Fittings for steel pipes - an important element of the pipeline construction

Types of fittings

Fittings come in different types, depending on where they should be used:

• bends, angles.These products need to change the direction of flow at 45-120 degrees;
• cross.Required for the branch in one direction by two;
• tees, manifolds and elbows.Create one branch of the total pipeline;
• adapter.Designed to connect different systems by different methods.Another such product is called sleeves, Fittings, "American", and nipple;
• clutch.The junction of the same pipe in the straight section;
• fitting.Typically, it is used to connect the system to a flexible hose;
• cork, cap, caps.These products are used for sealing the ends of the elements of the system.

Most fittings are made of ferrous metals, for example, their ductile iron or steel.If the product is used for the manufacture of non-ferrous metal, it is typically copper or brass.Plastic fittings must only be used for pipes of plastic.Those referred to as straight fittings that connect the ends of which have the same diameter, but if the fastening ends have different diameters - transition.

Classification

connection products for metal pipes are divided into:

• welded;
• threaded;
• flange;
• crimping.

threaded fittings are manufactured with cylindrical thread, and they are intended for gas and water systems.To compound turned tight, use a strand of flax soaked in iron oxide, FUM tape or a special sealing thread.Fasteners for water or gas pipelines made from steel and cast iron.

Important!The inner and outer fitting surfaces should be smooth.

At the edge of the cast iron parts is made special with a side bulge, which provides additional strength to the fitting.As a rule, the elements for connecting pipes are manufactured with a diameter of orifice (8-100 mm).Such products are used for piping systems in which the working fluid temperature is less than 175 degrees Celsius, and pressure less than 1.6 MPa.

Description crimp connection elements

Fittings made of galvanized steel are universal.The pipes made of stainless steel couplings used to connect parts with smooth ends.It is possible misalignment connection parts 3 degrees in any direction.The connecting elements can be used repeatedly, if timely change pads.

crimp fittings for steel tubes connect them without the use of threading and welding.Such products are produced with one or two sealing rings, which may be made of different materials.Crimp parts provide reliable sealing of the gas medium and the girth of the pipe, they are easy to install and can be used repeatedly, as they have high levels of resistance to vibration fatigue and connection elements of the system.

Fasteners with two O-rings, are widely used for piping apparatus equipment in the compressor and-tube devices, metrology, as well as in all high pressure systems.

Important!Fittings can be calibrated for use with a small diameter tube of stainless steel.