| Product name | Stainless Steel Fluid Pipe, High Pressure Pipe, Structural Pipe ect. | Outer diameter | 0.5mm (capillary) ~ 2000mm (large diameter) |
| Material | 201/202: Low nickel economic type, used for decoration/furniture 304(L): General purpose, food/medical/construction (L stands for low carbon, stronger corrosion resistance) 316(L): Contains molybdenum, acid and alkali corrosion resistance,chemical/marine environment 321: Contains titanium, high temperature oxidation resistance, heat exchanger 430: Ferriticstainless steel, home appliances/automotive exhaust Duplex steel: 2205 (high strength and corrosion resistance,petrochemical/seawater treatment) | Application Areas | Building: handrails/curtain wall structure Food and medical: pipelines/surgical instruments Chemical energy: reactor pipelines/oil and gas drilling Automobile and shipbuilding: exhaust pipes/marine accessories Machinery manufacturing: hydraulic systems/precision parts |
| Standard | Chinese standards: GB/T 12771 (welded pipes), GB/T 14976 (seamless pipes for fluid transportation), GB/T 13296 (tubes for boilers/heat exchangers) International mainstream standards: ▪ ASTM/ASME (American standard): A213/A269 (precision pipes), A312 (welded/seamless pipes), A554 (decorative welded pipes) ▪ EN (European standard): EN 10216-5 (seamless pipes), EN 10217-7 (welded pipes) ▪ JIS (Japanese standard): JIS G3459 (stainless steel pipes for pipelines), JIS G3448 (tubes for mechanical structures) ▪ DIN (German standard): DIN 17456/17458 | Special Process | Internal polishing/internal coating: Food/pharmaceutical industry requires tube inner wall Ra≤0.8μm Pickling passivation: remove iron ions and improve corrosion resistance EP tube (electrolytic polishing): ultra-high cleanliness, semiconductor industry |
| Polishing Grade | Industrial grade: ▪ NO.1: hot rolled pickling, rough surface ▪ 2B: cold rolled + pickling + passivation (most commonly used,slightly matte) High precision grade: ▪ BA (bright annealing): mirror effect, medical/food equipment ▪ Polished: #180-#800 mesh(the larger the number, the smoother) ▪ Hairline: brushed surface for decoration | Grade | American standard steel grades: 304/304L, 316/316L, 321, 347H, 2205 (duplex steel) European standard steel grades: 1.4301 (304),1.4401 (316), 1.4541 (321) Special steel grades: 317L (high molybdenum), 904L (super austenite, strong acid resistant) |
| Specification Supplement | Welded pipe: wall thickness is usually SCH 5S~SCH 80S (American Standard pipe number)、Seamless pipe: outer diameter tolerance is usually ±0.1mm, wall thickness ±10% | Wall thickness | 0.1mm~50mm |
| Outer diameter | 0.5mm (capillary) ~ 2000mm (large diameter) | Length | 1m~12m (fixed length/random) |
| Industry Solutions |
| industry | Recommended materials | Surface treatment | Key Benefits |
| Oil extraction | S31803 Duplex Steel | Sand blasting (Sa2.5) | H₂S stress corrosion resistance |
| Biopharmaceuticals | 316L-EP | Electrolytic polishing | Eliminate microbial retention |
| Food Machinery | 304 NO | Inner wall #400 mesh | Passed NSF 61 drinking water certification |
| nuclear power | 347H | Pickling passivation | Radiation embrittlement resistance (≥10⁹ rad) |
Fluids Stainless Steel Seamless Pipes/Tubes
High Pressure Stainless Steel Seamless Pipes/Tubes
Structural Stainless Steel Seamless Pipes/Tubes
Sanitary Stainless Steel Seamless Pipes/Tubes
| Material system |
| Material Type | International Brand | Features and advantages | Extreme conditions |
| Basic | 304/304L | General corrosion resistance, cost-effective | Normal temperature corrosive medium |
| Corrosion resistant type | 316/316L | Chloride ion corrosion resistance (Mo ≥ 2.1%) | Seawater and chemical pipelines |
| High temperature type | 310S | Anti-oxidation (≤1150℃) | Boilers, heat exchangers |
| Special type | S32750 | Dual-phase steel (strength ≈ 2 times that of carbon steel) | Deep sea drilling platform |
| Global Standard Comparison |
| GB/T14976 (fluid pipe), GB13296 (boiler pipe) |
| ASTM A213 (boiler tube), ASTM A269 (sanitary), ASTM A312 (industrial pipe) |
| European Union | EN 10216-5 (Pressure Equipment) |
| JIS G3459 (for pipes), JIS G3463 (for boiler tubes) |
| Specifications cover all scenario requirements |
| Production process | Outer diameter range (mm) | Wall thickness range (mm) | Measure Precision |
| Hot rolling/extrusion | Φ54-480 | 4.5-45 | ±1.0% |
| Cold drawn/cold rolled | Φ6-200 | 0.5-21 | ±0.5% |
| Surface treatment |
| Processing | International Code | Appearance Features | Hygiene level | Application Areas |
| Pickling passivation (AP) | No.1 | Uniform matte silver white | Industrial Grade | Chemical structural parts |
| Mechanical polishing (MP) | No.3 | Directional grain (#180-400 mesh) | ISO 2037 Food Grade | Dairy Equipment |
| Bright annealing (BA) | BA | Micro-reflective non-oxidized skin | DIN 17458 Ultra High Purity | Semiconductor gas circuit |
| Electrolytic polishing (EP) | #8K Mirror | Mirror surface (Ra≤0.4μm) | ASME BPE Pharmaceutical Grade | Bioreactor |
Rich product range price concessions
Q: How long is the life of stainless steel pipes? What are the advantages compared with PPR pipes?
A: Theoretical life span is 70 years, much longer than PPR pipe (about 10-15 years) Core advantages: no plasticizer precipitation, high temperature resistance (≤800℃), burst resistance (no deformation when alternating between hot and cold)
Q: How to confirm the actual wall thickness of stainless steel pipe?
A: Provide the actual measured data of the vernier caliper
Q: How to meet food grade/pharmaceutical grade requirements?
A: Certification: FDA 21 CFR 177.2600 (food grade), ASME BPE (pharmaceutical grade) Process: The inner wall needs BA (bright annealing) or EP treatment to ensure the roughness Ra < 0.4μm
Q: What are the key points to pay attention to during installation? A: Connection method: Compression type: Quick sealing, requires special tools, suitable for home renovation Argon arc welding: High-strength connection, suitable for industrial high-pressure pipelines Cutting specifications: Use a special pipe cutter to remove burrs to avoid scratching the sealing ring and causing water leakage Q: How to maintain it in daily life? A: Avoid contact with soy sauce and strong acid liquids (easy to cause chemical reactions) Surface scratches can be repaired with stainless steel care agent + grinding wheel Wipe regularly with a soft cloth dipped in neutral detergent to maintain gloss
Certifications & compliance
CE
Complies with EU standards
Saudi Arabia
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