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Stainless Steel Welded Pipe

ASTM A312/A358 welded pipes with full penetration weld, ideal for water treatment, desalination, and structural applications.

Welded pipe production
Welded pipe detail
Welded pipe packaging

Overview

TOKO TECH manufactures high-quality stainless steel welded pipes using advanced TIG and plasma welding processes with full joint penetration. Our welded pipes offer an excellent cost-performance ratio for moderate to large diameter applications where seamless pipe may be uneconomical. All welds are 100% radiographically or eddy-current inspected.

Key Features & Quality Control

100% radiography or eddy current on weld seam
Full penetration TIG and plasma welding processes
Post-weld solution annealing for corrosion resistance
Welder qualification per ASME Section IX
Bead conditioning (ID/OD) for sanitary applications
Weld decay testing (A262 Practice E) for L-grades
Cut to length and bevel end preparation

Specifications

ProcessMaterialOD RangeWT RangeStandard
TIG Welded304 / 304L12.7 – 2540mm (1/2" – 100")0.5 – 25mm (SCH 5S – SCH 80S)ASTM A312 / A358
TIG Welded316 / 316L12.7 – 2540mm (1/2" – 100")0.5 – 25mm (SCH 5S – SCH 80S)ASTM A312 / A358
TIG WeldedDuplex 220512.7 – 1219mm (1/2" – 48")1.0 – 20mmASTM A790 / A928
Plasma Welded304 / 304L12.7 – 610mm (1/2" – 24")0.5 – 6mmASTM A312 / A249
Plasma Welded316 / 316L12.7 – 610mm (1/2" – 24")0.5 – 6mmASTM A312 / A249

Typical Applications

Water & Desalination

Cost-effective welded piping for SWRO desalination plants, water treatment facilities, and municipal distribution systems.

Structural & Architectural

Large-diameter welded pipes for offshore platform structures, handrails, and architectural exposed piping.

Food & Beverage

Smooth-bore welded tubes with polished ID/OD finishes for dairy, brewery, and food processing sanitary lines.

Pulp & Paper

Corrosion-resistant piping for digesters, bleach plants, and chemical recovery systems in pulp and paper mills.

Applicable Standards

ASTM A312ASTM A358ASTM A249ASTM A790ASTM A928ASME BPEEN 10217-7

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