Project Overview
In September 2025, DHX successfully supplied a batch of high-standard butt-welded pipe fittings for a major energy infrastructure project in Hungary. The project involved complex industrial fluid transportation systems operating under demanding conditions, requiring pipe fittings with high pressure-bearing capacity and durability.
Customer Requirements
As a leading European energy contractor, the client imposes exceptionally stringent technical standards for Oil & Gas Industry Pipeline Solutions. The challenges of this order include:
Zero Negative Deviation in Wall Thickness: The client explicitly required fittings to comply with EN10253-2 Type B standards, with absolutely no negative deviation (under-thickness) allowed in overall wall thickness to withstand potential High Pressure & High Temperature (HPHT) impacts.
Corrosion Resistance & High Compliance: Products must possess exceptional mechanical properties to prevent corrosion risks during long-term operation.
Delivery Cycle and Protection: The pipe bevels must remain undamaged during international transit, and a complete set of inspection reports compliant with Strict International Standards must be provided.
Solution
In response to customer requirements, the DHX technical team provided a customized enhanced Butt Weld Pipe Fittings:
Material Selection: Utilizing premium carbon steel grades like P265GH, strictly adhering to EN ISO 15614 welding procedure qualification.
Structural Reinforcement Design: Unlike standard Type A components, our Type B fittings employ pressure-based design. Their minimum wall thickness fully matches or exceeds the nominal wall thickness of connected pipes, eliminating pressure weak points in the system.
Multi-Layer Protection Strategy: For long-distance maritime transport, each elbow and tee is fitted with dedicated plastic caps to shield the beveled edges. Custom reinforced export crates ensure zero damage upon arrival at the Hungarian site.
Here is the technical specification table in English, optimized for international engineering standards and SEO:
The following is Technical Parameters:
| Parameter | Technical Specifications |
| Standard | EN 10253-2 (European Standard for Butt-welding Pipe Fittings) |
| Type | Type B (Full Pressure Rating / Reinforced Wall Thickness) |
| Product Range | Butt-weld Elbows (90°, 45°, 180°), Equal/Reducing Tees, Reducers, and Pipe Caps |
| Material Grade | P235GH, P265GH, 16Mo3 (Carbon & Alloy Steel) |
| Wall Thickness Tolerance | Strictly controlled at 0% to +20% (Zero negative tolerance guaranteed) |
| Angular Precision | Angular deviation for elbows (e.g., 90°) ≤ ±1.5° |
| Non-Destructive Testing (NDT) | 100% Radiographic Testing (RT) + 100% Magnetic Particle Testing (MT) |
| Manufacturing Process | Hot pushing / Pressing / Forging (Compliant with EN ISO 15614) |
Customer Feedback
“During our search for Oil & Gas Industry Pipeline Solutions, the DHX team’s professionalism was truly impressive. Their meticulous attention to detail—particularly in achieving precise wall thickness control per EN10253-2 Type B standards and implementing export-grade protective packaging—completely alleviated our concerns regarding long-distance transportation and high-pressure operating conditions. They are a partner worthy of long-term collaboration.”
Conclusion
As experts deeply rooted in pipeline systems, DHX steadfastly upholds the principle that “Quality Drives Safety.” Whether confronting compliance challenges under Strict International Standards or navigating the complexities of Sour Service environments, we deliver comprehensive, reliable pipe fitting manufacturing solutions.