ASME SA815 WPS32750 Equal Tee SMLS DN150 SCH10S B16.9

Introduction

The ASME SA815 WPS32750 Equal Tee is a seamless pipe fitting manufactured from super duplex stainless steel (UNS S32750), designed for use in high-strength and highly corrosive environments. With a balanced austenitic-ferritic microstructure, S32750 provides twice the strength of conventional stainless steels and superior resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking.

This tee is produced according to ASME B16.9, seamless type (SMLS), with dimensions DN150 SCH10S, making it suitable for offshore, marine, petrochemical, and power generation projects.

Key Features

• Material: Super Duplex Stainless Steel WPS32750 (UNS S32750)

• Standard: ASME SA815 / ASME B16.9

• Type: Equal Tee, Seamless (SMLS)

• Size: DN150 (6″ Nominal Bore)

• Schedule: SCH10S (thin wall, high flow applications)

• Strength: Yield ≥550 MPa, Tensile ≥800 MPa

• Corrosion Resistance: Excellent in seawater, brine, and aggressive chemical media

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Specifications

Advantages of Super Duplex S32750

• High Strength – nearly double that of standard austenitic grades such as 316L.

• Outstanding Corrosion Resistance – PREN > 40 ensures resistance to localized corrosion.

• Chloride SCC Resistance – ideal for seawater and subsea applications.

• Cost Efficiency – can replace higher-cost nickel alloys in many projects.

• Durability – long service life in harsh industrial conditions.

Applications

• Offshore & Marine Systems – risers, subsea manifolds, seawater injection lines.

• Oil & Gas Industry – process piping, separators, chemical injection systems.

• Chemical Processing Plants – piping systems for acids and chloride-rich solutions.

• Power Generation – boiler, condenser, and heat exchanger piping.

• Desalination Plants – seawater intake and brine discharge systems.

Quality Assurance

DLSS ensures each S32750 fitting meets strict standards:

• Seamless Manufacturing (SMLS) for maximum integrity.

• PMI Testing to confirm correct chemistry.

• NDT (UT, ET, RT) to ensure defect-free structure.

• Hydrostatic Testing available on request.

• Third-Party Inspection (SGS, BV, TUV, LR) supplied if required.

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FAQ

Q1: Why choose S32750 instead of S32205 duplex?
A1: S32750 has higher chromium, molybdenum, and nitrogen content, providing better resistance to seawater and aggressive chloride service.

Q2: What is the benefit of seamless (SMLS) fittings?
A2: Seamless fittings have no welds, offering superior strength and reliability for high-pressure applications.

Q3: What is ASME B16.9?
A3: It is the standard covering factory-made wrought buttweld fittings, including tees, elbows, reducers, and caps.

Why Choose DLSS?

• 30+ years of experience manufacturing stainless steel and duplex fittings.

• Global supply to offshore, oil & gas, petrochemical, and desalination projects.

• Strict quality control with full documentation and traceability.

• Seaworthy packaging with PE caps, plastic wrap, and ISPM-15 wooden cases.