Joint Models of American Seamless Hydraulic Piping

The seamless steel pipe is widely used in industrial production, and their performance and quality are crucial to the operation of related equipment. Seamless hydraulic tubes are an indispensable part of hydraulic systems, and hydraulic tube joints are one of the key components to ensure the normal operation of hydraulic systems. The following is a detailed introduction to several common joint models of American seamless hydraulic tubes.

Joint models of American seamless hydraulic piping

1. JIC type joint

JIC type joints refer to joints that meet the J514 standard of the American Society of Mechanical Engineers (SAE). The full name is Joint Industry Conference, which is the Joint Industry Conference. This hydraulic tube joint has an inner cone and an outer cone, and is connected by an external thread. It is a widely used hydraulic tube joint used in high-pressure hydraulic tubeline systems.

JIC type joints use a 24-degree conical surface connection with a sealing ring, which has reliable sealing performance and high pressure bearing capacity. In hydraulic systems made of mild steel tube, it can well ensure the sealing and stability of the system and prevent hydraulic oil leakage. Commonly used JIC models include JIC37 degrees, JIC45 degrees and JIC90 degrees.

2. ORFS type joint

The full name of ORFS type joint is O-Ring Face Seal. It uses a flat connection with an O-ring. It is a joint with good sealing performance, can withstand heavy loads and impact loads, and has anti-loosening elasticity.

The working pressure of this type of hydraulic tube joint can reach more than 3000psi, and it is mainly used in high-pressure hydraulic systems and hydraulic transmission systems. Common ORFS models include ORFS90 degrees, ORFS45 degrees and ORFS plate shapes.

3. NPT type joint

NPT type joint refers to a joint that meets the American National Pipe Thread (NPT) standard. The full name is National Pipe Thread. Its thread size is inches. It is a commonly used tapered pipe thread in the United States. Its characteristics are that the angle of the tapered thread is 60 degrees and the pitch is different. Therefore, it is also used in some ordinary pup joint or drill pipe systems with low pressure requirements. NPT type joints also have certain applications.

NPT hydraulic tube joints are usually used in low-pressure hydraulic systems, pneumatic systems, vacuum systems and some occasions where pipe fittings do not need to withstand high pressure. They are suitable for connecting pipes for the transmission of liquids, gases, steam and other media. Commonly used NPT models include 1/8NPT, 1/4NPT, 3/8NPT and 1/2NPT.

4. SAE type joint

SAE type joints refer to fittings that meet the standards of the American Society of Mechanical Engineers (SAE), and the full name is Society of Automotive Engineers. They are mainly divided into two categories: cone flange type and straight thread O-ring type. Through the inner and outer matching end faces of 45° inverted cones, the cone metal is pressed and sealed against the metal.

This type of hydraulic tube joint has the characteristics of high strength, high wear resistance and high corrosion resistance, and can withstand pressures up to 5000psi. It is suitable for high-pressure hydraulic systems and hydraulic transmission systems. Commonly used SAE models include SAE37 degrees and SAE45 degrees.

Specifications of hydraulic tube straight joints

The following lists the specifications of common hydraulic tube straight joints:

1. JIC type hydraulic tube straight joint

JIC type hydraulic tube straight joint is one of the conventional hydraulic joints. It uses a 37-degree cone seal and is available in a large number of sizes.

2. ORFS type hydraulic tube straight joint

ORFS type straight joint uses a flat flange surface plus an O-ring seal. When installed, the O-ring is pressed into the groove, and the two flange end faces are butted and locked with nuts to achieve a composite seal between the metal surface and the O-ring.

3. NPT hydraulic tube straight joint

NPT hydraulic tube straight joint is a kind of American national pipe thread standard, commonly used in low-pressure hydraulic systems, and its sealing ring adopts a thread root reinforced structure.

4. SAE type hydraulic tube straight joint

SAE type hydraulic tube straight joint adopts 45 degree cone seal, which is similar to JIC type, but with different specifications.

Conclusion

Common American hydraulic tube fittings include JIC, ORFS, NPT and SAE. Hydraulic tube fittings are indispensable hydraulic tube fittings in hydraulic systems. Correctly selecting the appropriate model and size is crucial to the safe and reliable operation of hydraulic systems.

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