304 304L 309S 310S 316L 316ti 321 347H 317L 904L 2205 2507 Stainless Steel Pipe/Tube CE Certificate AISI ASTM

This full-series stainless steel pipe set covers conventional low-carbon austenitic, high-temperature heat-resistant, titanium-stabilized anti-sensitization, super anti-corrosion and high-strength duplex steel grades, forming the most complete industrial piping matrix on the market. Different from previous single decorative, wear-resistant or single anti-corrosion pipe products, this lineup is fully oriented to large-scale industrial EPC projects, factory standardized supporting and harsh working condition system piping. All products pass strict CE certification and comply with ASTM/AISI global industrial norms, suitable for global engineering bidding, equipment supporting and cross-border industrial projects. It realizes one-stop centralized procurement of conventional, high-temperature, strong corrosion and high-strength piping materials, solving the industry point of multiple suppliers and inconsistent material standards for complex industrial projects.

We classify all grades by working condition attributes (cost-effective universal, high-temperature heat-resistant, enhanced anti-corrosion, super corrosion-resistant, high-strength duplex), completely different from conventional material classification, facilitating engineering selection:

Universal Low-Carbon Austenitic Series (304 / 304L / 316L)

As the basic universal industrial grades, low-carbon formula effectively avoids welding intergranular corrosion. 304/304L is suitable for conventional atmospheric, water and weak corrosive industrial circulating systems, with excellent weldability and stable mechanical properties. 316L adds molybdenum element, greatly improving chloride resistance, suitable for water treatment, general chemical and coastal conventional piping. These three grades are the most widely used standardized pipes for industrial basic piping, with stable batch consistency and high cost performance.

High-Temperature Heat-Resistant Series (309S / 310S)

Dedicated high-temperature industrial piping grades with ultra-high chromium and nickel alloy ratio. Different from ordinary stainless steel, they maintain stable metallographic structure and oxidation resistance under 900–1200℃ long-term high-temperature environment, no softening, no peeling, no thermal deformation. 309S is used for medium-temperature furnace auxiliary piping and thermal insulation equipment; 310S is super high-temperature resistant, specially applied to furnace core piping, high-temperature flue pipes and heat treatment equipment supporting systems, being the core material of thermal industrial engineering.

Stabilized Anti-Corrosion Series (316Ti / 321 / 347H / 317L)

Professional optimized grades for welding and high-temperature alternating working conditions. 321 and 316Ti adopt titanium stabilization technology, 347H uses niobium stabilization, all fundamentally eliminating welding sensitization failure, ensuring long-term anti-corrosion stability of weld joints after repeated welding and high-temperature impact. 317L upgrades molybdenum alloy content on the basis of 316L, with stronger resistance to pitting corrosion and industrial composite media. This series is mainly used for secondary frequent maintenance piping and thermal cycle system pipelines that require long-term uninterrupted operation.

Super Corrosion-Resistant Grade (904L)

Ultra-low carbon high-alloy super austenitic stainless steel, containing copper and high molybdenum components. It can resist dilute sulfuric acid, mixed acid liquid, high-concentration brine and severe pitting corrosion that ordinary 300-series steel cannot bear. It has no magnetic property, extremely low corrosion rate in extreme chemical environments, and is the preferred substitute for expensive nickel-based alloy pipes in fine chemical, pharmaceutical and desalination projects.

High-Strength Duplex Steel Series (2205 / 2507)

Dual-phase stainless steel integrating austenite and ferrite characteristics. The yield strength is twice that of ordinary austenitic stainless steel, with excellent stress corrosion resistance and high-pressure bearing capacity. 2205 is used for conventional high-pressure and medium-corrosion industrial piping; 2507 super duplex steel adapts to ultra-high pressure and severe marine corrosion working conditions, widely used in offshore platforms, ocean engineering and high-pressure chemical reaction systems.

All grades adopt industry-standard hot rolling + cold rolling composite process, matched with grade-specific professional heat treatment process. Unlike small-batch customized pipes, our full-series products implement unified industrial standard production, with extremely consistent grain structure, wall thickness uniformity and mechanical performance in batches. Each pipe undergoes eddy current flaw detection and hydraulic pressure test to eliminate internal micro-defects, ensuring zero leakage and stable pressure resistance for industrial long-term operation.

The whole series supports unified dimensional tolerance standards, with highly matched pipe fittings, flanges and valves on the market. It avoids assembly gaps and mismatched standards caused by mixed use of different brand materials, greatly improving the overall construction efficiency and system stability of industrial projects.

All products pass formal CE safety certification and fully comply with EU industrial equipment safety standards. The material chemical composition, mechanical properties, pressure resistance and corrosion resistance indicators all meet ASTM and EN international specifications. Complete official certification reports and factory test documents can be provided, supporting global engineering project bidding, factory equipment safety inspection, cross-border export customs clearance and third-party authority acceptance. It is fully adapted to standardized access requirements of high-standard industrial projects in Europe, America, Southeast Asia and other regions.

Different grade pipelines have targeted processing characteristics, and our full series covers all industrial processing adaptation needs: conventional austenitic steel supports arbitrary cutting, bending and welding with excellent forming performance; high-temperature resistant grades have stable thermal processing performance, not easy to crack during high-temperature assembly; duplex steel adapts to high-pressure equipment precise assembly; super corrosion-resistant steel meets pharmaceutical and chemical purification processing standards.

We support unified one-stop auxiliary services such as fixed-length cutting, port flattening, customized bending and standardized welding, unifying the processing standard of the whole project piping, avoiding performance differences caused by different processing technologies of different materials, and greatly reducing project construction difficulty.

304/304L/316L: Factory circulating water piping, general equipment fluid delivery, environmental protection conventional pipelines, building industrial supporting piping systems.

309S/310S: Industrial furnace piping, high-temperature flue gas pipeline, heat treatment equipment, boiler high-temperature auxiliary systems.

316Ti/321/347H/317L: Thermal cycle piping, frequently welded equipment pipelines, chemical medium circulating systems, power plant auxiliary piping.

904L: Fine chemical acid-base medium delivery, pharmaceutical purification pipelines, seawater desalination equipment, severe corrosion industrial systems.

2205/2507 Duplex Steel: Offshore marine engineering, high-pressure chemical reaction piping, salt-rich industrial area piping, high-load pressure-resistant equipment systems.

In view of large-scale industrial project procurement demand, we implement batch sampling inspection and full-size dimensional inspection for all products. Each batch is equipped with complete MTC material test reports, CE certification files and flaw detection reports, realizing full quality traceability.

Adopt engineering-grade standardized packaging: pipe ends are equipped with dust-proof and anti-collision plastic caps, pipe bodies are wrapped with thick moisture-proof and wear-resistant film, classified and bundled by grade and specification, and fixed with heavy-duty wooden frames. It is suitable for long-distance sea and land transportation and on-site long-term stacking, effectively preventing pipe deformation, surface damage and internal pollution, ensuring 100% intact rate of engineering materials.