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{"title":"316 & 316L Stainless Steel Tee \/ Butt welding fittings 1\/2 - 72 inch","imgUrl":"https:\/\/img.chinax.com\/nimg\/58\/66\/9178df1cb3c61fe24c07d42d2d06-200x200-1\/316_26_316l_stainless_steel_tee_2f_butt_welding_fittings_1_2f2_72_inch.jpg","attrs":{"Brand Name":"TOBO","Model Number":"Equal Tee","Certification":"SGS\/BV\/ABS\/LR\/TUV\/DNV\/BIS\/API\/PED","Place of Origin":"China"}}
{"title":"Stainless Steel SUS304 Pipe Fittings Equal Tee 10 Inch ASME B16.9 3 Way","imgUrl":"https:\/\/img.chinax.com\/nimg\/a0\/f2\/dead89aff80ab9b346cbd2f9f967-200x200-1\/stainless_steel_sus304_pipe_fittings_equal_tee_10_inch_asme_b16_9_3_way_connector.jpg","attrs":{"Brand Name":"TOBO","Model Number":"TOBO-Elbow","Certification":"SGS\/BV\/ABS\/LR\/TUV\/DNV\/BIS\/API\/PED","Place of Origin":"China"}}
{"title":"ASME B16.9 A403 WP316L Butt Welding 6" Sch10s Stainless Steel Tee Pipe Fitting","imgUrl":"https:\/\/img.chinax.com\/nimg\/74\/40\/b4e8d886eab45f3e2227c03ae8c4-200x200-1\/asme_b16_9_a403_wp316l_butt_welding_6_22_sch10s_stainless_steel_tee_pipe_fitting.jpg","attrs":{"Brand Name":"TOBO","Model Number":"TOBO-Elbow","Certification":"SGS\/BV\/ABS\/LR\/TUV\/DNV\/BIS\/API\/PED","Place of Origin":"China"}}
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Marine Offshore Grade High Pressure Stainless Steel Butt Weld Tee 2500lbs SCH80S 316L
The Marine Offshore Grade High Pressure Stainless Steel Butt Weld Tee is purpose-engineered for the extreme conditions of offshore oil and gas platforms, FPSO vessels, and marine engineering projects. Fabricated from ASTM A403 WP316L with enhanced molybdenum content (2.0-3.0%) for superior pitting and crevice corrosion resistance in seawater and chloride-rich marine atmospheres, this high pressure tee is designed to ASME B16.9 with wall thickness sufficient for 2500lbs (Class 2500) pressure rating at ambient temperature. The SCH80S minimum wall thickness combined with WP316L material delivers PREN ≥24 for chloride pitting resistance equivalent to seawater service requirements. Each marine offshore grade high pressure stainless steel butt weld tee undergoes hydrostatic pressure testing at 1.5* rated pressure, with NDT and full certification documentation supporting DNV, ABS, and Lloyds Register marine classification requirements.
Technical Specifications
Parameter
Specification
Material Grade
ASTM A403 WP316L / UNS S31603 / 1.4404
Pressure Rating
Class 2500 (2500 lbs) per ASME B16.5 Pressure Class Equivalent
Type
Equal Tee / Reducing Tee
Size Range
1/2" - 12" (DN15 - DN300) for 2500lbs Rating
Wall Thickness
SCH80S Minimum (SCH160, XXS for Larger Sizes)
Standard
ASME B16.9, ASTM A403, NACE MR0175
Corrosion Resistance
PREN ≥24, Critical Pitting Temperature (CPT) ≥25°C per ASTM G48
Marine Classification
Designed to DNV, ABS, Lloyds Register, BV Requirements
Testing
Hydrostatic Test 1.5* MAWP, RT/PT/PMI Available
Surface Protection
Pickled and Passivated, Optional Marine-Grade Coating
Key Advantages & Application Fields
Superior Seawater Corrosion Resistance: The marine offshore grade WP316L high pressure stainless steel butt weld tee with 2.0-3.0% molybdenum provides PREN ≥24, delivering proven resistance to pitting and crevice corrosion in chloride-rich marine environments including splash zones and submerged service
2500lbs High Pressure Capacity: SCH80S minimum wall thickness ensures the butt weld tee safely contains design pressures up to Class 2500 rating, suitable for high-pressure hydraulic systems, chemical injection, and wellhead control lines on offshore installations
Offshore Production Platforms: Designed for topside process piping, seawater lift systems, firewater ring mains, and produced water handling systems on fixed and floating production platforms
FPSO & FLNG Vessels: Marine-grade corrosion resistance combined with high pressure rating meets demanding FPSO topside process and utility piping requirements under dynamic vessel motion conditions
Subsea Manifolds & Templates: WP316L material with 2500lbs pressure rating is suitable for subsea production system manifold piping operating at extreme water depths and pressures
Marine Engineering & Shipbuilding: Qualified for naval and commercial vessel seawater cooling, ballast water treatment, and firefighting system piping requiring marine classification society approval
Frequently Asked Questions
What makes these stainless steel butt weld tees suitable for marine offshore applications?
Our marine offshore grade high pressure stainless steel butt weld tee in WP316L is specifically qualified for offshore service through multiple attributes. The 2.0-3.0% molybdenum content provides the critical pitting resistance equivalent number (PREN ≥24) necessary for seawater and marine atmosphere corrosion resistance. The 2500lbs pressure rating accommodates the high-pressure systems common on offshore platforms. SCH80S wall thickness provides additional corrosion allowance beyond pressure requirements. Manufacturing controls ensure compliance with NACE MR0175 for sour service when H2S may be present in produced fluids. And the complete material certification package with PMI testing supports the traceability requirements of major marine classification societies including DNV, ABS, Lloyds Register, and Bureau Veritas for offshore installation approval.
How does the 2500lbs pressure rating affect wall thickness and weight of the tee fitting?
The 2500lbs pressure rating for our marine offshore grade high pressure stainless steel butt weld tee requires substantially thicker walls than standard SCH40 or SCH80 fittings. For example, a 4" NPS Class 2500 butt weld tee in WP316L typically requires a wall thickness equivalent to SCH160 or XXS, which is approximately 3-4 times thicker than standard SCH40. This increased wall thickness provides dual benefits: safe pressure containment for high-pressure offshore systems and additional corrosion allowance that extends service life in aggressive marine environments. The thicker walls also increase fitting weight, which influences pipe support design. We provide detailed dimensional drawings with exact weights for engineering integration, and our technical team can assist with pipe stress analysis input data for your offshore project.
What marine classification society certifications do you support?
Our marine offshore grade high pressure stainless steel butt weld tee manufacturing program is designed to support certification by major marine classification societies including DNV (Det Norske Veritas), ABS (American Bureau of Shipping), Lloyds Register, Bureau Veritas (BV), and China Classification Society (CCS). We provide the full documentation package required for classification society approval: EN 10204 3.1 material test certificates, hydrostatic pressure test reports, NDT reports (RT, PT, PMI), heat treatment records, and manufacturing process documentation. For projects requiring classification society surveyor witness of testing, we can coordinate surveyor attendance at our facility during production and final inspection. Early engagement with your classification requirements helps us ensure all certification deliverables are met on schedule.
TOBO GROUP sales head offce in Shanghai.
We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ... TOBO GROUP sales head offce in Shanghai.
We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ...
