What Are the Main Considerations to Choose the Best Metric Compression Tube Fittings?

Metric compression tube fittings are used in a wide range of industries such as petrochemical, oil & gas, pharmaceutical, military, power generation, and more. These tube fittings provide a leak-free piping system while providing maximum ease and flexibility in installation, maintenance, and repairs. According to industry experts, you need to buy metric compression tube fittings of the highest quality for maximizing safety, control, and productivity.

Just like any other tube fittings, the metric compression tube fittings also have certain specifications. Here are some main considerations you need to focus on selecting right metric compression fittings for steel pipe.

Traceability

Traceability refers to the ability to trace the origins of the material. Effective product traceability is considered critically important to isolate contaminated, defective products reaching customers. The industrial equipment is required to go through processes of calibration of inspection, measuring, and test equipment to ensure the tube fittings meets the standards and requirements of the industrial processes.

Traceability in compression tube fittings means the engineer has complete information about the manufacturing processes of the tube fitting, raw materials used and different calibration and tests performed to ensure the tube fitting gives the desired output. Traceability information of tube fittings includes details like work details, inspection results, dimensions linked to the identification number of each process. According to industry experts, you should look for traceability information when you buy compression fittings for steel pipe as it contributes to increasing/enhancement of product/work efficiency and quality.

Standard Materials Used

The material is an important element to consider when choosing compression tube fittings for the specific industrial application. Majority of the tube fittings are available in raw brass and 316L stainless steel but tube fittings manufacturer can also provide products made of speciality alloy materials upon request. The right material for tube fitting depends upon demands of the application. For example, you need to buy metric compression tube fittings made of stainless steel for high purity applications or corrosive gases as stainless steel has exceptional durability, superior resistance, high-finish surface properties, and non-reactivity.

Stainless tube fittings are ideal for low-velocity oxygen and most gas type applications. Other reason stainless steel tube fittings are highly recommended in the industrial application because they have an outstanding strength to bear elevated temperatures, exceptional corrosion resistance to acetic, formic, sulphuric, hydrochloric, tartaric acids alkaline chlorides, and acid sulphates.

Brass tube fittings are ideal for high-velocity oxygen applications due to good strength, low-friction properties, and resistance. You need to ensure the material used in the construction of tube fittings is compatible with the gas type or fluids used in the process.

Thread and End connections

When you buy compression fittings for steel pipe, ensure you are choosing right thread threads for your application. This is because pressure ratings change with thread type (male or female), thread size. Male NPT end connections have a chamber at the inside diameter while the Female BSPT end connections have a small shoulder on the outside face.

Ferrules

The ferrule is an important fitting assembly in compression tube fitting. There are two types of ferrules which include back ferrule and front ferrule. They are made of a variety of materials such as stainless steel to graphite. Metal ferrules are widely used in industrial applications as they are stable at wide temperature range and also capable of bearing compressive loads without relaxing which is important for tight sealing in all circumstances. Ferules are specifically designed for achieving an optimal seal between the fitting body and tubing. Many compression tube fittings have either a single ferrule or a double ferrule.

The shape of the ferrule and the mating angle of the fitting body are two most important considerations that you need to focus on when buying compression tube fittings.

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