'required titanium flanges'

DIN 2634 titanium flanges PN 25 are high-performance weld neck flanges manufactured in accordance with the DIN 2634 standard. Specifically engineered for high-pressure applications up to 25 bar (362 psi), these flanges are made from premium titanium grades, offering exceptional corrosion resistance, low density, and outstanding mechanical strength even in the most demanding environments. Their lightweight yet highly durable nature makes them ideal for aggressive service conditions where conventional metal flanges may fail. Ladhani Metal Corporation is a trusted global manufacturer and supplier of titanium flanges, known for advanced manufacturing capabilities, precision machining, and strict adherence to international quality standards. Each flange undergoes thorough inspection and testing to ensure long-term reliability, safety, and resistance to extreme operating conditions. Pressure Rating: • PN 25 (25 bar / 362 psi): Designed for high-pressure systems requiring corrosion-resistant and mechanically robust flange connections. Flange Type: • Weld Neck Flanges Featuring an extended tapered hub, weld neck flanges provide excellent stress distribution at the base, ensuring strong and leak-proof joints in systems exposed to high pressure and thermal cycling. • Flat Face (FF) Flanges Ideal for use with softer gasket materials or in systems connecting to cast components, flat face flanges offer consistent and uniform gasket compression. Titanium Grades and Typical Composition: Titanium Grade 2 (UNS R50400) – Commercially Pure Titanium • Titanium (Ti): ≥ 98.9% • Iron (Fe): ≤ 0.30% • Oxygen (O): ≤ 0.25% • Carbon (C): ≤ 0.08% • Nitrogen (N): ≤ 0.03% • Hydrogen (H): ≤ 0.015% Applications: Preferred in seawater service, chemical processing, and marine equipment where high corrosion resistance in oxidizing environments is required. Titanium Grade 5 (Ti-6Al-4V / UNS R56400) – Alloyed Titanium • Titanium (Ti): Balance • Aluminum (Al): 5.5 – 6.75% • Vanadium (V): 3.5 – 4.5% • Iron (Fe): ≤ 0.40% • Oxygen (O): ≤ 0.20% Applications: Used in high-strength and high-temperature applications, including aerospace systems, pressure vessels, and heat exchangers due to its superior strength-to-weight ratio and fatigue resistance. Applications of DIN 2634 Titanium Flanges PN 25: • Offshore and Marine Systems Resists corrosion from seawater and brine solutions while maintaining strength under pressure. • Chemical and Petrochemical Processing Ideal for transporting corrosive media such as chlorine, acids, and alkalis at elevated pressures. • Desalination Plants Performs exceptionally in salt-laden and high-pressure water processing systems. • Aerospace and Defense Equipment Used in high-performance fluid systems requiring lightweight and high-strength components. • Pharmaceutical and Medical Systems Applied in ultra-clean and sterile environments where corrosion-free operation is essential. Key Features: • Manufactured in accordance with DIN 2634 dimensional and pressure requirements • PN 25 pressure rating supports high-pressure applications • Lightweight construction reduces system weight without compromising strength • Exceptional resistance to corrosion, erosion, and high-temperature oxidation • Weld neck configuration ensures strong, vibration-resistant joints • Available in commercially pure and alloyed titanium grades • Custom sizes, pressure classes, and surface finishes available upon request Conclusion: DIN 2634 titanium flanges PN 25 from Ladhani Metal Corporation are engineered to perform in extreme conditions where high pressure, aggressive media, and corrosion resistance are critical. With superior mechanical strength and long-term durability, these titanium flanges are ideal for advanced applications in marine, chemical, aerospace, and industrial systems. For technical consultations, specialized requirements, or pricing information, contact Ladhani Metal Corporation today.

DIN 2628 titanium flanges PN 250 are high-strength weld neck flanges manufactured according to the DIN 2628 standard. Specifically designed for high-pressure applications up to 250 bar (3625 psi), these flanges ensure secure, leak-free connections in systems where weight reduction, corrosion resistance, and long-term reliability are critical. Titanium flanges offer exceptional resistance to aggressive chemicals, seawater, and elevated temperatures, making them ideal for demanding industrial environments. Ladhani Metal Corporation is a globally recognized manufacturer and supplier of precision-engineered titanium flanges. Our DIN 2628 PN 250 titanium weld neck flanges are trusted in high-performance applications across aerospace, marine, chemical processing, desalination, power generation, and offshore industries for their unmatched strength-to-weight ratio, durability, and corrosion resistance. Pressure Rating: • PN 250 (250 bar / 3625 psi): Suitable for high-pressure piping systems requiring robust mechanical performance and corrosion resistance. Flange Type: • Weld Neck Flanges Designed with a tapered hub for smooth flow transition and reduced stress at the weld neck connection, ideal for high-pressure and high-temperature conditions. • Flat Face (FF) Flanges Flat face flanges ensure uniform gasket compression and are commonly used with brittle materials or cast components to prevent flange distortion. Titanium Grades and Composition: Titanium Grade 2 (UNS R50400) • Titanium (Ti): ≥ 98.9% • Iron (Fe): ≤ 0.30% • Oxygen (O): ≤ 0.25% • Carbon (C): ≤ 0.08% • Nitrogen (N): ≤ 0.03% • Hydrogen (H): ≤ 0.015% Applications: Commercially pure titanium with excellent corrosion resistance, especially in oxidizing and chloride-containing environments. Commonly used in desalination, marine, and chemical processing. Titanium Grade 5 / Ti-6Al-4V (UNS R56400) • Titanium (Ti): Balance • Aluminum (Al): 5.5 – 6.75% • Vanadium (V): 3.5 – 4.5% • Iron (Fe): ≤ 0.40% • Oxygen (O): ≤ 0.20% Applications: High-strength titanium alloy with excellent corrosion resistance and mechanical properties. Widely used in aerospace, offshore oil and gas, and high-performance industrial systems. Applications of DIN 2628 Titanium Flanges PN 250: • Aerospace and Defense Used in lightweight, high-pressure hydraulic and fuel systems requiring superior mechanical performance and corrosion resistance. • Marine and Offshore Engineering Ideal for seawater systems, ballast water treatment, and underwater piping due to titanium’s exceptional resistance to saltwater corrosion. • Chemical and Petrochemical Plants Suitable for highly corrosive and high-pressure chemical transport lines, reactors, and heat exchangers. • Desalination and Water Treatment Used in brine filtration and pressure vessels where resistance to chlorides and corrosion fatigue is essential. • Power Generation Employed in nuclear and thermal plants where high-temperature corrosion resistance and structural stability are required. Key Features: • Manufactured in accordance with DIN 2628 specifications • PN 250 pressure rating for high-pressure industrial use • Weld neck design for enhanced strength and sealing • Available in Titanium Grade 2 and Grade 5 materials • Flat face option for even gasket sealing and surface compatibility • Exceptional resistance to corrosion, chlorides, and seawater • Lightweight construction with high mechanical strength • Custom sizes, pressure classes, and finishes available upon request Conclusion: DIN 2628 Titanium Flanges PN 250 from Ladhani Metal Corporation are engineered for critical applications where high strength, pressure performance, and corrosion resistance are essential. Available in titanium Grade 2 and Grade 5, these weld neck flanges provide a reliable solution for industries operating under extreme conditions. Contact Ladhani Metal Corporation for technical support, custom specifications, or to request a quotation tailored to your project requirements.

DIN 2567 titanium flanges are precision-engineered threaded flanges designed for high-performance, medium-to-high-pressure piping systems. Manufactured according to the DIN 2567 standard, these flanges offer exceptional resistance to corrosion, extreme temperatures, and aggressive media. The threaded design allows for easy, weld-free installation, making them ideal for applications where frequent maintenance or system modifications are required. Ladhani Metal Corporation is a leading manufacturer and exporter of titanium flanges, supplying durable and high-quality components for industries that demand superior corrosion resistance and mechanical strength. DIN 2567 titanium flanges are widely used in marine, chemical, aerospace, and water treatment systems. Pressure Ratings: • PN 25 (25 bar / 362 psi): Suitable for moderate to high-pressure systems handling corrosive fluids or gases. Ideal for chemical, marine, and water treatment applications. • PN 40 (40 bar / 580 psi): Designed for high-pressure, high-performance environments requiring maximum reliability and resistance to mechanical stress. Commonly used in offshore, aerospace, and power generation systems. Flange Types: • Threaded (Screwed) Flanges Quick and convenient for non-welded, removable connections in high-purity or corrosive systems. • Raised Face (RF) Flanges Designed to enhance sealing efficiency by focusing compression on the gasket area. • Flat Face (FF) Flanges Ideal for use with non-metallic or brittle mating materials in low-to-medium pressure environments. • Forged Threaded Flanges Provide enhanced mechanical integrity, dimensional precision, and impact resistance. • Custom-Machined Flanges Available in customer-specified sizes, pressure ratings (PN 25, PN 40), and titanium grades. Titanium Grades and Composition: Grade 2 (Commercially Pure Titanium) Composition: Titanium (Ti): ≥ 98.9% Iron (Fe): ≤ 0.30% Oxygen (O): ≤ 0.25% Carbon (C): ≤ 0.08% Nitrogen (N): ≤ 0.03% Hydrogen (H): ≤ 0.015% Grade 5 (Titanium Alloy – Ti-6Al-4V) Composition: Titanium (Ti): Balance Aluminum (Al): 5.5 – 6.75% Vanadium (V): 3.5 – 4.5% Iron (Fe): ≤ 0.40% Oxygen (O): ≤ 0.20% Carbon (C): ≤ 0.08% Nitrogen (N): ≤ 0.05% Hydrogen (H): ≤ 0.015% Applications of DIN 2567 Titanium Flanges: • Chemical Processing: Resists corrosion from strong acids, solvents, and chlorides • Marine and Offshore Engineering: Performs reliably in saltwater environments and subsea installations • Aerospace and Defense: Used in lightweight, high-strength fuel and hydraulic systems • Power Generation: Handles steam and chemical media in nuclear and thermal power plants • Water & Wastewater Treatment: Ideal for high-purity systems, brine lines, and filtration units • Medical and Pharmaceutical: Suitable for bio-compatible and sterile fluid transport systems Key Features: • Manufactured to DIN 2567 standard • Available in PN 25 and PN 40 pressure ratings • Superior resistance to corrosion, erosion, and chemical attack • Lightweight structure with high tensile strength • Easy installation with threaded connections—no welding required • Suitable for both cryogenic and elevated temperature conditions Conclusion: DIN 2567 titanium flanges PN 25 and PN 40 from Ladhani Metal Corporation are the ideal choice for demanding, corrosion-sensitive environments. Combining strength, lightweight construction, and superior corrosion resistance, these flanges deliver long-lasting performance in critical applications across various industries. For detailed specifications, custom designs, or bulk orders, contact Ladhani Metal Corporation today.

Ladhani Metal Corporation is a leading manufacturer and exporter of DIN 2565 titanium flanges, engineered to provide lightweight, high-strength, and corrosion-resistant connections in low-pressure piping systems. These flanges are designed according to DIN 2565 standards and are typically available in PN 6 pressure ratings, ideal for threaded connections where welding is not required. Titanium flanges are known for their exceptional performance in highly corrosive and extreme temperature environments, making them an ideal choice for industries such as chemical processing, marine, aerospace, power generation, and medical equipment. Flange Types: • Threaded (Screwed) Flanges: Enable easy installation without welding, suitable for maintenance-heavy applications. • Raised Face (RF) Flanges: Improve gasket compression to ensure leak-tight connections. • Flat Face (FF) Flanges: Commonly used with non-metallic gaskets in low-pressure systems. • Forged Threaded Flanges: Offer superior mechanical properties due to the forging process. • Custom-Machined Flanges: Designed to meet unique dimensional or pressure specifications. Available Titanium Grades and Chemical Composition: 1. Grade 2 (Commercially Pure Titanium) o Titanium (Ti): ≥ 98.9% o Iron (Fe): ≤ 0.30% o Oxygen (O): ≤ 0.25% o Carbon (C): ≤ 0.08% o Nitrogen (N): ≤ 0.03% o Hydrogen (H): ≤ 0.015% o Applications: Ideal for marine environments, desalination plants, chemical tanks, and general corrosion-resistant piping. 2. Grade 5 (Ti-6Al-4V) o Titanium (Ti): Balance o Aluminum (Al): 5.5 – 6.75% o Vanadium (V): 3.5 – 4.5% o Iron (Fe): ≤ 0.40% o Oxygen (O): ≤ 0.20% o Applications: Preferred in aerospace, high-performance automotive, and industrial applications requiring high strength-to-weight ratio and temperature resistance. Applications of DIN 2565 Titanium Flanges: • Chemical Processing: Highly resistant to corrosive acids and chlorides, making them suitable for aggressive chemical media. • Marine Industry: Excellent resistance to seawater corrosion, suitable for piping on ships and offshore structures. • Power Generation: Used in heat exchangers, condensers, and cooling systems exposed to brine or aggressive fluids. • Aerospace & Defense: Applied in lightweight, high-performance systems that demand structural reliability. • Medical Equipment: Biocompatible and corrosion-resistant, used in sterile piping and surgical systems. Key Features: • Compliant with DIN 2565 standard and available in PN 6 pressure rating. • Lightweight with excellent corrosion resistance and mechanical strength. • Non-magnetic, biocompatible, and suitable for extreme temperatures. • Available in Grade 2 and Grade 5 titanium for diverse industrial needs. • Supplied with full traceability, test certificates, and quality documentation. Conclusion: DIN 2565 titanium flanges from Ladhani Metal Corporation offer a superior solution for environments requiring strength, reliability, and outstanding corrosion resistance. Whether for chemical plants, marine systems, or aerospace applications, these flanges deliver long-term performance and operational efficiency. With precise machining and strict quality control, our titanium flanges meet global industry standards. For detailed technical data, pricing, or bulk order inquiries, contact Ladhani Metal Corporation today.

Ladhani Metal Corporation is a trusted supplier of high-quality DIN 2545 titanium flanges, designed for use in industries where strength, durability, and resistance to corrosion are essential. These titanium flanges are crafted to meet the highest standards of performance, offering reliability in a wide range of demanding applications such as chemical processing, marine environments, and aerospace industries. With a pressure rating of PN 40, these flanges are capable of withstanding pressures up to 40 bar, ensuring optimal performance even under high-pressure conditions. Types of DIN 2545 Titanium Flanges: Flat Face Flanges (FF) – These flanges have a flat surface that allows for even distribution of the sealing force, making them ideal for low-pressure applications where a tight seal is necessary. Raised Face Flanges (RF) – Featuring a raised area around the bolt holes, these flanges provide a higher sealing pressure, ensuring a more secure seal in higher-pressure environments. Ring-Type Joint (RTJ) Flanges – These flanges are equipped with a ring groove for use with a metal sealing ring, ideal for applications with high pressures or extreme temperatures. Grades of Titanium and Their Chemical Composition: Grade 2 (Commercially Pure Titanium) Chemical Composition: Ti: 99.2%, Fe: 0.3%, O: 0.18%, N: 0.03%, C: 0.08% Grade 2 titanium is the most commonly used form of titanium due to its excellent corrosion resistance, particularly in marine, chemical processing, and general industrial applications. It offers great strength-to-weight ratio and is known for its ability to withstand corrosive environments, including saltwater and various acidic conditions. Grade 5 (Titanium Alloy, Ti-6Al-4V) Chemical Composition: Ti: 90%, Al: 6%, V: 4%, Fe: 0.25%, O: 0.2%, C: 0.08% Grade 5 titanium, known as Ti-6Al-4V, is an alloy that combines high strength with excellent corrosion resistance. It is commonly used in aerospace, automotive, and high-performance engineering applications, offering a superior balance of strength, fatigue resistance, and durability. This grade is ideal for applications where structural integrity is critical. PN 40 Pressure Rating: The "PN" in DIN 2545 refers to the pressure rating, with PN 40 indicating that the flange is designed to withstand a maximum pressure of 40 bar. This pressure rating ensures that the flange is suitable for high-pressure systems, offering the necessary strength and reliability to maintain secure and leak-free connections. Applications: Chemical and petrochemical industries Marine and offshore platforms Aerospace and aviation systems Power generation and nuclear industries Food processing and pharmaceutical industries Ladhani Metal Corporation guarantees the production of these titanium flanges with precision and quality control, ensuring compliance with international standards. Each flange is manufactured to the exact specifications and undergoes rigorous testing to meet the required performance standards. Whether for a high-pressure industrial system or a specialized application, Ladhani Metal Corporation's DIN 2545 titanium flanges provide the performance and reliability needed for long-term operation.

DIN 2527 Titanium Grade 5 Blind Flanges are premium-quality sealing components designed to close off the open ends of pipes, vessels, or equipment in systems where no further connection is needed. Made from Titanium Grade 5 (Ti-6Al-4V), these flanges are known for their superior strength, excellent corrosion resistance, and lightweight properties. Titanium Grade 5 is an alloy composed of titanium, aluminum, and vanadium, making it stronger and more heat-resistant than commercially pure titanium (Grade 2). These flanges adhere to the DIN 2527 standard, ensuring that they meet the precise requirements for dimensional accuracy, pressure tolerance, and mechanical performance. Material Composition of Titanium Grade 5 (Ti-6Al-4V): Titanium Grade 5, also known as Ti-6Al-4V, is composed of the following elements: Titanium (Ti): 90.0% min Aluminum (Al): 6.0% - 7.0% Vanadium (V): 3.5% - 4.5% Iron (Fe): 0.25% max Oxygen (O): 0.20% max Carbon (C): 0.10% max Nitrogen (N): 0.05% max Hydrogen (H): 0.015% max Titanium Grade 5 is one of the most widely used titanium alloys due to its high strength, resistance to corrosion, and ability to withstand elevated temperatures, making it suitable for high-performance applications. Key Features of DIN 2527 Titanium Grade 5 Blind Flanges: Superior Strength: Titanium Grade 5 offers high strength (approximately 130 ksi tensile strength) while maintaining its light weight, making it suitable for demanding applications where both strength and low mass are important, such as in aerospace and military systems. Corrosion Resistance: Titanium Grade 5 exhibits exceptional corrosion resistance, particularly against chlorides, seawater, and acidic environments. It is highly resistant to pitting, crevice corrosion, and stress corrosion cracking. It performs well in the presence of strong acids like sulfuric and hydrochloric acids, making it suitable for chemical processing systems, offshore, and marine applications. Temperature Resistance: Titanium Grade 5 can withstand elevated temperatures, with a continuous operating temperature up to 400°C (752°F) and intermittent exposure to higher temperatures. This makes it suitable for high-temperature applications in aerospace, power generation, and chemical industries. Light Weight: Titanium alloys, including Grade 5, have a very low density, approximately 60% of that of steel, making them an excellent choice for applications where weight reduction is a priority, such as in the aerospace and automotive industries. Dimensional Accuracy & Pressure Ratings: DIN 2527 Titanium Grade 5 Blind Flanges are manufactured to exacting standards to ensure a tight, secure seal in piping systems. Available in various pressure classes such as PN6, PN10, and PN16, allowing compatibility with a range of piping systems depending on the pressure requirements. Design Options: Standard Blind Flange (Type A): A solid, circular flange used to seal the end of a pipe or vessel. Flat-Faced Blind Flange: Designed with a flat sealing surface for low-pressure systems. Raised Face Blind Flange: Features a raised area around the center for improved sealing in higher pressure applications. Ring-Type Joint (RTJ) Blind Flange: Designed for high-pressure applications with a groove for a ring-type joint gasket, commonly used in the oil and gas industries. Long Weld Neck Blind Flange: Includes an extended neck for welding, providing additional strength in high-pressure or stressed systems. Nominal Diameter: DIN 2527 Titanium Grade 5 Blind Flanges are available in a variety of nominal diameters (DN), ranging from DN10 (1/2 inch) up to DN600 (24 inches) or larger, depending on system requirements.

DIN 2527 Titanium Grade 2 Blind Flanges are specialized sealing components designed to close the open ends of pipes, vessels, or equipment in systems where no further connections are required. Made from Titanium Grade 2, these flanges are renowned for their excellent corrosion resistance, high strength, and light weight. Titanium Grade 2 is the most commonly used commercially pure titanium, offering a great combination of strength and durability for a wide range of industrial applications. The DIN 2527 standard ensures that these flanges meet precise dimensional, pressure, and mechanical requirements. Material Composition of Titanium Grade 2: Titanium Grade 2 (commercially pure titanium) is primarily composed of the following elements: Titanium (Ti): 99.2% min Iron (Fe): 0.30% max Oxygen (O): 0.25% max Carbon (C): 0.08% max Nitrogen (N): 0.03% max Hydrogen (H): 0.015% max Titanium Grade 2 is known for its outstanding combination of strength, ductility, and resistance to corrosion, making it suitable for a wide variety of industrial uses, especially in environments where high corrosion resistance is critical. Key Features of DIN 2527 Titanium Grade 2 Blind Flanges: Corrosion Resistance: Titanium Grade 2 is highly resistant to corrosion, particularly in environments that are exposed to chloride ions, seawater, and acidic conditions. It offers exceptional protection against pitting, crevice corrosion, and stress corrosion cracking. These flanges are ideal for use in applications involving harsh chemicals, acids, and marine environments, including seawater pipelines, desalination plants, and chemical processing systems. Strength and Durability: While Titanium Grade 2 is not as strong as titanium alloys with added elements like aluminum and vanadium (e.g., Grade 5), it still offers excellent strength-to-weight ratio, especially in terms of tensile strength and resistance to deformation under stress. It retains its strength even at elevated temperatures, making it reliable in systems exposed to thermal cycling and fluctuating temperatures. Temperature Resistance: Titanium Grade 2 maintains its performance at temperatures up to 400°C (752°F), providing stability and durability in environments with moderate to high temperatures. This makes it suitable for a wide range of industrial applications. Dimensional Accuracy and Pressure Ratings: DIN 2527 Titanium Grade 2 Blind Flanges are produced to precise specifications, ensuring accurate dimensions for a secure and reliable seal. These flanges are available in various pressure classes such as PN6, PN10, and PN16, depending on the requirements of the piping system. Design Variations: Standard Blind Flange (Type A): A solid, circular flange used to completely seal the end of a pipe or vessel. Flat-Faced Blind Flange: Designed with a flat sealing surface, ideal for low-pressure systems where a tight seal is required. Raised Face Blind Flange: Features a raised center portion to improve sealing capabilities in higher pressure systems. Ring-Type Joint (RTJ) Blind Flange: Incorporates a groove for a ring-type joint gasket, typically used in high-pressure and critical applications such as oil and gas pipelines. Long Weld Neck Blind Flange: Has an extended neck, offering additional strength, particularly useful in high-stress or high-pressure environments. Nominal Diameter: DIN 2527 Titanium Grade 2 Blind Flanges come in various nominal diameters (DN), ranging from DN10 (1/2 inch) up to DN600 (24 inches) or larger, depending on the system requirements.

Product Name: Titanium gr 2 pipe Standard: ASTM B861, ASTM B862, ASTM B338 Material: Gr2 Unit Price: $25usd/kg-$40usd/kg Type: Seamless/Welded Shape: Round

Product Name: titanium welding wire Standard: AWS A5.16 Material: Gr1, Gr2 ,Gr3, Gr4,Gr5, Gr7,Gr12 Unit Price: $21.5usd/kg-$60usd/kg Shape: Straight, Spool, Coil Diameter: 0.8mm/1mm/1.2mm/1.6mm/2mm/2.4mm/3mm/3.2mm etc. Surface: Pickling,polishing Titanium welding wire is usually used for Aerospace industry, shipbuilding industry, metallurgical industry, pharmaceutical industry, sports equipment, daily necessities and other fields. We have a plenty of titanium welding wire in stock, and can send goods in 5-7 days. Welcome to contact us in any time! Material grade: Gr1, Gr2 ,Gr3, Gr4,Gr5, Gr7,Gr12 (ERTi-1, ERTi-2, ERTi-3, ERTi-4, ERTi-5,ERTi-7,ERTi-12 Standard: AWS A5.16 Specification: Coil wire：Diameter 1.0, 1.2, 1.6mm Circle wire：Diameter 1.2, 1.6, 2.0, 2.4, 3.0, 4.0, 5.0mm Straight wire：Diameter 1.2, 1.6, 2.0, 2.4, 3.0, 4.0, 5.0, 6.0mm Length: 1000mm, or as customers' requets Surface treatment: pickling, polishing Surface quality: high precision, good finish, no oxidation color, no cracks, peeling, thorns, scars and inclusions. Slight local scratches, abrasions, spots and pits;do not exceed the allowable tolerance of the wire diameter are allowed. Physical Properties Tensile Strength(min) Yeild Strength(min) Elongation(%) ksi MPa ksi MPa Grade 1 35 240 20 138 24 Grade2 50 345 40 275 20 Grade 3 65 450 55 380 18 Grade 4 80 550 70 483 15 Grade 5 130 895 120 828 10 Grade 7 50 345 40 275 20 Grade 12 70 483 50 345 18