13 5/8" 3K API 6A Drilling Spool Casing Head Spool For Well Drilling

Product Overview

The 13 5/8" 3K API 6A Drilling Spool Casing Head Spool is designed for reliable performance in well drilling operations. Manufactured from high-strength alloy steel in accordance with API 6A standards, it provides excellent pressure resistance up to 3,000 PSI and superior durability in demanding drilling conditions. This casing head spool ensures secure connections within wellhead assemblies, enabling efficient fluid handling, precise well control, and safe drilling operations. Its corrosion-resistant construction makes it suitable for both onshore and offshore applications, offering long-term reliability and operational safety.

Technical Features

1. Pressure Rating: 2,000 – 20,000 PSI
2. Size Range: 2" to 4" (custom sizes available)
3. Material Class: AA – HH, forged high-strength alloy steel
4. Temperature Rating: –46°C to +121°C
5. Connection Type: Hammer union / flange / threaded / welded ends
6. Sealing Type: NBR, HNBR, or FKM seals for H₂S & CO₂ environments
7. Rotation Capability: Full 360° rotation, minimizing mechanical stress
8. Surface Treatment: Anti-corrosion coating for extended service life

Advantages

Allows smooth rotation to prevent pipeline twisting

High sealing reliability under fluctuating pressure

Compatible with standard API hammer unions and adapters

Compact, durable design suitable for onshore and offshore use

Easy assembly, inspection, and maintenance

Applications

1. Oilfield drilling and workover operations
2. Wellhead and choke manifold flowline systems
3. Fracturing, cementing, and acidizing units
4. High-pressure transfer lines for mud, gas, or cement
5. Testing and production facilities requiring flexible pipeline connections

Product Photos