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In-depth Analysis of Water Pressure Testing Standards for Ductile Iron Pipes and Fittings
Beneath the city’s surface, a network of ductile iron pipes forms a vital lifeline, tirelessly supplying water day and night. How can we ensure that every pipe leaving the factory is rock-solid and leak-proof? The answer lies in the extremely rigorous water pressure testing process. Today, ...Read more -
EN545 Brinell Hardness Requirements and Test Methods
At DINSEN, our pursuit of quality begins with our relentless pursuit of the highest standards in materials. Hardness, a key indicator of the durability and reliability of ductile iron pipes, is something we adhere to with an unwavering commitment far exceeding the standard. Our hardness test is a...Read more -
DINSEN DI Pipe: The Superior Tensile Strength Solution for Modern Pipeline Networks
In the wave of urban development, water conservancy projects, and industrial construction, the safety and durability of pipeline systems have always been a focus of industry attention. Ductile iron pipes, with their superior tensile strength and comprehensive performance, have become the preferre...Read more -
Tensile Testing of Ductile Iron Castings: Sampling and Test Bar Preparation per EN 545
According to EN545 standard, ductile iron castings must adhere to strict sampling and test bar preparation specifications during tensile testing to ensure accurate assessment of material properties. The following is an overview of key requirements: I. Sampling Requirements The thickness of the s...Read more -
What is the difference between hub and no hub cast iron pipe?
When planning building drainage, sewage, or ventilation systems, cast iron pipes are the preferred material due to their superior durability, sound insulation, and fire resistance. However, when you begin sourcing, you’ll soon encounter two key terms: cast iron pipe hub and hubless cast iro...Read more -
Key Specs of EN545 Ductile Iron Pipe: Length Measurement and Straightness
1. Measurement of ductile iron pipe length under EN545 standard Dimensional accuracy of ductile iron pipes and fittings is fundamental to ensuring tight pipe joints and convenient installation. The EN545 standard establishes scientific and rigorous specifications for the length measurement of duc...Read more -
What is the difference between ordinary rubber rings and anti-slip rubber rings?
In the sealing system of ductile iron pipes, the “soul” of the T-shaped socket joint lies in the tiny rubber ring. Though inconspicuous, it directly impacts the sealing reliability, operational safety, and service life of the entire piping system. The choice of “anti-slip rubber...Read more -
What is the Difference between Cast Iron Pipe and Ductile Iron Pipe?
In building water supply and drainage, and in municipal engineering, cast iron pipes are highly favored for their durability, corrosion resistance, and noise reduction. However, when faced with the two European standards, EN545 and EN877, many engineers, procurement personnel, and designers may b...Read more -
Type Test of Ductile Iron Pipe Flange Joints
To verify the strength and tightness of flange joints under service conditions, they must undergo type testing. The flanged pipe must exhibit no noticeable leakage under the combined effects of internal pressure and the corresponding bending moment. The test conditions are: The internal pressure ...Read more -
Common Joint Types for Ductile Iron Pipes
For any pipe connection, the joint type is the core, directly determining the system’s sealing, stability, and construction efficiency. For ductile iron pipes, the three most commonly used joint types are the T-shaped socket joint, the flange joint, and the self-anchor joint, each playing a...Read more -
Verification of Leak-Tightness in Ductile Iron Pipe Joints According to EN545
Ductile iron pipe has become one of the preferred materials for water pipeline systems due to its high strength, toughness, and excellent corrosion resistance. The reliability of a pipeline system depends not only on the pipe itself, but more critically on its connection points—the joints. The EN...Read more -
EN545 Flexible Joint Angle Requirements
In the design and manufacture of flexible joints, the allowable deflection angle should be no less than: DN40~DN300: 3.5° DN350~DN600: 2.5° DN700~DN2000: 1.5° All joints must be designed to allow for perfect axial movement and allow for extraction. The flexible joint technology for ductile iron ...Read more
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