Product Series & Specifications

Material Grade:

• Unalloyed Zirconium: R60700(Zr-0) / R60701 / R60702(Zr-1): This series consists of commercial-grade pure zirconium, which exhibits extremely high chemical inertness. In environments containing strong acids (sulfuric acid, hydrochloric acid, nitric acid) and strong alkalis, its corrosion resistance far exceeds that of ordinary stainless steel and nickel-based alloys, making it a critical material choice for chemical corrosion-resistant equipment.

• Zirconium Alloys: 1. R60704(Zr-3): Zirconium-tin alloy. By adding elements such as tin (Sn), this alloy enhances mechanical strength and creep resistance while retaining zirconium’s excellent corrosion resistance, thereby balancing structural strength with chemical stability.

  2. R60705 (Zr-5): Zirconium-Niobium Alloy (Zr-Nb 2.5%). As a high-strength industrial zirconium alloy, it offers excellent tensile strength and high-temperature stability, making it particularly suitable for industrial components with stringent requirements for pressure resistance and structural strength.

Applicable Standards:

Our production and quality control strictly adhere to the following international benchmarks:

Manufacturing & Product Standards:

• ASTM B523 / ASME SB-523: The primary standard for Seamless and Welded Zirconium Tubes used in heat exchangers and condensers. It ensures precise

wall thickness tolerances and passing results for flaring and flattening tests.

• ASTM B658 / ASME SB-658: Standard specification for Zirconium Pipe, focusing on fluid transport systems and overall structural integrity.

Raw Material & Forging Standards:

• ASTM B493: Standard for Zirconium Forgings. Used for producing high-quality billets for seamless tubes and matching components like forged flanges and fittings.

• ASTM B494: Standard for Primary Zirconium (Sponge). Defines the purity of the raw zirconium sponge, the starting point for ensuring low impurity levels across all grades.

• ASTM B550: Standard for Zirconium Bars and Wire, often used as feedstock for machining or tube production.

Manufacturing Process & Quality Control

High-Purity Melting & Tube Forming: Utilizing advanced vacuum melting (VAR/EB Melting) technology to produce high-purity zirconium ingots/billets. Subsequently, seamless zirconium tubes are manufactured through rigorously controlled tube billet preparation, extrusion, and precision cold drawing and/or cold rolling (pilgering) processes. For welded zirconium tubes, high-quality TIG/GTAW welding techniques are employed.

Precision Heat Treatment: Implementing precise annealing treatments to relieve processing stress, optimize grain structure, and ensure the material's ductility, mechanical properties, and long-term stability.

Rigorous Quality Testing (INSPECTIONS):

Raw Material Inspection: Strict chemical composition analysis (Spectro Test), including control over trace impurities.

Internal Flaw Detection: Ultrasonic Testing (UT) and Eddy Current Testing (ET) are performed on finished tubes to ensure the absence of internal cracks, inclusions, porosity, and other defects.

Geometric Dimensions & Visual Inspection: Precise measurement of OD, WT, length, ovality, straightness, and high-precision visual and automated inspection for surface (internal and external) defects.

Pressure Testing: Hydrostatic testing or pneumatic testing to verify the tube's pressure resistance and sealing integrity under operating conditions.

Mechanical Properties Testing: Tensile Test (Elongation, Yield Strength, Tensile Strength), Hardness Test, Flaring Test, Flattening Test, etc.

Metallographic Analysis: Evaluation of grain size and microstructure to ensure conformity with standards and final application requirements.

Corrosion Testing: Corrosion tests in specific corrosive media (e.g., ASTM G28, G48) are performed to verify durability in harsh chemical environments.

Nuclear-Grade Performance Testing: (If supplying nuclear-grade zirconium) Low thermal neutron capture cross-section testing can be performed.

Traceability: Comprehensive material reports are provided, ensuring complete traceability from raw material to final pipe/tube, with support for independent third-party certification.

Why Choose Our Zirconium Pipes / Tubes?

Extensive Experience: Specialized in the R&D and manufacturing of high-quality zirconium pipes/tubes for over 19 years, accumulating vast technical expertise and rigorous quality control experience in nuclear-grade materials, extreme corrosion fluid conveyance, and precision tube manufacturing.

Superior Melting & Processing: Utilizing advanced Vacuum Arc Remelting (VAR) or Electron Beam (EB) Melting ensures high-purity and dense zirconium ingots. Through precision cold drawing/cold rolling processes for seamless tubes, or high-quality welding processes for welded tubes, we guarantee pipe/tube dimensional accuracy, wall thickness uniformity, and superior performance.

Quality Assurance: All products are accompanied by comprehensive test reports, and independent third-party certifications (e.g., TUV, SGS, BV, Lloyd's Register) are readily available upon request, to ensure product quality strictly conforms to relevant standards and is committed to exceeding customer expectations.

ISO 9001:2015 Certified Facility: Strictly adhering to international quality management systems, we rigorously follow high standards and pursue continuous improvement at every step from raw material procurement to finished product delivery.

Customized Services: Whether for standard dimensions and grades or custom zirconium pipes/tubes based on customer drawings and specific requirements (e.g., special purity, unique dimensions, wall thickness, length, surface condition), we are committed to providing exclusive solutions.

Flexible Procurement & Stock: No strict minimum order quantity (MOQ) limit, respecting every user's purchasing requirements; common raw materials or finished products are kept in stock to expedite supply.

Test Samples Available: Free test samples can be provided for select products. According to company policy, customers are responsible for sample shipping costs.