Stainless Steel Butt Weld 90° SR Elbow ASME B16.9 Class150 Seamless

Price Negotiable
Price: Negotiable
MOQ: 1PC
Delivery Time: 15-30 Workdays
Brand: TOBO
Product Description

Stainless Steel Butt Weld 90° SR Elbow ASME B16.9 Class150 Seamless

 

1. Product Description 

The stainless steel butt welding elbow is a premium-grade pipe fitting produced for use in high-integrity welded pipeline systems. Manufactured using state-of-the-art hot extrusion and cold sizing processes, this elbow delivers exceptional dimensional precision and surface finish. The product is solution-annealed and quenched to achieve optimal corrosion resistance and mechanical properties. Each fitting is carefully inspected and tested at multiple stages during production, ensuring that it consistently meets or exceeds the requirements of relevant international standards. The smooth internal surface and precisely machined bevel ends ensure rapid fit-up and reliable welding results.

2. Product Applications

This elbow serves as an essential component in welded piping systems where directional changes must be executed with maximum reliability. Typical applications include:

  • Crude oil transmission pipelines – long-distance onshore pipelines with frequent directional changes.

  • Natural gas distribution networks – city gate stations and high-pressure transmission laterals.

  • Petrochemical cracking units – ethylene and propylene production furnace outlet piping.

  • Ammonia synthesis plants – high-pressure loop piping operating at 150–350 bar.

  • Methanol production facilities – reformer outlet and synthesis gas transfer lines.

  • Sour water stripping units – corrosion-resistant piping for H₂S-containing wastewater.

  • Pharmaceutical clean utilities – purified water, water for injection, and clean steam distribution.

  • Agricultural irrigation systems – large-diameter welded steel pipeline networks.

  • Mine dewatering systems – abrasive slurry and tailings disposal pipelines.

  • LNG bunkering facilities – ship-to-shore transfer lines for marine fuel.

3. Product Advantages

  • Guaranteed material integrity – every melt is spectrometrically analyzed to verify composition; rejects are segregated before forming, ensuring only certified material enters production.

  • Optimized grain structure – the solution annealing process dissolves carbides and refines grain size, enhancing resistance to intergranular corrosion and improving ductility for welding.

  • High-quality bevel finish – machined rather than ground bevels ensure no heat-affected zones remain on the bevel surface, preventing preferential corrosion sites.

  • Reduced installation labour – the close dimensional tolerances reduce fit-up time significantly; in many cases, installation can be completed 40% faster compared to field-prepared bevels.

  • Seamless integration with pipeline systems – manufactured to standard center-to-end dimensions, allowing direct replacement without system re-engineering.

  • Crevice corrosion protection – the smooth bore eliminates crevices where stagnant media could accumulate, extending service life in chloride-bearing environments.

  • Predictable welding outcomes – consistent material properties and bevel geometry enable the generation of reproducible welding procedure qualifications, reducing the need for requalification.

  • Global project acceptance – products manufactured to multiple international standards and available with third-party inspection reports are accepted on projects worldwide without additional requalification.

4.Key Product Parameters

Parameter Specification / Range
Material Grades 304, 304L, 316, 316L, 321, 347, 309S, 310S, 316Ti, 317L, 904L, 2205, 2507, 1.4462, 1.4410
Design Codes ASME B16.9, GB/T 12459, GB/T 13401, SH/T 3408, HG/T 21631, EN 10253-3, DIN 2605, JIS B2312, GOST 17375
Product Range DN 15 – DN 1800 (NPS ½" – 72")
Wall Thickness Series SCH 5S, 10S, 20S, 30S, 40S, 80S, STD, XS, XXS, SCH 20, 30, 40, 60, 80, 100, 120, 140, 160
Radius Types 1.5D (LR), 1.0D (SR), and custom radii from 2D to 12D
Angle Offering 22.5°, 30°, 45°, 60°, 90°, 180° plus any custom angle
Bevel Preparation Single bevel or compound bevel per ASME B16.25, with 1.6mm ± 0.8mm root face
Outside Diameter Tolerance ±1.6mm for NPS ≤ 24; ±2.4mm for NPS > 24
Wall Thickness Tolerance ±12.5% of nominal wall thickness
Center-to-End Tolerance ±2mm for sizes up to DN 300; ±3mm for larger sizes
Surface Quality No cracks, laminations, or injurious defects; surface roughness ≤ 6.3μm Ra
Passivation Nitric acid passivation per ASTM A967; ferroxyl test (copper sulfate) to confirm passivation effectiveness
Marking Standard MSS SP-25 compliant; grade, size, schedule, heat number, and supplier identification
Documentation Package Mill test certificate, chemical analysis, tensile properties, hardness, and grain size report
Third-Party Inspection BV, SGS, TÜV, DNV, or Lloyd's inspection available upon request

 

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.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company TOBO STEEL GROUP CHINA
Location 2F,Building7,Baolong Center,No.689,Xiwang Road,Jiading District,Shanghai,201800,China
Contact Person Joy Wang

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