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API 6A Type 6B Flange

API 6A Type 6B Flange is an essential high‑pressure connection component for wellhead and manifold systems, designed for secure equipment coupling and reliable pressure containment, fully compliant with API 6A and NACE MR0175 standards. Unlike premium 6BX flanges with integral metal‑to‑metal sealing, this conventional flange adopts a ring‑type gasket sealing structure and offers a cost‑effective connection solution, capable of withstanding working pressure up to 10,000 psi. Its standardized dimensions and simple installation procedure remove complex pre‑assembly requirements, lower on‑site operation risks, and fit a wide range of conventional onshore wellhead setups, while high‑spec 6BX flanges bring unnecessary cost burdens for regular medium‑pressure service conditions.

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Jiangsu Hongtai Petrochemical Machinery Co., Ltd. is located in Funing Economic Development Zone beside the Yellow Sea. Founded in 2006, it has grown into a nationally recognized high-tech enterprise specializing in R&D, manufacturing and technical services of petroleum machinery.

Covering nearly 100,000 square meters with over 200 professional staff, the firm is equipped with more than 300 core production machines and 1,000 testing instruments. It annually produces 3,000 sets of high-pressure wellhead assemblies with an annual output value exceeding RMB 300 million.

Boasting a provincial R&D team and long-term university-industry cooperation, the company owns over 100 national patents. Its CNAS & CAL-certified lab and imported facilities guarantee reliable product performance. It holds API 6A, API 16C, API 5CT, API Q1, ISO 9001 and special equipment manufacturing licenses, and participates in drafting national industrial standards. Over 20% of staff hold intermediate or higher technical titles. Upholding integrity, innovation and professionalism, we deliver full-lifecycle solutions and seek win-win partnerships worldwide.

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