API 6A Forged Casing Tubing Head for Oil Gas Well

This casing and tubing head assembly is API 6A certified wellhead equipment used for onshore and offshore oil & gas production wells. It integrates casing head and tubing head as an integral or split unit, responsible for suspending casing strings and tubing strings, sealing the annulus between pipes, and providing side outlets for pressure monitoring, bleeding and fluid circulation. The main body is forged from high-strength alloy steel, processed via quenching & tempering heat treatment to achieve balanced strength and toughness, applicable to crude oil, natural gas and sour service wells with hydrogen sulfide.

• High Strength Forged Body
  Integral forging eliminates internal casting defects; quenched and tempered to obtain high tensile strength and impact toughness, resistant to high pressure and wellhead alternating load deformation.
• Dual Anti-Corrosion Solution
  Main body can be nitrided on surface; sour service models meet NACE anti-H2S requirements, avoiding sulfide stress cracking in gas wells.
• Reliable Metal Sealing System
  Adopts metal hard sealing for long-term high-pressure sealing performance, no leakage under high temperature and pressure fluctuation, suitable for harsh oilfield working conditions.
• Flexible Structural Selection
  Two optional structures: integral type for compact installation; split type convenient for casing running and maintenance. Support single-layer and double-layer casing string matching.
• Complete Functional Side Outlets
  Equipped with standard side outlets for pressure monitoring, well fluid bleeding and circulation; matched manual gate valves with handwheels for easy on-site operation.
• Wide Application Compatibility
  Customizable for conventional oil wells, gas wells and ESP wells with cable penetrating tubing head structure available. Fit both onshore land wells and offshore platform wellheads.
• Strict Quality Control
  All forgings undergo full non-destructive testing; raw material chemical composition and mechanical property test reports are provided for each batch, meeting API PSL1~PSL4 product specification levels.
• Easy Installation & Maintenance
  Modular assembly design, standardized flange connection size, convenient disassembly for regular inspection, replacement of hangers and sealing parts without cutting the main body.