0 14mm-0 8mm aluminum zinc alloy coated steel sheet in 1mm~8mm hot rolled manganese ship building plate

Cold Rolled Steel 0.14mm-0.8mm Building Material Aluzinc Steel Galvalume Steel Coil . Product Description Hot-dip galvanizing is the reaction of molten metal with an iron substrate to produce an alloy layer thereby combining the substrate and the plating layer. Hot-dip galvanizing is to pickle iron and steel parts first. 1 5mm thick astm a36 304 stainless plate from china 1mm~8mm hot rolled manganese ship building plate10mm Thickness ASTM A283 A36 Grc A285 Grade C Cold Rolled/ Hot Rolled Carbon/304 201 Stainless /Galvanized Steel Plate Price FOB Price US $599-799 / Ton Min. Order 1 Ton. Chequered Plates in Aluminum, Mild Steel, SS, Manganese Skid-resisting Mild Steel Plate Chequered. Galvanised Chequered Plate , in 5 bar plate , plate thickness 9.5mm 1mm~8mm hot rolled manganese ship building plate

1.5 Mm Carbon Steel Sheet 1/4 1mm 2mm 3mm S355JR Hot 1mm~8mm hot rolled manganese ship building plate

High quality 1.5 Mm Carbon Steel Sheet 1/4 1mm 2mm 3mm S355JR Hot Rolled Mild Steel Sheet Metal from China, China's leading 1.5 mm mild steel sheet product, with strict quality control 1mm mild steel sheet factories, producing high quality s355jr carbon steel plate products. 1mm Welding Rod - Hucheng1mm Welding Rod - Factory, Suppliers, Manufacturers from China. We've been convinced that with joint efforts, the enterprise between us will bring us mutual benefits. We are able to assure you product or service quality and aggressive cost for 1mm Welding Rod, Sticks Of Welding Rod , Super Solder Wire , Butt Welding Machine , Welding Electrode 1mm~8mm hot rolled manganese ship building plate 2mm 4mm 6mm aluminum zinc sheet1mm/2mm/4mm/6mm Thick Galvanized Steel Sheet Metal for Corrugated Roofing Sheet US $ 700 - 1000 / Ton G3302 1998 ASTM A653M/A924M 2004 SGCC DX51D Q195 all according to your request 0.15mm-3.5mm 0.15mm - 3.5mm all available.Source from Shanghai Metal Corporation on

310S Stainless steel Tube

310S Stainless steel Tube manufacturer 310S stainless steel is austenitic chromium-nickel stainless steel, has good oxidation resistance, corrosion resistance, high temperature resistance, because of the higher percentage of chromium and nickel, making it has much better creep strength, can continue to work at high temperature, has good high temperature resistance. 321 Stainless steel tube manufacturer321 Stainless steel tube manufacturer. Seamless steel pipe (GB14976-2002) is used in the manufacture of various structures of low and medium pressure boiler superheated steam pipe, boiling water pipe and locomotive boiler superheated steam pipe, smoke pipe, smoke pipe and arch brick pipe pipe pipe of high quality carbon structural steel hot rolled and cold drawn 4047 Hot Roll Marine Grade Aluminium Plate Sheetmade in China 4047 3mm thick aluminum sheet plate. Henan Haomei aluminum Co.. Ltd is specialized in producing and marketing made in China 4047 3mm thick aluminum sheet plate aluminum hot -rolled thick plates ROPP cap materials pharmaceutical cap materials aluminum circle/disc for cookware aluminum drilling entry for PCB aluminum tape for aluminum plastic

440C Stainless steel tube manufacturer

440C Stainless steel tube manufacturer. 440C steel is a martensiform stainless steel. Carbon content of 1.0%, chromium content 16-18%. Anti-rust 630 Stainless steel tube manufacturer630 Stainless steel tube manufacturer. Stainless steel 630 is martensitic precipitation hardening stainless steel. 630 stainless steel performance characteristics is easy to adjust the strength level, can be adjusted through the change of heat treatment process, martensitic transformation and aging treatment of precipitation hardening phase is the main means of strengthening, 630 9s20k steel equivalent - Chovnahacu special steel supplier 1mm~8mm hot rolled manganese ship building plateC40 steel.EN 10083 C40 steel is meduim Carbon Steel which is similar to low carbon steel except that the carbon ranges from 0.30 to 0.60% the manganese from 0.50 to 1.65%.Increasing the carbon content is approximately 0.5% with an accompanying increase in manganese allows medium carbon steel to be used in the quenched tempered conditions.

AISI 304 0 5mm Thick 4 X 8 Embossed Stainless steel Sheet 1mm~8mm hot rolled manganese ship building plate

Excellent Price JIS SUS Cold Rolled /Hot Rolled Steel Plate 201 304 316L 430 0.6mm 0.8mm 1.0mm 1.2mm Perforated Stainless Steel Sheet. China AISI 201 304 304L 316 316L 4X8 2b Brushed Ba Mirror AISI 304 0 5mm Thick 4 X 8 Embossed Stainless steel SheetStainless Steel Sheet, Ss Sheet, 201 Ss Sheet manufacturer / supplier in China, offering AISI 1mm~8mm hot rolled manganese ship building plate AS/NZS 1594-HA250 FloorplateThickness Range 2.1mm 8mm Width Range 910mm 1550mm Surface Finish Hot-rolled floorplate Edge Condition Untrimmed (Mill Edge) Tolerances AS/NZS 1365 1996 Flatness Class A Certification BlueScope Steel Analysis and Mechanical tests Optional supply conditions may be subject to dimensional restrictions. ASTM A179, seamless tube, Seamless pipes, Cold Drawn Low 1mm~8mm hot rolled manganese ship building plateASTM A179 Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur.

ASTM A179, seamless tube, Seamless pipes, Cold Drawn Low 1mm~8mm hot rolled manganese ship building plate

ASTM A179 Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. ASTM A240 Grade 316 Stainless Steel Sheet and We can offer the best price of SS 316 Plate because of our bulk buying from leading manufacturers of SS 316 Hot rolled and cold worked Sheets and coils. We keep 316 Stainless Steel Plate in thickness 0.01 mm to 160 mm and SS 316 Strip in 0.02 mm to 100 mm. ASTM A573 Grade 70 Steel Plate ,ASTM A573 GR.70 ,ASTM ASTM A573 Grade 70 Steel Plates covers structural quality carbon manganese silicon steel plates in three tensile strength.ASTM A573 Gr.70 plates are engineered to be used in structural steel applications.SA573 Gr.70 plate is firstly and largely producing structural parts of the bolted and welded steel industrial area. We are stockholder of ASME SA573 Gr.70 Plate mainly in

ASTM a178 Welded Boiler Tube - Sunny Steel

Wall thickness:0.035in-0.360in(0.9-9.1mm) Different name Condenser steel tube,heat-exchanger tube,low carbon steel pipe,Resistance welded steel tube ,Bolier flues,Spoerheater flues and safe ends,ERW carbon steel pipes. Alloy 400 Plates, Nickel Alloy Steel Plates, 625 Plates 1mm~8mm hot rolled manganese ship building plateChampak Industries is one reputed stockiest and Supplier of Alloy 400 plates or Alloy 400 in the annealed condition in thicknesses from 3/16" (4.8mm) through 3" (76.2mm). Alloy 400, in the annealed condition, shown moderate strength. The alloy is also available in the as-rolled condition (Alloy 400AR) which imparts higher strength to the alloy. Alloy Steel Plates and ASTM A387 Sheet/ Strip/ Coil 1mm~8mm hot rolled manganese ship building plateAesteiron is a renowned Alloy Steel Plates Suppliers , which is been used by the manufacturers who works with petrochemical industries, oil and gas industries, chemical industries, shipbuilding etc. Low alloy steel plates are defined as having 1.5% to 5% total alloy content.Its common alloying elements are manganese, silicon, chromium, nickel, molybdenum, and vanadium.

Alloys Aluminum 5052 5083 6061 Flat Plate Price Per Kg

The commonly used alloys for marine aluminum plates are mainly 5000 series and 6000 alloys 5083 5086 6061 aluminum plates and other alloys. Most of the alloys are H111/H112/H321 and the common thickness is 1/2/3/4/5 mm. Marine grade aluminium 5052 is one of them. Get Price Calculator for Steel sheets and platesCalculator for Steel sheets and plates Calculators. Steel sheets and plates Seamless steel pipes - circular Hollow structural sections - circular Hollow structural sections - square Hollow structural sections - rectangular Round steel bars Square steel bars Flat bars Equal angles Unequal angles Channels - GOST Channels - UPN Beams - IPN Beams - IPE Beams - HEA (IPBL) Beams - Carbon Steel Plate 3mm Thick for Ship Building - Boiler 1mm~8mm hot rolled manganese ship building plateAH36, DH36, EH36 High Strength Shipbuilding Steel Plate Carbon Steel Plate 3mm Thick for Ship Building. AH36, DH36, EH36 Steel Plate for Shipbuilding. Shipbuilding steel plate refers to the carbon and alloy steel plate used in offshore and marine contructions, common grades are A, B, D, E, AH32/36/40, DH32/36/40, and EH32/36/40 which ranged 1mm~8mm hot rolled manganese ship building plate

Cheap Price 3003 H24 Color Coated Aluminum Coil For

1mm 2mm 3mm Thick Aluminum Sheet 3003 H14 H24. Aluminium Sheet, Aluminum Coil Roofing Wall Cladding, Aluminum Plate manufacturer / supplier in , offering 1mm 2mm 3mm Thick Aluminum Sheet 3003 H14 H24, 0.18mm Color Painted Aluminium Sheet Coil for Alucobond and Signboard, 1000 Series 3000 Series 0.6mm Color Coated Aluminium Coil China Carbon Steel Sheet, Carbon Steel Sheet Manufacturers 1mm~8mm hot rolled manganese ship building plateBest Quality 10mm Thickness ASTM A283 A36 Grc A285 Grade C ASTM A36 Cold Rolled/ Hot Rolled Ms Carbon /ASTM A240 304 316 Stainless/Galvanized Steel Sheet Price. FOB Price US $ 640-980 / Ton. Min. Order 5 Tons. Type Steel Plate. Standard ASTM, AISI, GB, JIS, DIN, BS. China Stainless Steel Factory - Stainless Steel Suppliers 1mm~8mm hot rolled manganese ship building plateBuy high quality and hot sale stainless steel in bulk with which is one of the leading stainless steel manufacturers and suppliers in China. Our factory also offers free sample for quality checking. Enjoy the competitive price and service now. - Page 43

Coated Surface Aluminum Sheet Plate For Shipbuilding

5083 Marine Grade Aluminum For Shipbuilding / Aluminium. 5083 H116 Marine Grade Aluminum Plate Sheet for Ship . Aluminum Sheet, Building Material, Roofing Sheet manufacturer / supplier in , offering 5083 H116 Marine Grade Aluminum Plate Sheet for Ship Building, ASTM Standard Dx51d SGCC Hot Dipped Gi Galvanized Steel Sheet for Roof Sheet, Brazing Material EN AW-5052 ASTM B209 Aluminium Alloy Plates Steel 0.8mm to 25mm 1220mm x 2440mm (4 Ft. x 8 Ft.) 1524mm x 3048mm (5 Ft. x 10 Ft.) AA5083 1mm~8mm hot rolled manganese ship building plate H34 ASTM B209 Aluminium Alloy Plates Hot Rolled Steel Building Materials Get Best Price. QQ-A250 H32 Aluminum Sheet Metal Plate Ship Building Get Best Price. Polished Surface PVC Filming Aluminium Metal Plate 3003 Sheet Get Best Price. F55 Super Duplex Stainless Steel Round Bar ssroundbarSuper metal manufacturing are suppliers of super duplex stainless steel in round bar, sheet and plate. Stocks are held in grade UNS S32760, S32750, F55, 1.4501.Super duplex stainless steel gives excellent corrosion resistance in a wide range of environments, providing outstanding resistance to pitting and crevice corrosion in seawater and other environments containing

Factory Sale Aisi 430 Stainless Steel Pipe

Hot Sale 430 Custom 5 inch stainless steel pipe. Stainless Steel Pipe . 2016 hot sales express stainless steel wire price the 0.5mm 0.8mm 1mm 2mm sus304 430 stainless steel wire .. This 5 coilbracelet is made with stainless steel memory wire - will adjust to .. Hot Rolled IS 2062 E410C Structural Steel PlateIS 2062 E410C Steel Plate Specification IS 2062 Hot Rolled Medium and High Tensile Structural Steel Dimension AISI, ASTM, BS, DIN, GB, JIS Width 1000mm 3000mm Thickness 5mm 150mm Length 3000mm -18000mm IS 2062 E410C Plate Mechanical Properties Hot rolled alloy steel plate-X120MN12 Products for Sale 1mm~8mm hot rolled manganese ship building plateType Steel Plate Technique Hot Rolled Surface Treatment other Application Container Plate Special Use High-strength Steel Plate Width 1-2m Length length 1.0-5.9(thickness)mm 1000(mm)length high strength steel plate MN13 MN13 high manganese steel plate 1.standard ASTM,AISI,DIN,JIS,GB 2.thickness 1.0-100mm 3.width 900-2500mm

How to calculate the weight of hot rolled mild steel plates?How to calculate the weight of hot rolled mild steel plates?Weight per sq. feet of hot rolled mild steel plates can be calculated as W = 40.8 t (1)Steel Plates - Size Weight - Engineering ToolBox Images of 1mm~8mm Hot Rolled Manganese ship building P

6mm Hot Rolled Wear Resistant High Manganese Mn13 Steel Plate MS Sheet In Mumbai, Maharashtra Manufacturers, Suppliers 1mm~8mm hot rolled manganese ship building plateHitesh Steel. Bhuleshwar, Mumbai. Sheet And Plate. Get Price Quote. We are one of the leading manufacturers and suppliers of superior-quality Sheets and Plates . They are made using premium-quality raw-materials in compliance with industrial guidelines. These sheets and plates are quality-tested products and guarantee flawlessness.

PRICING NOTICE Proposal to amend specifications of CIS 1mm~8mm hot rolled manganese ship building plate

It also proposes to extend the length of plate in specification because in some export outlets lengths up to 12,000mm are considered to be standard. Current specification Assessment Steel hot-rolled coil export, fob Black Sea, CIS, $/tonne Quality Width 1,000-1,500mm, thickness 2-8mm Quantity 1,000-3,000 tonnes Location fob Black Sea PRODUCT MANUAL FOR Hot Rolled Medium and High Pipe A312 TP316 Extrusion Plain Ends Brushed Stainless 1mm~8mm hot rolled manganese ship building plateHigh quality Pipe A312 TP316 Extrusion Plain Ends Brushed Stainless Steel Pipe ASTM from China, China's leading ASTM A312 brushed stainless steel pipe product, with strict quality control TP316 brushed stainless steel pipe factories, producing high quality Pipe A312 TP316 products.

Pressure vessel plate

Color coated steel plate is in the continuous unit to cold rolled strip steel, galvanized strip steel (electric galvanized and hot galvanized) as the base plate, after surface pretreatment (degreasing and chemical treatment), with the method of roller coating, coated with a layer or multiple layers of liquid coating, after baking and cooling plate. SUS304 EN1.4301 stainless steel sheet 0.8mm 1mm 1.2mm 1 1mm~8mm hot rolled manganese ship building plateSUS304 EN1.4301 stainless steel sheet 0.8mm 1mm 1.2mm 1.5mm 1.8mm. Price $1299-$2999. Material 201, 202, 304, 304L 1mm~8mm hot rolled manganese ship building plate architectural decoration, luxury doors, elevators decorating, metal tank shell, ship building, decorated inside the train, as well as outdoor works, advertising nameplate, the ceiling and cabinets, 1mm~8mm hot rolled manganese ship building plate Hot-rolled surface 1mm~8mm hot rolled manganese ship building plate Source Factory ASTM JIS SUS 201 202 301 304 304l 316 316l 1mm~8mm hot rolled manganese ship building plateFactory ASTM JIS SUS 201 202 301 304 304l 316 316l 310 410 430 Stainless Steel Sheet/Plate/Coil/Roll 0.1mm~50mm, You can get more details

Ss Sheet 310S 321 Stainless Steel Plate Price 1mm~8mm hot rolled manganese ship building plate

1mm 3mm 6mm 10mm 20mm ASTM A36 Mild Ship Building Hot Rolled Carbon Steel Plate Ms Sheet US $581-891 / Ton AISI 1006 1010 1015 1024 1080 1215 Carbon Steel Sheet Prices Stainless Steel Heating Coils Galvanized Steel 1mm~8mm hot rolled manganese ship building plateProduct Description Stainless steel coil is also known as stainless steel belt and stainless steel coil, characterized by complete specifications, diverse materials; High dimensional accuracy, up to ± 0.1mm;Excellent surface quality, good brightness; Strong corrosion resistance, high tensile strength and fatigue strength; Stable chemical composition, pure steel, low inclusion content, Stainless Steel Shaped Architectural Tubing - - Righton 1mm~8mm hot rolled manganese ship building plateStainless steel has been the leading material for projecting progressive, modern architecture for more than eighty years. Most of our architectural tubing is fabricated from stainless steel 304L (1.4301) and stainless steel 316L (1.4404) due to its incredible strength, ductility and versatility. The fact that it is corrosion-resistant makes it 1mm~8mm hot rolled manganese ship building plate

Stainless Steel Sheet Suppliers Singapore + Astm A240 SS 1mm~8mm hot rolled manganese ship building plate

Global Stainless is Largest Stainless Steel Sheets Suppliers, Dealers, Manufacturers in India - Buy Jindal Make SS 304/316 Sheets at Wholesale Prices! we have large stock of 304, 304l, 316, 316l, 310s, 309s, 321, 904l, also including 200 series and 400 series. We can supply cut to size stainless steel plates, with both narrow and wide widths.Our stock of stainless steel plates Steel Business Connectioni) Prime Steel materials Business Connection Ltd enjoys strong relation with major construction companies and shipbuilders in Bangladesh. We are one of the major suppliers of steel products like steel plates, angles, profile, channel and coils to Bangladesh. Our strong performance in the market enabled us to earn exclusivity from steel mills in Korea and China for Bangladesh Steel Plates - Size WeightSteel Plate Thickness and Weight - Imperial Units Calculating Steel Plate Weight Steel Plate Thickness and Weight - Metric Units 1 in = 25.4 mm 1 lb/ft2 = 4.88 kg/m2 Hadfield Steel Plates Jaguar Steel Indiamanganese hadfield plate, hadfield hr high manganese steel plates dealer, hadfield manganese plate exporter, hadfield hot rolled steel manganese plate, hadfield high manganese steel plate supplier in india.

Wear Resistant Steel Plate/Sheet NM 500 - News - 1mm~8mm hot rolled manganese ship building plate

For the cold rolled steel sheet/plate, the thickness we have 0.1mm-8mm For the hot rolled steel sheet/plate, the thickness we have 0.35-200mm Applications for industrial : What are the units for plate thickness and weight?What are the units for plate thickness and weight?Steel Plate Thickness and Weight - Metric Units Plate Thickness (mm) Weight (kg/m2) 4 31.4 5 39.3 6 47.1 8 62.8 33 more rows 1mm~8mm hot rolled manganese ship building plateSteel Plates - Size Weight - Engineering ToolBox What is the standard size of a steel plate?What is the standard size of a steel plate?Steel Plate Thickness and Weight - Metric Units. Steel sheets and plates are typical stocked as size 2000 mm x 3000 mm.Steel Plates - Size Weight - Engineering ToolBox

What is the thickness of 316 stainless steel plate?What is the thickness of 316 stainless steel plate?We keep 316 Stainless Steel Plate in thickness 0.01 mm to 160 mm and SS 316 Strip in 0.02 mm to 100 mm. Before buying 316 Stainless Steel Sheet or Food Grade 316 Stainless Steel Sheet, you must know SS 316 Sheet Price Per Kg in India.ASTM A240 Grade 316 Stainless Steel Sheet and Plate supplier Where To Buy Inox Sheet AISI 304 Stainless Steel Sheet 0 1mm~8mm hot rolled manganese ship building plate

Where To Buy Inox Sheet AISI 304 Stainless Steel Sheet 0.8mm 0.9mm 1.0mm Thick offered by China manufacturer Minstar Steel. Buy Where To Buy Inox Sheet AISI 304 Stainless Steel Sheet 0.8mm 0.9mm 1.0mm Thick directly with low price and high quality. X120mn12 Steel Plate - sssmgroupHadfield Manganese Steel Plates Specification Item Hadfield High Manganese Steel Sheets Plates Thickness 35mm-150mm Length 3000mm-18000mm Width 1000mm-4500mm Supply Condition As Rolled, Normalized Rolling, Furnace Normalizing, Vacuum Degassing, Simulated Post-Weld Heat Treatment or as per customer requirement.Impact tested -52° C Process of

Zinc Coating 18 Gauge Galvanized Steel Sheet - KCR 1mm~8mm hot rolled manganese ship building plate

sa572 grade 50 steel plate for sale performance Read More. 1mm~8mm hot rolled manganese ship building plate Read More. BP500 anti-explosion plate Read More. 1. Metallic-Coated Products and Specifications Zinc Coating 18 Gauge Galvanized Steel Sheet. a36 steel angle sizes physical properties (2) 93.8%. Contact Supplier. Get More chinese suppliers aluminum alloy roofing material 3003 1mm~8mm hot rolled manganese ship building plateAccording to the product type it can be divided into 3005 alloy metal aluminum sheet plate 3005 alloy metal aluminum coil 3005 metal aluminum alloy belongs to AL-Mn alloy 3000 series metal aluminum alloy with manganese element as the main component the content is between 1.0-1.5 rust-proof function is better also can be called rust-proof 1mm~8mm hot rolled manganese ship building plate

en 10210 high strength hot rolled carbon steel plate for shi

Square Steel Tubing,Square Tubing,Steel Tubing manufacturer / supplier in China,offering En 10210 S420nh S420nlh S460nh S460nlh Structural Square Steel Tubing,Steel Plate X100crmov5-1 1.2363 Alloy Cold Work Tool Steel Plate,Steel Plate Sk4 Cold Work Tool Steel Plate and so on. 8mm ASTM A36 Hot Rolled Checkered Chequered Steel PlateBuilding 1mm~8mm hot rolled manganese ship building plate good material 1 8mm 3mm thickness hot rolled plate 1mm~8mm hot rolled manganese ship building plateHot rolled tear drop pattern checkered coil with width 1219 mm and thickness 2 mm,2.5 mm,2.7 mm,3 mm.Mild steel checkered plate size length 2440 mm × width 220 mm × thickness 8 mm.Hot rolled mild steel checkered plates 3 mm,4 mm,6 mm × 1220 mm × 2440 mm.1.2 mm thick AS2024 4T(D16T) checker sheet,anti skid button rivet,size 1220 mm 1mm~8mm hot rolled manganese ship building plate hot rolled 6mm ah32 ship building steel plate supplierHot rolled AH32 hot rolled high strength shipbuilding plate prices fell today,steel prices fell by 3.08 usd/ton,market prices fell and overall turnover was poor..It is expected that China's hot rolled AH32 hot rolled high strength shipbuilding plate prices or shocks will be weak in the near future..BBN steel supplies AH32 shipbuilding plate 1mm~8mm hot rolled manganese ship building plate

hot sale astm a36 sheet plate 7mm - High-Strength Steel 1mm~8mm hot rolled manganese ship building plate

Despriciton ASTM A36 Steel Plate Thickness 6mm-80mm Hot Rolled ASTM A36 Ss400 St37-2 Hot Rolled Mild Steel Plate Prices 5mm 6mm 7mm 9mm 11mm 12mm 20mm Thick Steel Plate 30mm Steel+Sheets 1mm 3mm 6mm 10mm 20mm ASTM A36 Q235 Q345 Ss400 Mild Ship Building Hot Rolled Carbon Steel Ballistic Armor Plate Ms SheetsPrice Range $700 - thick aluminum aluminium plate sheet for construction and 1mm~8mm hot rolled manganese ship building plateThe fine properties of hot rolled plate make them suitable for ships, automobile, construction machinery and pressure vessel. Ship Aluminium With international ship building industry development, Ship lightweight is taken more and more seriously,Due to aluminum have character of low density, high strength, high rigidity and resistance to . Get 1mm~8mm hot rolled manganese ship building plate1 8mm hot rolled steel plate for Industrial Use 1 YRS. Contact Supplier. Ad. 1/6. Steel Plates For Factory Direct Supply ASTM A36 1mm Carbon 1mm~8mm hot rolled manganese ship building plate X120Mn12 high manganese steel 1mm~8mm hot rolled manganese ship building plate

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