When using the steel strand tensile tester to test the required mechanical indexes of the steel strand, the tester should have a good understanding of the method of making the strand. The manufacturing method of the steel strand is briefly described below.
The manufacturing process of steel strands is divided into monofilament manufacturing and stranding. When making monofilaments, (cold) drawing technology can be used. According to different materials, high carbon steel wire rods, stainless steel wire rods or medium and low carbon steel wire rods can be used. If galvanizing is required, plating or hot-plating should be performed on the monofilament. In the manufacturing process of the stranded wire, a plurality of steel wires are twisted into a product by a stranding machine, and the prestressed steel stranded wire needs to be continuously stabilized after forming, and the final product is generally received on a spool or completed without a shaft.
Understanding the production process of steel strands is useful for more efficient use of strand tensile testing opportunities.
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Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition fromFlange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These Welding Neck Flange are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easilyradiographedfor flaw detection.
This Welding Neck Flange will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
Welding Neck Flange
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Shijiazhuang Huize Pipe Fitting Co., Ltd. , http://www.huizegd.com