing codes and technical specifications.

With this certification, TJTC can better support municipal contractors, plumbing distributors, and engineering firms throughout North America. The UPC-listed flexible transition couplings can be specified for various projects, helping customers pass local inspections smoothly. TJTC’s strict quality management processes, from raw material incoming inspection to finished product testing, ensure that every product meets the highest standards.

At TJTC, the company continuously upgrades its product lines to satisfy global market requirements. The certification is not only a recognition of the product’s performance but also a solid proof of the company’s commitment to delivering dependable piping solutions and long-term value for partners worldwide.

In summary, TJTC’s achievement in earning the IAPMO UPC listing for its flexible transition couplings is a significant step forward in the company’s quality assurance and product certification journey. This certification will enable TJTC to meet the demands of the North American construction market and support its customers in their projects with confidence.