ASME B16.11 Forged Pipe Fittings Carbon Steel Stainless Steel Threaded Socket

Product Specification

1. Product Description
Forged pipe fittings are manufactured from solid steel bar or billet through a forging process, then machined to final dimensions. Unlike wrought or butt-weld fittings, forged fittings are designed for small-bore, high-pressure piping systems and are available with socket weld (SW) or threaded (NPT/BSP) connections. Common types include elbows (45°/90°), tees (equal/reducing), couplings (full/half), unions, caps, plugs, bushings, and crosses. Manufactured to ASME B16.11, they provide superior strength and leak-proof performance in demanding applications.

2. Key Specifications

• Standard: ASME B16.11, MSS SP-79/83/95/97, BS 3799

• Size Range: 1/8” – 4” (DN6 – DN100)

• Pressure Class: 2000 lbs, 3000 lbs, 6000 lbs, 9000 lbs

• Connection Type: Socket Weld (SW) / Threaded (NPT, BSP)

• Material Options:

  • Carbon Steel: ASTM A105, A350 LF2

  • Stainless Steel: ASTM A182 F304/304L, F316/316L, F321

  • Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91

  • Duplex/Super Duplex: ASTM A182 F51, F53, F55

• Surface Treatment: Anti-rust oil, zinc coating (for carbon steel), pickled/passivated (for stainless)

• Manufacturing Process: Forged from solid bar, then machined

3. Applications
Forged fittings are widely used in small-bore, high-pressure piping systems across oil and gas, petrochemical refineries, power generation plants, shipbuilding, chemical and fertilizer plants, and high-pressure utility systems. They are the standard choice for pipe sizes NPS 2 and below where socket weld or threaded connections are required.

4. Product Advantages

• Forged construction provides higher strength and density compared to cast fittings

• Suitable for high-pressure applications up to Class 9000

• Compact design ideal for confined spaces and small-bore piping

• Socket weld and threaded options allow flexibility in installation

• Available in a wide range of materials for corrosive and high-temperature service

• Dimensional consistency per ASME B16.11 ensures interchangeability

5. Product Functions
Forged fittings serve to change flow direction (elbows), branch or combine flow (tees/crosses), connect pipe sections (couplings/unions), terminate lines (caps/plugs), or reduce pipe size (bushings/reducing fittings). Socket weld fittings provide a strong fillet-welded joint, while threaded fittings allow for disassembly and maintenance without hot work.

6. Instruction for Use

• Verify fitting type, size, pressure class, and material match the piping specification.

• For socket weld fittings: insert pipe into socket, pull back approximately 1/16” (1.6 mm) to allow for thermal expansion, then apply fillet weld around the circumference.

• For threaded fittings: apply PTFE tape or thread sealant to male threads, tighten to achieve a leak-tight seal. Do not over-torque.

• Clean all surfaces before installation; remove oil, rust, and debris.

• Inspect threads and socket bores for damage before assembly.

• Perform pressure testing after installation as required.

7. Precautions

• Do not subject forged fittings to impact or drop during storage and handling.

• Keep stainless steel fittings away from contact with carbon steel to prevent galvanic corrosion.

• Ensure the piping system is depressurized and drained before installation or maintenance.

• Use appropriate welding procedures and filler materials matched to the fitting grade.

• Do not use damaged or deformed fittings; inspect threads and sockets for cracks.

• For threaded fittings in vibration-prone services, consider additional locking measures.

• Verify material certificates (MTC) include heat number, chemical analysis, and mechanical properties.

8. Shipping Information

• Standard export packing: wooden cases or pallets with moisture-proof wrapping.

• Dispatch within 7–30 days depending on order quantity and stock availability.

• Shipping methods: sea freight, air freight, or express courier based on quantity and destination.

• Tracking number provided upon dispatch.

9. Payment Terms

• 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 quoted EXW or FOB unless otherwise specified.

10. Packaging

• Each fitting is wrapped in plastic film or bubble bag.

• Threaded ends and socket bores are protected with plastic caps to prevent damage.

• Multiple pieces packed in sturdy wooden cases or pallets.

• Desiccant added for sea shipments to prevent moisture.

• Custom labeling and marking available upon request.

• Products marked with grade, lot number, size, and manufacturer trademark.

11. Return & After-Sales Policy

• 7-day return or exchange for quality defects (buyer bears return freight unless 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 material selection, welding procedures, and installation guidance.