Large Diameter Stainless Pipe

Our Large Diameter Stainless Pipe is manufactured using precision welding and advanced polishing processes, resulting in a bright, smooth surface. Made from premium stainless steel that meets ASTM A312 standards, it offers excellent corrosion resistance and high mechanical strength, making it suitable for industrial and construction applications.
Outer Diameter: 5mm-420mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Steel Grade: TP XM-19 TP XM-10 TP XM-11 TP XM-15 TPXM-29 304 304L 304H 304LN 309S 309H 310S 316 316L 316LN 317 321 347 348
Standard: ASTM A312, or as customer's request

Products Description

Our Advantages

1. Surface Quality

Our Large Diameter Stainless Pipe undergoes mirror polishing to ensure a surface free of scratches, weld marks, dents, or polishing imperfections.

2. Weld Quality
Our pipes utilize argon arc welding for precise weld control, eliminating porosity, cracks, and welding defects.Our Large Diameter Stainless Pipes undergo hydrostatic testing to ensure no leakage risk.

3. Corrosion Resistance
Our pipes undergo pickling and passivation treatment to enhance their corrosion resistance. They pass salt spray and pitting tests, making them suitable for harsh and corrosive environments.

4. Customization Services
We offer customization services for dimensions, surface finishes, etc., and passivation polishing eliminates weld defects. We provide customized welding solutions based on our clients' specific application needs.

5. Packaging and Shipping
We offer a range of packaging options, including plastic caps, plastic film, woven bags, wooden crates, and iron frames. We provide shipping options such as sea freight, air freight, and land freight. Samples are available.

application areas

Building and Structural Engineering: Decorative columns and pillars, handrails, railings, and supporting components for public facilities, etc.
Chemical and Petrochemical Processing: Corrosion-resistant fluid transportation, heat exchanger systems, acidic chemical pipelines, etc.
Water Treatment: Seawater desalination plants, wastewater treatment equipment, clean water distribution systems, etc.
Marine and Offshore Applications: Seawater pipelines, offshore platform pipelines, etc.
Machinery and Industrial Equipment: Industrial exhaust systems, pressure pipelines, etc.

Chemical Composition

Element	C (max)	Mn (max)	P (max)	S (max)	Si (max)	Cr (%)	Ni (%)	Mo (%)
304	0.08	2.00	0.045	0.030	1.00	18.0–20.0	8.0–11.0	–
309S	0.08	2.00	0.045	0.030	1.00	22.0–24.0	12.0–15.0	–
310S	0.08	2.00	0.045	0.030	1.50	24.0–26.0	19.0–22.0	–
316	0.08	2.00	0.045	0.030	1.00	16.0–18.0	10.0–14.0	2.0–3.0

Mechanical Properties

Property	Tensile Strength (MPa)	Yield Strength 0.2% (MPa)	Elongation (%)	Hardness (HB)
304	≥520	≥205	≥40	187
309S	≥515	≥205	≥40	192
310S	≥520	≥205	≥40	192
316	≥520	≥205	≥40	187

Possible Alternative Grades

Alternative Grades	Reasons
347H	Excellent creep resistance, suitable for high-temperature applications.
2205 Duplex	Higher strength and better corrosion resistance.
904L	Superior corrosion resistance suitable for harsh chemical/polluted environments.