ASME B16.28 90° Short Radius Elbow A234 GR.WPB-S with Black Paint – Durable Carbon Steel Fitting for Tight-Space Piping

When dealing with piping systems that require sharp directional changes within confined spaces, the ASME B16.28 90-degree short radius elbow offers a compact and efficient solution. Haihao Group recently delivered a batch of A234 GR.WPB-S 90° short radius elbows to a client, all coated with high-quality black paint to enhance surface protection and extend service life.

What Is a Short Radius 90° Elbow?

A 90° short radius (SR) elbow is a pipe fitting that changes the flow direction at a right angle (90 degrees) with a center-to-end radius equal to the pipe diameter (R = 1D). Compared to long radius elbows (1.5D), the short radius elbow takes up less space and is used where layout constraints or compact design is essential.

According to ASME B16.28, which governs wrought steel buttwelding short radius elbows and returns, these elbows are designed for use in high-pressure, high-temperature systems requiring reliable direction changes.

Material: ASTM A234 GR.WPB-S

The elbows are manufactured from ASTM A234 Grade WPB-S, a widely used carbon steel material suitable for moderate and high-temperature service. The “S” indicates fittings supplied in the normalized condition, enhancing the material’s toughness and structural integrity.

Key features of A234 GR.WPB-S:

1.Excellent weldability and strength

2.Suitable for oil, gas, water, and steam lines

3.Compliant with mechanical and chemical requirements defined by ASTM A234

Surface Treatment: Black Paint Coating

To enhance corrosion resistance and improve product appearance, the carbon steel elbows are coated with black paint. This coating:

Provides basic rust prevention during storage and transport

Is ideal for non-corrosive environments or systems with additional insulation or external protection

Meets common client requirements for temporary surface protection

Application of ASME B16.28 Short Radius Elbows

These A234 GR.WPB black painted short radius elbows are commonly used in:

1.Oil & gas refineries

2.Power generation systems

3.HVAC and water treatment pipelines

4.Industrial process piping with limited installation space

Their compact size makes them particularly useful in skid-mounted units or high-density piping layouts.

Why Choose Haihao Group?

With decades of experience in carbon steel pipe fittings production, Haihao Group manufactures and supplies elbows that strictly meet ASME B16.28 and ASTM A234 standards. We offer:

1.Precise dimensions with smooth bevel ends for welding

2.100% inspection and traceable documentation

3.Optional surface treatments: black paint, galvanized, or anti-corrosion coatings

4.Global delivery and technical support

Conclusion

For reliable, space-saving directional flow changes in piping systems, the ASME B16.28 90° short radius elbow A234 GR.WPB-S is a durable and cost-effective choice. Coated with black paint, these elbows are ready to meet industrial demands in a wide range of applications.

Haihao Group is your trusted supplier of carbon steel elbows, buttweld fittings, and complete piping solutions.

Contact us today for detailed specifications or a quotation for your project. Email:sales@haihaogroup.com