If you are looking for high-quality stainless steel welded pipes that meet ASTM and EN international standards, with excellent corrosion resistance, dimensional accuracy, and mechanical strength, then GNEE's ASTM A358, ASTM A789, and EN 10217-7 stainless steel welded pipes are the perfect solution for your industrial projects.
With over 18 years of manufacturing and export experience, GNEE supplies a full range of welded stainless steel pipes that are widely used in chemical processing, food and beverage, heat exchangers, and marine applications. Our products are produced according to strict international standards, ensuring stable weld quality, smooth inner surfaces, and consistent wall thickness for high-performance fluid systems.
ASTM A358 Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe for General Service
ASTM A358, ASTM A789, EN 10217-7 Stainless Steel Welded Pipe Specifications
| Specification | ASTM A358 / ASTM A789 / EN 10217-7 |
|---|---|
| Material Grades | 304, 304L, 316L, 321, 347, 904L, Duplex S32205 / S32750 |
| Outside Diameter | 10 mm – 406 mm |
| Wall Thickness | 0.5 mm – 12 mm |
| Length | 6 m (standard) or customized |
| Welding Method | TIG / Plasma / Laser Welding |
| Surface Finish | Bright Annealed (BA), Pickled, Polished |
| Standards | ASTM A358 / A789, EN 10217-7, ASME SA312, DIN 17455 |
| Testing | Hydrostatic, Eddy Current, PMI, Visual & Dimensional |
Why Choose GNEE?
Over 18 years of export experience, serving clients in 60+ countries.
ISO 9001, SGS, BV, and TUV certified manufacturing and inspection systems.
Advanced TIG/plasma welding lines, bright annealing furnaces, and automatic inspection equipment.
Professional engineering support, custom cutting services, and rapid delivery capability.
Quality Control:
100% chemical analysis, dimensional inspection, and mechanical testing on every batch.
Advanced annealing, leveling, and surface treatment ensure precision, flatness, and corrosion resistance.
Packaging & Shipping
Protective Packaging: Moisture-proof film, steel straps, and wooden pallets or cases for export.
Marking & Labeling: Each pipe labeled with standard, grade, size, and heat number.
Delivery Time: Typically 7–15 working days depending on order size.
Shipping Methods: Sea freight, air freight, or express delivery depending on customer requirements.
