Shipping EN 10253-4 pipe caps for German customers
Haihao Group has recently completed the delivery of a batch of EN 10253-4 stainless steel butt-weld pipe caps to a German customer for use in a high-pressure vessel and piping system. These pipe caps are designed to meet the requirements of the European pressure equipment directive, ensuring full compliance and reliability.
About the Product: EN 10253-4 Pipe Caps
Our precision-engineered pipe caps are fabricated in strict compliance with EN 10253-4 specifications, delivering superior mechanical performance and chemical resistance for demanding European industrial applications. This authoritative standard establishes comprehensive technical requirements for seamless/welded butt-weld fittings (including 45°/90° elbows, concentric/eccentric reducers, equal/reducing tees, and end caps) manufactured from austenitic and duplex stainless steel grades. Designed for versatility across operating conditions, these components maintain pressure integrity and corrosion protection in ambient, cryogenic, and high-temperature environments.
EN 10253-4 Stainless steel pipe cap products produced by Haihao Group
Key Specifications:
Standard: EN 10253-4
Type: Butt-welded Pipe Caps
Material: Austenitic Stainless Steel (AISI 304 / 316L); Duplex on request
Dimensions: DN 50 – DN 600 (custom sizes available)
Surface Treatment: Anti-corrosion oil, pickling & passivation, or customized anti-corrosion paint by the customer
Wall Thickness: Default per EN 10253-4 tables, or customized to SCH/PN requirements
Certification:
- Default: EN 10204 3.1 material certificates
- EN 10204 3.2 (TUV/SGS/BV) available for PED compliance
Project Background: Why EN 10253-4?
Our German customer, a key player in the pressure equipment and petrochemical sector, required pipe caps that comply strictly with the EN 10253-4 standard. This standard is essential for applications where high reliability, corrosion resistance, and durability are critical — particularly in pressure piping and boiler systems.
Unlike ASME B16.9 or EN 10253-2 fittings, the EN 10253-4 standard specifies requirements suitable for pressure equipment operating under the European Pressure Equipment Directive (PED 2014/68/EU), which ensures safety and conformity across EU markets.
Key Features of EN 10253-4 Compared to Other Standards
Here is a comparison table outlining the key differences between EN 10253-4, EN 10253-2, and ASME B16.9 standards for butt-welding pipe fittings:
| Feature | EN 10253-4 | EN 10253-2 | ASME B16.9 |
|---|---|---|---|
| Origin | European Norm (EN) | European Norm (EN) | American Society of Mechanical Engineers (ASME) |
| Scope of Fittings | Seamless and welded butt-welding fittings (elbows, reducers, tees, caps) | Seamless and welded butt-welding fittings (elbows, reducers, tees, caps) | Factory-made wrought butt-welding fittings (elbows, reducers, tees, caps, etc.) |
| Material Types Covered | Austenitic and Austenitic-Ferritic (Duplex) Stainless Steels | Non-alloy and Ferritic Alloy Steels | Carbon and Low-Alloy Steels (ASTM A234/A234M, A420/A420M), Austenitic and Duplex Stainless Steels (ASTM A403/A403M, A815/A815M), Nickel Alloys (ASTM B366/B366M), Aluminum Alloys (ASTM B361) |
| Intended Applications | Pressure purposes at room, low, or elevated temperatures, fluid/gas transmission. | Pressure purposes, various temperature ranges depending on steel type. | Various industrial applications, typically for pressure piping. |
| Types of Fittings (Pressure Factor) | Type A: Reduced pressure factor <br> Type B: Full service pressure | Type A: Reduced pressure factor <br> Type B: Full service pressure (increased wall thickness in body) | Not directly categorized by pressure factor in this manner; wall thickness is defined by schedule numbers. |
| Dimensional System | Metric (millimeters, mm) | Metric (millimeters, mm) | Imperial (inches) with DN equivalents |
| Pressure Rating System | Nominal Pressure (PN), related to pressure in bars. | Nominal Pressure (PN), related to pressure in bars. | Class ratings (e.g., Class 150, 300, 600) based on PSI. |
| Elbow Radii Terminology | Primarily uses D-numbers (e.g., 2D, 3D, 5D) | Primarily uses D-numbers (e.g., 2D, 3D, 5D) | Long Radius (LR) and Short Radius (SR), which are similar to 3D and 2D respectively. |
| Wall Thickness | Defined by specific requirements for Type A/B, and generally thinner for a given OD compared to ASME schedules. | Defined by specific requirements for Type A/B. Type B has increased wall thickness at the body. | Defined by pipe schedules (e.g., Sch 10, Sch 40, Sch 80, XS, XXS). Generally thicker. |
| Inspection Requirements | Specifies requirements for inspection and testing (two test-categories). | Specifies requirements for inspection and testing. Fittings are supplied after specific inspection. | Covers test methods and marking. Material specifications (e.g., ASTM A234) define material testing. |
Material Grades in EN 10253-4
| Steel Grade | EN Materil No. | Typical Application | Max. Temperature |
|---|---|---|---|
| 1.4301 (AISI 304) | 1.4301 | General corrosion resistance | ~600°C |
| 1.4404 (AISI 316L) | 1.4404 | Chemical processing, marine use | ~600°C |
| 1.4462 (Duplex 2205) | 1.4462 | High-strength, chloride-resistant | ~250°C |
*Actual limits vary by pressure and wall thickness per EN 13480-3.
EN 10253-4 Pipe Cap Dimensions
| DN | OD (mm) | Cap Height (mm) |
|---|---|---|
| 15 | 21.3 | 25.0 |
| 20 | 26.9 | 25.0 |
| 25 | 33.7 | 38.0 |
| 32 | 508.0 | 38.0 |
| 40 | 48.3 | 38.0 |
| 50 | 60.3 | 38.0 |
| 65 | 76.1 | 38.0 |
| 80 | 88.9 | 51.0 |
| 100 | 114.3 | 64.0 |
| 125 | 139.7 | 76.0 |
| 150 | 168.3 | 89.0 |
| 200 | 219.1 | 102.0 |
| 250 | 273.0 | 127.0 |
| 300 | 323.9 | 152.0 |
| 350 | 355.6 | 165.0 |
| 400 | 406.4 | 178.0 |
| 450 | 457.0 | 203.0 |
| 500 | 508.0 | 229.0 |
| 600 | 610.0 | 267.0 |
| 700 | 711.0 | 267.0 |
| 800 | 813.0 | 267.0 |
| 900 | 914.0 | 267.0 |
| 1000 | 1016.0 | 305.0 |
Application in German Project
Our German client required reliable pipe ends to seal the pipelines in a high-pressure industrial setting, where safety, tightness, and compliance with EU regulations are critical. Haihao Group provided complete documentation, including surface inspection reports, dimension reports, material test certificates, PMI testing, and ultrasonic testing,ensuring compliance with customer and standard requirements.
Why Do German Customers Choose Haihao’s EN 10253-4 Pipe Caps?
Full EU Standard Compliance: Our pipe caps are produced strictly according to EN 10253-4, ensuring seamless integration into PED-compliant systems.
Traceable Quality Assurance: Each product comes with complete material certificates, mechanical property reports, and heat treatment records.
Superior Corrosion and Pressure Resistance: Suitable for applications involving steam, oil, gas, and corrosive chemicals.
Customizable Dimensions and Surface Treatment: Options include black painting, anti-rust oiling, sandblasting, and more.
EN 10253-4 Stainless steel pipe cap packed and ready for shipment
Packing and Shipping Details:
To guarantee safe transportation to Germany, all pipe caps were:
- Sandblasted and anti-rust coated,
- Individually capped for protection,
- Packed in fumigation-free wooden cases according to export standards.
Timely delivery and flawless packaging ensured the products arrived ready for immediate use in the customer’s pressure piping projects.
FAQ – EN 10253-4 Pipe Caps:
Q1: What is the difference between EN 10253-4 and EN 10253-2 pipe fittings?
A1: EN 10253-4 fittings are intended for use in pressure equipment and require stricter material, testing, and certification processes under PED, while EN 10253-2 covers non-pressure piping systems.
Q2: Can Haihao provide third-party inspection reports (e.g., TUV, SGS, BV)?
A2: Yes, third-party inspection services are available upon request for EU and global customers.
Q3: Are customized sizes or coatings possible?
A3: Absolutely. We can produce pipe caps in special sizes, wall thicknesses, and surface treatments based on customer needs.
Contact Us for EN 10253-4 Pipe Caps Solutions:
Haihao Group has decades of experience in producing pipe fittings for European and global markets. For more information or a free quotation on EN 10253-4 pipe caps, please contact our technical sales team. Email: sales@haihaogroup.com