Dulluz International.USA

12/31/2023

02/03/2022

5D PIPE BEND

Pipe bends are used in many industries, including chemical, oil and gas, electric, metallurgy and shipbuilding. Pipe bends function as structural passageways to facilitate the transfer of substances, such as water and fuel. Some have a short radius while others have a long radius. Long radius bends give less frictional resistance and allow for less pressure drop when compared to short radius bends. When selecting the type of pipe bend, it’s important to choose one that is compatible to the application.

Although the words bends and elbows are often used as synonyms, there are some differences. Bend is a term for any offset of direction in the piping while elbow is an engineering term. Elbows have limitations to angle, bend radius and size. Most angles are either 45 degrees or 90 degrees. All other offsets are specifically pipe bends. And while elbows have sharp corners, bends never do. The most basic different between a bend and an elbow is the radius of curvature. Bends have a radius more than twice the diameter, and elbows have a radius of curvature between one and two times the size of the pipe’s diameter. All elbows are bends, but not all bends are elbows

01/15/2022

INTEGRAL PUP JOINT

Integral Pup Joints are straight tubes with union connections on both ends, widely used for transporting high pressure flow in fracturing manifold, cementing manifold, maintenance manifold and test manifold. ... Integral Pup Joints special for sour service are also developed in accordance to NACE MR0175.

Integrally forged hammer lug union end connections eliminate welding or threading

Lightest Pup Joint available for fast, easy handling

Available in butt weld, integral, threaded (LPT & NPST)

Sizes from 2” to 4”. Integral Pup Joint available in lengths up to 12 feet while threaded / butt weld is available up to 20 feet

Available in 6,000 to 20,000 PSI pressure rating

All products manufactured from forged steel which meets ASTM
and/or AISI standards

Available in both standard and H2S service

01/15/2022

HAMMER UNION

Hammer Unions are designed as heavy duty, high pressure flow line connectors. They are commonly found in chemical plants, on marine dredging vessels, in strip mines and in the oil industry (depending on model, for sand slurry, oil, water, steam, etc).
Hammer unions are one of the most readily used connections in the oil and gas industry, suitable for pressures up to 20,000 psi, and all have full material traceability. ... All connections are clearly marked to show the nominal size, figure number, working pressure, and service.
Hammer union allow for quick connecting the pipelines and flexible hose assemblies in the oil and gas industry . They are popularly used on onshore and offshore drilling rigs to transfer petroleum, gas, drilling mud, cement, water, air and many other media.

01/09/2022

BRAIDED FLEXIBLE METAL HOSES

Heavy-duty, Stainless Steel Braided Hoses for natural gas, cooling water, & oxygen lance. Flexible Metal Hoses that conform to ASME standards. For high-pressure environment. Finished assemblies. Solutions to pipe motion. Braided and flexible. Included with fittings. Corrugated hoses can withstand high pressure and provide maximum leak tightness on account of their material.

01/09/2022

SUPER DUPLEX FITTINGS

Super duplex stainless steel especially designed for service in aggressive chloride-containing environments and has additions of W and Cu compared to UNS S32750. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength.
SAF 2507® (UNS S32750) is a super-duplex stainless steel; a high-alloy duplex steel with a PRE value of min. 42*. The grade is characterized by very good chloride corrosion resistance, combined with very high mechanical strength.

01/01/2022

POTENTIOMETER FOR CONTROL VALVE

A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider.[1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.

01/01/2022

DEGREASED COPPER PIPES / MEDICAL GAS COPPER PIPES

Which is eminently suitable for use on medical gas (including breathable air) and oxygen lines.
Degreased copper tubes are manufactured under strict quality control procedures .
• Batch numbering for traceability is included on all pipework.
• All copper tubes from sizes 12mm through to 108mm are engraved/permanently ink marked with the following information: EN 13348, nominal dimensions, manufacturer details, part no., CE Mark.

These tubes are designed for use in Medical Gas Pipeline System (MGPS) installations and incorporate the specialist requirements of the MGPS industry to include cleanliness.
Straight length copper tube is available in 3m & 6m lengths. Diameters range from 12mm to 219mm, for large hospital projects.

01/01/2022

STEEL GRATINGS
An open grid assembly of metal bars, in which the bearing bars, running in one direction, are spaced by rigid attachment to cross bars running perpendicular to them or by bent connecting bars extending between them.

Bearing Bars - Load carrying bars made from steel strip or slit sheet and extending in the direction of the grating span.

Cross Bar - The connecting bars, which extend across the bearing bars, usually perpendicular to them.

Finish (Surface Treatment)-The coating, usually paint or galvanized which is applied to the grating.

Cross Bar Centers - The distance center to center of the cross bars.

12/28/2021

DIELECTRIC UNIONS

Dielectric Unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. It is installed between pipes made from dissimilar metal. We offer dielectric unions in a range of configurations, sizes, and materials