TOKO TECH Welded Pipe Products Introduction

Company Overview

TOKO TECH is a leading manufacturer of high-performance welded pipes, specializing in stainless steel, duplex/super duplex, and nickel alloy materials. Our welded pipes are engineered for demanding applications in corrosive, high-temperature, and high-pressure environments, offering cost-effective solutions without compromising performance.

Product Categories

1. Material Specifications

Material Type	Common Grades	Standards	Key Characteristics
Stainless Steel	304/304L, 316/316L, 317L, 321, 347, 904L, 254 SMO	ASTM A312, A358, A269	Excellent general corrosion resistance, good formability
Duplex Steel	2205 (S31803/S32205), 2507 (S32750)	ASTM A790, A928	High strength, excellent chloride stress corrosion cracking resistance
Super Duplex	2507, Zeron 100, Uranus 52N+	ASTM A790, DNVGL-RU-SHIP Pt.2 Ch.6	PREN > 40, superior corrosion resistance
Nickel Alloys	Inconel 600/625, Hastelloy C-276/C-22, Monel 400	ASTM B704, B705, B804	Exceptional corrosion resistance in extreme environments

2. Welding Methods

TIG Welding (GTAW): For high-purity applications, pharmaceutical, food grade
Plasma Welding (PAW): High-speed production with excellent weld quality
Laser Welding: Precision welding for thin-wall pipes
Submerged Arc Welding (SAW): For thick-wall, large diameter pipes
High-Frequency Welding (HFW): For cost-effective production of standard grades

Product Specifications

1. Size Range

Parameter	Stainless Steel	Duplex Steel	Nickel Alloys
OD Range	6mm - 2000mm	12mm - 1200mm	8mm - 800mm
Wall Thickness	0.5mm - 30mm	1.0mm - 25mm	0.8mm - 20mm
Length	Up to 18m standard	Up to 12m standard	Up to 12m standard
Tolerances	ASTM A312/ASME B36.19	ASTM A790	ASTM B704

2. Pressure Ratings

Schedule	Working Pressure	Test Pressure	Temp. Range
SCH 10S	Up to 150 bar	1.5 x WP	-196°C to 400°C
SCH 40S	Up to 300 bar	1.5 x WP	Material dependent
SCH 80S	Up to 500 bar	1.5 x WP	Material dependent

Heat Treatment & Finishing

1. Heat Treatment Processes

Material	Process	Temperature	Purpose
Austenitic SS	Solution Annealing	1040-1150°C	Corrosion resistance restoration
Duplex Steel	Solution Annealing	1020-1100°C	Phase balance optimization
Nickel Alloys	Annealing/ST	950-1150°C	Stress relief, recrystallization

2. Surface Finishes

2B Finish: Standard mill finish, Ra ≤ 0.6μm
BA Finish: Bright annealed, highly reflective
Polished: Mechanical polished, Ra ≤ 0.4μm
Electropolished: Ra ≤ 0.3μm, for ultra-clean applications
Pickled & Passivated: Enhanced corrosion resistance

Quality Control & Testing

Chemical Analysis

PMI Testing: Positive Material Identification
Spark Testing: Rapid alloy verification
OES Analysis: Full chemical composition
Intergranular Corrosion: ASTM A262 Practices B, C, E

Technical Support Services

Material Selection: Corrosion resistance analysis, life cycle costing
Weld Procedure: Qualified WPS/PQR for all materials
Fabrication Support: Bending, flanging, installation guidance
Failure Analysis: Root cause investigation and prevention
Stock Program: JIT delivery, emergency order processing
Field Services: On-site welding supervision, repair services

Why Choose TOKO TECH Welded Pipes?

Advanced Technology: State-of-the-art welding and inspection equipment
Material Expertise: 15+ years experience in special alloy fabrication
Quality Assurance: 100% testing and full traceability
Custom Capability: Non-standard sizes, special lengths, custom alloys
Global Supply: Export to 40+ countries with proven reliability
Technical Partnership: Engineering support from design to installation
Competitive Lead Time: 4-8 weeks for standard items, expedited available
Certification Support: Complete documentation package for all projects

Contact Us

For technical specifications, quotations, or project consultation, our engineering team is ready to assist. TOKO TECH provides reliable welded pipe solutions for your most challenging applications.

TOKO TECH – Precision Welded Pipes for Demanding Applications

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