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China Industrial chemistry stainless steel welded tube Manufacturer, Supplier, Factory

Our range of Chemical grade welded stainless steel tube is manufactured to deliver consistent performance in aggressive chemical environments. Each Industrial stainless welded piping for chemistry system relies on precision fabrication and material integrity to maintain safety and efficiency. For demanding operations, our Chemical process stainless steel welded pipe offers superior resistance to pitting and stress corrosion cracking under extreme temperatures. We also supply specialized Chemistry field welded stainless tubing that conforms to ASTM A312 and ASTM A269 standards, ensuring full traceability and uniform mechanical properties. These welded tubes are produced using high-frequency welding and bright annealing, resulting in a smooth inner bore and minimal oxide scale. With a focus on dimensional accuracy, they are suitable for heat exchangers, reactor coils, and process instrumentation in organic and inorganic chemical plants.


Industrial Chemistry Stainless Steel Welded Tube constructions are engineered to handle a wide spectrum of media, including chlorides, sulfuric acid, caustic solutions, and hydrocarbon streams. The selection of raw strip is restricted to European and Asian mills with ISO 9001 and PED certifications, and each coil undergoes positive material identification before forming. Welding parameters are controlled through real-time laser monitoring, and post-weld processing includes 100% eddy current or hydrostatic testing. This commitment to quality guarantees ovality within ±0.75% and straightness deviations below 1 mm per meter, vital for automatic orbital welding in modular chemical skids. Extended lengths up to 20 meters can be supplied upon request, minimizing field joints and potential leak paths.

  • Material grades: 304/304L, 316/316L, 316Ti, 321, 904L, 2205 duplex, 254SMO super austenitic
  • Outer diameter range: 6 mm to 219.1 mm (1/4” to 8” nominal)
  • Wall thickness: 0.8 mm to 12.7 mm (Sch 5S to Sch 80S)
  • Surface finishes: bright annealed, pickled & passivated, mechanically polished to Ra ≤ 0.8 μm
  • Testing capabilities: positive material identification, intergranular corrosion test per ASTM A262, PMI, full NDE
Parameter Specification
Standard length 6 m fixed lengths, random lengths, or cut-to-size
Tolerances OD ±0.2% / WT ±10% as default; tighter upon request
Welding method High-frequency induction welding or TIG orbital welding
Heat treatment Bright annealed at 1040–1100°C with rapid quenching
Pressure rating Calculated per ASME B31.3; typical design pressure up to 320 bar
Certifications EN 10204 3.1, dual certification, NACE MR0175/ISO 15156

Each Industrial Chemistry Stainless Steel Welded Tube bundle is edge-protected, wrapped in moisture-resistant film, and shipped in seaworthy crates to prevent transit damage. Markings including heat number, dimensions, and mill identification are laser-etched on the outer surface for permanent legibility. Application support extends to corrosion loop recommendations and compatibility studies, helping engineering teams select the optimum alloy for mixed-acid environments. The tube inventory includes both stock lengths and rapid-turnaround custom dimensions for shutdowns and plant expansions, maintaining a buffer of frequently used sizes in 316L and 2205. Integrated supply of matching butt-weld fittings and automatic O-rings further streamlines piping assembly. Standardization on clean-room packaging for semiconductor-grade derivatives ensures the same production line meets ultra-high-purity specifications without cross-contamination risk. This flexible manufacturing approach allows batch sizes from small development volumes to container-level deliveries while holding mechanical values within tight statistical process control limits.

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