ASTM A790 Duplex Stainless Steel Seamless Pipe 6000mm ISO Certified

ASTM A790 Duplex Stainless Steel Seamless Pipe 6000mm ISO Certified

Discover MTSCO, Your Factory Complexes Partner

MTSCO has nearly 20 years of experience in the industrial metal sector. We adopt a unique "Factory Complex" operation model, distinguishing us from single-source manufacturers. Our core factory, HUIXN PIPE, focuses on the R&D and manufacturing of high-quality austenitic and duplex stainless steel seamless pipes, holding ISO 9001, PED, and AD2000 certifications. Beyond pipes, MTSCO integrates supply chain resources for fittings, flanges, and special alloys. We do not just supply products; we are committed to providing "one-stop piping system solutions" for global EPC contractors and end-users.

Strict Inspection Methods

To ensure every seamless pipe meets international standards, we execute a comprehensive quality control process:

·Dimension Inspection: We use high-precision measuring tools to verify the Outside Diameter (OD), Wall Thickness (WT), and Length of every single pipe, strictly controlling tolerance ranges.

·Visual Inspection: QC personnel conduct 100% visual checks under sufficient lighting to ensure internal and external surfaces are smooth and free from defects like cracks, folds, or scabs, while also verifying beveling quality.

·Hardness Test: We verify material hardness to assess strength and wear resistance. Crucially, this ensures the hardness level meets standards to prevent brittle fracture risks in sulfur-containing environments caused by excessive hardness.

·Non-Destructive Testing (NDT): We perform 100% Eddy Current Testing (ET) or Ultrasonic Testing (UT) to ensure the pipe wall is free from cracks or hidden sub-surface defects.

·Hydrostatic Test: Pipes are tested at standard pressures to verify sealing integrity and structural strength under high-pressure conditions.

·PMI Test: Using portable spectrum analyzers, we conduct on-site chemical composition detection to guarantee that critical elements like Nickel, Molybdenum, and Chromium meet the required standards.

Technical Specifications Of Duplex Seamless Pipe

Packing Of Duplex Steel Pipe

Where Can Our Seamless Pipes Perform?

ASTM A790 Duplex Stainless Steel Seamless Pipes are widely used in challenging industrial environments due to their superior yield strength and corrosion resistance. MTSCO's products focus on serving the following core sectors:

·Offshore Oil & Gas: Used for FPSO vessels, subsea pipelines, and extraction platforms. Duplex steel’s excellent resistance to Chloride Stress Corrosion Cracking (SCC) makes it the preferred material against seawater corrosion.

·Desalination Plants: Applied in Seawater Reverse Osmosis (SWRO) high-pressure piping systems. Our pipes can withstand pitting and crevice corrosion in high-pressure seawater environments, ensuring long-term stable operation.

·Chemical & Petrochemical Industry: Used for reactors, and acid gas handling lines. Duplex steel effectively resists corrosion from organic acids and chloride-containing media, extending equipment maintenance cycles.

·Pulp & Paper: Used for digesters, bleaching equipment, and black liquor tanks. The material's high strength and abrasion-corrosion resistance effectively cope with the complex conditions of high temperature and high alkalinity during production.

FAQ

Q1: What is the difference between Duplex 2205 and Super Duplex 2507 pipes?

A1: Duplex 2205 (S32205) is the standard grade suitable for most corrosive environments. Super Duplex 2507 (S32750) contains higher Chromium, Molybdenum, and Nitrogen, offering superior corrosion resistance (higher PREN value) for extremely severe conditions like deep-sea applications. MTSCO stocks both grades to meet varying project budgets and technical requirements.

Q2: What lengths of seamless pipes can you supply?

A2: We offer a wide range of dimensions. Beyond standard lengths, leveraging the advanced equipment at our holding factory, we can supply long-length pipes up to 25 meters. This capability significantly reduces the number of welds required in your project, enhancing overall system reliability.

Q3: Do you offer customization for special sizes and materials in Oil & Gas projects? A3: Yes, we do. MTSCO’s close integration with our holding factory allows for exceptional manufacturing flexibility. Whether you require non-standard sizes, special wall thicknesses, or high-performance alloy materials, we can provide tailored production solutions to meet your specific project requirements.