API 16A Clamps & Hubs

Compact four-bolt clamp-and-hub joints for rapid assembly of wellhead and well-control components.

PRODUCT OVERVIEW

Purpose and technical function

Clamp connectors provide a smaller and lighter alternative to conventional flange joints. The hub profiles and clamp segments convert bolt preload into axial sealing force while allowing rotational orientation before make-up.

Technical features

Four-bolt clamp make-up
360-degree orientation before tightening
Compact and lighter connection
Hub profiles matched to size/rating
Suitable for multiple pressure-control assemblies

Typical applications

Wellheads and flowlines
BOP and drilling stacks
Choke and kill manifolds
High-pressure supply lines

TECHNICAL DATA

Selection and supply basis

Design basis	API Spec 16A connection system
Size/rating	Matched to approved API flange or hub interface
Components	Hub pair, clamp segments, bolting and seal ring
Service	Standard or sour service by material selection
Service basis	Standard or sour service, with metallurgy, hardness, seals and trim confirmed against the approved fluid composition
Inspection and testing	Material traceability, dimensional inspection, NDE and pressure/functional testing according to the approved ITP
Documentation	Datasheet, drawings, MTRs, NDE and pressure-test records as specified in the purchase order

Supply positioning

Energy Equipment International supplies this equipment against approved project requirements. Manufacturing, monogram and performance claims apply only when confirmed in the selected supplier’s approved documentation.