Low Medium High Pressure Hammer Union API 6A Forged Steel Pipe Connectors For Oil & Gas Drilling
A Hammer Union is a high-pressure pipe fitting widely used in the oil and gas industry for quick and reliable connection and sealing of pipelines and equipment. Consisting of two joints coupled with a threaded nut, hammer unions allow fast make-up and break-out using a hammer, enabling efficient assembly and disassembly without rotating the pipes.
Our hammer unions are manufactured from high-strength forged alloy steel and undergo strict heat treatment to ensure uniform metallurgical structure and pressure-bearing capacity. All products comply with API Spec 6A, ASTM, and AISI standards, ensuring reliable sealing, fast loading/unloading, and excellent interchangeability with major international brands, such as FMC WECO.
Key product features:
Forged steel construction for superior strength and durability;
Precision-machined sealing surfaces for leak-proof performance;
Color-coded components for quick identification;
Interchangeable with major manufacturers’ products;
Available in threaded, butt-weld, and socket-weld end connections;
Sour service models available per NACE MR-01-75 standards.
Models & Pressure Ratings
Our hammer union product line covers a comprehensive range of Figure numbers to meet diverse operational requirements, from low-pressure manifold connections to ultra-high-pressure fracturing and well service applications:
|
Figure No. |
Working Pressure (PSI) |
Test Pressure (PSI) |
Typical Application |
|
Fig 50 |
500 |
750 |
Low-pressure suction and discharge lines- |
|
Fig 100 |
1,000 |
1,500 |
Manifold and line connections |
|
Fig 200 |
2,000 |
3,000 |
General service manifolds and lines |
|
Fig 206 |
2,000 |
3,000 |
Manifold line connections with O-ring seal |
|
Fig 207 |
2,000 |
3,000 |
Sealing manifold connections, cap with O-ring |
|
Fig 400 |
4,000 |
6,000 |
Manifold line, pump suction, and mud services |
|
Fig 602 |
6,000 |
9,000 |
Manifold line connections and mud service |
|
Fig 1002 |
10,000 |
15,000 |
Cementing, fracturing, acidizing, choke & kill lines |
|
Fig 1003 |
10,000 |
15,000 |
High-pressure cementing and fracturing |
|
Fig 1502 |
15,000 |
22,500 |
Cementing, fracturing, BOPs, choke & kill manifolds- |
|
Fig 2002 |
20,000 |
30,000 |
Ultra-high pressure well service- |
Note: Sour gas service ratings may differ from standard service ratings. Please consult our team for details.
Specifications & Dimensions
Our hammer unions are available in a wide range of nominal pipe sizes to suit various pipeline and equipment connections:
|
Nominal Pipe Size (inch) |
Nominal Pipe Size (mm) |
|
1″ |
25 |
|
1-1/4″ |
32 |
|
1-1/2″ |
38 |
|
2″ |
50 |
|
2-1/2″ |
65 |
|
3″ |
80 |
|
4″ |
100 |
|
5″ |
125 |
|
6″ |
150 |
|
8″ |
200 |
|
10″ |
250 |
|
12″ |
300 |
End connection types available:
Threaded connections (pipeline thread / tubing thread)
Butt-weld ends
Socket-weld ends
Non-pressure sealing ends
Component parts:
Nut (color-coded for pressure rating identification)-
Male sub (with precision-machined sealing surface)
Female sub
Seal ring (available in NBR, Viton®, PTFE, etc.)-
Custom sizes and special materials available upon request.
Applications
Hammer unions are essential components in high-pressure fluid handling systems across the oil and gas industry. Common applications include:
Drilling operations – standpipe, mud pump discharge, rotary hose connections
Cementing – cementing trucks, service trucks, well cementing lines
Fracturing (fracking) – hydraulic fracturing lines, fracturing fluid delivery
Acidizing – acid treatment lines
Choke & kill manifolds – well control systems
Well testing – test lines and wellhead connections
Manifold systems – various types of high-pressure manifolds-
Mud delivery – drilling mud circulation systems-
Coiled tubing operations – high-pressure fluid connections
Offshore platforms – marine and subsea applications-
Media handled:
Drilling mud (water-based, oil-based, synthetic)
Crude oil
Fracturing fluids (including proppant-laden fluids)
Cement slurry
Acid solutions
Natural gas
Water (fresh, seawater, produced water)
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.