Want to know which tools are best for your metalworking solution? Here are 5 in-demand saw blades that smoothly cut through the metal, are durable and have long-lasting efficiency. Read further!
Kalikund Steel & Engg Co is a premier stocking service centre providing a wide range of industries with specialty stainless steel, carbon steel, alloy steel & nickel alloy bars in different shapes like round, hex, square, rectangle -specializing in exact shafting in those difficult to find grades, sizes and lengths.
Get more information related to stainless steel cold rolled sheet :- http://www.jiangsusteel.com/Stainless-Steel-Sheet/Wire-Pipe-Sheet-Bar/Stainless_Steel_Cold_Rolled_Coil-1241.html
Ply Gem Steel Siding is a rugged, durable steel siding product that is available in a variety of eye-popping colours. It is engineered to protect and beautify your home for decades to come.
Bri-Mac Bearing Housings - manufactured in Great Britain.
Plummer Blocks & Pillow Blocks made in Cast Iron, Cast Steel & Stainless Steel.
To suit any application - supplied worldwide.
www.bri-mac.com
Kalikund Steel & Engg Co is a premier stocking service centre providing a wide range of industries with specialty stainless steel, carbon steel, alloy steel & nickel alloy bars in different shapes like round, hex, square, rectangle -specializing in exact shafting in those difficult to find grades, sizes and lengths.
Get more information related to stainless steel cold rolled sheet :- http://www.jiangsusteel.com/Stainless-Steel-Sheet/Wire-Pipe-Sheet-Bar/Stainless_Steel_Cold_Rolled_Coil-1241.html
Ply Gem Steel Siding is a rugged, durable steel siding product that is available in a variety of eye-popping colours. It is engineered to protect and beautify your home for decades to come.
Bri-Mac Bearing Housings - manufactured in Great Britain.
Plummer Blocks & Pillow Blocks made in Cast Iron, Cast Steel & Stainless Steel.
To suit any application - supplied worldwide.
www.bri-mac.com
Researching and Collecting hunting knives has been my favorite hobby. There are many hunting knives in market. Here I make a complete list of top 10 knives. I find these knives the best. You can choose any of them :)
#huntingknife #top10huntingknife #besthuntingknife #huntingknifereviews
Different rolled steel bars and sectionsskytechmetals
Rolled steel sections are available in various forms for use in Steel Construction. Shapes, sizes, and properties of these rolled steel sections, Different steel members are manufactured in the factories based their usage
Marco Specialty Steel, Inc. is a steel service center and fabricator specializing in Wire Cloth, Perforated Metal, Expanded Metal, Bar Grating, Fiberglass Grating, Safety Grating and Hex Metal. Since 1992 our goal has been to provide the best, customer focused service in the metals industry to all customers, whether your requirement is large or small.Our knowledgeable, friendly sales personnel routinely work together with Engineers, Designers, Architects, Buyers, and Maintenance personnel to quickly and effectively find solutions to their needs.
Bastion Gear offers a wide range of premium Glock accessories including Glock slide back plates made of high-quality materials such as stainless steel, copper, and titanium. Get in touch with us through our website.
The screws, bolts and nuts all are type of fasteners characterized by their shapes and sizes. These are the basic hardware items used in almost every industry where the need of fasteners arises.
Svamitva steel Industrial Corporation is one of the specialized manufacturers & dealers of SS 304 Round Bars which is readily fabricated by standard commercial procedures. In comparison to carbon steel, Stainless steel 304 Bars are tougher and tend to work harden rapidly. Stainless steel 304 Bars are a heat resisting stainless steel with high resistance to oxidation scaling and have high strength at elevated temperatures.
Flexural behaviour of light gauge cold formed steel members comparison of i...eSAT Journals
Abstract Light – gauge steel evolved as a building material in the 1930’s and reached large scale usage only after the Second World War. In comparison with conventional steel construction, where standard hot rolled shapes are used, the cold formed light gauge steel structures are relatively new development. This paper presents a study on behaviour and economical of cold formed steel (CFS) built up channel section using different codes. This paper provides an experimental investigation for the bending strength of Cold – Formed light gauge steel plain (stiffened) rectangular sections. The test specimens were brake pressed from high strength structural steel sheets. In addition, the test strengths were compared with the design strengths calculated using the Indian Standard and Euro codes Specification for Cold –Formed steel structures. Flexural members are linear members in which axial forces act to cause elongation (stretch). The theoretical data are calculated using Indian Standard code IS 801-1975 and the section properties of the specimens are obtained using IS 811-1975. The specimens are designed under uniformly distributed loading with simply supported condition. The research project aims to provide which code of practice given more economical, high bending strength, more load carrying capacity and high flexural strength. The studies reveal that the theoretical investigations limit state methods (SI method) have high bending strength, high load caring capacity, maximum deflection and minimum local buckling& distortional buckling compare to the other codes. Keywords: Cold formed steel, built up channel section, limit state method, working stress method, bending strength, deflection
Check out what’s new this time! Explore the latest additions of unique knives, historically accurate replicas, military surplus, costumes and rare to find canes, sabers, and swords in this Atlanta Cutlery Catalog. Download now!
Shop online- https://www.atlantacutlery.com/
Researching and Collecting hunting knives has been my favorite hobby. There are many hunting knives in market. Here I make a complete list of top 10 knives. I find these knives the best. You can choose any of them :)
#huntingknife #top10huntingknife #besthuntingknife #huntingknifereviews
Different rolled steel bars and sectionsskytechmetals
Rolled steel sections are available in various forms for use in Steel Construction. Shapes, sizes, and properties of these rolled steel sections, Different steel members are manufactured in the factories based their usage
Marco Specialty Steel, Inc. is a steel service center and fabricator specializing in Wire Cloth, Perforated Metal, Expanded Metal, Bar Grating, Fiberglass Grating, Safety Grating and Hex Metal. Since 1992 our goal has been to provide the best, customer focused service in the metals industry to all customers, whether your requirement is large or small.Our knowledgeable, friendly sales personnel routinely work together with Engineers, Designers, Architects, Buyers, and Maintenance personnel to quickly and effectively find solutions to their needs.
Bastion Gear offers a wide range of premium Glock accessories including Glock slide back plates made of high-quality materials such as stainless steel, copper, and titanium. Get in touch with us through our website.
The screws, bolts and nuts all are type of fasteners characterized by their shapes and sizes. These are the basic hardware items used in almost every industry where the need of fasteners arises.
Svamitva steel Industrial Corporation is one of the specialized manufacturers & dealers of SS 304 Round Bars which is readily fabricated by standard commercial procedures. In comparison to carbon steel, Stainless steel 304 Bars are tougher and tend to work harden rapidly. Stainless steel 304 Bars are a heat resisting stainless steel with high resistance to oxidation scaling and have high strength at elevated temperatures.
Flexural behaviour of light gauge cold formed steel members comparison of i...eSAT Journals
Abstract Light – gauge steel evolved as a building material in the 1930’s and reached large scale usage only after the Second World War. In comparison with conventional steel construction, where standard hot rolled shapes are used, the cold formed light gauge steel structures are relatively new development. This paper presents a study on behaviour and economical of cold formed steel (CFS) built up channel section using different codes. This paper provides an experimental investigation for the bending strength of Cold – Formed light gauge steel plain (stiffened) rectangular sections. The test specimens were brake pressed from high strength structural steel sheets. In addition, the test strengths were compared with the design strengths calculated using the Indian Standard and Euro codes Specification for Cold –Formed steel structures. Flexural members are linear members in which axial forces act to cause elongation (stretch). The theoretical data are calculated using Indian Standard code IS 801-1975 and the section properties of the specimens are obtained using IS 811-1975. The specimens are designed under uniformly distributed loading with simply supported condition. The research project aims to provide which code of practice given more economical, high bending strength, more load carrying capacity and high flexural strength. The studies reveal that the theoretical investigations limit state methods (SI method) have high bending strength, high load caring capacity, maximum deflection and minimum local buckling& distortional buckling compare to the other codes. Keywords: Cold formed steel, built up channel section, limit state method, working stress method, bending strength, deflection
Check out what’s new this time! Explore the latest additions of unique knives, historically accurate replicas, military surplus, costumes and rare to find canes, sabers, and swords in this Atlanta Cutlery Catalog. Download now!
Shop online- https://www.atlantacutlery.com/
INTRODUCTION
Built-up columns are used when
the heiĀht oÿ the column is such
that a rolled section cannot
provide a sufficiently larĀe radius
oÿ Āyration. Built-up columns
consist Āenerally oÿ two or ÿour
shapes connected toĀether by
cover plates perÿorated at intervals
with access holes.
PROPERTIES
● PHYSICAL PROPERTIES:
1. r = 7850 kg/m3 = 78.5 kN/ m3
2. E= 2x 105 N/ mm2
3. Poison ratio = 0.3
● MECHANICAL PROPERTIES:
PROPERTIES
1. DUCTILITY:
● Ability of material to change its shape without fracture
Mild steel - high ductility
High carbon steel - low ductility
2. TOUGHNESS & BRITTLE FRACTURE:
● Ability of material to resist (absorb) impact load like earthquake load, machine load etc…,
● Requires both strength and ductility
3. TEMPERATURE:
At high temp. Strength reduces
4. CORROSION:
Steel corrodes in moist air, sea water and acid. Adopted painting, metallic coating.plastic coating, using corrosion
resistant steel to resist corrosion
5. HARDNESS:
● Resistance of the material to intentions and scratching
● Brinell hardness, rockwell hardness number are used to measure hardness
6. FATIGUE:
● Damage of material to cyclic loading
● Occurs due to moving loads, vibration in bridge
ADVANTAGES
Advantages of steel beam constructions
● Recyclable
Structural steel is recyclable, unlike many other construction materials. This plays a biĀ part in
reducinĀ construction waste.
● Durable
Structural steel structures such as steel beams have a hiĀh strenĀth to weiĀht ratio, makinĀ it quite
durable. It can withstand hiĀher stress, as compared to an equivalent mass oÿ wood or stone,
without ÿracture. The durability oÿ structural steel structures is one oÿ the advantaĀes that makes it
desirable ÿor the construction oÿ tall skyscrapers and bridĀes.
● Corrosion and rust resistant
Construction material such as wood has a low liÿe expectancy as they are likely to Āet rotten ÿaster.
The chemical composition oÿ steel beams makes them resistant to corrosion and rust that may
otherwise affect the durability oÿ the structure. Due to this advantaĀe, the liÿe expectancy oÿ
structures made usinĀ steel beams is hiĀher as compared to other construction materials.
DISADVANTAGES
Disadvantages of steel beam constructions
● High maintenance cost
The cost oÿ maintenance oÿ steel beams is hiĀh. Coats oÿ expensive paints have to be applied reĀularly on
the surÿace oÿ the beams to prevent corrosion. This action to increase the resistance oÿ the steel beam
aĀainst corrosion adds to the cost oÿ maintenance oÿ the structure.
● Less resistant to fire
Steel beams have little resistance to fire as compared to concrete beams. In case oÿ fire, the strenĀth oÿ
steel beams Āets reduced, puttinĀ the structure at risk.
● Difficult to manoeuvre
Steel beams are heavier than wooden beams, makinĀ it difficult ÿor workers to work with them. It is also
difficult to manoeuvre steel beam structures. Thereÿore, saÿety becomes a biĀĀer concern at a construction
site when workinĀ with ste
Drilling Bit Introduction and bit Selection (Part 1)Amir Rafati
(PART 1,2 & 3)
1. Drilling mechanisms
2. Bit classifications (fixed cutter and roller cone bits)
3. IADC code descriptions
4. Tri-cone bits life time
5. Geometrical analysis of roller cone bits
• Fundamentals of bit design
• Basics of cone geometry design
• Oversize angle
• Offset
• Teeth and inserts
• Additional design criteria: tooth to tooth and groove clearances and etc.
• Cone-shell thickness
• Bearings factors
• Rock bit metallurgy
• Heat treatment
• Legs and cones material
• Tungsten carbide materials
• Legs and cones hard facing
• Tungsten carbide grade selection for inserts
• Bearings, seals and lubrication
• Bearing shape
• Bearing precisions and geometry
• Seal systems and seal details
• Dull grading system
6. Geometrical analysis of PDC bits
• PDC materials and constructions
• Matrix materials testing
• Differs between matrix & steel body
• Matrix body bits manufacturing
• Steel body bits manufacturing
• PDC bit design parameters: mechanical, hydraulic, rock properties
• Weld strength of PDC bits and cutters
• PDC cutter manufacturing process
• Tsp cutter properties vs PDC
• The influences of bit profile and profile elements
• PDC forces
• PDC bit stability
• PDC bit steer-ability
• Back rake
• Side rake
• Depth of cut
• Cutter exposure
• Cutter density
• Thermal damage and degradation of cutters
• Cutting mechanics
• PDC cutter substrate and its thickness
• Cutting structure elements
• Single set bladed cutting structures
• Plural set bladed cutting structures
• Dull grading system
7. ROP management based on drilling parameters
• WOB
• Rpm
• Sold content of mud
• Mud weight
• Cutter shape
• Cutters geometry
• Depth
• Abnormal pressure
• Drilling formation properties
The 3rd presentation of a series of presentations on Operations Geology. Very basic, just to introduce beginners to operations geology. I hope the end users will find this and the following presentations very helpful.
Steel slabs make flat steel products such as plates, strips, hollow sections, large-diameter welded pipes, and structural beams. The increase in Flat Steel pricing is mostly due to rising production costs. Making this the first rise offered by the steelmaker since March 2022.
Drilling Bit Introduction and bit Selection (Part 3)Amir Rafati
(PART 1,2 & 3)
1. Drilling mechanisms
2. Bit classifications (fixed cutter and roller cone bits)
3. IADC code descriptions
4. Tri-cone bits life time
5. Geometrical analysis of roller cone bits
• Fundamentals of bit design
• Basics of cone geometry design
• Oversize angle
• Offset
• Teeth and inserts
• Additional design criteria: tooth to tooth and groove clearances and etc.
• Cone-shell thickness
• Bearings factors
• Rock bit metallurgy
• Heat treatment
• Legs and cones material
• Tungsten carbide materials
• Legs and cones hard facing
• Tungsten carbide grade selection for inserts
• Bearings, seals and lubrication
• Bearing shape
• Bearing precisions and geometry
• Seal systems and seal details
• Dull grading system
6. Geometrical analysis of PDC bits
• PDC materials and constructions
• Matrix materials testing
• Differs between matrix & steel body
• Matrix body bits manufacturing
• Steel body bits manufacturing
• PDC bit design parameters: mechanical, hydraulic, rock properties
• Weld strength of PDC bits and cutters
• PDC cutter manufacturing process
• Tsp cutter properties vs PDC
• The influences of bit profile and profile elements
• PDC forces
• PDC bit stability
• PDC bit steer-ability
• Back rake
• Side rake
• Depth of cut
• Cutter exposure
• Cutter density
• Thermal damage and degradation of cutters
• Cutting mechanics
• PDC cutter substrate and its thickness
• Cutting structure elements
• Single set bladed cutting structures
• Plural set bladed cutting structures
• Dull grading system
7. ROP management based on drilling parameters
• WOB
• Rpm
• Sold content of mud
• Mud weight
• Cutter shape
• Cutters geometry
• Depth
• Abnormal pressure
• Drilling formation properties
Power saws provide high efficiency and good results when cutting metals. Power saws use electricity to achieve excellent cutting results. Read the PPT to learn more about the various types of power saws and their applications.
Picking the appropriate hole saw improves the quality of the final product by giving better work productivity. Explore the infographic, where you will find more details about the hole saw.
How laser cutting can improve your fabrication projectBipico Industries
Laser cutting has become notable as one of the most precise, efficient, and adaptable techniques for metal fabrication. Read this PPT & understand how it can improve your fabrication project.
Do you work in the metal cutting industry or machine tool industry? If yes, then you need to know about different cutting tools that are commonly used in the machine industry. For that, keep reading our presentation to know more about it.
TCT saw blades are specifically designed for cutting metal tubing, pipes, rails, nickel, zirconium, etc. It is the coating of tungsten carbide that gives the saw blades the ability to easily cut through metals. This Infographic illustrates the TCT saw blade in brief.
List Various Safety Steps To Follow While Using Industrial Tools.Bipico Industries
Tools are made to make our lives and work easy and task less time-consuming. tools are such a common part of our daily work. Occupational risks and accidents occur when employees perform production activities that most times are done with different types of industrial tools in various sizes and shapes. Read this PPT to Understand "Six Safety measures to follow while using Industrial Tools!”
Follow these Tips Increase the Life of Metal Cutting Power ToolsBipico Industries
Cutting tool life is one of the most important economic considerations in metalcutting. In roughing operations, the tool material, the various tool angles, cutting speeds, and feed rates are usually chosen to give an economical tool life. Here Bipico gives you some tips to increase the life of metal cutting power tools.
Metal cutting tools are widely used in different industries like agriculture, automotive, aerospace, and oil & gas industries. The metal cutting manufacturers are constantly strive to create top-notch quality products. Their approach is more customer-centric and keep their demands in mind while shaping new strategies. This piece by Bipico, a leading metal cutting tools manufacturer, has shared its insights on the outlook for metal tools industry in 2017.
A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance; this means if it is cut poorly, it will be less luminous. All the modern & effective tools for cutting diamonds & other metals are available at Bipico. Diamond saw blade is the trending cutting tool used for diamonds cutting.
Importance of cutting tools in machining industriesBipico Industries
A machine tool or metal cutting tool is used to manufacture metal components of machines through machining, a process whereby metal is selectively removed to create a desired shape. Ranging from simple to complex pieces, metal cutting tools can produce parts of different shapes and sizes. Metal Cutting Tools have gradually evolved over the past years. Today, machine tools are used on computerized numerical control (CNC) machines, which can repeat sequences with high levels of precision and produce complex pieces of various sizes and shapes. Various techniques can be used to remove unwanted metal during the process of fabricating or shaping parts, namely single edge cutting tools; multiple edge cutting tools, electrical discharge machining and grinding (abrasive cutting).
Metal Cutting Tools : Factors affecting Tool's lifeBipico Industries
Metal cutting tools are an indispensable part of manufacturing and industrial production. Right metal cutting tool can enhance the manufacturing process with its efficiency and effectiveness. Cutting tool life is an important consideration in metal cutting processes. The life of metal cutting tool is influenced by many factors which should be duly considered at the time of buying and using the tools. Here are some of the major factors that decide the life of your metal cutting tool.
Searching for metal cutting blades, Bipico is one of the leading metal cutting tools supplier & manufacturer. We provide various metal cutting tools like hacksaw, bimetal bandsaw blades, reciprocating saw blades, abrasive cutting & grinding discs and other metal cutting saw across the globe. Visit our site www.bipico.com now for more details.
We proud to be one of the leading metal cutting tools supplier & manufacturer with more than 3 decades of experience. We provide various metal cutting tools like hacksaw, bimetal bandsaw blades and other metal cutting saw across the globe. Visit our site www.bipico.com now for more details.
Bipico, India is a reputed metal cutting tools supplier offering best quality Hacksaw Frames,Jigsaw Blades, Band Saw Blades, Tool Bits, Carbide Tipped Band Saw Blades and various Abrasive Cutting and Grinding Discs in Gujarat & India for more than a decade.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...
5 In-demand Saw Blades For Metal Cutting Industry
1. FOR METAL CUTTING INDUTRY
5 In-demand Saw Blades
CARBON FLEX BACK
Saw
Blade
2
CARBON HARD BACK
BI-METAL (MATRIX)
CARBIDE TIPPED
GRIT EDGE
www.bipico.com
1
Saw
Blade
Saw
Blade
Saw
Blade
Saw
Blade
3
4
5
Carbon Hard Back is a one-piece
carbon steel construction with
spring tempered backing with an
RC of 43–47 (for rigidity) and a
tooth RC of 64–6.
Carbon Flex-Back is also one-piece carbon
steel construction. The spring of the saw
blade has got tempered backing with an
RC of 31–37 to allow flexing and a tooth
RC of 64–66.
The Carbide tipped saw blade has welded
carbide to the tips of each tooth and
welded to a high strength alloy backing.
The tooth of the saw blade has a double
bevel rather than a straight tooth.
This saw blade is called “Bi-Metal” as
the blade is made from two dissimilar
metals. In this, the steel spring is
backed with high-speed steel edge
material welded to tips of the teeth.
The Grit Edge saw blade has got
tough alloy backing material with
tungsten carbide or diamond
grit fused to the edge of the
blade.