Haihao Group Delivers NACE-Compliant Stainless Steel Pipe Fittings to Singapore
Haihao Group has successfully completed the delivery of a comprehensive range of seamless stainless steel pipe fittings to a customer in Singapore, supporting a piping system designed for high pressure and corrosive service conditions.
All fittings were manufactured from ASTM A403 WP316/316L, strictly in accordance with ASME B16.9, and fully compliant with NACE MR0175 / ISO 15156, ensuring reliable performance in sour service and offshore environments.
ASTM A403 WP316 316L seamless stainless steel pipe fittings manufactured to ASME B16.9 with NACE MR0175 compliance
Scope of Stainless Steel Pipe Fittings Supplied
This shipment covered a wide variety of butt welded stainless steel fittings, including elbows, reducers, and tees, produced with heavy wall thicknesses up to SCH 120S.
Elbows
- 45° long radius seamless elbows:
1.1/2″ SCH 80S, 4″–8″ SCH 120S - 90° long radius seamless elbows:
3/4″ SCH 80S, 2″ SCH 40S, 4″–8″ SCH 120S - 90° short radius seamless elbows:
8″ SCH 120S
Reducers
- Concentric reducers:
10″ × 8″ SCH 120S, 8″ × 4″ SCH 120S - Eccentric reducers:
4″ × 3″ SCH 120S × SCH 80S
6″ × 3″ SCH 120S × SCH 80S
8″ × 4″ SCH 120S
8″ × 6″ SCH 120S
Tees
- Equal and reducing tees:
10″ × 8″ SCH 120
8″ × 6″ SCH 120
8″ × 4″ SCH 120
4″ × 1.1/2″ SCH 120S × SCH 80S
4″ SCH 120, 8″ SCH 120
Material Advantages: ASTM A403 WP316/316L
ASTM A403 WP316/316L stainless steel fittings are widely specified for demanding piping systems due to their:
- Excellent resistance to pitting and crevice corrosion
- Strong performance in chloride-containing environments
- Low carbon content (316L), reducing intergranular corrosion after welding
Compliance with NACE MR0175 / ISO 15156 confirms controlled sulfur and phosphorus content, making these fittings suitable for H₂S-containing and sour service applications.
Manufacturing Standard: ASME B16.9
All fittings were produced in strict accordance with ASME B16.9, ensuring:
- Accurate dimensional tolerances
- Smooth internal flow paths
- High structural integrity under pressure and thermal cycling
The use of seamless construction further enhances reliability in high-stress piping systems.
Reliable Stainless Steel Pipe Fittings Supplier
With extensive experience supplying ASTM A403 WP316/316L pipe fittings to Singapore, Haihao Group supports projects in oil & gas, petrochemical, offshore, and chemical processing industries.
From heavy-wall elbows to complex reducers and tees, Haihao Group delivers NACE-compliant stainless steel fittings with full material traceability and consistent quality.