seamless pipe ss 304
2. Standard: ASTM A312, ASTM A213, compliant with standard global pipeline and machinery layouts
3. Process: Advanced hot extrusion seamless technology, completely eliminating any directional seam flaws
4. Size Range: Comprehensive selection of metric and imperial schedules from Schedule 5S up to extra-heavy XXS
5. Heat Treatment: Regulated furnace solution heat treatment at 1040°C followed by forced rapid water quenching
6. Surface Finish: Smooth solution annealed and pickled (SA&P) surface, free from any iron oxide scales
7. Application: General industrial fluid transmission, urban water networks, architectural frames, and plumbing
8. Service Advantage: Low MOQ for trial orders, mill test certificates (MTC EN 10204 3.1) provided with shipment
9. Packaging: Secure international bundle packing wrapped in heavy waterproof canvas with robust lifting slings
10. Key Advantage: Outstanding universal rust resistance, superb cold-forming ability, and maximum cost efficiency
Seamless Pipe SS 304 – Premium Austenitic Stainless Steel Tubing for Industrial Fluid Systems
Hebei All Trust Steel Co., Ltd delivers industrial-grade seamless pipe ss 304 manufactured through advanced hot extrusion technology, ensuring uniform wall integrity without weld seams. Our pipes are manufactured according to the demanding ASTM A312 and ASTM A213 requirements with a manufacturing capacity of over 15,000 tons annually and a 100% hydraulic test rate. Each product is solution heat treated at 1040 °C and rapidly quenched in water to a minimum tensile strength of 515 MPa. Our solution contains 18% chromium and 8% nickel, offering consistent oxidation resistance up to 870°C for chemical processing, food-grade transport and municipal water networks.
What Makes Our Seamless Pipe SS 304 the Industry Standard
Our austenitic stainless steel tube products are made using rotary piercing and multi-pass cold drawing methods. This removes the structural weaknesses of the welded alternatives.
It also has a better ability to withstand pressure because to the continuous grain structure. Uniform wall thickness and dimensional consistency along the length.
The annealed condition has high ductility and non-magnetic qualities for flexible installation. The smooth inside bore avoids build up of contaminants and is FDA hygienic.
These pipes are capable of withstanding reliable high pressure cycling with a yield strength of 205 MPa. No Heat Affected Zones (HAZ) means reliable performance under stress.
Technical Specifications & Available Configurations
| Parameter | Specification |
|---|---|
| Standards | ASTM A312, ASME SA312, ASTM A213, EN 10216-5, ASTM A249 |
| Material Grade | SS 304 (UNS S30400, 1.4301) |
| Manufacturing Process | Hot Finished, Cold Drawn, Cold Rolled, Solution Treated |
| Outer Diameter Range | 1/4" – 24" (13.7 mm – 609.6 mm) |
| Wall Thickness | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS (0.5 mm – 50 mm) |
| Standard Lengths | 5.8 m, 6 m, 11.8 m, 12 m, Single/Double Random Length |
| Surface Finishes | Solution Annealed & Pickled (SA&P), Bright Annealed (BA), Polished (180#–400#) |
| End Types | Plain End (PE), Beveled End (BE), Threaded Ends (NPT, BSPT) |
| Testing Methods | Hydrostatic, Eddy Current, Ultrasonic (UT), Radiographic (RT) |
| Quality Certificates | EN 10204 3.1/3.2 MTC, ISO 9001:2015, CE, PED |
| Inspection Support | SGS, BV, TUV, DNV, ABS third-party inspection available |
Core Advantages That Protect Your Investment
Superior Structural Integrity
Produced from premium grade billets via advanced piercing operations, our product offers a unified steel structure. The entire batch undergoes comprehensive automated eddy current scanning and high-pressure hydrostatic leakage verification.
Exceptional Corrosion Resistance
The chromium-nickel combination of 18-8 produces a passive oxide layer. This protects your pipe systems against nitric acids, organic compounds and mild chloride conditions without the danger of stress corrosion cracking at weld joints.
Customisable Options Versatility
We provide large dimensional flexibility from SCH 10S to SCH 80S. Custom mechanical polished surface treatments for your engineering drawings.
Custom processing Precision cutting, accuracy of ±0.05 mm; Laser hole drilling; Pipe bending; Threading and end bevelling. Low MOQ for trial orders and customised projects.
Strict Quality Validation
All piping is Positive Material Identified (PMI) for alloy composition verification. Mechanical property tests such as flattening test and flaring test are performed to guarantee no cracks during deformation.
Dimensional inspection evaluates variances in wall thickness and ovality to ASTM A312 tolerances. This guaranties compatibility with precision fittings and no delay in installation.
Where Seamless Pipe SS 304 Delivers Maximum Value
Chemical and Petrochemical Processing
Seamless pipe ss 304 handles your reactors with corrosive fluids on a regular basis. No weld seams = no localised corrosion or stress cracking in high pressure chemical transport lines. Suitable for nitric acid plants and for organic solvent distribution systems.
Food, Beverage and Pharmaceutical Industries
Smooth interior bore allows for simple sterilisation by CIP/SIP operations. No crevices imply no bacterial development, fulfilling demanding hygienic requirements for dairy processing, brewing and injectable medicine manufacture.
Municipal Water and Plumbing Networks
Long-term reliability in urban water distribution systems requires leak-proof performance. Our pipes provide the necessary structural integrity for commercial buildings and residential complexes.
Oil and Gas Instrumentation
Offshore platforms and hydraulic systems demand materials that withstand salt-spray environments. The seamless construction handles extreme external conditions and high internal pressures without seam failure risks.
Why Partner with Hebei All Trust Steel
With 15+ years of stainless steel industry experience, we maintain strategic partnerships with over 15 qualified mills. Our 5,000+ tons rolling inventory ensures stock orders ship within 3–5 days.
You receive complete material traceability with every order. Our professional engineering team provides material selection recommendations, corrosion resistance analysis, and CAD drawing verification.
Priority production scheduling can shorten manufacturing time by up to 35% for urgent projects. We provide various payment arrangements such as T/T, L/C at Sight and Open Account to approved partners.
Export packing is done with plastic end caps, protective sleeves and fumigation free hardwood cases. Shipping worldwide with FOB, CFR, CIF, DDP terms from Shanghai, Ningbo, Tianjin, Qingdao and Shenzhen ports.
FAQ
Q：What defines the foundational pressure containment capability of this standard product product line?
A：This universal pipe is manufactured via solid billet hot-piercing and multi-pass cold drawing, providing a unified steel structure free of weld joints for trusted, high-load industrial fluid handling.
Q：In what specific everyday industrial distribution environments is this seamless grade ideally deployed?
A：It is optimized for standard chemical processing lines, factory utility media transport, municipal commercial plumbing networks, and liquid food or beverage transportation loops where medium corrosion risks exist.
Q：What non-destructive testing (NDT) matrix is enforced to validate the structural safety of these seamless lines?
A：Every single piece passes through 100% automated eddy current testing or high-pressure hydrostatic leakage pressure verification to ensure absolute zero-defect structural wall integrity.
Q：What dimensional customization scales can be requested to match specific plant engineering blueprints?
A：We support extensive manufacturing layouts covering standard nominal pipe size (NPS) parameters from 1/4" to 24", customized wall thickness combinations, and flexible custom cuts up to 12 meters.
Q：What tracking and certification records accompany my shipment of this seamless ss 304 product?
A：All shipments include a fully transparent Mill Test Certificate (MTC) conforming strictly to EN 10204 3.1 criteria, capturing precise ladle chemical heat analysis and physical tensile load values.
Q：Can the product be used in seawater applications?
A：While resistant to many environments, 304 may experience pitting in high-chloride seawater conditions. For direct marine contact, SS 316 grades are typically recommended for enhanced chloride resistance.
Q：What is the maximum operating temperature for your product?
A：It maintains structural integrity up to 870°C for intermittent service and 925°C for continuous service, though oxidation becomes a consideration at these upper temperature limits.
Q：How do I verify the pipe is genuinely seamless?
A：Beyond visual inspection of the internal wall, Ultrasonic Testing (UT) confirms a uniform wall structure without a Heat Affected Zone (HAZ), distinguishing it from welded alternatives.
Contact Us
Ready to specify your project requirements with seamless pipe ss 304? Contact our technical team at info@hballtrust.com for customized solutions, competitive pricing, and fast delivery scheduling.
