304 Stainless Steel Butt Weld 90 Elbow LR ASME B16.9 Class300

Product Specification

304 Stainless Steel Butt Weld 90 Elbow LR ASME B16.9 Class300

1. Product Description 

The stainless steel butt welding elbow is a high-performance pipe fitting manufactured for critical welded pipeline systems. Produced through advanced hot forging and heat treatment processes, the elbow offers a homogeneous grain structure and consistent mechanical properties throughout the cross-section. The precision-machined bevel ends ensure full penetration welding with minimal heat input, resulting in strong, crack-resistant joints. The product range covers both standard and special stainless steel grades, enabling optimal material selection for specific service environments including high-pressure, cryogenic, and highly corrosive conditions.

2. Product Applications

This elbow is employed in a diverse range of industries requiring dependable welded connections for directional flow changes. Key applications include:

• Upstream oil and gas – subsea manifolds, riser piping, and wellhead hook-ups.

• LNG infrastructure – liquefaction trains, storage tank piping, and vaporiser systems.

• Refinery processes – vacuum distillation, hydrodesulphurisation (HDS), and catalytic reforming units.

• Fertiliser production – ammonia and urea synthesis loop piping.

• Specialty chemicals – isocyanate, polyol, and polymer production lines.

• Metal processing – pickling lines, annealing furnace piping, and quench systems.

• Textile manufacturing – dyeing and finishing machine connections.

• Leather processing – chemical tanning and waste treatment piping.

• Electroplating facilities – corrosive chemical transfer and rinse water systems.

• Research laboratories – pilot plant and test loop installations.

​3. Product Advantages

• Enhanced high-temperature performance – H‑grade materials (304H, 316H, 321H, 347H) maintain creep strength and oxidation resistance at elevated temperatures, suitable for continuous operation above 550°C.

• Superior resistance to intergranular corrosion – stabilised grades (321, 347) and low‑carbon grades (304L, 316L) mitigate carbide precipitation along grain boundaries, ensuring reliable performance in welded condition.

• Precise wall thickness control – advanced mandrel forming ensures minimal thinning at the intrados, maintaining pressure integrity even after bending.

• Reduced welding distortion – consistent end preparation and squareness minimise shrinkage stresses, reducing alignment difficulties during multi‑joint assembly.

• Wide alloy selection – high‑nickel and super‑austenitic grades available for handling highly aggressive media such as hot chlorides, sulfuric acid, and phosphoric acid.

• Extended component life – the combination of material quality and manufacturing precision results in a fitting that resists pitting, crevice corrosion, and stress corrosion cracking, prolonging replacement intervals.

• Ease of post-weld inspection – smooth, consistent geometry enables straightforward interpretation of radiographic and ultrasonic test results.

• Lower life-cycle assessment – reduced maintenance frequency, less downtime, and minimal leakage risk contribute to a smaller environmental footprint over the product's service life.

4.Key Product Parameters

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.