Tianjin Dingrunda Group - Latest Industry Insights and Solutions

What is S5, S4, S3.2, and S2.5 mean in PP-R pipes?
2026/03/13
When purchasing PP-R pipes, we often see markings such as S5, S4, S3.2, and S2.5 on the pipe wall. What do these markings mean? Here's a brief explanation. <BR> I. What is the "S" in pipe series? "S" is a designation for pipe ser...
Why Is PVC Pipe Suitable for Underground Pipeline Engineering Projects?
2026/03/11
Underground pipeline engineering projects demand materials that can withstand diverse environmental conditions while maintaining structural integrity over extended periods. Among the various piping materials available in the market, PVC pipe has emer...
How Can PVC Pipe Improve Flow Efficiency in Infrastructure Pipelines?
2026/03/04
Infrastructure pipeline systems form the backbone of modern utilities, delivering water, gas, and other essential services to communities worldwide. The selection of appropriate piping materials directly impacts system performance, maintenance costs,...
Policy Interpretation: China Cancels Export Tax Rebate for PVC Raw Materials
2026/03/03
Effective April 1, 2026, China will cancel the 13% VAT export rebate on PVC pure powder, unplasticized PVC, and plasticized PVC. Why This Policy?This move is part of China's broader effort to promote high-quality industrial development and curb "invo...
Why Do Contractors Rely on PVC Pipe for Easy Installation Projects?
2026/02/26
Construction professionals and contractors have increasingly turned to PVC pipe solutions for their installation projects due to the material's exceptional versatility, durability, and ease of handling. This synthetic polymer piping system has revolu...
How Can Proper HDPE Pipe Fittings Reduce Leakage Risks in Engineering Use?
2026/02/24
Modern engineering projects demand reliable piping solutions that can withstand extreme conditions while maintaining structural integrity over decades of operation. High-density polyethylene systems have revolutionized industrial applications by offe...