Butt-welding Pipe Fittings Equal Tee Stainless Steel ASTM A403 Corrosion

Product Specification

304/316L Stainless Steel Butt Weld Tee Fitting Equal & Reducing Corrosion Resistant

1. Product Introduction

The Seamless Stainless Steel Butt Welding Tee is a high-quality pipe fitting designed to create branch connections in pipeline systems. Available in both Equal Tee (same diameter on all three ends) and Reducing Tee (branch pipe with different diameter), this fitting provides flexible solutions for various piping layouts. Manufactured from premium 304 or 316L stainless steel, it features a seamless construction that eliminates weld seams and ensures uniform wall thickness. Fully compliant with ASME B16.9 and ASTM A403 standards, the butt-welding connection guarantees a permanent, leak-proof joint with exceptional strength and durability, making it ideal for demanding industrial applications.

2. Key Specifications

3. Applications

This tee fitting is widely used in pipeline systems requiring branch connections under various service conditions. Typical applications include:

• Petrochemical Industry: Branch connections in crude oil, refined products, and chemical processing pipelines.

• Oil & Gas Transmission: High-pressure gas and liquid distribution networks.

• Power Generation: Steam, boiler feedwater, and cooling water systems.

• Pharmaceutical & Food Processing: Sanitary-grade pipelines for clean fluid transfer.

• Water Treatment & Desalination: Corrosion-resistant piping systems for municipal and industrial water treatment.

4. Product Advantages

• Seamless Construction: The seamless manufacturing process eliminates weld seams, reducing the risk of corrosion initiation at welded areas and ensuring uniform wall thickness and structural integrity throughout the fitting.

• Superior Corrosion Resistance: 304 grade offers excellent general corrosion protection; 316L with molybdenum addition provides enhanced resistance to pitting and crevice corrosion in chloride-rich environments.

• High Strength & Reliability: Stainless steel delivers high tensile strength and toughness. The butt-weld joint eliminates threaded weak points, significantly reducing leakage risks and ensuring long-term system reliability.

• Precision Manufacturing: Strict dimensional control ensures accurate branch angles, smooth internal surfaces, and consistent wall thickness, minimizing flow resistance and pressure loss.

• Standard Compliance: Fully compliant with ASME B16.9 and ASTM A403, ensuring global interchangeability and compatibility with other standard pipe components.

• Versatile Options: Available in both Equal and Reducing configurations to meet diverse piping layout requirements.

5. Function

The butt welding tee creates a branch connection in a pipeline, allowing fluid or gas to flow from the main run into a branch line at a 90-degree angle. The Equal Tee maintains the same diameter across all three openings for balanced flow distribution, while the Reducing Tee connects a smaller branch pipe to a larger main pipe. Once welded, it becomes an integral part of the pipeline, capable of withstanding high pressure, thermal expansion, and mechanical stress.

6. Usage Instructions

• Preparation: Clean and bevel pipe ends; remove oil, rust, and debris.

• Alignment: Properly align tee with main pipe and branch pipe axes to ensure accurate fit-up.

• Welding: Use TIG or MIG welding with matching filler metal (ER308L for 304, ER316L for 316L).

• Post-Welding: Apply pickling and passivation to restore corrosion resistance; inspect weld quality via visual or NDT methods (PT or RT recommended).

7. Precautions

• Wear appropriate protective gear during welding and handling.

• Control welding parameters to prevent overheating and carbide precipitation (especially for 304 grade).

• For 316L material, maintain low carbon input to preserve maximum corrosion resistance.

• Post-weld pickling and passivation are essential to restore the passive oxide layer.

8. Shipping & Delivery

Global shipping via sea, air, or express courier. Standard orders dispatch within 7–15 working days after order confirmation. Custom orders may require additional lead time. All goods are securely packed with tracking information provided upon shipment.

9. Payment Terms

Flexible options: T/T (30% deposit + 70% balance before shipment), L/C for bulk orders, or negotiated terms based on order value.

10. Packaging

Each tee is anti-rust coated or oiled, wrapped in plastic film, and secured in wooden or steel export crates. Custom packaging solutions are available upon request.

11. After-Sales Service

We offer replacement or refund for manufacturing defects within the warranty period. Please provide photos or inspection reports for prompt assistance. Non-quality returns must be unused and in original packaging, with return shipping borne by the buyer.

FAQ

1. Are you trading company or manufacturer ?
    We are manufacturer ,You can see the certification.
2. How long is your delivery time?
    Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
    Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
    Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.