Contact Platform Support
Help Center304 Stainless Steel Pipe Seamless ASTM A312 Sch 40 1/2inch to 12inch OD
Product Spotlights
Related Products
-
Stainless Steel Pipe Standard Compliant ASTM A312 A213 316L Welded Full TraceabilityNegotiableMOQ: 1 Ton -
Stainless Steel Pipe for Food Grade Sanitary Lines 304 2B FinishNegotiableMOQ: 1 Ton
-
Stainless Steel Pipe With Mill Test Report 304 316L Seamless Welded 1 Year WarrantyNegotiableMOQ: 1 Ton
-
430 Stainless Steel Pipe Seamless Annealed 1/4inch to 4inch Schedule 80NegotiableMOQ: 1 Ton
-
201 Stainless Steel Pipe Decorative Tube 20mm-100mm OD for HandrailsNegotiableMOQ: 1 Ton
As a trusted manufacturer based in Liaocheng, Shandong, China, Hemaokang Steel (Shandong) Co., Ltd. specializes in producing high-quality 304 Stainless Steel Seamless Pipes that comply with ASTM A312 Sch 40 standards. Our pipes are available in outer diameters ranging from 1/2 inch to 12 inch, offering excellent corrosion resistance, high tensile strength, and reliable performance for various industrial applications. With an annual export value exceeding US$50 million and a dedicated team of 51–100 experienced employees, we ensure consistent quality and timely delivery to global markets.
Our seamless manufacturing process eliminates weld seams, providing uniform wall thickness and superior pressure-bearing capacity. The pipes are rigorously tested to meet industry requirements, making them ideal for oil and gas, chemical processing, water treatment, construction, and food processing industries. Below we highlight the key features, specifications, and benefits of our 304 stainless steel seamless pipes.
Key Features & Technical Specifications
- Material Grade: 304 Stainless Steel (UNS S30400) – excellent corrosion resistance in most environments.
- Standard: ASTM A312 – covers seamless, welded, and heavily cold-worked austenitic stainless steel pipe.
- Schedule: Sch 40 – standard wall thickness for moderate pressure applications.
- Outer Diameter: From 1/2 inch (21.3 mm) to 12 inch (323.9 mm) – available in fractional and nominal sizes.
- Length: Customizable – typically 6 meters (20 feet) or random lengths upon request.
- Surface Finish: Mill finish, 180 grit polish, 320 grit polish, or pickled and passivated (optional).
- Ends: Plain ends, beveled ends, or threaded ends (optional).
- Certifications: ISO9001 certified quality management system.
| Parameter | Specification |
|---|---|
| Standard | ASTM A312 / ASME SA312 |
| Material | 304 Stainless Steel (C ≤ 0.08%, Mn ≤ 2.00%, Si ≤ 1.00%, Cr 18.0-20.0%, Ni 8.0-10.5%) |
| Schedule / Wall Thickness | Sch 40 (e.g., 1/2" OD: 1.65 mm, 1" OD: 2.77 mm, 4" OD: 4.19 mm, 12" OD: 6.35 mm) |
| Pressure Rating | Varies by size; typical working pressure up to 600 psi for smaller diameters |
| Tensile Strength | ≥ 515 MPa (75,000 psi) |
| Yield Strength | ≥ 205 MPa (30,000 psi) |
| Elongation | ≥ 35% |
| Hardness | Brinell ≤ 187, Rockwell B ≤ 90 |
Advantages & Customer Benefits
- Seamless construction eliminates weak points, ensuring uniform strength and leak-proof performance under high pressure.
- 304 grade stainless steel offers excellent resistance to oxidation, acids, and chlorides, making it suitable for harsh environments.
- Wide size range (1/2" to 12" OD) allows flexibility for various piping systems, reducing the need for adapters.
- Sch 40 wall thickness balances strength and cost, ideal for moderate pressure applications in plumbing, HVAC, and industrial lines.
- Customizable lengths and finishes enable you to minimize waste and installation time.
- ISO9001 certified production ensures consistent quality, traceability, and compliance with international standards.
- Competitive pricing without compromising quality – backed by our large-scale manufacturing and export capabilities.
Company Strength & Trust
Hemaokang Steel (Shandong) Co., Ltd. was established in 2025 but has quickly grown into a major exporter with an annual export value of US$50 million – US$100 million. Our team of 51–100 skilled professionals is dedicated to quality control, efficient logistics, and customer service. We serve markets across North America, South America, Europe, Asia, Africa, and Oceania, and we hold ISO9001 certification to ensure every pipe meets rigorous standards. Our pipes are also available with third-party inspection reports upon request.
We maintain a large inventory of 304 stainless steel seamless pipes in various sizes, so your orders can be processed quickly. Whether you need a single shipment or a long-term contract, we offer flexible payment terms and professional after-sales support. Contact us today to request a quote or discuss your specific requirements – we are ready to deliver reliable piping solutions that exceed your expectations.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between seamless and welded pipe for 304 stainless steel?
A: Seamless pipe is manufactured from a solid billet and has no weld seam, offering higher pressure resistance and uniformity. Welded pipe is formed from a coil and welded longitudinally, which is generally more economical but may have a weaker weld zone. For critical applications, seamless is preferred. -
Q: Can you supply pipes with a polished or pickled surface finish?
A: Yes, we offer mill finish, 180–320 grit polish, and pickled surface finishes. Please specify your requirement when ordering, and we will confirm availability. -
Q: What is the typical tolerance for outer diameter and wall thickness?
A: Our pipes are manufactured to ASTM A312 tolerances. For OD: ±0.5% to ±1% depending on size; for wall thickness: ±12.5% of nominal. Detailed tolerance tables are available upon request. -
Q: Do you provide third-party inspection or certification?
A: Yes, we can arrange third-party inspection (e.g., SGS, BV, TÜV) at the buyer’s cost. Mill test certificates are included with each shipment, and our ISO9001 certification ensures consistent quality. -
Q: What is the minimum order quantity (MOQ)?
A: For standard sizes, MOQ is typically 1 ton or 100 meters. For non-standard sizes or special finishes, please contact our sales team to discuss. -
Q: How long does delivery take?
A: For in-stock sizes, delivery is usually 7–15 days after payment. For customized orders, lead time is 15–30 days depending on quantity and specifications. -
Q: Can you supply pipes with threaded or beveled ends?
A: Yes, we can provide plain ends, beveled ends (for welding), or threaded ends (NPT/BSPT) as per your request. Please specify in your inquiry. -
Q: Is this pipe suitable for food processing or potable water?
A: Yes, 304 stainless steel is widely used in food processing, dairy, and potable water systems due to its corrosion resistance and non-toxic properties. However, we recommend verifying local regulations for specific applications.
Send Inquiry to This Supplier
You May Also Like
-
Stainless Steel Pipe for Chemical Processing 316L Seamless Corrosion ResistantNegotiableMOQ: 1 Ton
-
316 Stainless Steel Pipe Sanitary Tube 1.5inch 2inch 3inch Tri-Clamp EndsNegotiableMOQ: 1 Ton
-
2205 Duplex Stainless Steel Coil 2.0mm Thick S31803 Standard for Oil & GasNegotiableMOQ: 1 Ton
-
201 Stainless Steel Coil 1.2mm Thick JIS G4305 Standard for Construction UseNegotiableMOQ: 1 Ton
-
316L Stainless Steel Coil 1.0mm Thick ASTM A240 Standard Mill Test Report AvailableNegotiableMOQ: 1 Ton
-
430 Stainless Steel Coil 0.8mm Thickness 2B Surface BA Finish for Kitchen EquipmentNegotiableMOQ: 1 Ton
-
Stainless Steel Coil 201 0.5mm-3mm Thickness Free Sample and On-Time Delivery GuaranteeNegotiableMOQ: 1 Ton
-
904L Stainless Steel Coil 0.6mm-2.0mm Thickness With MTC for Chemical IndustryNegotiableMOQ: 1 Ton
-
Stainless Steel Coil 304 1.5mm Thick for Automotive Exhaust Systems ManufacturingNegotiableMOQ: 1 Ton
-
316L Stainless Steel Coil 0.8mm Thick for Pharmaceutical Equipment FabricationNegotiableMOQ: 1 Ton
