Iron & Steel

1. Reduced corrosion resistance due to damage or contamination. Corrosion may occur where the film has been damaged, and other forms of contamination are present that prevent the natural re-formation of the passivated film. All the beneficial properties of stainless steel can be destroyed during processing, such as heat treatment or machining, such as welding, cutting, sawing, drilling and bending. As a result of these treatments, the oxide protective film on the stainless steel surface is usually damaged or contaminated, making it impossible to achieve spontaneous and complete passivation. As a result, localized corrosion may occur, even under conditions where corrosion is relatively weak. When used, it can result in an unsatisfactory end product, or even worse, the failure of critical systems. A: Welding causes accelerated oxidation on the inside, outside and near the weld. Oxidation is visible because there are areas of discoloration, and the color is related to the thickness of the oxide layer. Compared with the oxide layer on the stainless steel before welding, the oxide layer in the discolored zone is relatively thick, and the composition changes (containing less chromium), which reduces the local corrosion resistance. For the inside of the tube, oxidation and discoloration can be minimized by using proper backwashing methods. After welding, post-welding treatments such as pickling and grinding are usually required to remove oxides (color) and restore corrosion resistance. Color charts are often used to determine whether a weld needs pickling based on color grade. However, this decision is subjective, and in principle each color indicates the presence of oxidation and the affected oxide layer, thus reducing corrosion resistance. B: Mechanical treatment usually uses mechanical or non-mechanical contaminated surfaces. Organic pollutants can be caused by lubricating oil. Contact with tools can lead to inorganic contaminants such as foreign iron particles. Plaque is often caused by surface contamination of all kinds. In addition, foreign iron particles may cause galvanic corrosion. Pitting and galvanic corrosion are local forms of corrosion that initially require water treatment. Therefore, surface contamination usually reduces the corrosion resistance of stainless steel. 2. Surface treatment. In order to prepare the surface, remove discoloration and restore corrosion resistance, there are many post-treatments and methods. Here again we should distinguish between chemical and mechanical methods. Chemical methods are: pickling (soaking, with pickling paste or pickling spray), auxiliary passivation (after pickling) and electrolytic polishing. Mechanical methods are: sandblasting, glass or ceramic pellet shot blasting, painting, polishing. While all methods produce welded joints, no mechanical post-treatment will provide corrosion properties suitable for harsh applications. Use chemical methods to remove oxides and other contaminants from surfaces, while using mechanical methods to potentially remove contaminants from previously removed, polished, or erased materials. All kinds of pollution, especially foreign iron particles, can be a source of corrosion, especially in humid environments. Therefore, mechanically cleaned surfaces are best cleaned regularly under dry conditions. After pickling, it is important to properly rinse with water to remove all contaminants and pickling residues. The final rinsing should be done with softened water to avoid calcium stains and contaminants embedded in the growing oxide layer, which is necessary to build the passivation layer. In addition, due to the use of chemical methods (pickling and electrolytic polishing) to improve corrosion resistance, iron dissolves faster in pickling solutions and electrolytes than other metals. According to this, the surface is enriched with chromium and becomes more durable. Therefore, chemical methods of pickling and electropolishing are the only post-treatment methods that can restore the corrosion resistance of stainless steel in the weld and other surface damage that occurs before welding. This is actually independent of the type of stainless steel, there is no difference between the effect of pickling by soaking in the tank and using pickling paste or spray.

Minimum Order: 1 bags

Galvanized flat steel is a kind of section steel. Section steel is one of the four major steel varieties (sheet, pipe, profile and wire). The section steel is divided into simple section steel and complex section steel (special-shaped steel) according to the section shape. The former refers to square steel, round steel, flat steel, Angle steel, hexagonal steel, etc., the latter refers to I-beam steel, channel steel, rail, window frame steel, curve steel and so on. What are the advantages of galvanized flat steel? Galvanized flat steel is rolled with negative deviation, but it is shipped according to the actual weight, and the utilization rate is 1 to 5 percentage points higher than the steel plate. Flat steel can be produced according to the user's needs for fixed thickness, fixed width and fixed length, which reduces the cutting for the user, saves the process, reduces the consumption of labor and materials, and also reduces the processing loss of raw materials, saving time, labor and materials. Products have been professionally used in steel structure manufacturing, machinery manufacturing, automobile industry, mining machinery, lifting machinery and other industrial materials. Technical standard for galvanized flat steel. Galvanized flat steel material standard: 1. Carbon structural steel GB700-88, high-quality carbon structural steel GB/T699-1999 3. Low alloy high strength structural steel GB/T1591-94. The development of galvanized flat steel market. Galvanized flat steel is a layer of zinc plated on the surface of the steel, which can play a very effective anti-corrosion effect on the metal. The production method of this kind of steel is not very complex, relatively simple, and its galvanizing method also inherits the traditional hot dip plating method. So far, the development scale of hot dip galvanizing industry has been getting larger and larger. The main use of galvanized flat steel. The main uses of galvanized flat steel: As a finished product, galvanized flat steel can be used to manufacture hoop iron, tools and mechanical parts, and can also be used in structural parts of buildings and escalators. Flat steel is rolled with negative deviation, but it is shipped according to the actual weight, and the utilization rate is 1 to 5 percentage points higher than the steel plate. What are the materials of galvanized flat steel? At present, the general material of galvanized flat steel on the market is Q235B, and there are also galvanized flat steel of Q355B, 16Mn and other materials. Galvanized flat steel is a kind of section steel. Section steel is one of the four major steel varieties (sheet, pipe, profile and wire). The section steel is divided into simple section steel and complex section steel (special-shaped steel) according to the section shape. The former refers to square steel, round steel, flat steel, Angle steel, hexagonal steel, etc., the latter refers to I-beam steel, channel steel, rail, window frame steel, curve steel and so on. What are the advantages of galvanized flat steel? Galvanized flat steel is rolled with negative deviation, but it is shipped according to the actual weight, and the utilization rate is 1 to 5 percentage points higher than the steel plate. Flat steel can be produced according to the user's needs for fixed thickness, fixed width and fixed length, which reduces the cutting for the user, saves the process, reduces the consumption of labor and materials, and also reduces the processing loss of raw materials, saving time, labor and materials. Products have been professionally used in steel structure manufacturing, machinery manufacturing, automobile industry, mining machinery, lifting machinery and other industrial materials. Technical standard for galvanized flat steel. Galvanized flat steel material standard: 1. Carbon structural steel GB700-88, high-quality carbon structural steel GB/T699-1999 3. Low alloy high strength structural steel GB/T1591-94. The development of galvanized flat steel market. Galvanized flat steel is a layer of zinc plated on the surface of the steel, which can play a very effective anti-corrosion effect on the metal. The production method of this kind of steel is not very complex, relatively simple, and its galvanizing method also inherits the traditional hot dip plating method. So far, the development scale of hot dip galvanizing industry has been getting larger and larger. The main use of galvanized flat steel. The main uses of galvanized flat steel: As a finished material, galvanized flat steel can be used to manufacture hoop iron, tools and mechanical parts, and can also be used for structural parts of buildings and escalators. Flat steel is rolled with negative deviation, but it is shipped according to the actual weight, and the utilization rate is 1 to 5 percentage points higher than the steel plate.

Minimum Order: 1 bags

Inconel 625 is also known as the UNS N06625, Nr.2.4856, N06625, NC22DNb Inconel 625 is a Ni-Cr base solid solution reinforced deformation superalloy with chromium, molybdenum and niobium as the main sosoloid strengthened elements. The maximum operating temperature is 950℃. The alloy has good tensile strength and fatigue resistance from low temperature to 980℃ and has good processing and welding technicality. The alloy has excellent corrosion resistance, oxidation resistance and stress corrosion resistance in salt spray atmosphere. Alloys have been used in the manufacture of aerospace engine casings, guide blades, mounting edges and barrels, fuel pipelines and etc components. The corrosion rate of the alloy is very low in both Marine and non-marine atmospheres and its corrosion resistance to seawater is very good. The alloy is resistant to the corrosion of various salting and has good resistance to the corrosion of nitric acid and phosphoric acid. It also has considerable resistance to the corrosion of hydrochloric acid and low concentration sulfuric acid when heated below boiling point. The aging hardening of the alloy after long-term use at 550℃~700℃ can lead to a decrease in the alloy plasticity . The main products are sheet, bar, pipe, wire, strip and forgings.

Binding Annealed Wire In 5kg Rolls Black annealed wires 1.5mm, 2.4mm, 3mm packed in 5 kg rolls are popularly used for binding uses. 5 kg roll black annealed wires are available in different gauges. PRODUCT DESCRIPTION: Details: Wire gauge: 1.5, 2.4 and 3 mm for 5 kg Rolls 5kg rolls binding annealed wire 2.4mm Binding Annealed Wire ø1,5 (B 5x5) Binding Annealed wire ø2.4 (B 5x5) Binding Annealed wire ø3 (B 5x5) Binding Annealed wire MOUSE - 200GX100 (SE 20) Packaging: 5 Kgs/Roll 5 Rolls/Bundle 1 Ton/Pallet

10 Gauge Black Annealed C-1018 Wire For Cotton Baling 10-GA Black Annealed C-1018 Wire is popularly used in cotton baling industry. 10 gauge black annealed baling wire is made of high magnese content carbon steel wire with high strength and flexiblity. We supply C-1018 grade annealed bale ties for cotton balers in Canada and many other countries. Baling Wire Gauge 10 ga. Finish Oiled, Diameter .135", Length 2053 ft. PRODUCT DESCRIPTION: 10-GA Black Annealed C-1018 Wire Material: 1018 black annealed wire (Chinese equivalent Q235) Decimal Size: .1350" Gauge: 10 Tensile Strength: 60,000 to 75,000 psi Breaking Range: 860 to 1075 lb Elongation: 20% min. Quality: The wire shall be of uniform chemical composition, of adequate soundness and free from surface defects such as laps, seams, fins, roughness, or other characteristics which may impair the use of rt for tying wire. It shall be free of kinks, waviness and splits. Surface Treatment: Light oil Packaging: Continuous wound coil uniformly laid on a tubular coil carrier. Identification: Each carrier shall be identified with the vendor tag. Each tag shall specify the decimal size, grade, purchase order number and net weight. The top of the uncompressed coil shall be at least 14" below the top of the coil carrier. The upper end of the wire shall be secured to the arbor of the coil carrier.

Product Description 0.1-300mm 430 Stainless Steel Flat Sheet Inox Hot Rolled Hot Rolled Stainless Steel plate Material:301/304/304L/316/316L/316Ti/ , 321/409/410/420/430etc Standard:ASTM,A240/A , 240M,ASME SA-240 Thickness:0.3mm-3mm Width:3mm , -2000mm or as required Surface:No.1,2B,BA,No.4,HL,Mirror or according to customer requirement 430 Grade Stainless Steel Sheet

Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking. 2507 Duplex is highly resistant to uniform corrosion by organic acids such as formic and acetic acid. It is alsohighly resistant to inorganic acids, especially if they contain chlorides. Alloy 2507 is highly resistant to carbide-related intergranular corrosion. Due to the ferritic portion of the duplex structure of the alloy it is very resistant to stress corrosion cracking in warm chloride containing environments. Through additions of chromium, molybdenum and nitrogen localized corrosion such as pitting and crevice attack are improved. Alloy 2507 has excellent localized pitting resistance. High resistance to chloride stress corrosion cracking · High Strength · Superior resistance to chloride pitting and crevice corrosion · Good general corrosion resistance · Suggested for applications up to 600° F · Low rate of thermal expansion · Combination of properties given by austenitic and ferritic structure · Good weldability and workability

The triangular bending guardrail net is made of high-quality Q 235 low carbon cold drawn steel wire, cold drawn low carbon steel wire and low carbon steel wire. And carry out the corresponding anti-corrosion treatment: electric galvanizing, hot dip galvanizing, spraying, dipping and stainless steel wire, etc. (generally using dipping treatment). Triangular bending guardrail net features: woven welding bending, commonly used peach column connection is also called peach column guardrail net. It has the characteristics of beautiful and durable mesh structure, wide vision, variety of colors, high strength, good steel and beautiful shape. It plays both the role of guardrail and beautification. The triangular bending guardrail net is made of high-quality Q 235 low carbon cold drawn steel wire, cold drawn low carbon steel wire and low carbon steel wire. And carry out the corresponding anti-corrosion treatment: electric galvanizing, hot dip galvanizing, spraying, dipping and stainless steel wire, etc. (generally using dipping treatment). Triangular bending guardrail net features: woven welding bending, commonly used peach column connection is also called peach column guardrail net.

Workshop isolation net is a kind of movable guardrail net product used for temporary isolation of workshop area. Can choose bilateral type, frame type, bending type guardrail net. The product has the advantages of simple installation, convenient removal, high protection strength, good rigidity, beautiful appearance, broad vision, bright and relaxed feeling. Workshop isolation net after dipping plastic, galvanized anti-corrosion treatment with anti-corrosion, anti-aging characteristics. Its products are mainly used indoors, there is no light, so the service life is longer than other guardrail products. Can be processed according to customer requirements. Our company stock supply height of 1.2 meters, 1.5 meters, 1.8 meters and 2 meters, 2.5 meters, 3 meters, 4 meters. The selected metal raw materials are relatively simple to be disturbed by external factors, so the health condition of the workshop is very important, and if the dust is relatively large, we should pay attention not to let the dust fly. If the dust falls on the workshop, it should be cleaned in time. Under normal circumstances, the service life of the workshop barrier net is relatively long. However, if you do not pay attention to the maintenance of its original life when it is usually used, it is difficult to reach. So, about this kind of workshop equipment to carry out reasonable maintenance? The selected metal raw materials are relatively simple to be disturbed by external factors, so the health condition of the workshop is very important, and if the dust is relatively large, we should pay attention not to let the dust fly. If the dust falls on the workshop, it should be cleaned in time, because the impurities in the dust will make the paint outside the net fall, which will make the net wire corroded faster. If it is damaged, it is necessary to replace the new metal material and weld it well in time to avoid the gradual expansion of the scale of the damaged place, thus affecting the use of the entire barrier network. If the above oil can not be cleaned with ordinary water, it can be scrubbed with dishwashing liquid. The company mainly deals in color-coated, galvanized, stainless steel pipes, stainless steel coils, stainless steel plates of various materials; hot-rolled series of rebar, medium and heavy plates, coils, I-beams, angle steels, channel steels, H-beams and other steel products and deep processing Service. (The company’s annual inventory is more than 50,000 tons).The company adheres to the concept of “integrity first, service-oriented”, relying on the strong strength of major domestic steel groups, exerting the company’s strong resource integration capabilities, and serving and satisfying the needs of customers both in China and at abroad.Additionally, Zhishang Steel also has a powerful and professional logistics distribution system, which can provide customers with efficient, fast and flexible logistics services at any time.Our business covers Southeast Asia, the Middle East, Africa, Australia, Europe, the United States and other countries.Looking forward to the future, in order to maintain in-depth and stable cooperation with customers both at home and abroad, all employees of Zhishang Steel will work harder to provide Better products and services to create more added value for customers.

Minimum Order: 1 bags

galvanized steel plate has acid and alkali corrosion resistance , high te- mperature resistance, rust resistance and long service life.Use precision cutting instrument to make the cutting surface of stainless steel plate flat without scratches and burrsThe galvanized steel plate is accurate in size, uniform in thickness, easy to bend and reprocess, and the products produced are of high quality. Alloyed galvanized steel plate is also made by hot dipping, but immediately after the trough, it is heated to about 500℃, so that it produces zinc and iron alloy film. This galvanized sheet has good coating tightness and weldability. galvanized steel plate has acid and alkali corrosion resistance , high te- mperature resistance, rust resistance and long service life.Use precision cutting instrument to make the cutting surface of stainless steel plate flat without scratches and burrsThe galvanized steel plate is accurate in size, uniform in thickness, easy to bend and reprocess, and the products produced are of high quality.

Minimum Order: 1 bags

The Chinese clan is the first country in the world to smelt iron and steel. Our ancestors mastered some skills of iron smelting, steelmaking, casting and forging and heat treatment three thousand years ago, more than 1700 years earlier than European countries. important contributions to human progress. Steel has become the most basic and important material for modern industrial and agricultural production, transportation, national defense and even people's life. At present, although various new inorganic materials and organic synthetic materials have been greatly developed. But in terms of production cost and wide applicability, they are far from being able to replace steel. Therefore, the production capacity of steel is still one of the important symbols to measure the national strength of a country. The reason why iron and steel materials are so widely used is that iron ore deposits are concentrated, the storage capacity is large, mining and smelting are relatively economical, and semi-finished steel products have strong cold and hot deformation capabilities. The finished product has excellent mechanical properties (strength, plasticity and impact resistance) and processing properties (cutting, welding, cold deformation, etc.). However, compared with silicic acid materials, polymer synthetic materials and some non-ferrous metals, its biggest disadvantage is that it is easy to lose weight due to corrosion and even completely destroy it in the atmosphere or under various media conditions such as acid, alkali, and salt. .

H-beams and I-beams are beams made of structural steel extensively used in construction applications. They are commonly used in building homes, bridges, large trailers, etc., due to the high strength imparted by them and the ease of construction.

Minimum Order: 1 bags

15CrMoG high pressure boiler tube is alloy high pressure boiler tube, alloy structural steel. The seamless steel pipe made of this kind of steel is widely used in hydraulic prop, high pressure gas cylinder, high pressure boiler, fertilizer equipment, oil cracking, automobile half shaft sleeve, diesel engine, hydraulic pipe fittings and other pipes.

Minimum Order: 1 bags

Product Description: Decorativo TUBO RECTANGULAR BRILLANTE POLISHED 600 C-304 X 6 METROS is a stainless steel rectangular tube. It is constructed from high-grade stainless steel and features a polished finish that will not tarnish or corrode. The tube is 6 meters in length and has a diameter of 600 C-304. It is available in a variety of sizes and lengths, making it easy to find the perfect size for any project. This tube is perfect for a variety of projects that require a strong and durable material.The stainless steel rectangular tube is designed to be used in a wide range of applications. It is perfect for use in the construction of frames, supports, and other structural components. The tube is also ideal for use in the production of furniture, shelving, and other decorative elements.The tube is resistant to corrosion and rust, making it perfect for outdoor use as well.