Detailed Product Description

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wrought iron staircase ,staircase ,ironse ,iron staircas

Iron products have strict manufacture processes in designs, material selection and manufacture craft

Design: in charge of our full-experiment designer­-Lion Ren, who has been in this field for 15years and held the position of design director of a Hong Kong company

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Material selection: we select high grade fine steel (P less than 0. than 0. than 0.035 percent,S less than 0.030&amp.030  percent)cold drawn steel which is in line with ISO9001 inter01 international standard. Each steel material is stri is strict selected with the surface neat and smooth, the sh, the separation angle shoulde shoulde should be no less than 45 degree5 degrees betwees between cross rib and steeand steeand steel bar sul bar sul bar surface, the surfthe surface should nshould not crack at the bend parts after bent 180 degrees flerees flexural centre diameter, and steel bar surface should not crack , scar over or collapse.

Forging Technology: to force pressure on the planchet by the metal forming machinery (air forging hammer and mechanical prescal press ) so as to maks to maks to maks to make it plastic deformation to achieve the certain forgeable pieces in different shape or size. Processes as below:

Forging stock blanock blanking, forging stock heating, roll fo roll forgill forging for ing for blank, stamp forging to certain shape, trimming cut,ing cut, intermediatermediatermediate inspection, inspection of the size and surface surface blemish of the forging pieces. Forging heat-treatment to remove forging stress and improve metal machinabilitinability ;  sweeping is used to wipe surface oxidation; the exterior appearance and hardness should be culd be checked commonly

Welding Technology: our lofting masting master draster draw thedraw thedraw the same picture as the design in 1:1 proportion with the product. roduct. Our past master jointing worker then er then weld th weld th weld the iron products already blready beready beready beready bent ty bent to shape allhape all together. The product should be level, strail, straight, smooth, smooth, and the and the arch shoarch should be smootbe smooth, and wi, and without twist, and the flower mould should be smooth with the ith the jointing has to be artistic and firm. The weldThe ldThe welding lineing line mustine must be neat and firm. Flower mould must be in proportion with the same model number should be the same and coincide completely.pletely. Any workpiece cupiece cut by plasma cutting or ning or not easy to polish must be polished before gang welding. Accessory pieces mustces must be forged or polished before bent in shapein shapein shapein shapein shape, then welded with main iron art structure. Any burrAny burr occurred after forged muorged must be polished before bending.bending. The grad distance must be less than 110mm by any gate, railing, staircase, hanase, handrail or iron or iron window without any declare of special demands as per safety standards. Sample platple plate must be made to be confirmed before large batch production. The size and jointing technology of iron art products should be tested by quality inspectornspector. Manufacture size and the and the size required by design are allowed to make a deviation of 1:1000 according to different products.

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Hotp>Hot galvanize technology: every piece can be weldebe welded all tod all tod all tod all tod all together should be welded before hot gae hot galvanize andnize andnize and it is not allowed to weld after hot galvanize without any special situation. For hot galvanize products, weects, weep hole should be opened from the private position of the tube to ensure air flow smooth for molten Zinc and acid wash. To prevent the sealing of the gate go out of shape, the sealing must be welded after hot galvanize. All products should open up an angle, the two angles welded together in stead n stead of welding directly. The thickness of cold galvanizing layer is 5-15um, can keep the product out of rust for more than 2 years. But hot galvanize technolotechnology, nology, the best of best of aest of all in this field, iron d, iron art decoration products are put into about 455 degrees Zinc bath with Zinc rare earth alloy and billet aluminum, is used by our Shou Jee iron art decoration corporation. The thickness of the hot galvanize layer is above 65μm, even come up to 100μm. The advantages of hot galvanize lvanize is that it has good covering power, dense galvanize layer and wer and without any organic matter. The weather-resistant mechanism of Zinc includes mechanical protection and electrochemical protection: the surface of hot galvanize layer has ZnO, Zn(OH)2 , ZnCO3-2Zn(OH)2-H2O in atmospheric corrosion condition, which slow down the rusty of Zinc to a certain extent. This protective layer called white rust can form a new layer while destroyed.  Weather-resistant power to base metallic iron of hot galvanize technology is much better than that of cold galvanizing, and hot galvanizing can keep the products out of rust over 50 years.

Painting technology: gloss of the painting divided into: light, matte, semi-matte, light divided into: touches, semiflat, dead luster. The brighter the paintings are, the more ageing-resistant they are. The drying functions are divided into surface drying and hard drying with suitable moisture of 65 percent. Each kind of painting makes different drying time, to ensure the strength of adhesive force and to make it look the same as new, we control the drying time of following:

Nitryl lacquer basic painting surface drying time is 0.2 hour, hard dry time is 1 hour

Bi-component epoxy primer painting surface drying time is 0.5 hour, hard dry time is 24 hours

Bi-component epoxy zinc rich primer painting surface drying time is 0.5 hour, hard dry time is 8 to 10 hours

Acrylic dilute acid air dry painting surface drying time is 0.5 hour, hard dry time is 4 hours

Bi-component acrylic finish coat surface drying time is 0.5 hour, hard dry time is 8hours

Alcohol acid gulf red finish coat surface drying time is 2 hour, hard dry time is 24 hours

Red lead gulf red finish coat surface drying time is 4 hour, hard dry time is 24 hours