• Steel Flanges

    A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system, provides easy access for cleaning, inspection or modification. read more

  • Pipe Fittings

    The ends of all buttweld fittings are bevelled.The shape of the bevel depending upon the actual wall thickness.This bevelled ends are needed to be able to make a "Butt weld". read more

  • Steel Pipes

    Pipe is a hollow tube with round cross section for the conveyance of products. The products include fluids, gas, pellets, powders and more. read more

Flange joint with bolts and nuts

Flange joint with bolts and nuts

Flange joint consist of a couple of flanges,one gasket and several bolts & nuts.
First put gasket between two flanges’ mating sealing surfaces, after tighten the nuts connected to bolts, gasket surface will deform when the pressure increase to a certain value, so it can fill the gap between two flanges’ mating surfaces, prevent leakage from the flange joint.
Flange joint is detachble joint, it’s used for pipes connection. The flange types contains: intergral flange, lap joint flange, plate flange, slip on flange , weld neck flange , threaded flange.
Plate flange has weak rigidness, usally used in pressure less than 4Mpa occasion.
Weld neck flange (also called butt weld flange),have good rigidness, usally used in high pressure & temperature occasion.
The sealing suface types contains: 
plate face : used in low pressure , non-toxic mediu pipeline.
Steel plate flange plate face

Steel plate flange plate face


raised face: used in high pressure occasion.
Steel plate flange with raise face

Steel plate flange with raise face


tongue-groove face: used in flammable , explosive , toxic media pipeline.
Steel flange with tongue and groove face

Steel flange with tongue and groove face


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