Recent Shipment of Reducing Socket Weld Flanges to Indonesia

At Haihao Group, we recently completed the production and delivery of a batch of reducing socket weld flanges for an Indonesian client specializing in offshore oil and gas projects. This order demonstrates our capacity to meet complex technical specifications and tight delivery schedules.

Product Overview

The shipment included the following items:

• Size: 3″ x 3/4″

• Pressure Ratings: 150#, 300#, and 600#

• Schedule: 80S x XXS

• Material: ASTM A182 F316/F316L stainless steel

• Standard: ASME B16.5

These reducing socket weld RF flanges were engineered for reliable performance under high pressure and corrosive environments, typical of subsea and chemical processing applications.

Why Choose A182 F316/316L Stainless Steel?

Customers often ask why this material is selected over standard carbon steel. The main reasons include:

• Excellent Corrosion Resistance: Ideal for chloride-rich or acidic environments.

• High Temperature Stability: Performs consistently in elevated temperature conditions.

• Low Carbon Composition (316L): Reduces risk of intergranular corrosion after welding.

By combining a reducing bore and socket weld connection, these flanges simplify piping installation where line size transitions are required.

Strict Quality Control

Before shipment, every flange was subjected to a thorough inspection process:

✅ Visual Check: No rust, dents, or machining defects
✅ Dimensional Verification: Ensured precise bore sizes and face dimensions
✅ Material Test Certificates (MTC): Provided per EN 10204 3.1
✅ Surface Finish: Smooth raised face per ASME B16.5
✅ Marking and Traceability: Heat numbers and specifications laser-marked

Packaging and Delivery

We understand the importance of safe transport and corrosion prevention. All flanges were:

• Protected with anti-corrosion oil on sealing faces

• Sealed in moisture-proof plastic film

• Packed in fumigation-free plywood crates

Thanks to our production planning and inventory of forgings, the full order was completed and shipped within the agreed timeline.

Applications

These reducing socket weld flanges are commonly installed in:

• High-pressure manifolds

• Offshore piping skids

• Chemical process equipment

• Flowline connections requiring a compact design

If You Need Reliable Reducing Socket Weld Flanges

At Haihao Group, we manufacture a complete range of ASME B16.5 socket weld flanges in stainless steel and alloy materials, with customized dimensions and pressure ratings.

Whether you require a standard item or a tailor-made solution, our engineering and quality teams are here to support your project.