A Comprehensive Guide to Flange Installation

In industrial pipeline systems, the reliability of flange connections directly impacts the safety and energy efficiency of equipment operation. This article, combined with the industry experience of YULONG STEEL flensfabrikant, will present a scientific and standardized installation process, helping you avoid risks in practical operations and ensure the maximum performance of flanges.

Pre-installation Preparation of Flange Installation

Adequate pre-installation preparation is crucial for ensuring the quality of flange connections. First, it is necessary to clarify the flange types. Select appropriate pressure ratings, sealing surface forms (such as Raised Face-RF, Ring Joint Face-RTJ) and materials (carbon steel, stainless steel, etc.) according to the working conditions. For example, the DIN 2527 BLIND FLANGE commonly used in European projects is often used to seal the end of pipelines due to its excellent sealing performance.

Precise Installation of Flange

The installation of flanges should follow the principle of “symmetrical positioning and step-by-step tightening”. First, place the flange smoothly onto the pipeline and use a level to calibrate the parallelism, ensuring that the deviation between the two flange surfaces is controlled within 0.5mm. Subsequently, use the diagonal pre-tightening method to tighten the bolts in several steps to avoid unilateral stress causing deformation.  

System Testing of Flange

After installation, strict testing must be carried out to ensure the connection performance. Visual inspection should confirm that the bolt protrusion length is uniform (it is recommended to be 1-2 threads), and there is no visible deformation of the flange. For the sealing test, the soap-water application method or a helium mass spectrometer leak detector can be used, with a focus on checking the gasket and weld areas.

Maintenance of Flange

Regular maintenance is an important part of ensuring the long-term reliable operation of flanges. It is recommended to re-check the bolt tightness with a torque wrench every quarter, and anti-loosening glue can be applied to pipelines with frequent vibrations. In corrosive environments, YULONG STEEL steel flange manufacturer’s epoxy-coated flanges can effectively resist chemical corrosion and extend the service life. If leakage is detected, minor cases can be resolved by re-tightening in a standardized manner; in severe cases, the gasket or flange needs to be replaced, and products of the same brand and batch are preferred to ensure compatibility. For bulk purchase requirements, YULONG STEEL provides flange wholesale services, supporting rapid delivery and customized packaging to reduce procurement costs.

YULONG STEEL Flange Factory: Full-chain Services to Upgrade Engineering Projects

As a flensfabrikant deeply engaged in the pipeline fittings field, YULONG STEEL not only provides full-specification products covering different flange types (such as ANSI B16.5, ASME standards) but also relies on a digital production platform to achieve full-process control from material melting to finished product inspection. Each batch of products undergoes spectral analysis, ultrasonic flaw detection, and hydrostatic testing to ensure compliance with ISO 9001 international standards. YULONG STEEL, as a leading flensfabrikant, provides you with quality flange products to help your projects achieve more efficient and reliable pipe connections.