Stainless Steel 316L Flanges Pipe

316L flange stainless steel pipe is based on ultra-low carbon austenitic stainless steel (UNS S31603, C≤0.03%), with standard flanges (such as flat welding, butt welding, and socket welding flanges) integrated at both ends. It has excellent corrosion resistance and convenient and reliable flange connection characteristics, and is suitable for pipeline system integration in high-pressure, corrosive and high-cleanliness scenarios.
The room temperature yield strength of 316L flange pipe is ≥170MPa, the tensile strength is ≥485MPa, and the elongation is ≥40%. It has both high strength and toughness, and can withstand dynamic loads such as pipeline vibration, thermal expansion and contraction.

Standards	- Pipe: ASTM A312/SA312 (Seamless), ASTM A358 (Welded) - Flange: ANSI B16.5, GB/T 9113, EN 1092
Chemical Composition	C ≤ 0.03%, Cr 16–18%, Ni 10–14%, Mo 2–3%, Mn ≤ 2.0%, Si ≤ 1.0%
Dimensions	- Outer Diameter: DN15 (1/2") ~ DN600 (24") - Wall Thickness: Sch5S ~ Sch160 (1.65mm ~ 30mm) - Flange Thickness: Customized by pressure class (Class150 ~ Class2500)
Temperature Range	-196°C to 870°C (Short-term peak: 980°C)
Seal Testing	- Hydraulic Test: 1.5x working pressure, no leakage after 30-minute hold - Pneumatic Test: 1.1x working pressure, bubble-free detection with soapy water

Notes:

• Pressure Class Compatibility: Flange dimensions and thickness comply with international standards (ANSI, GB, EN) for pressure ratings from 150 psi (Class150) to 2500 psi (Class2500).
• Material Traceability: Provided with Material Test Certificate (MTC) per EN 10204 3.1/3.2, including chemical composition and mechanical property reports.

GNEE provides ultra-low carbon and high molybdenum design to cope with harsh media such as chlorides, acids and alkalis, and its service life is 3 times longer than that of ordinary stainless steel pipes. Standardized flanges are quickly assembled, with reliable sealing and maintenance costs reduced by more than 50%. From chemical high pressure to food cleanliness, full pressure levels and multi-standard flange adaptation are available, providing customized surface treatment.

Q: Can you send samples?
A: Of course, we can provide customers with free samples and express delivery services to all over the world.

Q: What product information do I need to provide?
A: Please provide the grade, width, thickness, surface treatment requirements you have and the quantity you need to purchase.

Q. Do you provide customized product services?
A: Yes, if you have your own design, we can produce according to your specifications and drawings.

Q: What certifications do your products have?
A: We have ISO 9001, MTC, third-party inspection such as SGS, BV, etc.