Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel System 1

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel System 2

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel System 3

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel System 4

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 3 m.t.

Supply Capability:: 100000 m.t./month

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Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Details Information of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Name	Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel
Shape	Round Bar/Square Bar/Flat Bar/Plate/Wire
Standard	GB/ASTM/SAE/AISI/DIN/JIS/EN/BS
Surface Treatment:	Black/Peeling/Polished/Machined
Delivery Condition:	Hot Rolled or Forged/Peeled or Black Surface
Test	SGS/UT 100% Elements Testing
Certificate:	ISO/Mill Certificate
Service:	24 hours online service /
Service:	more than 20 years trading and manufacture
Quality Assurance:	the third party inspection, such as SGS, BV, TUV…etc. is acceptable
Packaging Details:	Seaworthy Packaging or as per customer's packing instruction

Carbon structure round bar	Q195 Q235A Q235B 10# 20#-55# S45CB
Low alloy high strength round bar	Q345A/Q345C/Q345D Q345B Q345E
Alloy structure round bar	SAE51B20 20Cr 40Cr 40CrV 20CrMo/30CrMo/35CrMo/42CrMo 20CrMoA/30CrMoA/35CrMoA/42CrMoA/42Cr ML20CrMo/ML30CrMo/ML35CrMo/ML42CrMo B7/SCM435-440 20MnTiB 20CrMnMo 20CrMoH 42CrMoH 40MnB/40MnBH 30Mn2-40Mn2 27SiMn 50CrVA 30CrMnTi
Pinion steel	20CrMnTi 20CrMnTiH 20CrMnTiHCS/20CrMnTiHLD Q20CrMnTi-1/Q20CrMnTi-2
Sucker rod	20-35CrMoA
Free-cutting steel	GT1215S
Spring steel	60Si2MnA 65Mn
Ball bearing steel	GCr15

Chemical Composition of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

C	Si	Mn	P	S	Cr	Ni	Cu

0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.25	≤0.25

Tensile strength (σb/MPa)	Yield strength (σb/MPa)	Elongation (δ5/%)
≥410(42)	≥245(25)	≥25

Company Introduction of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Certificates of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Packaging & Delivery of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

Products show of Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

Hot Dip Galvanized Steel Round Bar/Hot Dip Galvanized Bar Steel

FAQ

Are you a trading company or manufacturer?	Manufacturer
What’s the MOQ?	3 metric ton
What’s your delivery time?	15-35 days after downpayment received
Do you Accept OEM service?	Yes
what’s your delivery terms?	FOB/CFR/CIF
What's the Payment Terms?	30% as deposit,70% before shipment by T/T
	Western Union acceptable for small amount.
	L/C acceptable for large amount.
	Scrow ,Paybal,Alipay are also ok
Why choose us?	Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.
What's your available port of Shipment?	Main Port, China
What’s your featured services?	Our service formula: good quality+ good price+ good service=customer's trust
Where are your Market?	Covering more than 160 countries in the world

Q:Can special steel be used in high-speed applications?: Yes, special steel can be used in high-speed applications. Special steels such as tool steels or high-speed steels are specifically designed to withstand high temperatures, resist wear, and maintain their mechanical properties at high speeds. These steels are widely used in industries like aerospace, automotive, and manufacturing for applications like cutting tools, bearings, and gears, where high-speed performance is crucial.

Q:What are the different high-temperature grades of special steel?: There exists a variety of special steel grades that can withstand extreme heat and provide enhanced mechanical properties. Some of the frequently utilized high-temperature grades are as follows: 1. Stainless steel 310: Renowned for its exceptional resistance to oxidation at high temperatures, this grade boasts a high chromium and nickel content, resulting in excellent corrosion resistance and elevated temperature strength. 2. Inconel 625: Inconel alloys, which are nickel-based superalloys, exhibit remarkable resistance to oxidation and corrosion. In particular, Inconel 625 offers outstanding strength and toughness at high temperatures, rendering it suitable for applications in aerospace and chemical processing industries. 3. Hastelloy X: A notable example is Hastelloy X, a nickel-chromium-iron-molybdenum alloy that showcases extraordinary strength and oxidation resistance at elevated temperatures. It finds widespread use in gas turbine engines, industrial furnace components, and other high-temperature applications. 4. Alloy 800H: This specific grade of special steel is an austenitic alloy that possesses high resistance to oxidation, carburization, and nitridation. It frequently finds application in heat exchangers, furnace components, and petrochemical industries. 5. Titanium Grade 5: While technically not steel, titanium grade 5 is a high-temperature alloy that delivers exceptional strength and corrosion resistance at elevated temperatures. It is commonly employed in aircraft engine components, chemical processing equipment, and marine applications. These examples merely represent a fraction of the high-temperature grades of special steel available in the market. Each grade serves a specific purpose, excelling in various applications that demand extreme heat resistance and specific mechanical properties.

Q:What are the challenges in heat treating special steel?: One of the challenges in heat treating special steel is achieving the desired hardness and strength while maintaining dimensional stability. Special steels often have complex alloy compositions that require precise heat treatment processes to achieve the desired properties. Another challenge is controlling the transformation temperatures and rates, as special steels may have multiple phase transformations that need to be precisely controlled to avoid distortion or cracking. Additionally, special steels may have high hardenability, making it difficult to achieve uniform hardness throughout the part. Overall, heat treating special steel requires a deep understanding of its composition and careful control of the heat treatment parameters to overcome these challenges and achieve the desired properties.

Q:What are the different methods of improving the corrosion resistance of special steel?: There are several methods for improving the corrosion resistance of special steel. One common approach is the addition of alloying elements such as chromium, nickel, or molybdenum, which form a protective oxide layer on the steel surface. Another method involves surface treatments like passivation or electroplating, which create a barrier against corrosion. Additionally, applying protective coatings such as paints or powder coatings can also enhance the steel's resistance to corrosion. Finally, proper maintenance practices like regular cleaning, drying, and oiling can help prevent corrosion and ensure the longevity of special steel.

Q:What are the different methods of testing special steel for quality assurance?: To ensure quality assurance, special steel undergoes testing using various methods. These methods are as follows: 1. Chemical Analysis: The composition of the steel is determined by analyzing its chemical elements and their respective quantities. This analysis ensures that the steel meets the specified requirements and is free from impurities. 2. Mechanical Testing: The strength, hardness, and other mechanical properties of the steel are assessed through mechanical testing. Tensile tests, hardness tests, impact tests, and fatigue tests are commonly performed to evaluate the steel's performance under different conditions and ensure it meets the required standards. 3. Non-Destructive Testing (NDT): NDT techniques are utilized to detect any surface or internal defects in the steel without causing damage. Magnetic particle testing, ultrasonic testing, radiographic testing, and dye penetrant testing are commonly employed methods for NDT. These tests are crucial in identifying flaws that may compromise the steel's structural integrity. 4. Metallurgical Analysis: The quality of the steel is assessed through microscopic examination of its microstructure. This analysis helps identify grain size variations, inclusions, or phase transformations that might affect the steel's performance. Metallography, optical microscopy, and electron microscopy are commonly used techniques for metallurgical analysis. 5. Corrosion Testing: Considering that special steel is often exposed to harsh environments, corrosion resistance is a critical quality parameter. Corrosion testing evaluates the steel's resistance to corrosion in various conditions. Salt spray testing, electrochemical testing, and exposure to corrosive environments are some methods used for corrosion testing. 6. Dimensional Inspection: Dimensional inspection ensures that the special steel meets the specified dimensional requirements. This involves measuring the steel's dimensions, including length, width, thickness, and other critical dimensions, using calibrated instruments. By employing these diverse methods, manufacturers can conduct thorough testing of special steel to ensure it meets the required quality standards. This comprehensive testing guarantees the steel's performance, durability, and reliability in various applications.

Q:How does the heat treatment process affect special steel?: The heat treatment process can significantly impact the properties of special steel. It involves heating the steel to a specific temperature and then cooling it in different ways to achieve desired hardness, strength, and other mechanical properties. By carefully controlling the heating and cooling rates, the heat treatment process can alter the microstructure of the steel, allowing for the formation of various phases and structures. This can result in improved hardness, toughness, and wear resistance, making the special steel more suitable for specific applications. Additionally, heat treatment can also relieve internal stresses and improve dimensional stability, enhancing the overall performance and durability of the special steel.

Q:What are the requirements for special steel used in railway applications?: Due to the demanding nature of the industry, the railway sector has stringent requirements for the special steel it uses. Here are a few key considerations: 1. Strength and durability are of utmost importance. The steel must possess exceptional strength and durability to withstand the heavy loads and constant vibrations experienced by trains. This is crucial in preventing deformation, fatigue, and failure of steel components. 2. Wear resistance is another vital requirement. The constant movement of trains subjects railway tracks and other components to significant wear and tear. Therefore, the special steel used in railway applications should have good wear resistance. This ensures a longer service life and reduces maintenance costs. 3. Corrosion resistance is imperative due to exposure to various environmental conditions, such as rain, snow, and chemicals. The special steel must possess high corrosion resistance to prevent rusting and degradation. This ensures the longevity of the components. 4. Fatigue resistance is crucial since trains undergo repetitive loading cycles that can lead to fatigue in steel components. Special steel with excellent fatigue resistance is necessary to prevent cracking and failure. This ensures the safety and reliability of railway systems. 5. High impact toughness is essential. Special steel used in railway applications must absorb energy during sudden shocks or accidents. This prevents catastrophic failures and ensures the safety of passengers and railway personnel. 6. Heat resistance is a requirement for certain railway applications, especially high-speed trains. The steel components are exposed to high temperatures due to friction or other sources. Special steel should possess good heat resistance to maintain its mechanical properties and structural integrity even under elevated temperatures. 7. Dimensional stability is crucial to maintain the required tolerances and alignment of various components in railway applications. Special steel should exhibit excellent dimensional stability. This ensures smooth operation, reduces noise, and prevents excessive wear. These are the primary requirements for special steel used in railway applications. Meeting these requirements is crucial for the safe, reliable, and efficient operation of railway systems.

Q:What are the different types of coatings for special steel?: To enhance the performance and safeguard special steel against various environmental factors, a range of coatings can be applied. The following are some commonly used coatings for special steel: 1. Zinc-based coatings: These coatings, like galvanized steel, offer exceptional corrosion resistance. By acting as sacrificial barriers, the zinc layers protect the underlying steel from rusting. 2. Epoxy coatings: Renowned for their resistance to chemicals, moisture, and abrasion, epoxy coatings find extensive use in industries where steel is exposed to harsh conditions or corrosive substances. 3. Powder coatings: Providing a durable and visually appealing finish to special steel, powder coatings are applied as dry powder and cured under heat. This process forms a tough, protective layer that resists chipping, fading, and corrosion. 4. Ceramic coatings: Ceramic coatings are celebrated for their ability to withstand high temperatures and excellent thermal insulation properties. They are commonly utilized in applications involving extreme heat or rapid temperature changes. 5. Organic coatings: Acrylics and polyurethanes are examples of organic coatings that create a protective barrier against moisture, UV radiation, and chemicals. They are frequently employed in outdoor applications, such as architectural structures or automotive parts. 6. Phosphate coatings: Primarily used as pre-treatment before applying other coatings or paints, phosphate coatings enhance adhesion and corrosion resistance in subsequent layers, resulting in a more durable finish. 7. Polymer coatings: Polymer coatings exhibit exceptional resistance to abrasion, impact, and chemicals. They are often utilized in industrial settings where steel experiences heavy wear and tear. Selecting the appropriate coating for special steel is crucial, considering the specific requirements and environmental conditions it will encounter. Each type of coating possesses its own advantages and limitations, necessitating a comprehensive analysis to determine the most suitable option.

Q:What are the different methods of strengthening special steel?: There are several methods to strengthen special steel, including heat treatment, cold working, alloying, and precipitation hardening. Heat treatment involves heating the steel to a specific temperature and then cooling it rapidly or slowly to alter its microstructure and improve its strength. Cold working involves subjecting the steel to mechanical stress, such as rolling or bending, to increase its strength. Alloying involves adding other elements to the steel to enhance its properties, such as manganese, chromium, or nickel. Precipitation hardening involves a two-step process of solution treatment and aging, where the steel is heated and then cooled to form precipitates that strengthen the material.

Q:How does special steel perform in cryogenic gas environments?: Special steel performs well in cryogenic gas environments due to its high ductility and toughness at low temperatures. It is able to maintain its mechanical properties and resist embrittlement, making it suitable for applications such as LNG storage tanks, aerospace components, and cryogenic pipelines. Additionally, special steel exhibits excellent resistance to corrosion and oxidation, further enhancing its performance in cryogenic gas environments.

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