Stainless Steel Seamless Butt Weld Pipe Fittings

Butt welding pipe fittings are components used to connect, branch, redirect, or reduce pipelines through butt-welded joints. The range includes elbows (45°/90°/180°), tees (equal/reducing), reducers (concentric/eccentric), and caps. Both ends are beveled for welding, creating a continuous, strong, and leak-resistant connection with the pipe. Manufactured from carbon steel, stainless steel, and alloy steel, they are suitable for high-pressure and high-temperature pipeline systems.

• Material: Carbon Steel (A234 WPB), Stainless Steel (304/304L, 316/316L), Alloy Steel (WP11, WP22)
• Nominal Size: 1/2" – 48" (DN15 – DN1200)
• Wall Thickness / Schedule: SCH10 – SCH160, STD, XS, XXS
• Type: Elbow (45°/90°/180°), Tee (equal/reducing), Reducer (concentric/eccentric), Cap
• Radius: Long Radius (LR, R=1.5D) / Short Radius (SR, R=1D)
• Connection: Butt Weld (Beveled End)
• Standards: ASME B16.9, ASTM A234, ASTM A403, DIN, JIS
• Surface Treatment: Anti-rust oil, pickled, passivated, or galvanized

• Petroleum and chemical processing pipelines
• Natural gas transmission and distribution systems
• Power generation and nuclear energy facilities
• Shipbuilding and offshore engineering
• Water treatment and municipal construction
• Food processing and general industrial piping

• Butt-welded joints provide high strength and reliable sealing
• Smooth inner bore minimizes turbulence and pressure loss
• Available in a wide range of sizes, schedules, and materials
• Uniform wall thickness at the joint ensures structural integrity
• Compatible with standard welding procedures and equipment
• Custom dimensions and materials available for specific projects

• Elbows change the direction of fluid flow (45°/90°/180°)
• Tees branch or merge flow in pipeline systems
• Reducers connect pipes of different diameters (concentric or eccentric)
• Caps close the end of a pipeline
• All fittings maintain system pressure integrity and allow efficient flow distribution

• Verify fitting type, size, schedule, and material match the pipeline design
• Inspect beveled ends for cracks, dents, or deformation before installation
• Clean pipe ends and fitting bevels; remove oil, rust, and debris
• Align the fitting with the pipe; control misalignment within 10% of wall thickness or 1 mm
• Tack-weld at multiple points to secure alignment
• Complete butt welding using an approved procedure (TIG root pass, SMAW or SAW fill/cap)
• Check dimensions and alignment after welding
• Perform pressure testing or non-destructive testing as required

• Do not subject fittings to impact or drop during storage and handling
• Keep stainless steel fittings away from carbon steel to prevent galvanic corrosion
• Ensure the pipeline is depressurized and drained before installation
• Do not use damaged or deformed fittings; inspect bevels for cracks before welding
• Use welding consumables matched to the fitting material
• Install supports near fittings to avoid stress concentration
• For high-pressure applications, use fittings with verified material certificates

• Standard export packing: wooden case or plywood pallet with moisture-proof wrapping
• Dispatch within 3–7 working days for stock items; 15–30 days for customized orders
• Shipping methods: sea freight, air freight, or express courier depending on quantity and destination
• Tracking number provided upon dispatch

• T/T (bank transfer): 30% deposit, 70% balance before shipment
• L/C at sight accepted for larger orders
• PayPal / Western Union for sample orders
• All prices are quoted EXW or FOB unless otherwise specified

• Each fitting is wrapped in plastic film or bubble bag
• Multiple pieces are packed in sturdy wooden cases or plywood pallets
• Desiccant is added for sea shipments to prevent moisture
• Beveled ends are protected with covers to prevent damage
• Custom labeling and marking available upon request

• 7-day return or exchange for quality defects (buyer bears return freight unless the defect is verified as our responsibility)
• Custom-made or non-stock items are not eligible for return unless defective
• Warranty period: 12 months from delivery for manufacturing defects
• Claims for shortage or damage must be reported within 3 working days of receipt with photo evidence
• Technical support available for welding procedures, material selection, and installation guidance