Minerals & Metals

The square tube is divided according to the production process: hot rolled seamless square tube, cold drawn seamless square tube, extruded seamless square tube, welded square tube. Among them, the welded square tube is divided into: (a) According to the process-arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnace welding square tube (b) According to the weld seam-straight seam welded square tube, spiral welded square tube.

Minimum Order: 1 bags

Square and rectangular pipe is a name for square pipe and rectangular pipe, that is, steel pipes with equal and unequal side lengths. It is made of strip steel that has been processed and rolled. Generally, the strip is unpacked, flattened, coiled, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length. The usual delivery length of square and rectangular tubes is 4000mm-12000mm, mostly 6000mm and 12000mm. The square rectangular tube is allowed to deliver short-length and non-fixed-length products not less than 2000mm, and it can also be delivered in the form of an interface tube, but the buyer should cut off the interface tube when using it. The weight of short-length and non-fixed- length products shall not exceed 5% of the total delivery quantity, and for square and rectangular pipes with a theoretical weight greater than 20kg/m, shall not exceed 10% of the total delivery quantity. Process classification According to the production process, square and rectangular pipes are divided into: hot-rolled seamless square pipes, cold- drawn seamless square pipes, extruded seamless square pipes, and welded square pipes. 1. According to the process - arc welded square tube, resistance welded square tube (high frequency, low frequency), gas welded square tube, furnace welded square tube 2. According to the welding seam - straight seam welded square tube, spiral welded square tube. Material classification The square tube is divided into: ordinary carbon steel square tube, low alloy square tube. 1. Common carbon steel is divided into: Q195, Q215, Q235, SS400, 20# steel, 45# steel, etc. 2. Low alloy steel is divided into: Q345, 16Mn, Q390, ST52-3, etc. Production Standard Classification According to the production standard, the square tube is divided into: national standard square tube, Japanese standard square tube, British standard square tube, American standard square tube, European standard square tube, and non- standard square tube.

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PRODUCT DESCRIPTION 0.7mm 0.8mm 1.0mm 1.5mm 2mm Cold Rolled Stainless Steel Sheet 304 grade Alloy 304/304L resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. The alloy has excellent resistance to intergranular corrosion in the as-welded condition. Alloy 304/304L has excellent strength and toughness at cryogenic temperatures. Alloy 304/304L is non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices. Surface Finish We have imported equipment and professional engineers, so that the surface of each our stainless steel plate is far higher than customer expectations Surface Characteristic Processing Technology N0.1 Original Pickled after hot rolling 2D Blunt Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling 2B Blurred Hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + tempering rolling N0.3 Matte Polishing and tempering rolling with 100-120 mesh abrasive materials N0.4 Matte Polishing and tempering rolling with 150-180 mesh abrasive material NO.240 Matte Polishing and tempering rolling with 240 mesh abrasive materials NO.320 Matte Polishing and tempering rolling with 320 mesh abrasive materials NO.400 Matte Polishing and tempering rolling with 400 mesh abrasive materials HL Brushed Grind the surface of the steel belt with an appropriate grinding grain size to make it show a certain longitudinal texture BA Bright The surface is annealed and shows high reflectivity 6K Mirror Rough grinding and polishing 8K Mirror Fine grinding and polishing ASTM Cold Rolled 304 Stainless Steel Sheet 0 Our Factory We have imported equipment, 20,000 tons of inventory, professional masters, and a clean environment. Customer satisfaction is the basis of our service. If you need stainless steel materials, please contact our professional sales as soon as possible. They will give you the fastest. We make the most professional and reasonable quotation at the speed of our company, and look forward to our long- term cooperation as soon as possible ASTM Cold Rolled 304 Stainless Steel Sheet 1 Our Advantage 1. Wide Specifications Range; 2. Pure steel chemical composition; 3. Outstanding mechanical properties; 4. Good performance after welding; 5. Good shape and high precision; 6. Excellent corrosion-resistant and long service life. Package 1. Sheets covered with wooden plate for protection in transportation; 2. All sheets will be loaded in strong wooden packages; 3. Every cartons loaded with good shoring and strengthening; 4. Take container loading pictures and seal the container; 5. Transportation speed is quick. And keep customer each step informed. ASTM Cold Rolled 304 Stainless Steel Sheet 2

DATIAN (DT) Fastener is famous for producing quality heavy hex nuts. We, one of the professional heavy hex nut manufacturers, have a in house full line heat treatment machine used to improve the hardness and mechanical properties of heavy hexagonal nut in order to serve different high requirement areas. The heavy hex jam nut standard we listed below are most ASTM A194/A563 and ANSI/ASME B18.2.2 heavy hex nuts. Compare to finished hex nuts, the heavy hex nut carry higher grade and slightly wider and thicker diameters to meet the greater length of thread engagement and better resistance to stretching or widening. Contact DT Fastener, a professional nuts and bolts manufacturing company, for more info now! Heavy Hex vs Hex The first thing to declare is that both heavy hex bolt nut and finished hex nuts belong to the hexagon nut classification. Simply put, the difference between them is that heavy hex nuts have larger widths across the flats and heights of the same nominal size. This gives heavy hex nuts higher load retention and tensile strength. This also explains why heavy hex nuts can be heat treated to achieve higher hardness. There are two production processes for Datian Fastener's Heavy hexagon nuts - cold heading and hot heading. The cold heading machine of Datian Fasteners has the ability to form the nut from raw material to finished product at one time. Our cold heading machine integrates the rolling thread machine and the cold heading machine to maximize efficiency, ensure the customer's delivery requirements, and minimize the labor cost, which makes the price of our heavy hexagonal nut competitive all over the world. Hot forming: Generally, hot forming is selected for larger fasteners, and the diameter range are generally 1''~4''~(M30~M100) or even larger. The material used in the hot heading machine is generally round steel, without cold drawing and pickling. The production step is to cut the material first, and then upsetting by the punch. The surface of the semi-finished product of red punching is rougher than that of cold heading. After tapping, the two sides of the nut are chamfered with a CNC machine, and finally it is completed after heat treatment and surface treatment. Cold heading and hot heading are roughly divided into the following steps: Cold heading: wire drawing - cold heading - (heat treatment) - tapping - surface treatment Hot forming: cutting material - red punching - chamfering - turning - (heat treatment) - tapping - surface treatment Or cutting material - upsetting ball - annealing, phosphating - forming - punching - (heat treatment) - tapping - surface treatment. There are many hex nuts suppliers, but we are one of the best choices for you.

The nearly 20 years that DATIAN (DT) Fasteners has specialized in the production of heavy hex bolts. Many customers need to purchase by sets. Our loyal customers usually need to source hex bolts / heavy hex head bolts together with hex nuts. As a professional heavy hex bolt suppliers, DT provides complete heavy hex bolt supply chain services. we are able to produce A307 B heavy hex cap screws, A193 B7 heavy hex bolt, A325 heavy hex screws, etc. Types Of Heavy Hex Head Bolt For Sale Get Heavy Hex Bolt At A Great Price A325 Heavy Hex Bolts A193 B7 Hex Bolt DIN 933 Hex Bolt A307B Heavy Hex Bolts heavy hex bolt heavy hex bolt 1 heavy hex bolt 2 heavy hex bolt 3  Heavy Hex Head Bolt Applications High-strength hexagon bolts are mechanical properties of grade 8.8 or above, and they are all bolts that require heat treatment Bolts made of high-strength steel, or bolts that require a large pre-tightening force, can be called high-strength bolts. High-strength bolts are mostly used for the connection of bridges, rails, high-voltage, and ultra-high-voltage equipment. The fracture of this kind of bolt is a mostly brittle fracture. High-strength bolts applied to ultra-high pressure equipment need to be prestressed to ensure the sealing of the container. Application areas of high-strength bolts: Steel Fabrication, Construction of Railroad Systems, Pumps, and Water treatment, Construction of Modular Buildings, and Renewable and Alternative Energy. Heavy Hex Head Bolt Manufacturing Process Steps Include: Usually, the forming of the bolt head is processed by cold heading. The cold heading forming process includes cutting and forming, single-station single- click, double-click cold heading and multi-station automatic cold heading. An automatic cold heading machine performs multi-station processes such as stamping, heading forging, extrusion and diameter reduction in several forming dies. (1) Use a semi-closed cutting tool to cut the blank, the easiest way is to use a sleeve type cutting tool. (2) During the transfer of short-sized blanks from the previous station to the next forming station, the metal fasteners with complex structures are processed to improve the accuracy of the parts. (3) Each forming station should be equipped with a punch return device, and the die should be equipped with a sleeve-type ejector device. (4) The structure of the main slider guide rail and process components can ensure the positioning accuracy of the punch and the die during the effective use period. (5) The terminal limit switch must be installed on the baffle that controls the material selection, and attention must be paid to the control of the upsetting force. Heat Treatment Of High-Strength Heavy Hex Screw: High-strength nuts and bolts must be quenched and tempered according to technical requirements. The purpose of heat treatment and tempering is to improve the comprehensive mechanical properties of the heavy hex bolt to meet the specified tensile strength value and yield ratio of the product. The heat treatment process has a crucial impact on high-strength fasteners, especially their intrinsic quality. Therefore, in order to produce high-quality heavy hex head bolts, advanced heat treatment technology and equipment must be available. As one of the leading heavy hex bolt manufacturers in China, DT Fastener possesses a complete production line of heavy hex cap screws. Feel free to contact us for more details! For more information about fastener price and heavy hex bolt price, please feel free to contact us!

GB/T 923 acorn hex nut introduction: GB/T 923 black acorn nuts is a nut with a cap, whose function is to prevent foreign impurities and moisture from invading the interior and cause corrosion and rust. At the same time, in places where some industrial machinery often comes into contact with the human body, the GB/T 923 acorn nuts and bolts are often selected as bolt capping to reduce the damage to the human body by the machinery. The purpose of the acorn nuts bolts is the same as that of the hex nuts for sale. Its characteristic is that it is not easy to slip the main nut with a wrench during assembly and disassembly. dismantle. Mainly used for rough and simple parts. GB/T 923 Acorn Hex Nut Specifications  GB /T 923 Acorn Nuts and Bolts GB /T 923 - 2009 Acorn Hex Nuts There are many nuts and bolts manufacturers, but we are one of the best choices for you. For more information about different types of fastener, please feel free to contact us!

GB/T 889.2 lockable nut has the following 3 advantages: First, excellent anti-vibration performance: when the thread is tightened, the crest thread of the lockable nut and bolt tightly enters the 30° wedge-shaped slope of the nut and is clamped, and the normal force exerted on the wedge- shaped slope is the same as the bolt's normal force. The axis forms an included angle of 60° instead of 30°. Therefore, the normal force generated when the anti-loose nut is tightened is much larger than that of the ordinary standard lock nut screw, and it has a great anti-loose and anti-vibration ability. Second, the wear resistance and shear resistance are strong: the 30° slope of the nut thread bottom can make the lockable nut locking force evenly distributed on the threads of all the teeth. Lock nut pack can better solve the problems of thread wear and shear deformation. Third, the repeated use performance is good: a lot of use shows that the locking force of the locking nuts and bolts will not decrease after repeated tightening and dismantling, and the original locking effect can be maintained. GB/T 889.2 Lockable Nut Specifications  GB /T 889.2 Lockable Nut And Bolt GB /T 889.2 - 2016 Prevailing Torque Type Hexagon Nuts(With Non-Metallic Insert), Style 1-Fine Pitch Thread If you need any kinds of nut and bolt supply, please contact us, as one of the most professional fastener manufacturers, Datian is willing to offer you high quality products.

GB/T 12868 Black T Nuts Features: The principle of the inclined plane is adopted, the deformation of the inclined plane is integrated to form a thread, and then it is rotated into a parallel motion, the lead screw is rotated once, and the bolt and t nut is moved to a pitch. GB/T 12868 black hex t nut can effectively save time and effort. GB/T 12868 Galvanized heavy duty t nuts Specifications  Heavy Duty T-Nuts GB /T 12868 GB /T 12868 - 1991 T-Slot Nut If you need any kinds of quality fasteners, please contact us, as a professional fasteners manufacturer in China, Datian is willing to offer you high quality products.

Dhina railway fastener are widely used in urban rail construction. In recent years, rail fasteners have been put into the field of railway and steel structures, and they are very popular and sought after Rail joints of railways are the source of vibration. In order to overcome this source of vibration and reduce the occurrence of rail joint diseases, the use of railroad track bolts and nuts is the best choice. They can eliminate the diseases of rail joints and increase the resistance of joints. Although the construction of railways is inseparable from the role of railway fasteners, not all specifications and types of railway bolts and nuts are suitable for railway construction. The strength of some ordinary railway fasteners cannot adapt to the vibration of high-speed rail, railway, and subway. All rail transportation requires high- strength railway fasteners. As railway construction continues to increase, the demand for high-strength railway fasteners around the world will also rapidly increase. As one of the leading railway fastener factories in China, DT can provide you with quality railway fasteners at great prices. Feel free to contact at any time. If you need any kinds of quality fasteners, please contact us, as a professional fastener factory, Datian is willing to offer you high quality products.

The standard refers to the American ASTM or ASME standard with new and unique technical clauses added, which is suitable for a type of petrochemical fasteners used in high temperature and high-pressure environments, including bolts, studs, nuts, etc. The mechanical properties and materials specified in GB/T3098/8 "Mechanical Properties of Carbon Steel Fasteners Part VIII Heat-resistant Threaded Connections" are suitable for fasteners that can withstand high temperature, alternating loads, and to a greater extent. Be sure to tighten the axial force. High temperature and high-pressure petrochemical fasteners - commodity fasteners and special fasteners 1. Common Commodity wind energy fasteners: ●The type and size of hexagon head bolts meet the requirements of GB/T5782, A and B grades. The mechanical properties of these petrochemical fasteners refer to the performance grades of carbon steel bolts according to GB/T3098/1 standard: A2-50, A4-50, A2-70, A4-70; ●The nut type conforms to GB/T6170 I-type nut and special nut (pipe flange nut). Its mechanical properties refer to the performance grades of carbon steel according to the GB/T3098/2 standard: grades 6 and 8; the performance grades of stainless steel nuts of GB/T3098/15 are A2-50, A4-50, A2-70, A4-70 ; 2. Special Petrochemical Fasteners: ●In order to be suitable for the conditions of high-temperature resistance, low-temperature resistance, and environmental corrosion resistance, formulate suitable special fasteners, such as full-threaded studs for pipe flanges, in accordance with the provisions of GB/T901. The dimensions of hexagon head bolts and nuts shall be carried out according to national standards. ●Selected materials (grades) include medium carbon alloy steels: 35CrMo (applicable temperature +100-525℃); 25Cr2MoV (applicable temperature>-20- -575℃); 42 CrMo (applicable temperature +100-525℃). The strength is between 690~890Mpa, that is to say, the medium carbon alloy steel is tempered at high temperature (550℃<=tempering temperature<=600℃) to obtain comprehensive mechanical properties to meet the service of high-temperature environment. ●Stainless steel materials selected are: 0Cr18Mi9 (applicable temperature -196--800 ℃); 0Cr17Mi12Mo2 (applicable temperature +196--800 ℃); the strength of stainless steel material obtained by solution treatment is between 690~890Mpa, and the performance level is A2- 70 A4-50 A4-80 grade. ●Using American standards, using stainless steel grades and materials: ASTM A193 B8 CL.2 (for temperature +196-525℃); A193 B8M CL.2 (for temperature +196- 525℃); A453660 (for temperature +29- 525℃); also includes A320L7 suitable for low temperature and high-pressure environment (applicable temperature -100℃). ●Special grade nut material (grade) can choose medium carbon alloy steel: 30CrMo, 35CrMo; guaranteed load There are many fastener manufacturers, but we are one of the best choices for you.

PRODUCT DESCRIPTION Trailer Spare tire Mount with 120 LBS Weight Capacity Easy to Install Stainless Steel Hitch Spare Tire Carrier Hitch spare tire mount is folding constructed. Any wheel size is compatible with this Spare Tire Mount. Hitch tire carrier foldable construction for SUV fits any vehicle with 2-inch receiver. Speci , fication Product Name Trailer Spare tire Mount with 120 LBS Weight Capacity Easy to Install Stainless Steel Hitch Spare Tire Carrier Style Modern minimalist metal style Country of Origin China Material Carbon Steel Color White/Black/Customized Used Side Mount Ladder Rack Fit for Trucks and Vans Feature Strong Aluminium, waterproof, not rusty, long service life. Size Customized Sturdy Design Angled and raised mount design makes this ideal for boat trailers as well. Mount Rack Adaptor is made of high-tensile steel and has a powder coated finish for corrosion resistance. Product technical parameters and table Products Sheet Metal Fabrication, Frameworks, Brackets, Structures, Stands, Tables, Railings, Grills, Racks, Enclosures, Cases, Metal Tools, Fences, machinery body etc. Material Mild Steel, Stainless Steel, Aluminum Manufacturing Process Flame Cutting, Plasma Cutting, Laser Cutting (Capacity 1.5m*6m, mild steel 0.8-25mm, stainless steel 0.8-20mm, Aluminum 1-15mm), Bending (25mm Max), Welding (MIG, TIG, Spot Welding, etc.), Punching, Stamping, Machining etc. Finish Galvanizing, Powder Coating, Painting, Dull Polish, Mirror Polish, Bead blasting, etc. Main Market Australia, United States, Europe and other Countries. Our some products pictures: 120LBS Trailer Spare Tire Mount Metal Fabrication Products Hitch Spare Tire Carrier 0 Production Equipments: 120LBS Trailer Spare Tire Mount Metal Fabrication Products Hitch Spare Tire Carrier 1 Quality Certification: 120LBS Trailer Spare Tire Mount Metal Fabrication Products Hitch Spare Tire Carrier 2 Customer Visit Us: 120LBS Trailer Spare Tire Mount Metal Fabrication Products Hitch Spare Tire Carrier 3 Delviery your order in time: 120LBS Trailer Spare Tire Mount Metal Fabrication Products Hitch Spare Tire Carrier 4 About us: Qingdao TianHua Yihe Foundry Factory located in the beautiful port city of Qingdao, we have 20 years experience in the production of metal fabrication products. We provide a custom metal fabrication solutions according to customer requirements, includes prototyping design, drawing converting, manufacturing,quality control, reports, printing,packaging,container loading and delivery solution. Our mainly service of metal fabrication includes sheet metal and tube fabrication, includes metal cutting (saw, laser, flame, plasma ), metal bending (sheet folding, tube/rod/section bending, tube coiling), metal stamping, deep drawing, CNC punching, welding and fabrication, assembly and surface finishing. Perfect products come from perfect manufacture and equipments we use, a great number of the processing equipments are used such as the Laser cutting machines,the plate-shearing machines,the NC punching Machine,the NC bending machine, the steel forming machine,the milling machine etc. Moreover, our management personnel and employees are open to continue improvement to achieve highest level of customers’ satisfaction in packing,marking,and delivery.Our well-educated personnel are always ready to give prompt response to clients’ demands on efficient communication, correct documentation presentation, and on- time delivery all the time. Insisting on the tenet of ” Best Quality, Best Service”,we are looking forward to build long-term business relationships with you for mutual benefit.Customers from worldwide are always welcome to contact us,meet your products needs. Founded in 2002, with more than 20 years of fabrication and sales experience · Quality first · Excellent after-sales service · Can be customized according to your requirements

Product Description Cutting Aluminum Sheet Metal Alloy 3003 3105 3005 Aluminum plates advantages : Lightweight: Aluminum plates are lightweight and have a high strength-to-weight ratio, which makes them ideal for applications where weight is a concern. Corrosion-resistant: Aluminum has a natural oxide layer that protects it from corrosion. This makes it ideal for use in outdoor and marine applications. High thermal conductivity: Aluminum has a high thermal conductivity, which makes it an excellent material for heat sinks, radiators, and other applications where heat dissipation is important. Durable: Aluminum is a strong and durable material that can withstand a range of environmental conditions, including high temperatures and extreme weather. Machinable: Aluminum is easy to machine, which makes it ideal for use in a range of manufacturing processes. Recyclable: Aluminum is a highly recyclable material, which makes it an environmentally friendly choice for many applications. Versatile: Aluminum plates can be shaped, bent, and cut to fit a range of applications, making them a versatile material for many industries. Specifications Product Name Aluminum Sheet Alloy/Grade 1000, 2000, 3000, 5000, 6000, 7000, 8000 Series Temper O-H112,T3-T8,T351-T851 Thickness 0.13mm-350mm Width 100mm-2200mm Length As per your requirements Application roofing, ceiling, cladding, gutter, facade wall, etc. Surface treatment Mill Finish,Coated,Powder Coated,Anodized,Polished mirror,Embossed,Etc. Tolerances As per your requirements Delivery Time 7-25 days after order confirmation MOQ 2 ton Loading Port Qingdao Port,Tianjin Port,Shanghai port. Price terms FOB, CIF, CFR, CNF, Etc. Payment terms L/C,D/A,D/P,T/T , West Union, Money Gram, Etc. Certificate ISO, RoHS Standards ASTM-B209,EN573-1,GB/T3880.1-2006 Special Specification is available on customer ’ s requirement Aluminum Grade 1000 Series Industrial Pure Aluminum(1050,1060 ,1070, 1100) 3000 Series Aluminum-manganese alloys(3A21, 3003, 3103, 3004, 3005, 3105) 5000 Series Al-Mg alloys(5052, 5083, 5754, 5005, 5086,5182) 6000 Series Aluminum Magnesium Silicon Alloys(6063, 6061, 6060, 6351, 6070, 6181, 6082, 6A02) 7000 Series Aluminum, Zinc, Magnesium and Copper Alloys(7075, 7A04, 7A09, 7A52, 7A05) 3.0mm Cutting Aluminum Plate Sheet Metal Alloy 3003 3105 3005 03.0mm Cutting Aluminum Plate Sheet Metal Alloy 3003 3105 3005 13.0mm Cutting Aluminum Plate Sheet Metal Alloy 3003 3105 3005 2 FAQ Q:Can I get samples before order ? A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings. Q:Can I go to your factory to visit? A:Of course, we welcome customers from all over the world to visit our factory. Q:How can I get a quotation from you ? A:You can send inquiry to us, and we will reply every inquiry in time. Q:What product information do I need to provide? A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase. Q:Does the product have quality inspection before loading? A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Boiler steel plate is one of the very key materials in boiler manufacturing, mainly refers to the hot rolled special carbon steel and low alloy heat resistant steel medium thick steel material used to manufacture boiler shell, pot drum, box end cover, hanger and other important parts. 16MnDR is a kind of steel plate for cryogenic pressure vessel. 16Mn -- indicates that manganese content in steel plate is about 0.16%, D- indicates low temperature, R- indicates pressure vessel. (Usually, steel with a high content of a certain chemical element needs to be marked in the material, for example, 1.6% manganese is written as 16Mn, 16MnDR is used for -40 degree pressure vessel steel plate.

Minimum Order: 1 bags

750 mm Spangle Zinc Coating Hot dip Galvanized Steel Coil for Construction Hot rolling carbon steel as raw materials, continuous hot galvanizing Construction 750Mm Zinc Coating Spangle Hot Dipped Galvanized Steel Coils 0 Main specification: Width:750 mmto 1250mm Thickness: 0.15 mm to 2.5mm Zinc coating: Z10 to Z27 (60g/m2 to 275g/m2, double sides) Surface condition: Regular spangle/zero spangle/mini spangle Annual production: 100, 000 MT/year Product Name 750 mm Spangle Zinc Coating Hot Dipped Galvanized Steel Coils Thickness 0.15 mm to 2.5mm Width 750 mmto 1250mm Payment term T/T,L/C Delivery time 45 days Grade Q195, Q195L, Q215, Q235, SPHC, SPHD, 08AL, SS300, SS400 MOQ 25 TONS Types sheet & coil & strip Surface normal spangle, big spangle, small spangle, zero spangle Zinc coating 60g-275g Output/Month 10000tons Weight/coil 3-8ton Application:Construction:roof for steel structure workshop,airport,storeroom Photos for building material Construction 750Mm Zinc Coating Spangle Hot Dipped Galvanized Steel Coils 1 Construction 750Mm Zinc Coating Spangle Hot Dipped Galvanized Steel Coils 2 Photos for Container Plate Construction 750Mm Zinc Coating Spangle Hot Dipped Galvanized Steel Coils 3