Spiral Weld Pipe Demand in Saudi Arabia

In recent years, many social and economic infrastructure projects executed in Saudi Arabia. The Kingdom's government has allocated huge amounts inventment for industrial projects such as water, transportation and manufacturing due to the increasing demand for water. The developing of water desalination industry has contributed to a significant rise in demand for spiral welded pieps in the Kingdom. The spiral welded pipe industry is withnessing tremendous growth in production, as various players expanded their production capacities to meet the soring spiral pipe demand. According to the analysis, the deman of spiral welded pipes is expected to grow at a CAGR of more than 4% during 2015-2020. Also, the main factors that leading to increase in the demand and consumption for spiral welded pipes includes increasing government spending in water projects, increasing inventments in new filed exploration for oil and gas, and increasing construction & infrastructure projects etc. 

Right Way to Save Spiral Pipe

Proper way to preserve spiral pipe

1) Storage space spiral steel pipe products or warehouse, should be selected in clean, smooth

drainage area, away from harmful gases or dust in factories and mines. The presence on the ground to clear the weeds and all the debris, keeping a clean steel

2) In a warehouse not with acid, alkali, salt, cement, steel and other aggressive materials stacked together. Different varieties of steel should be stacked separately, to prevent confusion, to prevent contact corrosion

3) Large steel, rail, steel disgrace, large diameter steel pipe, forgings, etc., may open dumps

4) Small and medium steel, wire rod, rebar, medium diameter steel pipe, steel wire and wire rope, etc., can be expected in a well-ventilated storage shed, but it must be the underlying thatch

5) Some small steel, sheet, strip, silicon, or thin-walled small-diameter steel pipes, all kinds of cold-rolled, cold-drawn steel products and high prices, corrosive metal products, can be stored for storage

6) A warehouse should be based on selected geographical conditions, the general ordinary enclosed warehouse, that is the roof with walls, doors and windows tight, with the Treasury ventilation device

7) Requires the Treasury sunny attention to ventilation, rain close attention to moisture, keep the appropriate storage environment

Welding Tips of Spiral Pipe

Such as spiral steel pipe weld gap is too large, the effect of cuts constituting nearby, eddy current lack of heat, weld crystal adverse indirect co-occurrence of cracks or lack of fusion; if the gap is too small, the effect is increased near constitute, excessive heat welding to form weld seam burning; perhaps weld by kneading, rolling after composing pit, affecting the quality of the weld surface of the tube is heated to a marginal two welding temperature, under kneading roll kneading, together constitute the metal grain mutual penetration, crystallization, ending spiral steel pipe welds constitute strong kneading force is too small if, together constitute the number of crystals is small, the weld metal strength decreases, cracking may occur after the force; If kneading excessive force will make the molten metal is extruded weld situation, not only reduces the weld strength, and the list will be a lot of glitches, and even take the welding seam constitute disadvantages.

Quality Inspection of Spiral Pipe

Spiral pipe factory should be done before the mechanical performance test and flattening test, and flaring test, and to achieve the standard requirements. Straight seam steel quality inspection method is as follows:

1, From the face of it, that is visual inspection. Visual inspection of welded joints is a simple procedure but widely used test method is an important part of product testing, the main defects and deviations are found on the surface of the weld size. Usually by the naked eye, with the standard model, gauge and test tools such as a magnifying glass. If the weld surface defects, weld defects there may be internal.

2, Physical test methods: physical test method is to use some physical phenomena assay or test method. Or within the workpiece material defect inspection, and are generally used NDT methods. NDT ultrasonic flaw detection, radiation detection, penetration testing, magnetic testing and so on.

3, Pressure vessels strength test: pressure vessels, in addition to tightness test, but also the strength test. There are common test of two hydraulic test and air pressure. They can be tested in working under pressure vessels and piping welds compactness. Hydrostatic pressure test is more sensitive than the test speed and, at the same time after the test products do not waste water treatment, drainage problems for the product is particularly applicable. But the risk is greater than the test pressure test. When tested, it must comply with the appropriate safety measures to prevent accidents during the test.

4, Compact test: liquid or gas storage vessel welding, which is not dense weld defects, such as penetrating cracks, pores, slag, incomplete penetration loose tissue and the like, can be used to find the density test. Compactness test methods are: kerosene test, carrying water testing, water will test etc.

5, Hydrostatic test: each pipe hydrostatic test should be done without leakage test pressure press Calculate P = 2ST / D where S- hydrostatic test stress test Mpa, hydrostatic test stress testing in accordance with corresponding steel standard specifies the minimum degree of yield (Q235 is 235Mpa) 60% of the selection.